4 - 5 Cavendish Mews North London W1W 6LA

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

• 26/00516/NMA Granted

  4 - 5 Cavendish Mews North London W1W 6LA

  Amendments to planning permission dated 12th 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, roof extension reprofiling.

  Decided 30 Mar 2026 Amendments
• 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

1. 28 Aug 2025

   Received by Westminster

2. 22 Sep 2025

   Decision issued: Application Permitted

3. 21 Jul 2026

   Added to PlanIndex

Westminster granted permission on 22 September 2025, 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

  26/00516/NMA Submitted 29 Jan 2026 50 yards away

  Amendments to planning permission dated 12th 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, roof extension reprofiling.

  Granted Amendments Extension 15 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

  84% 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

  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)

  Decided Full applications Loft or dormer Windows or glazing

• 26/07459/NMA Awaiting decision

  1 Hanover Square London W1S 1HA

  Amendments to planning pemrission dated 10 October 2025 (RN: 25/01558/FULL) for the: Partial demolition, refurbishment and extension of the existing building to provide a sub-basement, basement, ground plus eight storey building; infilling and stepped rear extension; excavation of a new sub-basement level; installation of new plant equipment at basement and roof level; terraces at fourth, fifth, sixth, seventh and eighth floor levels; soft and hard landscaping; reprovision of car parking; new cycle parking facilities; and associated external works. Use of the building for retail and/or restaurant (Class E) on part ground floor and office (Class E) on all other floors. NAMELY, to allow alterations to the design of the ground floor frontages on Hanover Square and St George Street.

  Received 3 Nov, published by the council 5 Nov 2026 Amendments
• 26/07438/NMA Awaiting decision

  29 - 31 Hill Street London W1J 5LS

  Amendments to planning permission dated 1st July 2025 (RN 25/01006/FULL) for the external alterations at roof level including the creation of Level 04 roof terrace for use in association with existing office (Class E), replacement and installation of new plant and landscaping, replacement of windows, introduction of louvres, removal and replacement of rooflights, installation of new rooflight and other associated works. NAMELY, for alterations comprising of the removal of window sash boxes and weights, changes to the window mullion arrangement, the removal of two sash windows, the installation of secondary glazing, the removal of existing chamber hatch and installation of extract vent and integrated bench, the external replacement of rainwater goods and hoppers, the removal of bricks and installation of airbricks, minor demolition works, replacement of roof covering, removal of ductwork, roof plant rearrangement, the installation of a new external door to plant area, minor layout alterations and other associated works.

  Received 2 Nov, published by the council 6 Nov 2026 Amendments
• 26/07389/NMA Decided

  Flat 1 5 Grittleton Road London W9 2DD

  Amendments to planning permission dated 04 June 2025 (RN: 25/02022/FULL), NAMELY, amendment of Condition 4 to correct the property address from 9 Aldridge Road Villas to Flat 1 5 Grittleton Road.

  29 Oct 2026 Amendments
• 26/07377/NMA Awaiting decision

  60 Ledbury Road London W11 2AJ

  Amendments to planning permission dated 2nd October 2025 (RN 25/04018/FULL) for the Partial demolition, refurbishment, and erection of a mansard roof extension to form a new third floor with dormers to front, side and rear elevations; to form 6 flats (Class C3) on upper floors; external plant equipment and ductwork; lower ground floor excavation to increase floor to ceiling height; replacement windows; cycle parking and associated external alterations; use of the part ground floor and lower ground floor as retail and restaurant (Class E). Site includes 60-68 Ledbury Road) NAMELY, An amendment to the basement and ground floor drawing reference numbers; amendment to the description of development, in reference to restaurant and or retail use; and amendments to C

  Received 28 Oct, published by the council 3 Nov 2026 Amendments
• 26/07375/NMA Awaiting decision

  77 Hereford Road London W2 5BB

  Amendments to planning permission dated 4th August 2026 (RN 26/03970/FULL) for the Replacement of roof terrace access stair with glazed hatch, new timber decking and front and rear roof railings to roof terrace, with infilling side window of closet wing. NAMELY, Hinged hatch access substituted by sliding hatch.

  Received 28 Oct, published by the council 3 Nov 2026 Amendments