PLANNING & DEVELOPMENT 2026
If you are preparing a planning application and there are trees on or near your site, the requirement for a professional BS5837 survey is virtually certain.
In the Southeast wealth belt—where local planning authorities in Surrey, Sussex, and London maintain some of the strictest arboricultural standards in the UK—this document is far more than a box-ticking exercise. It is a technical necessity that allows planning officers to understand the complex biological interaction between your architectural vision and the existing tree stock, both above and below the soil line.
Whether you are pursuing a modest residential extension, a commercial property conversion, or a large-scale housing development, trees influence the viability of your application in ways that are rarely obvious to the untrained eye. Engaging an expert consultant for a BS5837 Survey early ensures these constraints become design opportunities rather than grounds for refusal.
The survey is conducted to ensure absolute compliance with British Standard 5837:2012—Trees in Relation to Design, Demolition, and Construction. This is an official record of all specimens within the influencing distance of your proposed works.
An experienced arboricultural consultant visits the site to record the main constraints for each tree, mapping out the physical and biological boundaries that will dictate the viability of your planning application.
These details are utilised to create a Tree Constraints Plan, which superimposes the tree information on your site design. This assists in determining which trees can be kept, which should be removed, and how best to design around them responsibly to ensure a smooth path through the planning process.
Local Planning Authorities (LPAs) across the Southeast are under a statutory duty to consider the impact of development on trees. This is not merely a preference; it is a legal framework designed to protect the character and biodiversity of our regional landscape.
Councils focus their scrutiny on specific high-value assets during the application process:
The survey must also account for trees that reside outside your immediate property line:
Even if your proposal is relatively small, the presence of trees can make a professional survey necessary. In our experience across the Southeast, the following scenarios almost always trigger a requirement for a BS5837 report:
New house extensions designed in close proximity to veteran trees or protected garden specimens.
Housing projects on previously undeveloped land or large garden plots with established canopy cover.
Barn or outbuilding conversions located within falling distance of woodland or ancient hedgerows.
School, care home, or commercial extensions where trees form part of the site’s essential character.
A standard query from developers is whether trees can be removed prior to submission to simplify the process. While removal of unprotected, poor-quality trees is permissible, extensive clearance triggers immediate red flags for Local Planning Authorities.
Crucially, Biodiversity Net Gain (BNG) legislation now requires a 10% increase in biodiversity. Tree removal has become significantly more problematic under these rules, as the natural capital lost must be mitigated with high-quality replanting. Professional advice is essential before any site clearance begins.
The Root Protection Area (RPA) is a specifically designed zone around each tree that must be protected from excavation, soil compaction, and general disturbance. While the general rule is to avoid these areas, technical innovation often allows for specialized construction within them.
Building within an RPA is possible when supported by a robust Arboricultural Method Statement and structural specialist design. We utilize several techniques to minimize the impact on the tree's biological viability:
These solutions require a high level of professional oversight and must be clearly explained within your planning applications to ensure council acceptance.
A professional BS5837 survey also considers the future dynamics of the site. It is not just about the current footprint; it is about the long-term interaction between the property and its environment.
Will the tree cast excessive shade over primary living rooms? Will the growth pattern impact the building's structural integrity in a decade? Would roots interfere with future utilities? Early engagement allows us to address these issues before they become expensive planning hurdles.
Early engagement with a tree consultant can address potential site conflicts before they become ingrained in your architectural plans. A professional BS5837 survey is the most efficient way to ensure a smooth planning process and a sustainable site design.
As members of the Arboricultural Association, Arbor Cultural Ltd provides the technical authority and genuine site care required to satisfy council tree officers across Surrey, Sussex, and London. We ensure your trees remain an asset to your property through expert planning and management.
