9 Cumberland Street London SW1V 4LS

1. 7 Apr 2022

   Received by Westminster

2. 14 Apr 2022

   Validated

   Checked as complete and ready for consideration.

3. 3 Aug 2022

   Decision issued: Application Refused

4. 29 Jul 2026

   Added to PlanIndex

Westminster refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 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

• 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  Withdrawn Amendments Extension Loft or dormer +2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

• 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

• 19 Cumberland Street London SW1V 4LS

  25/08960/FULL Submitted 9 Dec 2025 50 yards away

  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.

  Granted Full applications Extension Loft or dormer +2 33 docs

• Second Floor Flat 79 Winchester Street London SW1V 4NU

  26/05769/FULL Submitted 24 Aug 2026 50 yards away

  88% historically approved · decision due ~12 Nov

  Installation of a roof-mounted automatic opening vent and two air source heat pump condenser units located on the existing flat roof.

  Awaiting decision Full applications

• 26/07339/CLOPUD Awaiting decision

  123 Victoria Street London SW1E 6DE

  Use of part of ground floor reception area within Class E including, but not limited to, a retail café (Class E(a)).

  Received 27 Oct, published by the council 30 Oct 2026 Lawful development
• 26/07345/CLOPUD Awaiting decision

  New Scotland Yard Victoria Embankment London SW1A 2JL

  Installation of Solar Gard Stainless Steel 20 solar control film to the internal face of the existing fifth-floor glazing.

  Received 27 Oct, published by the council 30 Oct 2026 Lawful development
• 26/07293/CLOPUD Awaiting decision

  4 Kildare Gardens London W2 5LU

  Installation of one air source heat pump on the ground in the rear garden, about 447mm from the southern boundary fence and 5612 mm from the rear wall of the building, mounted on anti-vibration feet on stone pavers, with no enclosure or housing. Includes insulated flow and return pipework and a power supply into the lower ground floor plant room. Proposed as permitted development under Schedule 2, Part 14, Class G of the GPDO 2015 (as amended).

  Received 26 Oct, published by the council 29 Oct 2026 Lawful development
• 26/07294/CLOPUD Awaiting decision

  6 - 7 Clifford Street London W1S 2FT

  Installation of a new glazed door and associated glazing infill at fifth-floor terrace level, with glazing to match the existing.

  Received 26 Oct, published by the council 28 Oct 2026 Lawful development
• 26/07290/CLEUD Awaiting decision

  82A Chiltern Street London W1U 5AQ

  Confirmation that digging of trench to contain part of foundations is lawful and that planning permission 23/03464/FULL dated 30 October 2023 commenced before expiry of the three year time period.

  Received 23 Oct, published by the council 29 Oct 2026 Lawful development