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52 Crookhams Welwyn Garden City AL7 1PF

6/2026/1726/PN8Class A – enlargement, improvement or other alteration of a dwellinghouse - PRIOR APPROVALRefused
Prior approval

Refused on 12 November 2026

2 reasons for refusal

Approximate location: the centre of the postcode, not the exact property.

Proposal

Prior approval for a rear extension measuring 6m in depth, 2.5m to the eaves and the maximum height of 3m

Received
30 September 2026
Ward
Haldens
  1. Received30 Sep
  2. Validated1 Oct
  3. Consult.
  4. Target
  5. Decided12 Nov

Decided in 42 days (council typically 56)

About this application

This is a planning application for a rear extension at 52 Crookhams Welwyn Garden City AL7 1PF. Welwyn Hatfield has handled 7 applications of this type. This one was decided in 42 days, 2 weeks quicker than Welwyn Hatfield's typical decision time. There are no previous applications recorded at this address. In the past year there have been 24 applications across Haldens. We hold 714 applications in total for the AL7 postcode area.

88% of all applications at Welwyn Hatfield Borough Council were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Why it was refused

  1. The proposed works are NOT permitted development by virtue of Schedule 2, Part 1, Class A (the enlargement, improvement, or alterations to a house) of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended by virtue of the proposed extensions would form a side elevations of the original dwellinghouse and have a width greater than half the width of the original dwellinghouse exceeding the limits set out in sub- paragraph (j) and materials used would not be of a similar appearance to the existing dwellinghouse. Therefore, planning permission will be required for the proposed development.
  2. Plan Revision Details Received Date Number Number Location plan 30 September 2026 02 A Proposed Plans Elevations 30 September 2026 and Section A:A

From the council's decision notice.

Application details

Postcode
AL7 1PF
Application type
Class A – enlargement, improvement or other alteration of a dwellinghouse - PRIOR APPROVAL

Planning application dates

Date validated
1 October 2026

Applicant and agent

Applicant
Private applicant
Agent address
23 Tunfield Road Hoddesdon EN11 9LQ

Planning decision

Case officer
Mrs Kerrie Charles

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (22)

flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Planning history at this site

1 other application at this property, newest first.

  1. 2001
    12 Apr

    FRONT PORCH

    WithdrawnESTATE MANAGEMENTW6/2001/0485/EM

Source: Welwyn Hatfield

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