91 Ashmill Street London NW1 6RA
Approved on 8 May 2026
Proposal
Amendments to planning permission dated 9th October 2024 (RN:24/04970/FULL) for Erection of rear extension to lower ground floor flat. Namely, correction to the roof plan layout to align with the approved site plan, including two rooflights and amendments to the green roof layout, with the inclusion of gravel for fire safety.
- Received
- 30 April 2026
- Council
- City of Westminster
- Ward
- Church Street
- Agent
- USL Architects
- ReceivedReceived30 Apr
- ValidatedValidated30 Apr
- Consult.Consultation
- TargetTarget Date28 May
- DecidedDecided8 May
Decided in 8 days (council typically 49)
About this application
This is an application to amend a permission at 91 Ashmill Street London NW1 6RA. Westminster has handled 604 applications of this type. This one was decided in 8 days, 6 weeks quicker than Westminster's typical decision time. The site is in 2 listed buildings nearby. There have been 2 other applications at this address. In the past year there have been 33 applications across Church Street. We hold 3,180 applications in total for the NW1 postcode area.
88% of amendment applications at City of Westminster were approved. Across all application types, the council typically decides in about 7 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
- NW1 6RA
- Application type
- Non-material amendments
- Scale / size
- Small
Planning application dates
- Date validated
- 30 April 2026
- Target decision date
- 28 May 2026
Applicant and agent
- Agent
- USL Architects
- Agent address
- Suite 3J, Argyle House Joel Street, Northwood Hills HA6 1NW
Planning decision
- Statutory period
- 28 days
Site constraints
Designations that overlap or adjoin the site outline.
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Brownfield land register: Tresco House Lisson Grove NW1Register site at or near this address
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (22)
flood storage areas, conservation areas, listed buildings, tree preservation orders, 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 and heritage coasts.
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.
Associated applications
- 202623 Jun
Variation of conditions 1, 5 of planning permission dated 8th October 2024 (RN 24/04970/FULL
ApprovedVariation of conditions (s73)26/04137/FULL - 202630 Apr
Amendments to planning permission dated 9th October 2024 (RN:24/04970/FULL
This applicationApprovedNon-material amendment26/02874/NMA - 202422 Jul
Rear extension on lower ground floor flat.
PendingFull Planning Permission ApplicationPart of24/04970/FULL
Planning history at this site
2 other applications at this property, newest first.
Source: Westminster
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Around this site
Nearby applications
- 91 Ashmill Street City Of Westminster London NW1 6RA25/00779/ADFULL · ConditionsApproved0.0 mi
- 91 Ashmill Street NW1 6RA24/02826/FULL · FullAwaiting decision0.0 mi
- 91 Ashmill Street NW1 6RA24/04970/FULL · FullAwaiting decision0.0 mi
- 96 Ashmill Street London NW1 6RA10/03360/FULL · FullRefused0.0 mi
- 100 - 101 Ashmill Street London NW1 6RA08/01452/LBC · HeritageApproved0.0 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman1.1 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing1.5 mi
- Orient Construction Consultancy LimitedVerifiedLondon4.4 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering6.0 mi
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