Arboricultural Impact Assessment (AIA) in Surrey
Is tree impact uncertainty putting your Surrey layout at risk?
We provide clear, defensible Arboricultural Impact Assessments that explain how retained trees interact with layouts, access and foundations so planners and designers can move forward with confidence.
Fast, Clear, Planning-Ready Support
Fast response
Calls answered in 2 rings, emails replied to within the hour.
Free expert advice
Clear guidance before you commit.
Cost-effective
Working in partnership with clients to ensure planning approval first time
Typical 10-day turnaround
Industry Leading Standard
Expert Team
We stay with you from first call through to submission.
Do you need an AIA in Surrey?
If your proposal cannot avoid tree influence, Surrey planners will expect a formal Arboricultural Impact Assessment to validate the application.
If you’re a homeowner, you may need an AIA when an extension, driveway or garage sits close to retained trees or their roots.
If you’re a developer, an AIA is typically required where layouts, access routes, drainage or foundation designs interact with existing trees shown on a BS 5837 tree survey.
In Surrey, Arboricultural Impact Assessments are often necessary where:
Green belt or village-edge development places buildings close to mature trees
Access routes and services cross retained woodland edges
Regeneration land includes established trees shaping design constraints
Residential plots introduce works within root protection areas
Planning scrutiny centres on whether tree retention aligns with proposed density and form.
Our Arboricultural Impact Assessments support projects in Guildford, Woking and the wider Surrey area, where layouts, access and retained trees interact.
Why Planning Authorities Require an AIA in Surrey
Surrey planning authorities request Arboricultural Impact Assessments where development proposals interact directly with retained trees. LPAs use AIAs to test whether layouts, access routes, drainage strategies and foundation designs respond realistically to canopy spread and root protection areas, in line with BS 5837 and the National Planning Policy Framework. Where impacts are unclear or poorly justified, applications are commonly delayed, conditioned or returned for redesign.
Local Case Insight
The Process - Arboricultural Impact Assessment
Our AIAs in Surrey 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 an AIA in Surrey
We resolve tree-related planning risk across Surrey through:
Defensible impact assessment aligned to BS 5837
Proportionate mitigation and construction guidance
Clear layout compatibility testing for planners
Integrated reporting with TPPs, drainage or ecology where required
Your application is strengthened with evidence that planners trust.
Step 1
Site & Design Review
Assessment of site layout alongside tree survey data.
Step 2
Impact Testing
Root protection areas, canopy spread, access routes and construction zones are fully assessed.
Step 3
Mitigation & Design Alignment
Protection, construction methods and layout refinements defined.
Step 4
Planning-ready Reporting
Integrated with Tree Protection Plans (TPPs), drainage design or ecological surveys.
Next Steps
Ready to confirm whether your Surrey project needs an AIA?
Send us your site details and we’ll give you a clear, proportionate route forward.
FAQ - AIA in Surrey
Why are Arboricultural Impact Assessments commonly required for development in Surrey?
In Surrey, AIAs are often required where development affects mature trees on large residential plots or settlement edges.
Surrey County Council – https://www.surreycc.gov.uk/
When will Surrey planning authorities request an Arboricultural Impact Assessment?
Surrey councils typically request an AIA where construction could impact root protection areas or canopy spread.
What types of development in Surrey trigger Arboricultural Impact Assessments?
Residential extensions, replacement dwellings, and redevelopment of large plots commonly require AIAs in Surrey.
How does an Arboricultural Impact Assessment support planning in Surrey?
An AIA demonstrates that tree retention has been integrated into layout and construction planning.
Can an Arboricultural Impact Assessment reduce objections in Surrey?
Yes. Early arboricultural input can resolve conflicts before determination.
Who should prepare an Arboricultural Impact Assessment in Surrey?
AIAs in Surrey should be prepared by experienced arboriculturists familiar with local planning expectations.
