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
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
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.
As published by the council, reference 26/02764/NMA
Application record
- Reference
- 26/02764/NMA
- Type
- Non-material amendments
- Status
- Pending
- Received
- 24 Apr 2026
- Validated
- 24 Apr 2026
- Ward
- Abbey Road
- 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.
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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.
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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.
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25/06416/FULL Granted
4A Abercorn Place NW8 9XR
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.
Timeline
Dates from the published record
-
24 Apr 2026
Received by Westminster
-
21 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 19 June 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 65 days over the applications it decided in the last year.
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
10 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 happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided amendment applications in a median of 54 days. More in our guide to how long planning decisions take.
About amendment applications
An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
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 -
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
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.
Granted Full applications Extension Loft or dormer +1 17 docsSmall domestic -
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 amendment applications
In Westminster
-
26/06251/NMA Awaiting decision
19 Cumberland Street London SW1V 4LS
Amendments to planning permission dated 20th March 2026 (RN:25/08960/FULL) for Lower ground floor rear infill extension with terrace above, replacement of rear first floor conservatory, new roof level rear single dormer with access to third floor roof terrace, alterations to windows and external refurbishment, namely the change of conservatory gable roof to a flat GRP roof.
-
26/06201/NMA Awaiting decision
Almack House 28 King Street St James's London SW1Y 6QW
Amendments to planning permission dated 16th April 2026 (RN:26/01487/FULL) for Installation of a mechanical plant at lower ground floor and installation of two grilles to two lower ground floor windows, namely change to approved grille.
-
26/06212/NMA Awaiting decision
10 - 11 Lancaster Gate London W2 3LH
Amendment to Condition 12 (Whole Life Carbon) of planning permission dated 19th April 2024 (RN 23/04044/FULL) for Change of use from hotel to residential use (Class C3) with associated internal alterations to create 11 new units and external alterations comprising reconfiguration and recladding of the rear extension and restoration of the existing building. Namely to include additional requirement to evidence and justify where benchmarks cannot be achieved, consider mitigation measures and if none, evidence that all mitigation measures have been exhausted. (Linked with RN 26/06213/ADFULL)
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26/06211/NMA Awaiting decision
15 Portland Place London W1B 1PT
Amendments to planning permission dated 21th July 2022 (RN:22/03521/FULL) for Variation of condition 5 of planning permission dated 11th April 2018 (17/10815/FULL) for the Use of the building for a temporary period of 20 years as a medical use (Use Class D1) personal to OM Tower LLP. Namely, to amend condition 3.
-
26/06199/NMA Awaiting decision
33 - 35 Praed Street London W2 1NR
Amendments to planning permission dated 24th Septmebr 2024 (RN:24/03287/FULL) for Use of lower ground and ground floors as supermarket with ancillary bakery (Class E); Use of first, second and third floors as aparthotel with 19 bedrooms (Class C1); Installation of plant machinery and solar thermal panels at roof level, Replacement of windows; and associated external alterations. Namely, Introduction of two shawarma grill machines in the supermarket area at ground floor level; the introduction of a new canopy to provide ventilation for the two shawarma grill machines; and amendments to the ventilation design for the lower ground floor bakery canopy extract.