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Planning application

79 Eaton Terrace London SW1W 8TN

Granted Westminster 25/05689/FULL Full Planning Permission Application

Works: Extension Windows or glazing

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

Proposal

Erection of lower ground floor and ground floor rear extensions. Installation of air conditioning plant within two acoustic enclosures in rear garden and associated landscaping works. Alterations to windows on the rear elevation. Replacement of staircase and railings to front lightwell, alterations to front vaults and installation of a rainwater downpipe to the front elevation.

As published by the council, reference 25/05689/FULL

Application record

Reference
25/05689/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
13 Aug 2025
Validated
11 Sep 2025
Decided
26 Mar 2026
Ward
Knightsbridge & Belgravia
Decision by
Delegated Decision
Postcode
SW1W 8TN

Site history

Applications at this address on the Westminster register

This site has had 7 applications since 2025: 2 approved, 3 refused.

  • 26/03771/ADLBC Awaiting decision

    79 Eaton Terrace London SW1W 8TN

    Detailed drawings of a) new windows and doors to the rear lower ground and ground floor extensions; b) new rear dormer windows; c) new staircase; d) new cornicing and skirting; and e) internal doors pursuant to Condition 6 of listed building consent dated 23 March 2026 (RN: 25/05690/LBC) [Linked to 26/03720/ADFULL]

    Submitted 8 Jun 2026 Conditions
  • 26/03720/ADFULL Decided

    79 Eaton Terrace London SW1W 8TN

    Details of sample panel of brickwork; detailed drawings of new windows and doors to the rear lower ground and ground floor extensions; and detailed drawings of a hard and soft landscaping scheme pursuant to Conditions 4, 7(a) and 15 of planning permission dated 23 March 2026 (RN: 25/05689/FULL).

    Submitted 8 Jun 2026
  • 26/00220/ADFULL Refused

    79 Eaton Terrace London SW1W 8TN

    Sample panel of brickwork, built on site, which shows the colour, texture, face bond and pointing pursuant to condition 4 of planning permission dated 8th April 2025 (RN 24/08694/FULL)

    Decided 3 Mar 2026 Full applications
  • 26/00045/ADFULL Refused

    79 Eaton Terrace London SW1W 8TN

    Details of sample panel of brickwork held on site pursuant to condition 4 of planning permission dated 8th April 2025 (RN: 24/08694/FULL). Linked to 26/01343/ADLBC.

    Decided 23 Apr 2026 Full applications
  • 26/01343/ADLBC Refused

    79 Eaton Terrace London SW1W 8TN

    Details of sample panel of brickwork held on site pursuant to condition 3 of listed building consent dated 8th April 2025 (RN: 24/08695/LBC). Linked with 26/00045/ADFULL

    Decided 23 Apr 2026 Conditions
  • 25/05690/LBC Granted

    79 Eaton Terrace London SW1W 8TN

    Erection of lower ground floor and ground floor rear extensions. Alterations to windows on the rear elevation. Replacement of staircase and railings to front lightwell and installation of a rainwater downpipe to the front elevation. Internal alterations including lowering of floor of front vaults, alterations to stairs including stair winders in some levels; lowering of floor levels in lower ground floor rear room, first and second floors of closet wing, and installation of internal mechanical services.

    Decided 26 Mar 2026 Heritage and listed buildings

Timeline

Dates from the published record

  1. 13 Aug 2025

    Received by Westminster

  2. 11 Sep 2025

    Validated

    Checked as complete and ready for consideration.

  3. 26 Mar 2026

    Decision issued: Application Permitted

  4. 21 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/03720/ADFULL Decided

    79 Eaton Terrace London SW1W 8TN

    Details of sample panel of brickwork; detailed drawings of new windows and doors to the rear lower ground and ground floor extensions; and detailed drawings of a hard and soft landscaping scheme pursuant to Conditions 4, 7(a) and 15 of planning permission dated 23 March 2026 (RN: 25/05689/FULL).

    Submitted 8 Jun 2026

Who's behind it

Company information only, from the register and Companies House

Clark Architecture and Design ltd. Agent, an architecture practice registered in London

Active · incorporated 2017 · London

17 applications on PlanIndex · across 4 councils · 79% 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

54 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Westminster granted permission on 26 March 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

  • 79 Eaton Terrace London SW1W 8TN

    25/05690/LBC Submitted 13 Aug 2025 50 yards away

    Erection of lower ground floor and ground floor rear extensions. Alterations to windows on the rear elevation. Replacement of staircase and railings to front lightwell and installation of a rainwater downpipe to the front elevation. Internal alterations including lowering of floor of front vaults, alterations to stairs including stair winders in some levels; lowering of floor levels in lower ground floor rear room, first and second floors of closet wing, and installation of internal mechanical services.

    Granted Heritage and listed buildings Extension Windows or glazing 21 docs

  • 79 Eaton Terrace London SW1W 8TN

    26/00220/ADFULL Submitted 15 Jan 2026 50 yards away

    Sample panel of brickwork, built on site, which shows the colour, texture, face bond and pointing pursuant to condition 4 of planning permission dated 8th April 2025 (RN 24/08694/FULL)

    Refused Full applications 11 docs

  • 79 Eaton Terrace London SW1W 8TN

    26/03771/ADLBC Submitted 8 Jun 2026 50 yards away

    90% historically approved · decision due ~3 Sep

    Detailed drawings of a) new windows and doors to the rear lower ground and ground floor extensions; b) new rear dormer windows; c) new staircase; d) new cornicing and skirting; and e) internal doors pursuant to Condition 6 of listed building consent dated 23 March 2026 (RN: 25/05690/LBC) [Linked to 26/03720/ADFULL]

    Awaiting decision Conditions Extension Loft or dormer +1 18 docs

  • 79 Eaton Terrace London SW1W 8TN

    26/00045/ADFULL Submitted 6 Jan 2026 50 yards away

    Details of sample panel of brickwork held on site pursuant to condition 4 of planning permission dated 8th April 2025 (RN: 24/08694/FULL). Linked to 26/01343/ADLBC.

    Refused Full applications 9 docs

  • 79 Eaton Terrace London SW1W 8TN

    26/01343/ADLBC Submitted 6 Jan 2026 50 yards away

    Details of sample panel of brickwork held on site pursuant to condition 3 of listed building consent dated 8th April 2025 (RN: 24/08695/LBC). Linked with 26/00045/ADFULL

    Refused Conditions 9 docs

  • 79 Eaton Terrace London SW1W 8TN

    26/03720/ADFULL Submitted 8 Jun 2026 50 yards away

    89% historically approved · decision due ~3 Sep

    Details of sample panel of brickwork; detailed drawings of new windows and doors to the rear lower ground and ground floor extensions; and detailed drawings of a hard and soft landscaping scheme pursuant to Conditions 4, 7(a) and 15 of planning permission dated 23 March 2026 (RN: 25/05689/FULL).

    Decided Extension Windows or glazing 25 docs

In Westminster

  • 26/06295/FULL Awaiting decision

    15 Warwick Way London SW1V 1QT

    Installation of a new shopfront.

    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 repolacement window and installation of double opening door.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 26/06222/FULL Awaiting decision

    42 - 49 St Martin's Lane London WC2N 4EJ

    Entrance alterations, illuminated fascia sign to St Martins Lane entrance and glazed openings for digital signage

    Received 11 Sep, published by the council 21 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))

    Received 11 Sep, published by the council 18 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)

    Received 11 Sep, published by the council 18 Sep 2026 Full applications