Second Floor Flat 141 Portnall Road London W9 3BN
Refused on 20 August 2026
Proposal
Erection of rear dormer roof extension and formation of third floor roof terrace to second floor flat, including installation of rooflights and associated external alterations.
- Received
- 25 June 2026
- Council
- City of Westminster
- Ward
- Queen's Park
- ReceivedReceived25 Jun
- ValidatedValidated25 Jun
- Consult.Consultation
- TargetTarget Date20 Aug
- DecidedDecided20 Aug
Decided in 56 days (council typically 49)
About this application
This is a full planning application for a dormer extension at Second Floor Flat 141 Portnall Road London W9 3BN. Westminster has handled 4,484 applications of this type. This one was decided in 56 days, 7 days longer than Westminster's typical decision time. There has been 1 other application at this address. In the past year there have been 71 applications across Queen's Park. We hold 1,428 applications in total for the W9 postcode area.
86% of full 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
- W9 3BN
- Application type
- Full Planning Permission Application
- Scale / size
- Small
Planning application dates
- Date validated
- 25 June 2026
- Target decision date
- 20 August 2026
Applicant and agent
- Agent
- Firstplan
- Agent address
- Broadwall House 21 Broadwall London SE1 9PL United Kingdom
Planning decision
- Statutory period
- 56 days
Site constraints
Designations that overlap or adjoin the site outline.
- Article 4 direction: Article 4 Basement Development Permitted Rights Removed
- Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)
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, 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
2 other applications at this property, newest first.
- 20261 Oct
Erection of a rear dormer roof extension and the installation of three rooflights to front roof slope.
PendingAll Other26/06726/FULL - 202630 Mar
Erection of rear dormer roof extension and formation of third floor roof terrace to second floor flat…
RefusedFull Planning Permission Application26/02106/FULL
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
- Second Floor Flat 141 Portnall Road London W9 3BN26/02106/FULL · FullRefused0.0 mi
- 139 Portnall Road London W9 3BN08/06789/FULL · FullRefused0.0 mi
- 139 Portnall Road London W9 3BN09/03136/FULL · FullApproved0.0 mi
- 135 Portnall Road London W9 3BN25/04743/FULL · FullApproved0.0 mi
- 135 Portnall Road London W9 3BN25/04742/FULL · FullRefused0.0 mi
For applicants and trades
Consultants on this application
- Firstplan · Agent for this application
Contractors near this project
Find contractors for extensions near this site- Atlas South Technical Service LimitedVerifiedLondonProperty MaintenanceHandyman2.7 mi
- Avent Roofing ServicesVerifiedWestminsterRoofing3.1 mi
- Orient Construction Consultancy LimitedVerifiedLondon5.8 mi
- Nova Coat & PlasterVerifiedStreatham, LondonRenovations & RefurbishmentsPlastering7.0 mi
Planning something similar?
See what the council approved and refused for loft conversions and dormers on your street. Pick your home and get the evidence before you pay for drawings.