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Planning application

21 Stafford Place London SW1E 6NP

Granted Westminster 25/08897/FULL Full Planning Permission Application

Works: Extension Loft or dormer

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

Proposal

Erection of mansard roof extension.

As published by the council, reference 25/08897/FULL

Application record

Reference
25/08897/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
8 Dec 2025
Validated
8 Dec 2025
Decided
17 Apr 2026
Ward
St James's
Decision by
Complex Delegated Decision
Postcode
SW1E 6NP

Site history

Applications at this address on the Westminster register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • 26/06268/FULL Awaiting decision

    21 Stafford Place London SW1E 6NP

    Variation of Condition 1 of planning permission dated 17 April 2026 (RN 25/08897/FULL) for: Erection of mansard roof extension namely, to allow the insertion of 7 additional rooflights within the flat roof.

    Submitted 14 Sep 2026 Full applications

Timeline

Dates from the published record

  1. 8 Dec 2025

    Received by Westminster

  2. 17 Apr 2026

    Decision issued: Application Permitted

  3. 20 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/06268/FULL Awaiting decision

    21 Stafford Place London SW1E 6NP

    Variation of Condition 1 of planning permission dated 17 April 2026 (RN 25/08897/FULL) for: Erection of mansard roof extension namely, to allow the insertion of 7 additional rooflights within the flat roof.

    Submitted 14 Sep 2026 Full applications

Who's behind it

Company information only, from the register and Companies House

HK HOME ARCHITECTS AND CONSULTANTS LTD Agent, an architecture practice registered in Borehamwood

Active · incorporated 2021 · Borehamwood

22 applications on PlanIndex · across 7 councils · 92% 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

33 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 documents

What this grant of permission means

Westminster granted permission on 17 April 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 0.3 miles

  • 21 Stafford Place London SW1E 6NP

    26/06268/FULL Submitted 14 Sep 2026 50 yards away

    87% historically approved · decision due ~9 Nov

    Variation of Condition 1 of planning permission dated 17 April 2026 (RN 25/08897/FULL) for: Erection of mansard roof extension namely, to allow the insertion of 7 additional rooflights within the flat roof.

    Awaiting decision Full applications Extension Loft or dormer

  • 3 Buckingham Mews London SW1E 6NR

    26/00159/CLOPUD Submitted 13 Jan 2026 50 yards away

    Installation of solar panels to existing loft roof.

    Withdrawn Lawful development 12 docs

  • 5 Buckingham Mews London SW1E 6NR

    26/02964/FULL Submitted 6 May 2026 50 yards away

    87% historically approved · decision due ~7 Jul

    Erection of mansard roof extension, external alterations, replacement windows, and conversion of garage to study room.

    Awaiting decision Full applications Extension Loft or dormer +1 17 docs

  • 3 Buckingham Mews London SW1E 6NR

    26/02298/PASPV Submitted 7 Apr 2026 50 yards away

    89% historically approved · decision due ~2 Jun

    Installation of solar panels to existing loft roof.

    Awaiting decision 15 docs

  • 4 Buckingham Mews London SW1E 6NR

    26/05833/FULL Submitted 25 Aug 2026 50 yards away

    87% historically approved · decision due ~30 Oct

    Erection of a mansard roof extension.

    Awaiting decision Full applications Extension Loft or dormer 16 docs

  • 1 Palace Street And 1 - 3 Buckingham Gate London SW1E 6JP

    25/05074/ADLBC Submitted 22 Jul 2025 50 yards away

    Detail of a written, drawn and photographic report following removal of the paint and areas of detached stucco, and any subsequent further investigation of the condition of the remaining render and underlying substrate; including a) a detailed elevation showing (i) the areas of loose or evidently failing render which have been removed in Phase 1; (ii) the areas of render requiring further intrusive restoration, particularly replacement; and (iii) the areas of render in sound condition and/or requiring only like-for-like in-situ repairs; b) a detailed Condition Report, analysing and recording what has been found, and providing the justification for the works; and c). a detailed Conservation Method Statement for the removal of the existing render, the temporary protection of those sections of render and mouldings to be retained, and for the re-rendering, restoration works and re-painting works pursuant to Condition 3 (a, b and c) of listed building consent dated 13 October 2023 (RN: 23/05763/LBC).

    Granted Conditions 33 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront with Medication Dispensing Outlet.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06297/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

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

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06294/FULL Awaiting decision

    15 Eaton Mews South London SW1W 9HP

    Installation of railings and sliding lantern light at main roof level in connection with the use of the roof as a terrace.

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06317/FULL Awaiting decision

    124 Hamilton Terrace London NW8 9UT

    Replacement of existing first-floor sash windows to the front and rear elevations with traditionally detailed painted timber, slim-profile double-glazed sash windows. (Linked to 26/06318/LBC)

    Received 15 Sep, published by the council 22 Sep 2026 Full applications
  • 26/06273/FULL Awaiting decision

    9A Grosvenor Square London W1K 5AE

    Installation of natural Portland Stone paving to two front entrances. (Linked to 26/05473/LBC)

    Received 14 Sep, published by the council 22 Sep 2026 Full applications