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Species Action Plans

SPECIES ACTION PLANS

Focused ecological strategies that align your development with biodiversity policy, protect key habitats and keep projects compliant across the UK. 

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Do you need a Species Action Plan?

If your site supports protected or priority species, your planning authority may require a Species Action Plan (SAP). 
These plans set out targeted actions that protect species, demonstrate legal compliance and show measurable biodiversity improvements within your scheme. 

Handled early, a SAP helps you satisfy planning conditions, avoid reactive mitigation, and build biodiversity gain into design rather than retrofit it later. 

What is a Species Action Plan?

A SAP is a structured plan describing how development activity will protect, manage and enhance populations of specific species on-site or nearby. 
It combines ecological evidence, proportionate measures and monitoring proposals to satisfy both Environment Act 2021 and NPPF Section 15 expectations. Our ecologists follow CIEEM standards, using actions mapped directly to your programme milestones.

Aerial view of boundary lines which could trigger a PEA
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Land with a range a habitat features, may indicate a PEA is needed

Trigger points — signs your site needs a PEA

These indicators suggest your site might require more than a basic walkover and may attract LPA scrutiny:

  • your PEA or protected-species survey identifies notable populations 
  • habitats host Section 41 or Annex II/IV species 
  • mitigation measures extend beyond a single construction phase 
  • biodiversity enhancements are condition-linked to specific species 
  • the site contributes to a local Nature Recovery Network 

When these triggers appear, preparing a SAP before submission keeps ecological obligations manageable and proportional. 

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What We Deliver

We keep guidance clear and planning-ready — supporting predictable project delivery. 

Service Component Purpose Outcome
Species Review Identify target species and ecological context Defined scope for actions
Impact Assessment Evaluate risks to populations Evidence for proportionate response
Mitigation Design Develop avoidance and reduction measures Legal and planning compliance
Enhancement Strategy Add long-term biodiversity value Quantifiable uplift for BNG
Implementation Plan Set methods, timing and responsibility Predictable delivery sequence
Monitoring Framework Track effectiveness over time Transparent reporting for LPAs
Reporting & Sign-off Produce planning-ready documentation Defensible submission evidence
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How it Works

Our process is designed to remove friction and keep decisions moving. 

Scope & Review

We assess survey findings and planning context to confirm target species and required outcomes.

Action Planning

Mitigation and enhancement measures are developed alongside your design and construction phases.

Implementation & Monitoring

Actions are integrated with site works and tracked against planning conditions.

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Timing & Survey Windows

Species Action Plans can be produced year-round once baseline data is available. 
However, the surveys that inform them such as bat activity, great crested newt, reptile, or bird surveys are strictly seasonal

Bat Surveys

May – August

GCN Surveys

activity mid-March – June (eDNA April – June)

Reptile Surveys

Only April, May and September

Bird Surveys

Year-round for scoping; nesting activity March–August.

Badgers and habitat checks:

Year-round

Securing your SAP early allows results from these seasonal surveys to flow straight into planning documentation and keep your schedule predictable.

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Why planning officers request PEAs 

Under the NERC Act 2006 (S41) and local biodiversity policies, LPAs must ensure that developments deliver tangible benefits for priority species. 
A clear SAP demonstrates that responsibility has been met in a measurable, transparent way. Satisfying planning conditions and policy duties under NPPF and Environment Act 2021.

Without one, projects often face: 

  • delayed discharges of ecological conditions 
  • re-consultation with statutory bodies 
  • stop-work clauses during construction 
  • increased scrutiny at validation or appeal 

A well-built SAP prevents that cycle by giving planning officers certainty upfront. 
Act early and your evidence works for you, not against you. 

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Our Approach

Each ProHort appraisal follows CIEEM guidance, Natural England standards and UKHab classification, producing reports LPAs recognise immediately. 

Our planning-ready SAP includes: 

  • baseline species data and risk evaluation 
  • practical mitigation and enhancement actions 
  • delivery methods and responsible parties 
  • measurable outcomes for planning and BNG tracking 
  • monitoring and reporting framework 

You’ll know exactly what each measure achieves, how it will be delivered and how to evidence success at sign-off.  

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How this supports your project

A well-timed SAP: 

  • translates ecological findings into practical, buildable measures 
  • satisfies planning conditions and policy duties under NPPF and Environment Act 2021 
  • integrates with BNG strategy and contractor method statements 
  • provides traceable ecological evidence for audits and monitoring 
  • keeps environmental risk low and programme certainty high 

Clear actions. Predictable delivery. Verified outcomes. 

Its purpose is simple: provide clarity for planners, confidence for contractors and predictability for your programme.

Case Insight

A housing scheme in the Midlands required species-specific measures for bats and great crested newts. The SAP established phased lighting control, habitat creation and post-construction monitoring. Planners approved the discharge of conditions in one round, saving months on programme. That’s the impact of clarity backed by data.
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Your Next Step

Get the ecological clarity that keeps your design on track. 

Phone: 0800 494 7479

Email: [email protected]

Request Survey Quote

SAP FAQ - Planning and Programme Clarity

Do all sites need a Species Action Plan?

No. Only where notable or protected species are recorded or predicted. We confirm quickly from survey data.

Yes, but it’s cleaner and faster to prepare it before condition discharge requests. 

No. It complements licensing by setting wider habitat or population actions.

Bats, birds, reptiles, amphibians, badgers, invertebrates and other priority taxa listed under Section 41.

Yes. SAP actions often count toward measurable biodiversity gains.

Will this delay planning?

Not if scoped early. We prepare SAPs in parallel with design so they slot straight into submissions.

LPAs, ecologists and occasionally Natural England. We align evidence to their expectations.

Typically within 10 working days of fieldwork, faster where programmes demand it. 

Enough to demonstrate success over the agreed period—typically one to five years.

Survey reports, site boundary, planning stage and intended timescales.

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Biodiversity Checklist for Planning Applications

Biodiversity Screening Assessment for Planning Applications

Early ecological due diligence that verifies biodiversity risk, defines what evidence your application requires, and keeps your planning submission moving — delivered nationwide by qualified ProHort ecologists. 

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Do you need a Biodiversity Screening Assessment?

If your site includes vegetation, open ground, trees or water features, your planning authority will likely request biodiversity screening before validation. 

This short, structured assessment confirms whether your proposal could affect habitats or species and what supporting ecology evidence is needed.  

What is a Biodiversity Screening Assessment?

A Screening Assessment identifies biodiversity risk using site intelligence, local data and planning context. 
When completed by a qualified ecologist, it verifies: 

  • whether your site interacts with protected habitats or species 
  • what surveys are proportionate and when they’re required 
  • how ecology fits into planning validation and BNG duties 

It’s your first step in controlled ecological compliance.

BNG Screening Assessment potential across fields
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Pond near a field suggesting BNG Assessment Checklist potential
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Trigger points — signs your site may need a BNG Screening Assessment

These indicators suggest your site might require more than a basic walkover and may attract LPA scrutiny:

  • local-plan requirements for biodiversity reporting 
  • nearby ponds, hedgerows, scrub or brownfield habitats 
  • previous ecology advice or uncertain baselines 
  • fast-moving programmes that need validation certainty 

LPAs must evaluate biodiversity impact under the Environment Act 2021, NERC Act 2006 (S41) and NPPF Section 15. Handled early, a ProHort Screening Assessment prevents delays and unnecessary survey spend. 
You’ll know exactly where your project stands before design is fixed or planners raise queries. 

What We Deliver

We keep guidance clear and planning-ready — supporting predictable project delivery. 

Service Component Purpose Outcome
Site & Policy Review Identify biodiversity triggers and validation requirements Clear compliance pathway
Screening Verification Analyse aerial, mapping and local data sources Transparent risk confirmation
Ecological Statement Summarise reasoning and next steps Planning-ready documentation
Survey Advice Define proportionate follow-up surveys (if any) Predictable scheduling
Submission Package Deliver report for planning submission Smooth validation and early certainty
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How it Works

Our process is designed to remove friction and keep decisions moving. 

Scope & Review

Send your site boundary, proposal and submission target. We review local-plan policies and data sources.

Screening & Verification

Our ecologists evaluate aerial imagery, habitats and policy triggers, then confirm proportional risk.

Reporting & Submission

Receive a signed Biodiversity Screening Assessment and cover statement ready for validation.

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Timing & Integration

Early screening secures survey capacity and keeps ecology off the project’s critical path. 

That’s how project control is maintained. 

BNG Screening Assessment for Planning

Year-round

Follow-on Species Surveys

Seasonal

BNG integration

Year-round

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Why planning officers use Biodiversity Screening


Submitting a verified screening report demonstrates that you’ve addressed this duty with foresight and proportionality. 

When missing, LPAs routinely issue: 

  • validation refusals 
  • requests for late ecological statements 
  • urgent survey conditions 
  • submission deferrals 

Screening supports compliance under: 

  • Environment Act 2021 (10 % BNG requirement) 
  • NPPF Section 15 — Conserving and enhancing the natural environment 
  • NERC Act 2006 (S41) — Priority Habitats and Species 
  • Town and Country Planning Act 1990 (as amended) 

ProHort assessments are concise enough for validation, robust enough for scrutiny, and trusted nationwide. 

Early screening eliminates those risks. It positions your project as informed, compliant and ready for planning. 

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Our Approach

ProHort’s role is to interpret, evidence and document the screening outcome. You receive a concise ecological statement explaining each finding, built for immediate LPA acceptance. 

Our ecologists review: 

  • local habitats and datasets 
  • policy triggers and validation criteria 
  • ecological indicators visible on or near site 

You receive a signed, LPA-ready report explaining risk level, justification, and next actions. 
That means predictable planning progress from day one. 

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How this supports your project

A well-timed BNG Screening Assessment for Planning: 

  • defines ecological requirements before design lock-in 
  • prevents validation queries and time loss 
  • demonstrates legal compliance under national policy 
  • aligns survey effort to programme timing 
  • keeps ecological cost and scope proportionate 

Early clarity gives planners confidence and developers control. 

Case Insight

A commercial redevelopment in Cheshire needed biodiversity clearance before outline submission. Screening was completed, confirming negligible ecological risk and no further surveys. The application validated immediately — zero queries, zero delay. That’s foresight translated into planning progress.
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Your Next Step

Get the ecological clarity that keeps your design on track. 

Phone: 0800 494 7479

Email: [email protected]

Request Survey Quote

BNG Screening Assessment Checklist FAQ

How does this differ from a BNG Assessment?

Screening comes first, a BNG follows design.

A Biodiversity Screening Assessment sits before the BNG stage. 
It identifies whether BNG or any other ecological survey is required at all. 

A BNG Assessment measures uplift using DEFRA’s Metric 4.0 once design layouts exist. 
Screening simply determines whether you reach that stage — and what’s legally necessary first. 

In short, screening prevents surprises. It saves time, cost and rework by confirming obligations early. 

Not safely. Many LPAs now require biodiversity screening as validation evidence.

No — it’s a desk-based assessment confirming whether surveys are necessary.

Qualified ecologists with CIEEM accreditation and planning experience.

What happens if risk is identified?

We outline proportionate next steps and timing, preventing late-stage escalation.

Yes — combining streamlines data collection and keeps all ecology under one evidence base.

Site boundary, proposal summary and target submission date.

Typically completed within 10 working days.

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Biodiversity Net Gain Assessment

BIODIVERSITY NET GAIN (BNG) ASSESSMENT

Planning-ready Biodiversity Net Gain assessments that define your baseline, set a practical route to uplift, and keep your project moving with clarity and control — delivered nationwide by experienced ecologists. 

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Do you need a Biodiversity Net Gain Assessment?

You’ll need a BNG Assessment if your development falls under the Environment Act 2021 or local planning policy requiring at least a 10 percent net gain. 
Most planning authorities now expect clear, measurable evidence that your design will leave biodiversity better than it found it. 

Early assessment prevents validation delays, redesign, and seasonal constraints that can stall project schedules. 

What is a Biodiversity Net Gain Assessment?

A BNG Assessment quantifies ecological change using the DEFRA Biodiversity Metric 4.0, comparing pre- and post-development habitat value. 
It defines a realistic route to achieve or exceed the 10 % requirement through on-site enhancement, off-site delivery, or statutory biodiversity credits. 

BNG evidence supports planning validation, mitigation design, BNG Metric 4.0 outputs, and long-term management plans — keeping your project compliant and predictable. 

A clear BNG pathway keeps your planning route defensible from first layout to final condition sign-off. 

Scaffolding in the development of a field
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Varied habitat landscape either BNG potential or off site credits use

Trigger points — signs your site needs BNG clarity

These indicators suggest your site might require more than a basic walkover and may attract LPA scrutiny:

  • New build or major infrastructure projects 
  • Brownfield redevelopment with habitat value 
  • Greenfield expansion or edge-of-settlement schemes 
  • Sites near habitat networks or water features 
  • Applications referencing BNG in validation checklists 
  • Local policy or SPD requiring measurable uplift 

Early BNG scoping identifies the simplest route to compliance before design is fixed.

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What We Deliver

We keep guidance clear and planning-ready — supporting predictable project delivery. 

Service Element Purpose Outcome
Baseline Survey & Habitat Classification Map and score existing habitats Verified data for BNG metric
DEFRA Metric Calculation Quantify pre/post development biodiversity units Transparent 10%+ gain evidence
Design Integration Link layout and landscape plans to BNG targets Realistic habitat creation plan
Mitigation & Enhancement Strategy Define habitat measures and maintenance Planning-ready documentation
Off-Site or Credit Assessment Evaluate alternatives if on-site gain is limited Fully compliant BNG route
Monitoring & Management Plans Secure long-term habitat value Predictable compliance over time
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How it Works

Our process is designed to remove friction and keep decisions moving. 

Scoping & Baseline

Review your layout and context to confirm survey and metric requirements.

Habitat Survey & Mapping

Undertake UKHab classification to map baseline value.

Metric Analysis & Design Input

Calculate unit change and advise on layout adjustments or off-site options.

Reporting & Submission

Deliver a planning-ready BNG report aligned to DEFRA and local policy.

Early alignment between design and metric keeps BNG predictable — not reactive. 

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Timing & Survey Windows

Early instruction secures the survey window and keeps ecology off the critical path. 


That’s how project control is maintained. 

BNG integration

Year-round

Follow-on Species Surveys

Seasonal

PEA Survey Season

Year-round

Secure Survey Window
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Why planning officers request BNG Assessments

BNG is now embedded in national policy. Without early clarity, LPAs issue validation queries, request redesigns, or defer decisions until BNG deficits are resolved.

Planners expect structured, defensible evidence showing compliance towards: 

  • Environment Act 2021 — mandatory 10 % net gain 
  • Town and Country Planning Act 1990 (as amended) 
  • NPPF Section 15 — Conserve and enhance the natural environment 
  • DEFRA Metric 4.0 & BNG Guidance 
  • Local Planning Policy and SPD requirements 

Early alignment with these standards ensures your planning authority receives clear, compliant evidence from the first submission — no second rounds required. 

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Our Approach

 ProHort BNG reports are built to meet national and local policy tests, delivered nationwide with clarity and precision. Our reports are written for real-world application, concise enough for planners, and detailed enough for scrutiny. 

Planners expect structured, defensible evidence:

  • Baseline habitats are accurately classified. 
  • Post-development design achieves measurable uplift. 
  • Long-term management is secured. 
  • Off-site measures or credits are proportionate and costed. 

Proactive BNG work demonstrates control, foresight, and credibility. Our methods are transparent and applied consistently nationwide. 

That’s how evidence stays proportionate, design stays on schedule, and your programme keeps moving. 

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How this supports your project

A well-timed BNG: 

  • Establishes a clear habitat baseline early. 
  • Prevents planning delays from missing BNG evidence. 
  • Supports design and layout optimisation. 
  • Integrates with EIA and Protected Species reports. 
  • Provides quantified outputs for planning conditions and the BNG register. 

Securing BNG early keeps planning and construction timelines predictable. 

 

Case Insight

A mixed-use redevelopment needed BNG clarity before reserved matters. Baseline mapping revealed opportunities within existing landscape corridors, achieving a 12 % net gain without off-site credits. The application validated first time, proof that proportionate evidence, done early, protects both schedule and credibility.
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Your Next Step

Get the ecological clarity that keeps your design on track. 

Phone: 0800 494 7479

Email: [email protected]

Request Survey Quote

BNG FAQ - Planning and Programme Clarity

Is BNG mandatory for all developments?

No. The statutory 10% Biodiversity Net Gain requirement applies to most planning applications — major developments from February 2024 and small sites from April 2025 — but several categories are exempt. These include householder applications, permitted development, very small-impact schemes (under 25 m² habitat or 5 m linear habitat), qualifying self-build projects (up to 9 dwellings on ≤0.5 ha), and specific specialist developments such as BNG-delivery sites and certain national infrastructure works. Transitional provisions also exempt applications submitted before the BNG commencement dates.

Using DEFRA Biodiversity Metric 4.0, which scores habitats by area, condition and distinctiveness.

Baseline deficits still require reporting — we confirm risk and document proportionate evidence.

Yes, through registered off-site units or statutory credits if on-site gain is not achievable.

Yes. Most LPAs now treat it as validation evidence for major applications.

Can BNG be combined with EIA or Protected Species work?

Absolutely — we integrate survey data across disciplines to avoid duplication.

Typically 10 working days from survey to submission, depending on project scale.

Yes — we validate inputs and advise on adjustments to satisfy LPA review.

A red-line boundary, layout plan (if available), and target planning dates.

Only positively — early BNG scoping keeps projects on schedule and avoids last-minute policy delays.

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Preliminary Roost Assessment

Preliminary Roost Assessment (PRA) Survey

Planning-ready bat assessments for homes, conversions and development projects across England and Wales. 

Fast, clear and proportionate PRA surveys that establish roost potential, confirm planning risk, and set out a predictable route forward — with reporting written for planners, developers and homeowners.

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Do you need a PRA?

For planners and developers: 
A PRA is the gateway assessment that determines the level of survey required. Submitting planning without it usually results in validation delays or seasonal postponement. 

For homeowners: 
A PRA provides clarity, prevents unexpected survey requests, and ensures work remains lawful. 

You are likely to need a Preliminary Roost Assessment if your project involves: 

  • Loft conversions or roof works 
  • Demolition of any age of building 
  • Refurbishment or re-cladding 
  • Tree works (mature trees, cracks, cavities) 
  • Extensions involving roof lines or eaves 
  • Barn conversions, agricultural buildings, outbuildings 
  • Older structures (pre-1990 are especially scrutinised) 
  • Any site where your PEA flagged roost potential 
  • Planning officers requesting a bat assessment 

 








Aerial view of boundary lines which could trigger a PEA
Aerial view of boundary lines which could trigger a PEA

What is a Preliminary Roost Assessment (PRA)?

A Preliminary Roost Assessment is the first stage of a roosting bats or nesting birds survey. It is a structured inspection of buildings, trees or structures to identify whether bats or birds could be using them. 

A roost doesn’t necessarily look like a nest. 
Bats use surprisingly small openings and often leave no visible signs at all — which is why planners require PRA evidence before demolition, roof works or redevelopment. 

The PRA determines roost potential (negligible, low, moderate or high) and whether a Dusk Emergence Survey is legally required. 

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Trigger points — signs your site needs a PEA

Before development, planners will expect a PRA if any of the following apply: 

Early warning signs: 

  • lifted tiles, gaps in facias or flashing 
  • gaps along ridge lines and under roof tiles
  • cavity walls or hollow voids 
  • cracks, crevices and weathered brickwork  
  • internal signs such as droppings, staining or feeding remains 
  • mature trees with splits, hollows or peeling bark 
  • proximity to woodland, hedgerows or water  

The PRA identifies the level of risk before you commit to further surveys or design changes. 

These small details regularly trigger planning queries — a PRA resolves them early and keeps your project on-track. 

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Land with a range a habitat features, may indicate a PEA is needed
Land with a range a habitat features, may indicate a PEA is needed

What We Deliver

We provide a robust, planning-ready PRA with clear interpretation and next steps. 

Service Purpose Outcome
Preliminary Roost Assessment (PRA) Identify bat roost or nesting bird potential in buildings/trees Negligible/Low/Moderate/High classification + clear next steps
Internal/Endoscope Inspection Check accessible features for evidence Rapid confirmation where features allow
Dusk Emergence Surveys (if required) Confirm presence/ likely absence Legally defensible results for planning
Activity Surveys Assess wider site use Data for layout, lighting, design & mitigation
Mitigation & Licensing Support If roosts are confirmed Proportionate, lawful measures aligned to your programme

Every recommendation is explained in practical terms, so you know exactly what each step means for your build schedule. 

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How it Works

Our process is designed to remove friction and keep decisions moving. 

Scope & Schedule

Send the site location, timeline and project details. We confirm the exact level of survey required.

Fieldwork

PRA surveys are available year-round. Internal inspections and endoscopes used where safe and appropriate.

Reporting & Interpretation

Concise, defensible recommendations outlining next steps and programme impact.

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Timing & Survey Windows

Missing the Spring emergence window normally means waiting until next year. 


We schedule early to secure your position and protect your programme

PRA Survey

Year-round

Dusk Emergence Surveys

Seasonal: May – August

Activity Surveys

May–August

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Why planning officers request PEAs 

All bat roosts,  even if bats are not present, are protected under UK law. Planning authorities must request evidence where roost potential exists. 

Without a PRA, the risks include: 

  • planning refusal or validation queries 
  • enforced delays until Spring survey windows 
  • stop-work notices if roost features are found during works 
  • penalties for disturbing a roost 
  • redesign or licensing requirements 
  • increased project costs due to late discoveries 

Relevant legislation: 

  • Conservation of Habitats and Species Regulations 2017 
  • Wildlife & Countryside Act 1981 
  • National Planning Policy Framework (NPPF) 
  • Local Authority biodiversity policy 

Our commitment: 
We deliver PRA surveys to recognised UK standards, strict legal expectations, and planning-authority requirements — with reporting built for scrutiny, not just submission. 

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Our Approach

We understand the scrutiny that comes with ecology and meet it with clarity, accuracy and planning-focused delivery. 

Your planning-ready report will include: 

  • Roost potential classification (negligible/low/moderate/high) 
  • Clear interpretation: what the rating means for planning 
  • Photographs, evidence and rationale 
  • reasoning behind classification 
  • Presence/likely absence results (if emergence needed) 
  • Planning-ready report 
  • Clear, actionable next steps 
  • any need for emergence surveys  
  • clear explanation of what that means for planning  
  • timelines your contractors can work around 
  • Practical, legally compliant mitigation routes 

Evidence that satisfies planning and guides project teams.

Why homeowners, planners and developers choose ProHort:

  • Nationwide capability across England and Wales 
  • Programme-led scheduling 
  • Reports designed for LPA scrutiny 
  • Straight, practical communication 
  • Specialists in development-focused ecology 
  • Transparent interpretation — no vague language 
  • High trust and high clarity, reinforced at every stage 
  • Fast-track turnaround option.
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How to interpret your PRA Report

Many clients, especially homeowners, are unsure what “negligible”, “low”, “moderate” or “high” means in practice. 

Your report explains: 

  • Whether bats were present 
  • What “likely absence” means legally 
  • Whether any parts of your project can proceed now 
  • Whether timing restrictions apply 
  • Whether a licence is required (only if a roost is confirmed) 
  • How to plan works safely and legally 

We also add summaries, so you understand exactly what the outcome means for your build, budget and schedule. 

Case Insight

A semi-detached property required a loft conversion. The PRA identified low roost potential due to lifted tiles and cavity access. One dusk emergence survey in June confirmed likely absence. Planning validated immediately and the contractor proceeded without redesign or delay.
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Your Next Step

Get the clarity that keeps your design on track. 

Phone: 0800 494 7479

Email: [email protected]

Request Survey Quote

FAQ - Preliminary Roost Assessment

What is a Preliminary Roost Assessment (PRA)?

A PRA is an ecologist-led inspection of buildings or trees to identify potential bat roost or nesting bird features and assess the likelihood of bats or birds using the structure. It determines the site’s “roost potential rating” (negligible / low / moderate / high) and confirms whether dusk emergence surveys are required for planning. 

Most developments that involve roof works, demolition, conversions, barn alterations or tree removal will require a PRA — even if the property appears modern or well-sealed. LPAs frequently request PRA evidence before validating planning applications. 

An ecologist inspects the exterior and interior (where accessible) for roost features such as lifted tiles, gaps, cracks, cavities, soffits, timber joints or crevices. They also look for bat signs such as droppings, staining or feeding remains. Findings are used to assign a roost potential level.

These classifications indicate the likelihood that bats could use the building or tree. 

  • Negligible = no features for roosting bats 
  • Low potential = some features that may support bats 
  • Moderate potential = several features likely to be used 
  • High potential = strong evidence or ideal conditions 

Each level influences whether dusk emergence surveys are required. 

Sometimes. If the PRA confirms negligible potential, it is often sufficient. If low, moderate or high potential is identified, most LPAs require dusk emergence surveys before determining the application.

How long does a PRA take?

Typically, 1–2 hours on-site, depending on property size and access. Reports are usually completed within standard delivery times unless urgent scheduling is required.

All year round. This makes PRA the best early-stage action to prevent seasonal delays.

If the ecologist finds clear signs of an active roost, this may trigger a need for a mitigation licence. We advise next steps immediately and outline safe, legal routes forward.

Only if the works risk disturbing or destroying a confirmed roost. Many projects avoid licensing entirely through timing, design tweaks or mitigation. 

No — a PRA speeds things up by confirming whether emergence surveys are needed. Early completion prevents validation queries and missed seasonal windows.

Yes. PRA assessments are available year-round and we prioritise time-sensitive development programmes.

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Environmental Impact Assessment (EIA)

ENVIRONMENTAL IMPACT ASSESSMENT (EIA)

Planning-ready ecological evidence for Environmental Impact Assessments — defensible reasoning, proportionate methods and predictable outcomes that keep large-scale projects moving across the UK. 

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Do you need an EIA?

If your project meets EIA Regulations thresholds or your LPA has issued a screening opinion, you’ll need formal ecological input. 
These assessments form part of the Environmental Statement and must withstand technical scrutiny from planners, consultees and statutory bodies. 

Handled early, EIA ecology turns regulatory obligation into programme control. 
Late scoping, by contrast, triggers multi-season survey cycles and costly resubmissions. 

What is an EIA?

EIA assesses how development will affect ecological receptors, habitats, species and designated sites, through construction, operation and long-term management. 
It forms one chapter of the Environmental Statement and connects directly with other technical disciplines such as drainage, noise and landscape. 

Aerial view of boundary lines which could trigger a PEA
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Land with a range a habitat features, may indicate a PEA is needed

Trigger points — signs your site needs an EIA

These indicators suggest your site might require more than a basic walkover and may attract LPA scrutiny:

  • Schedule 1 or 2 EIA development thresholds exceeded 
  • proximity to SAC, SPA, SSSI or LWS/SINC designations 
  • large-scale habitat loss or complex receptor networks 
  • multi-phase or long-term construction activity 
  • interaction with drainage, lighting or landscape corridors 
  • potential effects on protected or notable species 
  • high public or consultee sensitivity 

If any apply, scoping now secures survey capacity and prevents multi-year programme drift. 

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What We Deliver

We keep guidance clear and planning-ready — supporting predictable project delivery. 

Service Purpose Outcome
Ecological Scoping Identify receptors, constraints and survey effort Focused, proportionate EIA scope
Baseline Surveys Map habitats and species risk Solid data for significance testing
Receptor Evaluation Determine ecological importance Transparent impact reasoning
Impact Assessment Assess construction, operational and cumulative effects Defensible ecological conclusions
Mitigation Hierarchy Avoid, reduce and compensate Clear environmental control
Significance Assessment Evaluate magnitude and likelihood Evidence aligned to EIA regs
Monitoring & Management Provide long-term ecological oversight Predictable compliance
Full EIA Ecology Chapter Structure findings for submission Planning-ready ES evidence
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How it Works

Our process is designed to remove friction and keep decisions moving. 

Screening & Scoping

We review your proposal, screening opinion and environmental sensitivities to define a proportionate ecology scope.

Baseline Surveys

Targeted habitat and species surveys using nationwide methods consistent with CIEEM and Natural England guidance.

Impact Assessment

Construction and operational effects evaluated with clear significance reasoning.

Reporting & Integration

We produce a concise, policy-linked ecology chapter ready for submission within the Environmental Statement.

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Timing & Survey Windows

Early clarity keeps ecology off the critical path — late starts rarely recover lost time. 

EIA Survey

Year-round

Follow-on Species Surveys

Seasonal

BNG Survey

Year-round

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Why planning officers request PEAs 

Under the EIA Regulations (2017 as amended), LPAs must consider ecological significance when determining major applications. Planners depend on structured, transparent evidence, compliant with legislation.

An EIA aligns with: 

  • The Town and Country Planning (Environmental Impact Assessment) Regulations 2017 (as amended) 
  • Conservation of Habitats and Species Regulations 2017 
  • Wildlife and Countryside Act 1981 
  • NERC Act 2006 (Section 41 priority species and habitats) 
  • National Planning Policy Framework (Section 15) 
  • Local plan ecology policies 

ProHort delivers consistent, regulation-ready evidence nationwide — concise enough for planners, robust enough for inquiry. 

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Our Approach

We translate ecological complexity into planning certainty.

A planning-ready EIA ecology chapter includes: 

  • verified ecological baseline and mapping 
  • evaluation of key receptors and significance 
  • mitigation hierarchy and cumulative impact assessment 
  • proportionate monitoring and management proposals 
  • full integration with EIA methodology and BNG data 

Our ecologists scope proportionately, survey precisely and report concisely — aligning every recommendation to EIA procedure and programme timelines.

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How this supports your project

Robust EIA ecology keeps dialogue efficient, predictable and defensible. 

A well-timed EIA delivers structured, transparent evidence that demonstrates: 

  • complete baseline data and receptor evaluation 
  • quantified impact significance and residual effects 
  • compliance with the mitigation hierarchy 
  • integration with the BNG metric and long-term management 

Starting scoping in Q1 protects survey continuity through spring, summer and autumn windows. 
Early scheduling also prevents BNG, drainage and landscape teams from competing for data dependencies. 

Case Insight

A major infrastructure scheme required full EIA ecology across multiple receptor groups. Early scoping defined survey tiers precisely, preventing the need for a second season of data. The final ecology chapter integrated seamlessly with hydrology and landscape disciplines, achieving LPA approval without resubmission. That’s how proportionate ecology protects programme certainty.
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Your Next Step

Get the ecological clarity that keeps your design on track. 

Phone: 0800 494 7479

Email: [email protected]

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PEA FAQ - Planning and Programme Clarity

Do all large projects need EIA ecology?

Only those meeting EIA thresholds or receiving a screening direction. We confirm scope quickly.

Not if the development qualifies legally as EIA — the ecology chapter is mandatory.

Usually one full season for baseline work, but multi-receptor projects can extend into a second. Early scoping avoids rollover.

Yes — baseline data feeds directly into DEFRA Metric 4.0 for measurable uplift.

Late ecological mobilisation and incomplete baseline data. Both are preventable with early scheduling.

Do we need cumulative impact assessment?

Usually for large, multi-phase or adjacent developments. We clarify this during scoping.

With a boundary, scheme description and screening information, mobilisation can begin immediately.

Usually within one week of fieldwork, faster where programmes demand it. 

Site boundary, scheme details, screening/scoping opinion and target submission date.

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Preliminary Ecological Appraisal

PRELIMINARY ECOLOGICAL APPRAISAL (PEA)

Planning ready ecological appraisals that identify constraints early, stabilise design and keep your project moving with clarity and control — delivered nationwide by qualified ecologists. 

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Do you need a PEA?

If your project involves vegetation, buildings or ground boundaries, early ecological clarity is essential. 
A Preliminary Ecological Appraisal provides it — the recognised first stage under NPPF Section 15 and CIEEM best practice. 

When completed before design lock-in, a PEA turns uncertainty into foresight. 
Each week gained here protects months later in the programme. 

What is a PEA?

A PEA establishes your ecological baseline, recording habitats, identifying protected species potential and mapping planning risk. 

Aerial view of boundary lines which could trigger a PEA
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Land with a range a habitat features, may indicate a PEA is needed

Trigger points — signs your site needs a PEA

These indicators suggest your site might require more than a basic walkover and may attract LPA scrutiny:

  • vegetation clearance or landscaping 
  • alteration to roofs, barns or outbuildings 
  • hedgerow or treeline removal 
  • groundwork near ditches, scrub or rubble piles 
  • ponds or wet features on or near the site 
  • earlier advice highlighting ecological uncertainty 
  • tight programmes overlapping seasonal windows 

If any apply, acting now secures survey capacity while it’s still available. Delay it and ecology becomes the factor that dictates your timeline. 

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What We Deliver

We keep guidance clear and planning-ready — supporting predictable project delivery. 

Service Purpose Outcome
Ecological Walkover Record habitats and features Solid ecological baseline
Protected Species Screening Assess realistic species risk Focused next steps
Mapping & Site Context Identify constraints and opportunities Evidence planners can trust
Survey Roadmap Outline seasonal requirements Predictable sequencing
Practical Mitigation Guidance Inform design and construction Reduced ecological and schedule risk
Integration with BNG/Design Align ecology with wider goals Cleaner design development
Reporting & Recommendations Deliver structured reasoning Planning ready evidence
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How it Works

Our process is designed to remove friction and keep decisions moving. 

Scope & Project Insight

Send your boundary and proposed works. We confirm scope against policy and planning context.

Fieldwork

On-site ecological walkover using DEFRA-aligned UKHab methods.

Reporting

Concise, defensible recommendations outlining next steps and programme timing.

Each report follows CIEEM and Natural England methodology, ensuring evidence stands up anywhere in the UK. 

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Timing & Survey Windows

Early instruction secures the survey window and keeps ecology off the critical path. 


That’s how project control is maintained. 

PEA Survey Season

Year-round

Follow-on Species Surveys

Seasonal

BNG integration

Year-round

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Why planning officers request PEAs 

Local authorities must protect biodiversity under the Wildlife & Countryside Act 1981, Habitats Regulations and NERC Act 2006. 
They rely on PEAs to confirm that risk has been identified and managed proportionately. 

For your project, this means fewer validation queries and smoother dialogue. 
A clear PEA shows you’ve anticipated compliance — not waited for enforcement. 

That foresight keeps planning predictable. 

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Our Approach

Each ProHort appraisal follows CIEEM guidance, Natural England standards and UKHab classification, producing reports LPAs recognise immediately. 

It includes: 

  • ecological walkover 
  • protected species risk screening 
  • mapping and site context 
  • practical, proportionate recommendations 
  • a predictable survey roadmap 

Every PEA is built around the project, not the paperwork. We interpret each site through the lens of planning delivery, balancing ecological rigour with programme momentum. 

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How this supports your project

A well-timed PEA: 

  • identifies constraints before design lock-in 
  • aligns ecology with planning milestones 
  • fulfils baseline duties under national and local policy 
  • defines survey strategy and seasonal timing early 
  • integrates seamlessly with BNG or EIA ecology 

Early clarity maintains schedule stability. Later discovery creates delay. 
This is where foresight pays off. 

Case Insight

A mixed-use scheme showed treeline habitats with moderate species potential. A PEA confirmed low bat and manageable reptile risk, defining a single targeted follow-up. No redesign, no resubmission — just evidence that satisfied validation first time. Foresight protected the schedule.
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Your Next Step

Get the ecological clarity that keeps your design on track. 

Phone: 0800 494 7479

Email: [email protected]

Request Survey Quote

PEA FAQ - Planning and Programme Clarity

Is a Preliminary Ecological Appraisal enough for planning?

Often. If habitats are low value and species risk minimal, a PEA can satisfy planning validation under the NPPF and local policy. Where risk is higher, we outline exactly what’s next — and when. 

Typically 12 to 24 months, depending on site change. If habitats alter, the appraisal should be refreshed before submission.

Only qualified CIEEM-registered ecologists working to recognised standards. Using unqualified consultants risks rejection at validation.

Yes. Walkovers are season neutral. Only protected species follow-ups depend on weather windows.

Yes. The PEA provides the ecological baseline required for the DEFRA Metric 4.0 calculation.

Do small developments still need one?

If boundaries, trees or vegetation are affected, most LPAs expect a proportionate PEA. It’s the entry ticket to planning validation.

We clarify which surveys are justified under the Wildlife & Countryside Act or Habitats Regulations, and align timing to your schedule.

Usually within one week of fieldwork, faster where programmes demand it. 

Sometimes. It depends on LPA stance. We confirm the cleanest route for your application.

It accelerates. It’s the difference between submitting once or being queried twice.

A red-line boundary, brief works description and target planning dates. We’ll scope, cost and schedule immediately.

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Tree Damage Survey

Tree Damage Survey

Focused assessments to confirm whether trees are causing structural, surface or drainage damage — clear evidence, measured solutions and stable decision-making. 

Damage around trees often appears suddenly: lifting surfaces, cracked walls, displaced paving or recurring drainage issues. A Tree Damage Survey identifies whether the tree is directly involved, indirectly contributing, or simply nearby. 

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When damage appears, assumptions aren’t enough...

Tree-related damage is frequently misunderstood. Some symptoms look significant but are unrelated; others reveal a genuine structural interaction. A clear assessment distinguishes cosmetic issues from real risk, helping you avoid unnecessary works or delays.

What is a Tree Damage Survey?

A Tree Damage Survey investigates whether a tree is contributing to structural, surface or drainage damage by assessing: 

  • root pathways and physical root pressure 
  • proximity, species and growth characteristics 
  • soil behaviour and local ground conditions 
  • cracks, displacement and surface lifting 
  • drainage conflicts and root ingress 
  • structural context and load distribution 

The assessment provides a clear conclusion on whether tree influence is: 

confirmed, possible, or unlikely. 

Reports are suitable for planning, structural investigations, insurance queries and contractor guidance. 

Pavement cracked and lifted by tree roots, indicating subsurface root damage.
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Do I need a Tree Damage Survey?

You may need a tree damage survey if you’ve seen:

  • lifting or cracked driveways or paths 
  • displaced retaining walls 
  • recurring damage to hard landscaping 
  • roots emerging at the surface 
  • drainage blockages or infiltration 
  • cracks appearing near trees or hedgerows 
  • damage raised by surveyors, planners or insurers 

A Tree Damage Survey identifies the cause and sets out proportionate next steps.

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Mature tree emerging through a damaged brick wall, suggesting absent or insufficient AIA assessment.

Why this matters for planning

Trees fall under planning legislation as material considerations. 
When damage occurs, LPAs require reliable evidence to determine: 

  • whether a tree is genuinely causing harm 
  • whether removal or pruning is justified 
  • whether designs need modification 
  • whether conditions should be applied 

Without clear reporting, applications may stall, trigger further questions or require design changes. 

A Tree Damage Survey includes:

A clear, practical and defensible assessment: 

  • on-site inspection of damage type and extent 
  • species identification and growth characteristics 
  • proximity assessment and root pathway analysis 
  • evaluation of soil behaviour and ground conditions 
  • cracking and displacement interpretation 
  • drainage interaction checks (where relevant) 
  • assessment of tree involvement: likely / possible / unlikely 
  • proportionate recommendations 
  • guidance for planning, engineering or contractor work 
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Our Approach

Evidence-First

Diagnosis based on visible symptoms, structural context and root behaviour.

Measured Solutions

No exaggerated claims. Recommendations are aligned with real risk.

Planning Aware

Reporting structured to support planning decisions and avoid unnecessary delays.

Straight Communication

Clear explanations without technical fog.

Tree Damage Survey Process

Step Description
1. Initial Review Provide photos, site details and any previous notes.
2. Site Assessment Inspection of trees, surfaces, structures and ground conditions.
3. Diagnosis Tree involvement identified as confirmed, possible or unlikely.
4. Recommendations Options aligned to risk and project requirements.
5. Reporting A clear, planning-ready and contractor-friendly report.
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Your Next Step

Need a Tree Damage Survey? Share your site details and we’ll confirm exactly what’s required. 

Phone: 0800 494 7479 
 Email: [email protected] 

Request Survey Quote

Case Note

A modern detached property showed lifting to a block-paved driveway near a mature silver birch.
Surface displacement suggested possible root pressure. Assessment confirmed shallow, fibrous roots directly beneath the paving, with no structural impact to the house. The issue was classed as a surface-level conflict. Localised root pruning and correct reinstatement of the driveway resolved the problem without tree removal.
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Tree Damage Survey FAQs

Can roots physically damage foundations?

In some cases, yes — especially shallow or older foundations. Most damage occurs in hard surfaces or drainage systems. 

Root spread varies by species and soil, often extending at least as far as the canopy and sometimes beyond. 

No. Poor installation, drainage issues or ground movement can cause similar symptoms. 

Often, yes. Proportionate pruning or targeted works may address the issue without removal. 

Only where evidence is clear. A Tree Damage Survey provides that clarity. 

Is pruning enough to stop damage?

Sometimes. It depends on species, size and the nature of the conflict. 

Yes, especially where joints are already compromised. 

For structural damage, joint input may be useful. Assessment will confirm whether this is necessary. 

It depends on species, soil conditions and local movement patterns. This is assessed on site.

Photos, site layout, tree species (if known) and details of when the issue began. 

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Tree Health Survey

Tree Health Surveys

Focused assessments that identify structural, physiological or safety issues in trees — practical evidence for planning, management and risk-based decisions. 

Declining trees can create uncertainty: reduced vitality, deadwood, cavities, fungal fruiting bodies or changes in canopy structure. A Tree Health Survey provides clear, proportionate guidance on condition, risk and appropriate management. 

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Healthy or not, trees change and clarity keeps sites safe...

Tree condition shifts quietly over time. Some issues are cosmetic; others need attention. 

A structured health assessment explains what’s happening, how serious it is and what management is appropriate. 

What is a Tree Health Survey?

A Tree Health Survey evaluates the structural and physiological condition of a tree by assessing: 

  • vitality, crown density and canopy structure 
  • stem, branch and root condition 
  • presence of decay, cavities or fungal indicators 
  • pest and disease symptoms 
  • structural defects and load distribution 
  • potential failure points 
  • surrounding context and site use 

The outcome is a clear picture of current health, foreseeable risk and recommended maintenance. 

Reports can be tailored for planning, safety management, insurers, landowners and estates. 

Tree split in half with a major stem failure, indicating the need for an urgent tree health and condition survey.
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Do I need a Tree Health Survey?

You may need one if you’ve noticed: 

  • declining leaf density or early leaf drop 
  • branches dying back or hanging limbs 
  • cavities or fungi at the base or stem 
  • cracks, splits or included unions 
  • unusually heavy leaning 
  • storm damage or recent instability 
  • concerns raised by contractors, neighbours or planners 

A Tree Health Survey provides clear, risk-based recommendations. 

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Group of mature, old trees likely to be protected under a Tree Preservation Order (TPO).

Our Approach

Condition Focused

Assessment grounded in visible symptoms and structural behaviour.

Risk Appropriate

Recommendations aligned to actual defect significance.

Planning Aware

Clear evidence for retention, pruning or justified removal.

Technically Clear

Plain-English explanations of defects and impacts.

What We Deliver

Step Description
1. Initial Review Provide photos, site details and any previous notes.
2. On-Site Assessment Inspection of the tree’s structure, vitality, rooting environment and surroundings.
3. Diagnosis Defects and health indicators interpreted within industry standards.
4. Recommendations Options for maintenance, monitoring or further investigation.
5. Reporting A clear, planning-compatible and contractor-friendly report.
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Why this matters for planning

Tree health influences planning decisions under the Town & Country Planning Act 1990. 


LPAs may request evidence to understand: 

  • whether a tree is safe to retain 
  • whether removal or reduction is justified 
  • how condition interacts with site layout 
  • whether protection measures are required 

Unclear condition assessments can lead to delays, queries or revised designs. 

A Tree Health Survey includes:

A clear, practical assessment of tree condition: 

  • vitality and canopy assessment 
  • structural inspection of stem, branches and unions 
  • evaluation of decay, cavities and fungal indicators 
  • root condition and rooting environment 
  • pest and disease identification (where applicable) 
  • risk rating based on defect significance 
  • recommended maintenance or monitoring 
  • suitability for retention in planning contexts 
  • safety guidance for landowners and contractors 
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Your Next Step

Need an invertebrate survey? We’ll confirm what’s required and align survey windows with your programme.

Phone: 0800 494 7479 
 Email: [email protected] 

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Case Note

A mature oak showed progressive dieback along one side of the canopy, raising safety concerns near a public footpath.
Inspection found a significant cavity at the lower stem and a fungal fruiting body indicating internal decay. Load distribution and site context were evaluated, and the cavity was assessed as structurally significant. Target-based risk assessment supported staged reduction rather than full removal, retaining the tree while managing risk appropriately.
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Tree Health Survey FAQs

Does decay always make a tree unsafe?

No. Some decay is manageable. The location, extent and progression determine risk. 

Fungal fruiting bodies indicate decay activity, but the severity varies widely. Assessment clarifies significance. 

Sometimes. Vitality depends on species, age, soil conditions and current stress. 

No. Many can be managed through pruning or monitoring

Only where evidence is clear. A Tree Health Survey provides that evidence. 

Do I need a full BS 5837 survey as well?

Only if development interacts with root protection areas or crown spread. 

Not always. Some lean naturally. Assessment clarifies whether the lean is historic or active.

Some can. Identification helps avoid wider impact. 

Not necessarily. It depends on species resilience and defect severity. 

Photos, site address, species (if known) and details of recent symptoms.

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Arboricultural Impact Assessment

Arboricultural Impact Assessment (AIA)

Planning-ready BS 5837 assessments that identify how your development interacts with trees — clear constraints, practical mitigation and predictable outcomes. 

Designs evolve, layouts shift and tree constraints become clearer with every stage. An AIA gives planners and design teams the exact evidence they need to progress without unnecessary redesigns or delays. 

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Design meets trees — and certainty keeps projects moving

Conflicts with root protection areas, shading, overhang or retention categories can stall progress at the wrong moment. 
 A focused AIA shows how your layout interacts with every relevant tree and sets out reasonable, proportionate solutions. 

What is an Arboricultural Impact Assessment (AIA)?

An AIA evaluates how a proposed development affects trees on and around the site. 
Under BS 5837, it assesses: 

  • root protection areas (RPAs) 
  • above-ground constraints (crown spread, shading, future pressure) 
  • retention categories 
  • construction impact and design conflicts 
  • access, storage and working areas 
  • tree retention feasibility 
  • required mitigation 

The result is a clear, planning-ready assessment showing how tree constraints have been considered and managed. 

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Mature tree emerging through a damaged brick wall, suggesting absent or insufficient AIA assessment.

The AIA Process

Step Description
1. Initial Review Share the layout, site plan and any existing survey data.
2. Site Survey Assessment of tree condition, RPAs, crown spread and constraints.
3. Impact Assessment Evaluation of design conflicts and retention feasibility.
4. Mitigation Strategy Foundation advice, protection measures and design adjustments (if needed).
5. Reporting A clear, BS 5837-compliant report ready for submission.

We keep guidance clear and planning-ready — supporting predictable project delivery. 

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Our Approach

Practical Mitigation

Foundation options, construction routes and protection measures built around real site conditions.

Design Aligned

Clear explanations of how tree constraints interact with the proposal.

Planning Led

Reports structured for direct LPA interpretation

Technical Clarity

Evidence presented cleanly, without ambiguity.

Do I Need an AIA?

You may need an AIA if: 

  • your layout falls within any RPA 
  • access routes pass near trees 
  • designs include new hard surfaces, levels changes or foundations close to trees 
  • shading or overhang affects proposed rooms or gardens 
  • you’re planning new utilities, drainage or service runs 
  • planners request BS 5837 evidence 
  • your architect highlights tree constraints 
  • your PEA has already flagged arboricultural considerations 

An AIA clarifies design impacts and prevents late-stage planning queries. 

Why this Matters for Planning

Tree constraints are a formal material consideration under the Town & Country Planning Act 1990 and BS 5837. 
LPAs expect: 

  • clear mapping of constraints 
  • justification for removals 
  • practical mitigation where conflicts occur 
  • predictable construction methodology 
  • retention aligned with site use and long-term pressure 

Weak evidence leads to validation delays, redesign requests or planning conditions tied to tree protection. 

 

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Case Note

A proposed rear extension conflicted with the Root Protection Area of a mature sycamore. Initial designs placed new foundations within the RPA. Impact assessment showed feasible retention using a reduced-dig foundation and a revised service route. A TPP supported the updated design, and planning progressed without further tree-related queries.
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Your Next Step

Need an invertebrate survey? We’ll confirm what’s required and align survey windows with your programme.

Phone: 0800 494 7479 
 Email: [email protected] 

Request Survey Quote

AIA Survey FAQs

Can we build within a Root Protection Area?

Sometimes. It depends on the depth, method and impact. Alternative foundation designs may be acceptable.

No. Retention depends on category, condition, value and planning context.

If the works interact with RPAs or crown spread, planners often request one. 

Yes. Findings often guide practical adjustments early enough to avoid delays. 

Clear AIA evidence prevents validation issues and reduces LPA queries. 

What if the design conflicts with a tree?

Mitigation may resolve it. If not, justified removal may be supported where evidence is clear.

Yes. Planners often consider light levels for proposed rooms and gardens. 

Yes. The AIA interprets impacts; the tree survey provides baseline data.

Only where development interacts with retained trees. 

Site plan, layout, access routes and any existing surveys.

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Protected Species Surveys

Protected Species Surveys

Planning-ready ecological surveys for development projects — delivered with clarity, proportionate methods and practical guidance across all protected species in the UK.

Whether you’re preparing a planning submission, progressing a design, or managing a construction timeline, accurate ecological evidence is critical. Our team helps you understand what’s required, when it’s needed, and how to keep your project moving without unnecessary delays.

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Which Survey do I need?

Each species has its own survey season, legal protections, and planning requirements, which means timing and method matter — especially for developers working toward fixed programmes.

Badger Surveys

When: scrub, woodland edges, or embankments show sett signs.

Purpose: identify sett activity, territory use and protection requirements.

Timing: Most of the year (avoid sett disturbance Feb–June); year-round for scoping (PEA).

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Badger roaming through woodland habitat, indicating potential sett presence in the area.
Gloved hand gently holding a great crested newt, indicating the presence of a protected species.

Great Crested Newt (GCN) Surveys

When: ponds, ditches or wetlands occur within 250 m of proposed works.

Purpose: assess breeding presence, terrestrial use and mitigation needs.

Timing: mid-March–June (eDNA April–June; traditional surveys mid-April–June); year-round for scoping (PEA).

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Reptile Surveys

When: rough grassland, brownfield, or sunny scrub provides potential habitat.

Purpose: record presence, population and define proportionate mitigation.

Timing: April–September (weather-dependent); year-round for scoping (PEA).

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Reptile resting on natural ground cover, indicating suitability for a snake and reptile survey.
Birds feeding on a garden feeder, indicating active bird presence suitable for a bird survey.

Bird Surveys

When: vegetation clearance, tree works or demolition overlaps nesting season.

Purpose: confirm nesting activity, inform timing and avoid offence under the Wildlife & Countryside Act.

Timing: nesting activity March–August; year-round for scoping (PEA)

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Invertebrate Surveys

When:brownfield mosaics, meadows or wetlands may host notable assemblages.

Purpose: evaluate habitat structure and invertebrate value for BNG and planning.

Timing: April–September (weather-dependent; early scoping reduces BNG risk on high-distinctiveness sites); year-round for scoping (PEA).

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Butterfly resting on vegetation, indicating invertebrate activity suitable for an invertebrate survey.

Your Next Step

Not sure which survey you need? Contact us today!

Phone: 0800 494 7479 
 Email: [email protected] 

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Protected Species Survey FAQs

What Are Protected Species Surveys?

Protected species surveys identify whether legally protected wildlife could be affected by your proposed works. 
These include species such as: 

  • bats 
  • badgers 
  • great crested newts (GCN) 
  • reptiles 
  • birds 
  • invertebrates 

Each species has its own survey season, legal protections, and planning requirements, which means timing and method matter — especially for developers working toward fixed programmes. 

Protected species legislation applies regardless of land ownership.

Planning authorities require ecological evidence to ensure: 

  • species are not harmed 
  • habitats are properly assessed 
  • designs avoid unnecessary conflict 
  • developers meet BNG requirements 
  • licensing is only used when essential 

Early surveys prevent: 

  • validation delays 
  • redesign 
  • forced seasonal pauses 
  • mid-construction stoppages 

A proactive approach keeps your project predictable.

How ProHort Helps Your Project

Our approach is practical, proportionate and planning-aligned. You get: 

  • Straightforward, plain-English explanations 
  • Clear survey timings 
  • Proportionate recommendations (no over-escalation) 
  • Planning-ready reporting 
  • Support for BNG and method statements 
  • Optional licensing guidance (only when needed) 
  • Realistic next steps for your project team 

From small extensions to large multi-phase schemes, we scale to your needs. 

These are the specialist surveys we deliver across all legally protected species. 

Each service has its own methods, survey windows and planning role. 

Bat Surveys 
Roost assessments, activity surveys and dusk emergence surveys. 

Badger Surveys 
Sett surveys, activity mapping and proportionate mitigation advice. 

GCN Surveys & eDNA Testing 
HSI assessments, eDNA sampling and full presence/absence surveys. 

Reptile Surveys 
Presence/absence surveys and habitat suitability assessments. 

Bird Surveys 
Nesting bird checks and breeding bird surveys (BBS). 

Invertebrate Surveys 
Targeted invertebrate sampling and habitat assessments. 

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