Skip to content

10 Ayot Green Ayot St Peter Welwyn AL6 9AB

6/2025/2288/HOUSEHOUSEHOLDER APPLICATIONRefused
Householder

Refused on 6 January 2026

Delegated (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

Erection of a single storey rear extension with roof-lights, re-laying of gable roofs, replacement casement windows to the rear and insertion of new roof light to existing rear extension

Received
28 October 2025
Decision level
Delegated (officer decision)
Ward
Welwyn West
  1. Received28 Oct
  2. Validated28 Oct
  3. Consult.2 Jan
  4. Target
  5. Decided6 Jan

Decided in 70 days (council typically 56)

About this application

This is a full planning application for a single storey rear extension at 10 Ayot Green Ayot St Peter Welwyn AL6 9AB. Welwyn Hatfield has handled 2,195 applications of this type. This one was decided in 70 days, 2 weeks longer than Welwyn Hatfield's typical decision time. The site is in the Ayot Green conservation area, with 6 listed buildings nearby. 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.

83% of full 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 development, by virtue of the unsympathetic gable roof form, would fail to respect the form and appearance of the original dwelling and would therefore fail to preserve or enhance the character and appearance of the Conservation Area or Listed Building, contrary to Policies SP9 and SADM15 of the Welwyn Hatfield Borough Council Local Plan, the Supplementary Design Guidance 2005, the Planning (Listed Building and Conservation Areas) Act 1990, and the National Planning Policy Framework.
  2. Plan Revision Details Received Date Number Number 20979- Plans and Elevations as 28 October 2025 S001-A Existing 20979- Plans and Elevations as 28 October 2025 P003-B Proposed 20979- Part Elevations as Existing 28 October 2025 P002-A and Proposed 1.

From the council's decision notice.

Application details

Postcode
AL6 9AB
Application type
HOUSEHOLDER APPLICATION
Parish
Ayot St. Peter

Planning application dates

Date validated
28 October 2025
Consultation expiry
2 January 2026
Consultation end
2 January 2026

Applicant and agent

Agent address
Westgate House 37-41 Castle Street Hertford SG14 1HH

Publicity

Advertisement expiry
2 January 2026
Site notice end
24 December 2025

Additional information

UPRN
100080988146

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Conservation area: Ayot Green
  • Listed building: Grade II: 14On this site · +3 more
  • Green belt: Welwyn Hatfield
  • 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 (19)

flood storage areas, 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

Track this application

Get email alerts when there is a planning decision or status change.

Get email alerts near AL6

New planning applications delivered to your inbox daily.

Around this site

Discuss this application on r/PlanningPermissionUK

For applicants and trades

Planning something similar?

See what the council approved and refused for single-storey rear extensions on your street. Pick your home and get the evidence before you pay for drawings.

See what gets approved on your streetBuying this property? Report on this address