Planning application
Abercorn School 28 Abercorn Place NW8 9XP
Works: Extension Loft or dormer Windows or glazing Trees 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
Amendments to planning permission dated 8th May 2025 (RN 25/00945/FULL) for the Internal and external refurbishment to facilitate the reversion to and use for a single dwellinghouse, comprising: installation of a new dormer window to front elevation; installation of a dormer window to the west elevation at third floor; replacement of windows throughout; removal of non-original external fire escape staircase to rear facade and installation of a balcony to the rear facade a ground and first floor level and a new external staircase to access the garden from lower ground level; rationalising the rear facade (removal of exposed cabling, replacement of rainwater goods); installation of a lift within the original closet wing with lift overrun; removal of non-original partitions and openings, addition of new partitions, and infill of redundant openings throughout; creation of new opening within existing fabric at ground floor and replacement with doors; repairs, enhancements and redecoration throughout including to fireplaces and doors; removal of non-permeable hard surfaces in front and rear gardens and addition of new planting and terraces; pruning of the existing trees to the front of the property; and other relevant alterations. NAMELY, for the removal of condition 10.
As published by the council, reference 25/05133/NMA
Application record
- Reference
- 25/05133/NMA
- Type
- Non-material amendments
- Status
- Decided
- Decision
- Application Permitted
- Received
- 23 Jul 2025
- Validated
- 23 Jul 2025
- Decided
- 31 Jul 2025
- Ward
- Abbey Road
- Decision by
- Delegated Decision
- Postcode
- NW8 9XP
Site history
Applications at this address on the Westminster register
This site has had 7 applications since 2025: 7 approved, 0 refused.
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26/01000/TPO Granted
Abercorn School 28 Abercorn Place NW8 9XP
T1 Horse chestnut: pruning of single root approximately 65mm diameter at the boundary of the building.
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26/00028/ADFULL Granted
Abercorn School 28 Abercorn Place NW8 9XP
Details of sample of privacy glass pursuant to condition 3 of planning permission dated 8th May 2025 (RN: 25/00945/FULL).
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25/08524/ADFULL Granted
Abercorn School 28 Abercorn Place NW8 9XP
Details of hard and soft landscaping pursuant to condition 9 of planning permission dated 8th May 2025 (RN: 25/00945/FULL)
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25/06518/TCA Granted
Abercorn School 28 Abercorn Place NW8 9XP
1 x plum (T1, front): Reduce by up to 1.5 meters in height and 1.5 meters in radial spread to include thinning approximately 20% of internal epicormic growth and the removal of deadwood from the canopy.
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25/05655/ADFULL Granted
Abercorn School 28 Abercorn Place NW8 9XP
Details of a desktop study, details of a site investigation and details of a remediation strategy pursuant to condition 6 (phase 1, 2, 3) of planning permission dated 8th May 2025 (RN:25/00945/FULL)
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25/05366/ADFULL Granted
Abercorn School 28 Abercorn Place NW8 9XP
Details of a method statement explaining the measures you will take to protect the trees on and close to the site and details of an auditable system of arboricultural site monitoring, site supervision and record keeping pursuant to condition 7 and 8 (Part 1) of planning permission dated 8th May 2025 (RN:25/00945/FULL)
Timeline
Dates from the published record
-
23 Jul 2025
Received by Westminster
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31 Jul 2025
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, registered in Newbury
1,452 applications on PlanIndex · across 153 councils · 91% granted
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See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
8 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.
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Open the documentsWhat this grant of permission means
Westminster granted permission on 31 July 2025, 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 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
-
Abercorn School 28 Abercorn Place NW8 9XP
Details of a method statement explaining the measures you will take to protect the trees on and close to the site and details of an auditable system of arboricultural site monitoring, site supervision and record keeping pursuant to condition 7 and 8 (Part 1) of planning permission dated 8th May 2025 (RN:25/00945/FULL)
Granted Full applications Trees 12 docs -
Abercorn School 28 Abercorn Place NW8 9XP
Details of a desktop study, details of a site investigation and details of a remediation strategy pursuant to condition 6 (phase 1, 2, 3) of planning permission dated 8th May 2025 (RN:25/00945/FULL)
Granted Full applications 9 docs -
36 Abercorn Place NW8 9XP
87% historically approved · decision due ~28 Apr
Variation of Condition 1 of planning permission dated 11 September 2025 (RN: 25/02425/FULL) for 'Excavation of basement below existing house and part of front and rear garden land with lightwells to the front and rear; partial demolition of front facade; demolition of rear extension and roof; erection of part replacement front facade, new mansard roof level; replacement fenestration to the rear elevation; and landscaping works to front and rear gardens, including plant equipment to rear'. NAMELY, to render the rear elevation, amend rear fenestration and changes to detailed design of front elevation.
Awaiting decision Full applications Extension Loft or dormer +2 9 docs -
36 Abercorn Place NW8 9XP
Amendments to planning permission dated 11 September 2025 (RN: 25/02425/FULL) for Excavation of basement below existing house and part of front and rear garden land with lightwells to the front and rear; partial demolition of front facade; demolition of rear extension and roof; erection of part replacement front facade, new mansard roof level; replacement fenestration to the rear elevation; and landscaping works to front and rear gardens, including plant equipment to rear. Namely, to render the rear elevation to match the front facade, amend detailed design of the rear first floor windows, replace the approved rear windows at ground floor level with doors, reposition the rear first floor windows, adjust the rear bays and architectural alteratons to the front elevation.
Refused Amendments Extension Loft or dormer +2 17 docs -
Abercorn School 28 Abercorn Place NW8 9XP
T1 Horse chestnut: pruning of single root approximately 65mm diameter at the boundary of the building.
Granted Trees 8 docs -
16D Abercorn Place NW8 9XP
Detailed drawings of sample photographs or specifications courtyard ground covering and details new door and window pursuant to condition 4 and 5 of planning permission dated 17th October 2025 (RN 25/06246/FULL)
Granted Full applications Windows or glazing 9 docs
Other amendment applications
In Westminster
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26/05886/NMA Awaiting decision
10 Spring Gardens London SW1A 2BN
Amendments to planning permission dated 10th July 2025 (RN 25/00695/FULL) for the Use of part-ground, first, sixth, seventh and eighth floor levels as an Embassy (sui generis). Associated external alterations to the ground floor facade on Carlton House Terrace, and part ground floor to Piazza (Spring Gardens) frontage. External alterations to the doors. Installation of roof plant and security screens to the eighth floor. NAMELY, Addition of external attached building signage on West Elevation and South Elevation; Addition of two flagpoles on West Elevation; Addition of a parcel pass through, rather than fixed panel, to door on North Elevation; and omission of smoke vent and replacement with new paving to match existing paving.
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26/05881/NMA Awaiting decision
50A Warlock Road London W9 3LW
Amendments to planning permission dated 11 August 2026 (RN: 26/04158/FULL) for the: Erection of a single-storey rear extension at lower ground floor level; replacement of existing rear window with a door at ground floor level and creation of terrace with associated railings/screening; and associated external alterations. NAMELY, revise the height of the rear elevation kitchen French doors.
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26/05798/NMA Awaiting decision
3 Blenheim Road London NW8 0LU
Amendments to planning permission dated 18th January 2024 (RN:22/04886/FULL) for Excavation of single-storey basement extension with lightwells to front and rear gardens; Erection of single-storey extension to rear and three-storey extension to side; Formation of door to rear at lower ground floor level; Landscaping works; and associated external alterations. Namely, internal alterations and minor adjustment to rooflight position.
-
26/05670/NMA Awaiting decision
64 St James's Street London SW1A 1NF
Amendments to planning permission dated 2nd September 2021 (21/02158/FULL) for: Demolition of the existing mansard roof and removal of plant and escape stair; erection of new double mansard roof extension and rear extension for additional commercial floorspace (Use Class E); and installation of new escape stair, rear balconies, roof terrace and associated works namely, amendments to allow for the installation of a condenser unit within the rear lightwell.
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26/05674/NMA Awaiting decision
52 Eaton Place London SW1X 8AL
Amendments to planning permission dated 25 September 2025 (25/05108/FULL) for: Alterations to rear extension at first floor level including creation of rear roof terrace at second floor level; replacement of first and second floor level front windows with double glazed timber sash windows; replacement of front door; reinstatement of period windows and doors namely, to allow replacement of second floor rear full height sash window with set of french doors.