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17 Wilshere Road Welwyn AL6 9PU

6/2025/1989/PN8Class A – enlargement, improvement or other alteration of a dwellinghouse - PRIOR APPROVALRefused
Outline / PiP

Refused on 29 October 2025

Council decision: Prior Approval Required and RefusedDelegated (officer decision)2 reasons for refusal

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Prior approval for the erection of a single storey rear extension measuring 4m in depth, 3.22m in height and 3m to the eaves

Received
15 September 2025
Decision level
Delegated (officer decision)
Ward
Welwyn West
  1. Received15 Sep
  2. Validated18 Sep
  3. Consult.14 Oct
  4. Target
  5. Decided29 Oct

Decided in 41 days (council typically 56)

About this application

This is an outline application for a single storey rear extension at 17 Wilshere Road Welwyn AL6 9PU. Welwyn Hatfield has handled 516 applications of this type. This one was decided in 44 days, 12 days quicker than Welwyn Hatfield's typical decision time. There are no previous applications recorded at this address. In the past year there have been 102 applications across Welwyn West. We hold 969 applications in total for the AL6 postcode area.

73% of outline 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 proposal would fail to be permitted development by virtue of Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) because the application involves the formation of a raised platform. As such, Prior Approval is required and this application is refused.
  2. Plan Number Revision Number Details Received Date 5543_PL_02 Existing & Proposed 15 September 2025 5543_PL_03 Existing & Proposed 15 September 2025 5543_PL_04 Existing & Proposed 15 September 2025 Site Location Plan 15 September 2025 5543_PL_01 Existing & Proposed 15 September 2025 5543_PL_05 Existing & Proposed 17 September 2025 Zayd Al-Jawad Executive Director (Place) Town and Country Planning Act 1990

From the council's decision notice.

Application details

Postcode
AL6 9PU
Application type
Class A – enlargement, improvement or other alteration of a dwellinghouse - PRIOR APPROVAL
Parish
Welwyn

Planning application dates

Date validated
18 September 2025
Consultation expiry
14 October 2025
Consultation end
14 October 2025

Applicant and agent

Agent address
First Floor The Priory High Street Redbourn AL3 7LZ

Additional information

UPRN
100080990905

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • 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.

Source: Welwyn Hatfield

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