Tree Surveys for Planning (BS 5837) in Sussex
Is a Tree Survey stalling your planning application in Sussex?
We step in with clear, technically sound BS 5837 evidence that Sussex planners can rely on to validate layouts, test feasibility and keep applications moving without redesign or delay.
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Do you need a Tree Survey for Planning in Sussex?
If trees sit on or near your site in Sussex, your planning application is highly likely to require a BS 5837 Tree Survey. Root protection areas, crown spread, access positioning and tree quality all influence whether a layout is acceptable. Without early arboricultural evidence, even small schemes can trigger validation delays, redesign requests or restrictive conditions.
We confirm what’s required quickly and proportionately so your application stays on track.
Across Sussex, tree constraints frequently shape planning decisions where development interacts with established suburban and semi-rural landscapes.
This commonly includes:
Residential areas across Brighton, Hove, Horsham and Crawley, where mature garden trees affect extensions, rear development and access
Edge-of-settlement sites near market towns and villages, where retained trees influence layout, visibility and open space provision
Previously developed land, where long-established screening and boundary planting are expected to be considered in design
Semi-rural plots across the High Weald and South Downs fringe, where tree groups sit close to foundations and service runs
In these settings, Sussex planning officers expect clear evidence that tree constraints have informed layout from the outset.
We undertake Tree Surveys for Planning across Brighton, Crawley, Horsham and neighbouring settlements, supporting residential and commercial development throughout Sussex.
Why Planning Authorities Require a Tree Survey in Sussex
Sussex planning authorities rely on clear arboricultural evidence to assess whether development layouts properly respond to existing trees. Trees are a material planning consideration under the Town and Country Planning Act 1990, with national policy reinforced through the NPPF and technical requirements set out in BS 5837 (Trees in relation to design, demolition and construction). Where proposals affect root protection areas, canopy spread or retained tree quality, planners must be satisfied that designs are feasible, proportionate and deliverable.
When arboricultural evidence is unclear or incomplete, applications are commonly delayed, conditioned or returned for revision.
Local Case Insight
The Process - Tree Surveys for Planning
Our Tree Surveys for Planning are commercially aware, proportionate and planning-led, designed to support real-world construction sequencing, access logistics and foundation strategy without unnecessary escalation.
Key Deliverables for Tree Surveys in Sussex
A planning-focused output that Sussex planners can rely on:
BS 5837 tree survey and constraint data
Root protection area calculations and crown spread mapping
Retention categorisation with management commentary
Clear, decision-ready planning summary
This evidence supports confident layout design and predictable validation outcomes.
Step 1
Site Review
Scope and LPA requirements confirmed from site boundary and draft layout.
Step 2
On-site Survey
All relevant trees measured and assessed to BS 5837 standards.
Step 3
Interpretation
&
Mapping
Constraints, RPAs and canopy spread mapped for direct design use.
Step 4
Integrated
Planning
Support
Any integration with AIAs, Tree Protection Plans, drainage layouts or foundation strategies
Next Steps
Send your site details today and we’ll confirm exactly what your Sussex project requires.
FAQ - Tree Surveys for Planning in Sussex
Why might a BS 5837 tree survey be needed for planning in Sussex?
A BS 5837 tree survey may be needed where trees are present on or close to a proposed development site. In Sussex, this can apply to residential extensions, new builds, rural conversions, access changes, and commercial schemes. The survey helps identify tree constraints early so the proposal can respond properly to retained trees.
What does a BS 5837 tree survey assess?
A BS 5837 tree survey assesses tree species, height, stem diameter, canopy spread, age class, condition, and retention value. It also calculates Root Protection Areas and records tree constraints that could influence building positions, driveways, drainage, service routes, and construction access.
Can trees near a boundary affect my planning application?
Yes. Boundary trees and neighbouring trees can affect a planning application if their canopies or Root Protection Areas extend into the development site. A BS 5837 survey considers trees within influencing distance, even where they are not owned by the applicant, because they may still constrain excavation, layout, and construction activity.
Does a tree survey need to be completed before plans are finalised?
Ideally, yes. Completing a tree survey before plans are finalised allows the design team to understand tree constraints before committing to a layout. This can help avoid redesign, reduce planning delays, and make it easier to demonstrate that important trees have been properly considered.
What is an Arboricultural Impact Assessment?
An Arboricultural Impact Assessment, often called an AIA, explains how a proposed development may affect existing trees. It considers tree removals, retained trees, Root Protection Areas, construction impacts, and mitigation measures. For planning applications, it is often prepared after the initial BS 5837 tree survey.
Will a BS 5837 tree survey show which trees can be retained?
Yes. Trees are categorised in accordance with BS 5837:2012, helping identify trees of high, moderate, low, or limited retention value. This gives planning officers and design teams a clear understanding of which trees make the strongest contribution to the site and which may present fewer constraints.
Are Tree Preservation Orders relevant to BS 5837 surveys in Sussex?
Yes. Trees protected by a Tree Preservation Order or located within a Conservation Area require careful consideration during the planning process. A BS 5837 survey helps identify how protected or important trees could be affected and supports a design that avoids unnecessary conflict with local planning requirements.
Which planning authority may request a BS 5837 tree survey in Sussex?
Requirements vary depending on whether the site falls within East Sussex, West Sussex, Brighton & Hove, or a district planning authority. East Sussex County Council provides planning guidance and local planning information here: https://www.eastsussex.gov.uk/planning/applications. Applicants should check the relevant local authority before submitting.
What happens if tree protection is not addressed in a planning application?
If tree protection is not addressed where trees are relevant to a proposal, the planning authority may request further information, delay validation, or raise concerns during assessment. A BS 5837 tree survey and supporting arboricultural documents help show how retained trees will be protected throughout construction.
What documents can support a planning application involving trees?
A planning application involving trees may need a Tree Constraints Plan, Arboricultural Impact Assessment, Tree Protection Plan, and Arboricultural Method Statement. These documents explain the tree constraints, proposed impacts, and practical protection measures required before and during construction.
