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Planning application

17 Chapel Street London SW1X 7BY

Awaiting decision Westminster 26/01389/ADFULL Approval of Details (Full PP)

Works: Windows or glazing

Relates to 26/01476/ADLBC

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Details of windows and doors pursuant to Condition 4 of planning permission dated 24 July 2025 (RN: 25/01676/FULL). [Linked to 26/01476/ADLBC]

As published by the council, reference 26/01389/ADFULL

Application record

Reference
26/01389/ADFULL
Type
Approval of Details (Full PP)
Status
Pending
Received
4 Mar 2026
Validated
4 Mar 2026
Ward
Knightsbridge & Belgravia
Postcode
SW1X 7BY

Site history

Applications at this address on the Westminster register

This site has had 9 applications since 2025: 0 approved, 1 refused.

  • 26/04885/LBC Awaiting decision

    17 Chapel Street London SW1X 7BY

    Erection of an additional storey at main roof level and a rear extension at lower ground floor level with terrace over and associated internal alterations (Linked with 26/04162/NMA)

    Submitted 21 Jul 2026 Heritage and listed buildings
  • 26/04162/NMA Awaiting decision

    17 Chapel Street London SW1X 7BY

    Amendments to planning permission dated 24 July 2025 (25/01676/FULL) for: Erection of an additional storey at main roof level and a rear extension at lower ground floor level with terrace over namely; to allow alterations to floor plans; reduction in number of roof lights in rear extension, from two to one; maintenance access hatch in main roof (Linked with 26/04885/LBC)

    Submitted 23 Jun 2026 Amendments
  • 26/03892/LBC Awaiting decision

    17 Chapel Street London SW1X 7BY

    Erection of timber glazed orangery extension to existing first floor rear terrace and associated internal alterations. (Linked with 26/03891/FULL)

    Submitted 15 Jun 2026 Heritage and listed buildings
  • 26/03891/FULL Awaiting decision

    17 Chapel Street London SW1X 7BY

    Erection of timber glazed orangery extension to existing first floor rear terrace. (Linked with 26/03892/LBC)

    Submitted 15 Jun 2026 Full applications
  • 26/03816/ADFULL Decided

    17 Chapel Street London SW1X 7BY

    Details of Arboricultural method statement pursuant to condition 6 of planning permission dated 24 July 2025 (RN: 25/01676/FULL).

    Submitted 10 Jun 2026
  • 26/01476/ADLBC Awaiting decision

    17 Chapel Street London SW1X 7BY

    Details of new staircase to fourth floor pursuant to Condition 3 of listed building consent dated 24 July 2025 (RN: 25/01677/LBC). [Linked to 26/01389/ADFULL]

    Submitted 4 Mar 2026 Conditions
  • 26/01057/ADFULL Awaiting decision

    17 Chapel Street London SW1X 7BY

    Details of tree method statement pursuant to Condition 6 of planning permission dated 24/07/2025 (RN: 25/01676/FULL)

    Submitted 19 Feb 2026 Full applications
  • 25/07612/ADFULL Refused

    17 Chapel Street London SW1X 7BY

    Detailed drawings of a) All new external windows and doors and b) The timber screen/trellis to the roof terrace on the rear extension and a tree protection method statement pursuant to Conditions 4 and 6 of planning permission dated 24 July 2025 (RN: 25/01676/FULL).

    Decided 10 Feb 2026 Full applications

Timeline

Dates from the published record

  1. 4 Mar 2026

    Received by Westminster

  2. 21 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 29 April 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 91 days over the applications it decided in the last year.

Cases linked to this one on the register

  • 26/01476/ADLBC Awaiting decision

    17 Chapel Street London SW1X 7BY

    Details of new staircase to fourth floor pursuant to Condition 3 of listed building consent dated 24 July 2025 (RN: 25/01677/LBC). [Linked to 26/01389/ADFULL]

    Submitted 4 Mar 2026 Conditions

1 later application on the register refers to this one:

  • 26/01476/ADLBC Awaiting decision

    17 Chapel Street London SW1X 7BY

    Details of new staircase to fourth floor pursuant to Condition 3 of listed building consent dated 24 July 2025 (RN: 25/01677/LBC). [Linked to 26/01389/ADFULL]

    Submitted 4 Mar 2026 Conditions

Who's behind it

Company information only, from the register and Companies House

Hyatt Group Ltd Agent, registered in London

Dissolved · incorporated 2006 · London

11 applications on PlanIndex · across 4 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 record

Documents

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.

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

Open the documents

What 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 full applications in a median of 119 days. More in our guide to how long planning decisions take.

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

  • 17 Chapel Street London SW1X 7BY

    26/01476/ADLBC Submitted 4 Mar 2026 50 yards away

    89% historically approved · decision due ~29 Apr

    Details of new staircase to fourth floor pursuant to Condition 3 of listed building consent dated 24 July 2025 (RN: 25/01677/LBC). [Linked to 26/01389/ADFULL]

    Awaiting decision Conditions 10 docs

  • 22 Chapel Street London SW1X 7BY

    26/02319/LBC Submitted 8 Apr 2026 50 yards away

    90% historically approved · decision due ~3 Jun

    Proposed defect remedial and waterproofing works to:- railings & stone kerb upstand, entrance portico; balcony balustrade and stucco work to elevation and columns at:- lower ground; ground and first storey levels. (Linked to 26/02318/FULL)

    Awaiting decision Heritage and listed buildings 16 docs

  • 22 Chapel Street London SW1X 7BY

    26/02318/FULL Submitted 8 Apr 2026 50 yards away

    88% historically approved · decision due ~3 Jun

    Proposed defect remedial and waterproofing works to:- railings & stone kerb upstand, entrance portico; balcony balustrade and stucco work to elevation and columns at:- lower ground; ground and first storey levels. (Linked to 26/02319/LBC)

    Awaiting decision Full applications 16 docs

  • 17 Chapel Street London SW1X 7BY

    25/07612/ADFULL Submitted 21 Oct 2025 50 yards away

    Detailed drawings of a) All new external windows and doors and b) The timber screen/trellis to the roof terrace on the rear extension and a tree protection method statement pursuant to Conditions 4 and 6 of planning permission dated 24 July 2025 (RN: 25/01676/FULL).

    Refused Full applications Extension Windows or glazing +1 13 docs

  • 10 Chapel Street London SW1X 7BY

    26/03107/ADFULL Submitted 12 May 2026 50 yards away

    88% historically approved · decision due ~7 Jul

    Details of window at rear third floor above closet wing extension and conservation skylights / new windows within closet wing extension pursuant to conditions 6 and 7 of planning permission dated 08 July 2025 (RN: 25/01535/FULL)

    Awaiting decision Full applications Extension Windows or glazing 8 docs

  • 17 Chapel Street London SW1X 7BY

    26/03816/ADFULL Submitted 10 Jun 2026 50 yards away

    89% historically approved · decision due ~5 Aug

    Details of Arboricultural method statement pursuant to condition 6 of planning permission dated 24 July 2025 (RN: 25/01676/FULL).

    Decided

In Westminster

  • 26/07528/FULL Awaiting decision

    69 Eaton Place London SW1X 8DF

    Installation of new cast iron water pipe on rear courtyard elevation. (Linked with 26/07529/LBC)

    Received 5 Nov, published by the council 6 Nov 2026 Full applications
  • 26/05200/FULL Decided

    1 The Court House 165 Seymour Place London W1H 4PU

    Installation of waterproofing system to the existing lead flat roofs

    Received 3 Aug, published by the council 28 Aug 2026 Full applications
  • 26/07521/FULL Awaiting decision

    Flat 18 Harlequin Court 20 Tavistock Street London WC2E 7NZ

    Installation of one external condenser unit

    Received 4 Nov, published by the council 6 Nov 2026 Full applications
  • 26/07508/FULL Awaiting decision

    Buckingham Palace The Mall London SW1A 1AA

    Replacement of existing security lighting to the Buckingham Palace Forecourt with 80 compact LED spotlights installed within the lantern clusters across 10 principal piers, with associated concealed cabling and reversible fixings. (Linked with 26/07509/LBC)

    Received 4 Nov, published by the council 5 Nov 2026 Full applications
  • 26/07472/FULL Awaiting decision

    Flat 3 82 New Cavendish Street London W1G 9TA

    Replacement windows to second floor level with vacuum, double glazing windows. (Linked with 26/07473/LBC)

    Received 3 Nov, published by the council 6 Nov 2026 Full applications