Planning application
4A Abercorn Place NW8 9XR
Works: Extension Loft or dormer Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Exterior alterations to existing building, including introduction of new pergola to rear elevation, extension of existing ground floor plant/storage room, modifications to existing windows and doors, new traditional roof lantern rooflight, and changes to existing boundary wall.
As published by the council, reference 25/06416/FULL
Application record
- Reference
- 25/06416/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Application Permitted
- Received
- 8 Sep 2025
- Validated
- 3 Oct 2025
- Decided
- 13 Feb 2026
- Ward
- Abbey Road
- Decision by
- Complex Delegated Decision
- Postcode
- NW8 9XR
Site history
Applications at this address on the Westminster register
This site has had 4 applications since 2025: 1 approved, 0 refused.
-
26/05856/FULL Awaiting decision
4A Abercorn Place NW8 9XR
Addition of new rear balcony at first floor level and the replacement of an existing rear window with a traditional timber framed glazed door to provide access to the balcony.
-
26/03542/FULL Awaiting decision
4A Abercorn Place NW8 9XR
Installation of air conditioning unit within front lightwell. Installation of air conditioning unit within an acoustic enclosure within rear garden.
-
26/02764/NMA Awaiting decision
4A Abercorn Place NW8 9XR
Amendments to planning permission dated 13th February 2026 (RN:25/06416/FULL) for Exterior alterations to existing building, including introduction of new pergola to rear elevation, extension of existing ground floor plant/storage room, modifications to existing windows and doors, new traditional roof lantern rooflight, and changes to existing boundary wall. Namely, a section of the existing masonry boundary wall is to be increased in height to improve privacy and security, and to screen the bin storage area and replace the existing triple sash window with a new timber-framed door and adjacent side window, designed to match the existing widnow.
Timeline
Dates from the published record
-
8 Sep 2025
Received by Westminster
-
3 Oct 2025
Validated
Checked as complete and ready for consideration.
-
13 Feb 2026
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Hugh Cullum Architects Ltd Agent, an architecture practice registered in Cheltenham
Active · incorporated 2000 · Cheltenham
10 applications on PlanIndex · across 3 councils
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
17 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Westminster granted permission on 13 February 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
4A Abercorn Place NW8 9XR
87% historically approved · decision due ~31 Jul
Installation of air conditioning unit within front lightwell. Installation of air conditioning unit within an acoustic enclosure within rear garden.
Awaiting decision Full applications 12 docs -
4A Abercorn Place NW8 9XR
93% historically approved · decision due ~19 Jun
Amendments to planning permission dated 13th February 2026 (RN:25/06416/FULL) for Exterior alterations to existing building, including introduction of new pergola to rear elevation, extension of existing ground floor plant/storage room, modifications to existing windows and doors, new traditional roof lantern rooflight, and changes to existing boundary wall. Namely, a section of the existing masonry boundary wall is to be increased in height to improve privacy and security, and to screen the bin storage area and replace the existing triple sash window with a new timber-framed door and adjacent side window, designed to match the existing widnow.
Awaiting decision Amendments Extension Loft or dormer +1 10 docsSmall domestic -
4A Abercorn Place NW8 9XR
87% historically approved · decision due ~21 Oct
Addition of new rear balcony at first floor level and the replacement of an existing rear window with a traditional timber framed glazed door to provide access to the balcony.
Awaiting decision Full applications Windows or glazing -
Flat 3 5A Nugent Terrace London NW8 9QB
Siting of potted artificial planters on two sides of the flat roof at third floor level .
Granted Full applications 22 docs -
6 Abercorn Place NW8 9XP
90% historically approved · decision due ~24 Apr
Replacement of existing lead flat roof covering above single-storey side extension, including improved insulation within the roof build-up. (like-for-like)
Awaiting decision Heritage and listed buildings Extension Roofing 13 docsSmall domestic -
First Floor Flat 2 Nugent Terrace London NW8 9QB
87% historically approved · decision due ~26 May
Amalgamation of two existing flats into a single dwelling; erection of first-floor extension with balcony and stairs down to new rear terrace and associated new railings; installation of air source heat pumps to rear flat roof; replacement of windows and doors; installation of solar panels to roof; installation of rooflights.
Awaiting decision Full applications New dwelling Extension +3 42 docsDomestic
Other full applications
In Westminster
-
26/06295/FULL Awaiting decision
15 Warwick Way London SW1V 1QT
Installation of a new shopfront.
-
26/06297/FULL Awaiting decision
15 Warwick Way London SW1V 1QT
Alterations to rear elevation at basement level.
-
26/03576/FULL Decided
15A Devonshire Terrace London W2 3DW
Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)
-
26/06202/FULL Awaiting decision
106 Blandford Street London W1U 8AG
Installation of two roof-mounted anchor posts. (Linked to 26/06203/LBC)
-
26/04986/FULL Decided
Inver Court Inverness Terrace London W2 6JB
Replacement of combustible materials in the render facades; timber decking and plastic soffits/ fascias to terraces with non-combustible materials on the 5th and 6th floors.