Planning appeal decision
Land Situated at and Known As 21 Oaklands Avenue, Brookmans Park, Hatfield, AL9 7UH
Planning appeal 3285021 at Land Situated at and Known As 21 Oaklands Avenue, Brookmans Park, Hatfield, AL9 7UH (Welwyn Hatfield Council) was decided (quashed on legal grounds) on 22 December 2022 by Inspector Jones R, by written representations. The main issue, as the Inspector framed it: Whether the erection of the dormer roof extension constitutes a breach of planning control, specifically whether it falls within permitted development under Schedule 2, Part 1, Class B of the GPDO.
the erection of dormer roof extension, without planning permission
- Authority
- Welwyn Hatfield Council
- Appeal type
- enforcement · Enforcement Notice
- Procedure
- Written Representations
- Development
- residential · Householder developments
- Inspector
- Jones R
- Postcode
- AL9 7UH
Main issues, as the Inspector framed them
- Whether the erection of the dormer roof extension constitutes a breach of planning control, specifically whether it falls within permitted development under Schedule 2, Part 1, Class B of the GPDO
What decided it
The net increase in cubic content of 48.41 cubic metres falls within the 50 cubic metre limitation of Class B permitted development, and the Council provided no evidence to challenge this calculation.
The decision letter
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With an account
What an account adds to this decision


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The authority’s record since 2016 · every decision in 2022
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- Quashed On Legal Grounds22 January 20243326649Land South of Darby Drive, Spinney Lane, Welwyn, Hertfordshire, AL6 9TB
The main issues, what decided it, the planning balance and the policies and judgments listed as cited are read from the published letter by Town Planner Pro and are our summary, not the Inspector’s words; the letter itself is the record. Contains public sector information licensed under the Open Government Licence v3.0. Research, not advice.
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