4 - 5 Cavendish Mews North London W1W 6LA

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

• 25/08645/FULL Granted

  4 - 5 Cavendish Mews North London W1W 6LA

  Variation of condition 1 of planning permission dated 12 June 2024 (RN: 24/00473/FULL) for the: Erection of a roof extension and alterations to the front elevation to enlarge and alter residential dwelling (Class C3). Namely, to allow the installation of an air source heat pump within a roof level acoustic enclosure. (Application under section 73 of the Act).

  Decided 30 Mar 2026 Full applications
• 25/08472/ADFULL Granted

  4 - 5 Cavendish Mews North London W1W 6LA

  Details of windows, rooflights and balustrades detailing pursuant to condition 2 of planning permission dated 12 June 2024 (RN:24/00473/FULL)

  Decided 9 Mar 2026 Full applications
• 25/06141/NMA Granted

  4 - 5 Cavendish Mews North London W1W 6LA

  Amendments to planning permission dated 12th June 2024 (RN:24/00473/FULL) for Erection of a roof extension and alterations to the front elevation to enlarge and alter residential dwelling (Class C3) namely, the repositioning of windows to function as a skylight within the second floor mansard roof, the northernmost rooflight to be repositioned to serve as a secondary means of escape, the northernmost window at first floor level to be reconfigured to match the positioning of the existing surveyed windows and the omission of two rooflights.

  Decided 22 Sep 2025 Amendments

1. 29 Jan 2026

   Received by Westminster

2. 30 Mar 2026

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 30 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.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• 4 - 5 Cavendish Mews North London W1W 6LA

  25/08645/FULL Submitted 26 Nov 2025 50 yards away

  Variation of condition 1 of planning permission dated 12 June 2024 (RN: 24/00473/FULL) for the: Erection of a roof extension and alterations to the front elevation to enlarge and alter residential dwelling (Class C3). Namely, to allow the installation of an air source heat pump within a roof level acoustic enclosure. (Application under section 73 of the Act).

  Granted Full applications Extension 13 docs
  Domestic

• 4 - 5 Cavendish Mews North London W1W 6LA

  25/06141/NMA Submitted 28 Aug 2025 50 yards away

  Amendments to planning permission dated 12th June 2024 (RN:24/00473/FULL) for Erection of a roof extension and alterations to the front elevation to enlarge and alter residential dwelling (Class C3) namely, the repositioning of windows to function as a skylight within the second floor mansard roof, the northernmost rooflight to be repositioned to serve as a secondary means of escape, the northernmost window at first floor level to be reconfigured to match the positioning of the existing surveyed windows and the omission of two rooflights.

  Granted Amendments Extension Loft or dormer +1 13 docs
  Domestic

• 4 - 5 Cavendish Mews North London W1W 6LA

  25/08472/ADFULL Submitted 19 Nov 2025 50 yards away

  Details of windows, rooflights and balustrades detailing pursuant to condition 2 of planning permission dated 12 June 2024 (RN:24/00473/FULL)

  Granted Full applications Loft or dormer Windows or glazing 40 docs

• 46 Portland Place London W1B 1NF

  26/02183/CLEUD Submitted 1 Apr 2026 50 yards away

  86% historically approved · decision due ~27 May

  Confirmation on planning permission have been lawfully implemented by carrying out a material operation at the site, in accordance with the approved plans (Variation of condition 1 of planning permission dated 29 April 2016 (RN 14/12563/FULL) for the demolition of the rear extension to the building at lower ground, mezzanine, ground and first floor levels and rebuilding to include the creation of a terrace at rear first floor level. Excavation of additional basement levels and installation of plant at main roof and basement level all in association with the use of the property as a single family dwelling (Class C3) from RN 14/12563/FULL. NAMELY, to vary the approved drawings to enable additional excavation at basement levels, installation of photovoltaics at roof level, enlargement of the openings at ground and first floors, to change a window to a door to provide access to the terrace at rear first floor level and to alter the fenestration of the front elevation to the orangery with internal alterations at all floor levels)

  Awaiting decision Lawful development Extension Demolition +1 14 docs
  Domestic

• 46 Portland Place London W1B 1NF

  26/04128/LBC Submitted 23 Jun 2026 50 yards away

  90% historically approved · decision due ~18 Aug

  Internal alterations to the rear of the first floor, comprising the removal of non-original partitions, fixtures, fittings and doors associated with the existing WC/shower block and kitchen within the closet wing, together with the removal of suspended ceilings to reinstate original ceiling heights in the principal rooms. The works include the installation of a new WC and tea point with associated partitioning, and the formation of a new opening between the library/study and rear seating area, detailed with matching cornices and skirtings to respect the historic character and fabric of the building.

  Awaiting decision Heritage and listed buildings

• 46 Portland Place London W1B 1NF

  26/05632/FULL Submitted 18 Aug 2026 50 yards away

  87% historically approved · decision due ~19 Oct

  New dormer windows, replacement of all non-original windows, previously proposed windows and relevant external glazed doors with new painted windows and new glazed painted external doors that encompass vacuum glazing together with reinstatement of suitable joinery profiles throughout. (Linked with 26/04113/LBC)

  Awaiting decision Full applications Loft or dormer Windows or glazing

• 26/06232/NMA Awaiting decision

  37 Trevor Place London SW7 1LE

  Amendments to planning permission dated 17th July 2026 (RN 26/03030/FULL) for the Alterations including enlargement of louvres and installation of new plant in basement; landscaping of roof terrace; second floor windows replaced with door sets; partial demolition at ground and first floor levels to create new lightwell and landscaped courtyard. NAMELY, addition of a free-standing sauna to the second-floor roof terrace.

  Received 11 Sep, published by the council 21 Sep 2026 Amendments
• 26/06256/NMA Awaiting decision

  Queens Court Queensway London W2 4QN

  Amendments to planning permission dated 21st May 2026 (RN:25/05013/FULL) for Variation of conditions 1, 3, 8, 9 and 17 of planning permission dated 11th May 2022 (RN 18/09765/FULL) for the Change of use of rear part of Queensway Market to Retail, Financial and Professional services, Office and Restaurant (within Class E) use and 5 residential units facing Princes Court, reconfiguration of retail units along Queensway including introduction of Retail uses at Nos.23 and 33 (current entrances to Queensway Market) and use of Nos.25 and 41-43 Queensway as Restaurant uses, installation of new shopfronts to Nos.23 to 43 Queensway 23-43, erection of infill extension to rear at ground floor level, erection of two new pavilion structures for Retail use and associated new hard and soft landscaping on land between Queens Court and Princes Court, installation of green roofs, rooflights and mechanical plant within enclosures to first floor level roofs between projecting rear wings of Queens Court installation of kitchen extract ducts to rear elevations, and associated cycle parking, waste storage, plant and other ancillary alterations ('Application 2'). Namely, to vary the hours of operation for the refrigeration plant controlled by condition 6.

  Received 11 Sep, published by the council 21 Sep 2026 Amendments
• 26/06251/NMA Awaiting decision

  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.

  Received 11 Sep, published by the council 18 Sep 2026 Amendments
• 26/06201/NMA Awaiting decision

  Almack House 28 King Street St James's London SW1Y 6QW

  Amendments to planning permission dated 16th April 2026 (RN:26/01487/FULL) for Installation of a mechanical plant at lower ground floor and installation of two grilles to two lower ground floor windows, namely change to approved grille.

  Received 10 Sep, published by the council 17 Sep 2026 Amendments
• 26/06212/NMA Awaiting decision

  10 - 11 Lancaster Gate London W2 3LH

  Amendment to Condition 12 (Whole Life Carbon) of planning permission dated 19th April 2024 (RN 23/04044/FULL) for Change of use from hotel to residential use (Class C3) with associated internal alterations to create 11 new units and external alterations comprising reconfiguration and recladding of the rear extension and restoration of the existing building. Namely to include additional requirement to evidence and justify where benchmarks cannot be achieved, consider mitigation measures and if none, evidence that all mitigation measures have been exhausted. (Linked with RN 26/06213/ADFULL)

  Received 10 Sep, published by the council 17 Sep 2026 Amendments