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Planning application

Abercorn School 28 Abercorn Place NW8 9XP

Granted Westminster 25/05655/ADFULL Approval of Details (Full PP)

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

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)

As published by the council, reference 25/05655/ADFULL

Application record

Reference
25/05655/ADFULL
Type
Approval of Details (Full PP)
Status
Decided
Decision
Application Permitted
Received
12 Aug 2025
Validated
12 Aug 2025
Decided
19 Sep 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.

  • 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.

    Decided 25 Feb 2026 Trees
  • 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).

    Decided 25 Feb 2026 Full applications
  • 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)

    Decided 3 Jun 2026 Full applications
  • 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.

    Decided 13 Oct 2025 Trees
  • 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)

    Decided 13 Oct 2025 Full applications
  • 25/05133/NMA Granted

    Abercorn School 28 Abercorn Place NW8 9XP

    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.

    Decided 31 Jul 2025 Amendments

Timeline

Dates from the published record

  1. 12 Aug 2025

    Received by Westminster

  2. 19 Sep 2025

    Decision issued: Application Permitted

  3. 21 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Marek Wojciechowski Architects Agent, an architecture practice registered in London

Active · incorporated 2012 · London

20 applications on PlanIndex · 88% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

Plans, drawings, consultee responses and the officer's report

9 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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What this grant of permission means

Westminster granted permission on 19 September 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 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

  • Abercorn School 28 Abercorn Place NW8 9XP

    25/05366/ADFULL Submitted 31 Jul 2025 0m away

    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
  • 36 Abercorn Place NW8 9XP

    26/01362/FULL Submitted 3 Mar 2026 0m away

    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

    25/08855/NMA Submitted 5 Dec 2025 0m away

    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

    26/01000/TPO Submitted 17 Feb 2026 0m away

    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

    26/01238/ADFULL Submitted 26 Feb 2026 0m away

    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
  • 16D Abercorn Place NW8 9XP

    26/01211/ADLBC Submitted 25 Feb 2026 0m away

    Details of courtyard ground covering / new door and window pursuant to conditions 4 and 5 of listed building consent dated 10 October 2025 (RN: 25/05451/LBC) [Linked to 26/01238/ADFULL]

    Granted Conditions Windows or glazing 9 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront.

    15 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.

    15 Sep 2026 Full applications
  • 26/06234/FULL Awaiting decision

    40 Grosvenor Place London SW1X 7HJ

    Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))

    11 Sep 2026 Full applications
  • 26/06249/FULL Awaiting decision

    53 Wimpole Street London W1G 8YH

    Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)

    11 Sep 2026 Full applications
  • 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)

    1 Jun 2026 Full applications