Heritage Impact Assessment

Heritage Impact Assessment is a structured process to make sure that you take the significance of your historic asset into account when you are developing and designing proposals for change.

As from 1 September 2017, a Heritage Impact Statement is required to support certain applications for listed building or conservation area consent in Wales and will replace the DAS in the application process for listed building consent.

A heritage impact statement for listed building consent must contain:

  • A description of the proposed works (“the works”), including design principles and concepts and a schedule of works;
  • an explanation of the objective that the works are intended to achieve and why they are desirable or necessary;
  • a statement that describes the special architectural or historic interest of the building to which the application relates and its significance with particular reference to the part of the building affected by the works;
  • an assessment of the impact of the works on the special architectural or historic interest of the building and its significance, including a description of any potential benefits or harm to that interest;
  • a summary of the options considered for the purpose of achieving the objective referred to in paragraph (2)(b) and the reasons why the proposals to which the application relates are preferred; and
  • a description of how any issues relating to access which arise in relation to the works have been dealt with, unless the application relates to works which affect the means of access to or within, any part of a listed building which is used as a private dwelling.

A heritage impact statement for conservation area consent must contain:

  • a description of the proposed works (“the demolition works”), including a schedule of works;
  • an explanation of the objective that the demolition works are intended to achieve and why demolition is desirable or necessary;
  • a description of the contribution any building which is proposed to be demolished makes to the character or appearance of the conservation area;
  • an assessment of the impact of the demolition works on the character or appearance of the conservation area, including a description of any potential benefits or harm to the character or appearance of the area;
  • a summary of the options considered for the purpose of achieving the objective referred to in paragraph (3)(b) and the reasons why demolition is preferred.

Guidance on preparing a Heritage Impact Statement can be found here Heritage Impact Assessment in Wales (PDF)

Further guidance is available from:

Planning (Listed Buildings and Conservation Areas) (Wales) (Amendment No. 2) Regulations 2017 (SI 2017/638).

Further advice on good design is contained in the Welsh Government Technical Advice Note (TAN) 12: Design (2016).

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