IMPORTANT: DCLG has updated its “Permitted Development for Householders – Technical Guidance” document (January 2013) …

[NOTE: For other updates to the "Technical Guidance" document, please view the following posts:
- This post for the January 2013 updates.
- This post and this post for the October 2013 updates.
- This post for the April 2014 updates.
- This post for the April 2016 updates.
- This post for the April 2017 updates.]

Introduction:

The Department for Communities and Local Government (DCLG) has updated its "Permitted Development for Householders - Technical Guidance" document. As such, the current and previous versions of the "Technical Guidance" document are now as follows:

  • January 2013: Permitted Development for Householders - Technical Guidance (pdf).
  • August 2010: Permitted Development for Householders - Technical Guidance (pdf).

The main differences between the current version (January 2013) and the previous version (August 2010) are as follows:

Solid wall insulation (page 13):

On page 13 of the "Technical Guidance" document, in the section relating to limitation A.1(d), the following new sentence has been inserted:

"The installation of solid wall insulation constitutes an improvement rather than an enlargement or extension to the dwellinghouse and is not caught by the provisions of d(i) and d(ii)."

As a result of the above amendment, the following conclusion has been added to "The enlarged part of the dwellinghouse" topic of the Part 1 of the GPDO - GENERAL Appeal Decisions document on this website:

  • The installation of solid wall insulation constitutes an improvement rather than an enlargement or extension to the dwellinghouse and is not caught by the provisions of d(i) and d(ii). [Note: In other words, solid wall insulation should not be assessed against those limitations and conditions of Class A that apply to the enlarged part of the dwellinghouse].
    [Source: Permitted development for householders - Technical guidance].
    [This advice is since January 2013].

Other (insignificant) amendments:

  • On pages 1-3 (front cover, title page, and copyright page), amendments have been made to the name of DCLG, its logo, website addresses, and the date of the document.
  • On page 5 ("Introduction"), amendments have been made to the layout of the text, and the following two new sentences have been inserted:
    - "It was updated in January 2013 to clarify the position on solid wall insulation (see page 13). A consultation on changes to the size limits for domestic extensions was carried out at the end of 2012. This guidance will be further updated in due course to reflect changes made as a result."

Additional notes:

  • Although DCLG updated the "Technical Guidance" document in January 2013, it does not appear to have announced this update on the Planning Portal website. Instead, references to this update were made by the Department of Energy and Climate Change.
  • All links on the Planning Jungle website to the "Technical Guidance" document have been updated to ensure that they link to the current version of the document (i.e. the "January 2013" version).

Comments by the Planning Jungle website:

  • Although the "Technical Guidance" document only states that the installation of solid wall insulation would not need to be assessed against A.1(d), in my opinion this also implies that such works would not need to be assessed against A.1(e), A.1(f), A.1(g), A.1(h), A.2(b), A.2(c), and A.3(c).
  • It remains the case that, for the majority of properties, the installation of solid wall insulation is still likely to be contrary to A.3(a), which requires that "the materials used in any exterior work (other than materials used in the construction of a conservatory) shall be of a similar appearance to those used in the construction of the exterior of the existing dwellinghouse".
  • It may also be the case that, for properties on article 1(5) land, the installation of solid wall installation is contrary to A.2(a), which prevents "the cladding of any part of the exterior of the dwellinghouse with stone, artificial stone, pebble dash, render, timber, plastic or tiles".
  • As such, in my opinion, if the government wants to encourage the installation of solid wall installation, then it would be more effective to amend the legislation rather than to amend the guidance.