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Trees in close proximity to  house

Planning Reports in Relation to Trees (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.

Pre Planning Information

CBA Trees will undertake an initial Tree Survey of the site, grading trees and other vegetation according to their 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.

House extension
Tree with tree protection barrier

Arboricultural Implication Assessment (AIA)

The Arboricultural Implication Assessment evaluates the impact a proposed development will have on the existing tree stock. The AIA identifies which trees will be lost to the development, which trees can be retained and protected and those which may require specialist protection or build methods. In some instances, where conflict arises, modifications to the design layout may be suggested along with a mitigation plan.  CBA Trees will always seek to identify and overcome potential problems to ensure that the planning application process runs smoothly and efficiently.


Arboricultural Development and Method Statements (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

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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