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Planning application

19 Cumberland Street London SW1V 4LS

Granted Westminster 25/08960/FULL Full Planning Permission Application

Works: Extension Loft or dormer Roofing Windows or glazing

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

Proposal

Lower ground floor rear infill extension with terrace above, replacement of rear first floor conservatory, new roof level rear single dormer with access to third floor roof terrace, alterations to windows and external refurbishment.

As published by the council, reference 25/08960/FULL

Application record

Reference
25/08960/FULL
Type
Full Planning Permission Application
Status
Decided
Decision
Granted As published: Application Permitted
Received
9 Dec 2025
Validated
9 Dec 2025
Decided
20 Mar 2026
Ward
Pimlico South
Decision by
Delegated Decision
Postcode
SW1V 4LS

Site history

Applications at this address on the Westminster register

This site has had 4 applications since 2025: 1 approved, 0 refused.

  • 26/06251/NMA Withdrawn

    19 Cumberland Street London SW1V 4LS

    Amendments to planning permission dated 20th March 2026 (RN: 25/08960/FULL) for Lower ground floor rear infill extension with terrace above, replacement of rear first floor conservatory, new roof level rear single dormer with access to third floor roof terrace, alterations to windows and external refurbishment, namely the change of conservatory gable roof to a flat GRP roof.

    Submitted 11 Sep 2026 Amendments
  • 26/03969/FULL Decided

    19 Cumberland Street London SW1V 4LS

    Installation of air conditioning unit and associated acoustic housing located at roof level.

    Submitted 16 Jun 2026 Full applications
  • 26/03499/ADFULL Awaiting decision

    19 Cumberland Street London SW1V 4LS

    Detailed Drawings of new external windows and doors; new dormer window showing relationship with the roof and new rear extensions including materials specification pursuant to condition 4 a, b, c of planning permission dated 10th March 2026 (RN 25/08960/FULL)

    Submitted 28 May 2026 Full applications

Timeline

Dates from the published record

  1. 9 Dec 2025

    Received by Westminster

  2. 20 Mar 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:

  • 26/06251/NMA Withdrawn

    19 Cumberland Street London SW1V 4LS

    Amendments to planning permission dated 20th March 2026 (RN: 25/08960/FULL) for Lower ground floor rear infill extension with terrace above, replacement of rear first floor conservatory, new roof level rear single dormer with access to third floor roof terrace, alterations to windows and external refurbishment, namely the change of conservatory gable roof to a flat GRP roof.

    Submitted 11 Sep 2026 Amendments

Who's behind it

Company information only, from the register and Companies House

Studio AA Ltd Agent

13 applications on PlanIndex · across 6 councils · 82% granted

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

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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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What this grant of permission means

Westminster granted permission on 20 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

  • 19 Cumberland Street London SW1V 4LS

    26/06251/NMA Submitted 11 Sep 2026 50 yards away

    93% historically approved · decision due ~6 Nov

    Amendments to planning permission dated 20th March 2026 (RN: 25/08960/FULL) for Lower ground floor rear infill extension with terrace above, replacement of rear first floor conservatory, new roof level rear single dormer with access to third floor roof terrace, alterations to windows and external refurbishment, namely the change of conservatory gable roof to a flat GRP roof.

    Withdrawn Amendments Extension Loft or dormer +2

  • 19 Cumberland Street London SW1V 4LS

    26/03969/FULL Submitted 16 Jun 2026 50 yards away

    88% historically approved · decision due ~11 Aug

    Installation of air conditioning unit and associated acoustic housing located at roof level.

    Decided Full applications

  • 19 Cumberland Street London SW1V 4LS

    26/03499/ADFULL Submitted 28 May 2026 50 yards away

    88% historically approved · decision due ~23 Jul

    Detailed Drawings of new external windows and doors; new dormer window showing relationship with the roof and new rear extensions including materials specification pursuant to condition 4 a, b, c of planning permission dated 10th March 2026 (RN 25/08960/FULL)

    Awaiting decision Full applications Extension Loft or dormer +1 10 docs

  • 9 Cumberland Street London SW1V 4LS

    22/02379/CLEUD Submitted 7 Apr 2022 50 yards away

    Use of a ground floor unit as a studio flat.

    Refused Lawful development 17 docs

  • Cumberland Court Cumberland Street London SW1V 4LR

    26/01637/FULL Submitted 13 Mar 2026 50 yards away

    88% historically approved · decision due ~8 May

    Variation of condition 1 of planning permission dated 10th July 2012 (RN 12/03613/FULL) which itself varied condition 1 of planning permission dated 25 November 2010 (RN: 10/02562) for: "Erection of single storey extension at fourth floor roof level in connection with provision of one residential flat, and erection of lift shaft within internal lightwell from basement to fourth floor leve". NAMELY, amendments to allow internal layout alterations; the introduction of new slot windows; change in external material from the approved aluminium composite cladding to a silicone render of a similar colour; and alteration to the roof form raising the roof height adjacent to the party walls to and a reduction in overhang.

    Awaiting decision Full applications Extension Windows or glazing 27 docs
    Small domestic

  • 17 Sutherland Street London SW1V 4JU

    26/02510/LBC Submitted 16 Apr 2026 50 yards away

    90% historically approved · decision due ~11 Jun

    Replacement of existing pine spindles on the main stair from ground to third floor, for metal spindles.

    Awaiting decision Heritage and listed buildings 7 docs

In Westminster

  • 26/06234/FULL Decided

    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
  • 26/06015/FULL Decided

    129 Saltram Crescent London W9 3JT

    Erection of a two-storey rear extension.

    Received 3 Sep, published by the council 11 Sep 2026 Full applications
  • 26/07382/FULL Awaiting decision

    90 Gloucester Place London W1U 6HS

    Use of the building as an embassy (sui generis)

    Received 28 Oct, published by the council 2 Nov 2026 Full applications
  • 26/07363/FULL Awaiting decision

    36 Kilravock Street London W10 4HX

    Demolition of existing rear/side extension and construction of a new extension together with new glazing and doors, and changing the existing rooflights to the rear roof slope with new rooflights.

    Received 28 Oct, published by the council 2 Nov 2026 Full applications
  • 26/07371/FULL Awaiting decision

    8A Randolph Road London W9 1AN

    Amalgamation of two residential units with internal refurbishment and reconfiguration. (Linked with 26/07372/LBC)

    Received 28 Oct, published by the council 2 Nov 2026 Full applications