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Trees in relation to planning and development

Planning and Development in Relation to BS5837

The Town and Country Planning Act (1990) places a duty on the Local Planning Authority to consider the impact of development proposals on existing trees within a site, whether subject to statutory protection or not. British Standard 5837 Trees in Relation to Design, Demolition and Construction - Recommendations 2012 provides current best practice advice.​ This standard requires that arboricultural advice is obtained at the very outset of any development and that advice and supervision is continued through to final completion.


Initial Feasibility Study

Prior to site purchase or offering a site for sale, CBA Trees consultants can provide an overview assessment of arboricultural constraints. This identifies the main arboricultural features and an indication as to their quality; areas of poor quality trees would also be shown. This information assists in identifying the full development potential of the site allowing clients to accurately assess its real value.

Pre Planning Information

CBA Trees will undertake an initial Tree Survey of the site, grading trees and other vegetation according to its condition and prospective longevity. Dangerous trees, or those with a very short life expectancy are normally recommended for removal, with the remaining trees graded as high, moderate or low quality.


Where necessary, in the early design stages of proposed site layouts, a Tree Constraints Report and Plan can be produced which identifies and overcomes areas of conflict between the proposed layout and trees on site.   Root Protection Areas (RPA) are calculated and included on the tree constraints plan, together with potential height and shade cast by relevant tree species, where these have a future potential to impact further on the site.   The developable area or development is clearly defined together with the initial tree protection measures. The main benefit of employing a Tree Constraints Report and Plan is that, if followed, it will greatly reduce potential conflicts between the layout and the planning system, significantly reducing the time spent on redesigning amendments.

Trees being protected by tree protection barriers
Trees being protected by tree protection barriers

Arboricultural Implications Assessment (AIA)

CBA Trees provides assessments of proposed layouts, evaluating the impact on existing tree strock and highlighting areas of conflict to be overcome at the design stage, and therefore minimising delay during the planning process. Where minor conflicts cannot be resolved specialist protection or engineering measures or build methods can be devised to overcome any biological impact on retained trees.  Click here for a sample AIA


Arboricultural Development and Method Statments (ADS and AMS)

The Arboricultural Development Statement (ADS) (also referred to as Arboricultural Method Statement or AMS) provides site specific, detailed advice on all tree protection requirements from site initiation through to final completion. It aims to support the Planning Application, to discharge Planning Conditions and provide a working document for site personnel. A detailed Tree Protection Plan within the ADS will illustrate everything that is required to ensure the safe and healthy retention of trees during the development process. The ADS/AMS also provides substantial support should an application progress to Appeal or Inquiry.

About Us


CBA Trees has many years experience in Arboriculture and Tree Services.

If you're looking for a professional solution to your tree problem then CBA Trees has the expert waiting for your instruction!



Contact Us


CBA Trees

Chesil House

Arrow Close

Boyatt Wood


SO50 4SY


Telephone: 023 8098 6229


ArbExcellence LTD trading as CBA Trees is a company registered in England and Wales with company number 08846713. Registered office: Chesil House, Arrow Close, Boyatt Wood, Hampshire, SO50 4SY  VAT Number: 127662913.


Telephone: 023 8098 6229 


Arboricultural Association



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