BS5837 Tree Survey
and Reports in London
Tree Survey and Reports
Following many of our tree surveys, some trees exhibit features that require further investigation and require advanced tree decay detection equipment. We are among the few tree consultancy companies in London equipped with advanced internal diagnostic technologies like the Resi Drill and PICUS 3 Tomograph.
Our comprehensive decay assessments, combined with years of arboricultural experience that is essential to accurately identifying and evaluate areas of internal decay or dysfunction within trees, allowing us to provide accurate and reliable results to safeguard the longevity and safety of your trees.
Have you been asked to submit a BS5837 tree report as part of your planning proposal?
This comprehensive survey assesses the impact of your proposal on existing trees and ensures that a development project complies with British Standard 5837:2012,
“Trees in Relation to Design, Demolition, and Construction – Recommendations.”
British Standard 5837 provides guidelines for the integration of trees into the planning, design, demolition, and construction processes. Its primary objective is to ensure that trees are appropriately considered and protected during development, minimising potential conflicts between trees and structures both above and below ground. The standard outlines the methodology for surveying trees, evaluating their quality and value, and formulating strategies for their retention or removal based on their condition and the proposed site layout.
Understand the planning process
The information set out below is to help you understand the planning process, specifically around when a BS5837 Tree Survey is required.
We have broken this down into simple bullet points to cut out the jargon and help you better understand.
Planning New Developments:
Any construction project on land that contains or is adjacent to trees necessitates a tree report to inform your local London planning department of the impact of trees on your proposed structure.
Undertaking Demolition:
Before demolishing existing structures, especially in areas with mature trees, a survey ensures that tree roots and canopies are not adversely affected.
Designing Site Layouts:
Incorporating existing trees into site designs can enhance aesthetics and environmental value; a tree survey will also provide critical data for such integration to allow your planning application to comply with biodiversity net gain.
Complying with Legal Requirements:
Local planning authorities in London often mandate a BS5837 survey to ensure compliance with tree preservation orders and conservation area regulations.
What is involved in a BS5837 survey?
Tree Schedule:
A comprehensive table listing each tree's unique reference number, species (both common and botanical names), dimensions (height, stem diameter, crown spread), age classification (e.g., young, semi-mature, mature), physiological and structural condition, estimated remaining lifespan, and preliminary management recommendations.
Tree Constraints
Plan (TCP):
This plan illustrates the constraints imposed by existing trees, including root protection areas (RPAs), canopy spreads, and considerations for future growth, aiding in the design of the development layout to accommodate tree preservation.
Arboricultural Impact
Assessment (AIA):
An evaluation of the potential effects of the proposed development on the existing trees, identifying which trees can be retained, which require removal, and any necessary mitigation measures.
Arboricultural Method
Statement (AMS):
A detailed methodology outlining how retained trees will be protected during the construction process, including specifications for protective fencing, ground protection, and any special construction techniques required within RPAs.
Tree Protection Plan (TPP): A visual representation detailing the location of protective measures to be installed on-site to safeguard trees throughout the development process.
“Don’t worry, we will take every element of this on for you and set out clear instructions for contractors to follow”
The Survey Process
Conducting a BS5837 tree survey involves several steps:
Pre-Survey Preparation: Gathering existing site information, including topographical surveys and planning proposals, to understand the context and scope of the development; you can add this information within the online enquiry form.
On-Site Data Collection: One of our tree consultants will visit the site to assess each tree, record data on species, size, condition, and accurate geo reference location using tools such as GPS devices, laser rangefinders and, if necessary, drones for inaccessible areas.
Data Analysis and Categorisation: As per BS5837 trees are categorised based on their quality and value, considering factors like health, structural integrity, and contribution to the landscape.
The standard categorisation is as follows:
Category A:
High-quality trees with a significant remaining lifespan; should be retained if possible.
Category B:
Moderate-quality trees with a reasonable lifespan; retention is desirable.
Category C:
Low-quality trees with limited lifespan or value; retention is optional.
Category U:
Trees in such poor condition that they cannot realistically be retained; recommended for removal.
Report Compilation: The collected data is compiled into a comprehensive report, including all necessary plans and assessments, to inform the planning application and guide the development process.
F&Qs around BS5837 surveys
Why Is a BS5837 Survey necessary?
A BS5837 survey is a specialist tree assessment carried out according to British Standard BS5837:2012, designed to evaluate the impact of development projects on trees. This type of survey identifies important tree features and ensures they are preserved during planning and construction.
The survey assesses tree health, categorises their value, and outlines measures to protect their roots and canopy. It plays a crucial role in balancing development goals with environmental responsibility, ensuring compliance with local planning regulations and safeguarding trees that contribute to biodiversity.
Do I Need a BS5837 Survey for my project?
A BS5837 tree survey is required for projects that could affect trees, such as new builds, property extensions or garden structures near trees. For example London planning authorities often request this specific survey to identify and manage any tree-related concerns before granting approval.
If your project involves:
- Land with mature or protected trees, protected by a tree preservation order or conservation area,
- Construction near boundary hedgerows or woodlands,
- Redevelopment on sites with green infrastructure, a BS5837 survey will likely be a mandatory step to ensure your plans are environmentally sound and meet legal requirements.
What Happens During a BS5837 Survey?
During a BS5837 survey, one of our tree consultants inspects the trees within the development site.
The process involves:
- Tree Inspection: Recording details such as tree species, height, age, structural condition, and canopy spread. Accurate identification informs decisions about prioritising trees for preservation or removal allowing for local planning departments to make informed decision on your planning proposal.
- Categorisation: Assigning trees a retention category (A, B, C, or U), which determines their significance and suitability for retention on the development that allows local London planning departments to evaluate how well a proposed development balances environmental concerns with construction needs.
Categorising trees early in the planning process reduces delays by addressing potential tree-related conflicts upfront. It prevents the need for redesigns or legal challenges related to tree preservation. - Mapping: Creating a Tree Constraints Plan (TCP) to highlight important features like Root Protection Areas (RPAs) and canopy coverage.
The Tree Constraints Plan (TCP) maps the canopy spread of each tree, showing how much space the branches occupy above ground. This information helps prevent damage to overhanging branches during the construction phase. And Inform design decisions to avoid conflicts between trees and buildings, such as shading, leaf fall, or future growth concerns.
Understanding canopy coverage ensures that trees coexist harmoniously with the new development.
The Root Protection Area (RPA) is the area around a tree that must be safeguarded to protect its root system. Roots are essential for a tree’s stability and health, any damage to the RPA can result in tree stress or even death. Noting appropriate protective measures, like fencing all form part of your tree report. - Recommendations: Suggesting appropriate actions, such as protecting key trees, pruning, or removal if necessary.
The information is compiled into a detailed report that should be submitted to support your planning application.
How Does a BS5837 Survey Help with Planning Applications?
A BS5837 report demonstrates your commitment to responsible development and compliance with environmental laws. Planning authorities review these reports to ensure trees on-site are considered and protected where necessary.
The survey helps:
- Avoid delays to your proposal by addressing tree-related concerns early.
- Prevent the risk of legal disputes related to tree preservation.
- Show that your project respects local biodiversity and landscape value.
A well-prepared BS5837 report can streamline the approval process, making your application more likely to succeed and limit delays.
What Is the Cost of a BS5837 Survey?
The cost of a BS5837 tree survey can vary depending on factors like the number of trees involved, the size of the development site, and the complexity of the project. Typically, prices start at around £500.00 for smaller sites and increase for larger or more intricate developments.
While this may seem like an added expense, it can save money in the long term by preventing costly planning delays or enforcement issues. Always work with a qualified arboricultural consultant to ensure accurate tree surveys and reports.
Selecting a Qualified Arboricultural Consultant
Engaging a London based, qualified and experienced arboricultural tree consultant is vital for the accuracy and reliability of a BS5837 tree survey. Professionals should possess:
- Relevant Qualifications: Such as a higher qualification in arboriculture or related fields.
- Professional Memberships: Affiliations with recognised bodies like the Arboricultural Association.
- Experience: A proven track record of conducting and submitting BS5837 surveys, particularly within urban settings like London where trees are at conflict with our urban infrastructure.
- Knowledge of Local Regulations: Familiarity with the specific requirements and expectations of London’s various boroughs and planning authorities.
