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219 Knella Road Welwyn Garden City AL7 3NS

6/2025/1695/PN8Class A – enlargement, improvement or other alteration of a dwellinghouse - PRIOR APPROVALApproved
Outline / PiP

Approved on 19 September 2025

Council decision: Prior Approval Not RequiredDelegated (officer decision)

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 3.30m in depth, 3.66m in height and 2.64m to the eaves

Received
7 August 2025
Decision level
Delegated (officer decision)
Ward
Howlands
  1. Received7 Aug
  2. Validated19 Aug
  3. Consult.10 Sep
  4. Target
  5. Decided19 Sep

Decided in 31 days (council typically 56)

About this application

This is an outline application for a single storey rear extension at 219 Knella Road Welwyn Garden City AL7 3NS. Welwyn Hatfield has handled 516 applications of this type. This one was decided in 43 days, 13 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 43 applications across Howlands. We hold 715 applications in total for the AL7 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

Application details

Postcode
AL7 3NS
Application type
Class A – enlargement, improvement or other alteration of a dwellinghouse - PRIOR APPROVAL

Planning application dates

Date validated
19 August 2025
Consultation expiry
10 September 2025
Consultation end
10 September 2025

Applicant and agent

Agent address
HED House 60a Bridge Road East Welwyn Garden City AL7 1JU

Additional information

UPRN
100080979030

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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