Planning application
1 Cavendish Square London W1G 0LA
Works: Loft or dormer Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Details of new windows and roof lights pursuant to Condition 5(B) PART of Listed Building Consent dated 03 September 2024 (RN23/08101/LBC)
As published by the council, reference 25/05570/ADLBC
Application record
- Reference
- 25/05570/ADLBC
- Type
- Approval of Details (ADLBC)
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 8 Aug 2025
- Validated
- 8 Aug 2025
- Decided
- 4 Nov 2025
- Ward
- West End
- Decision by
- Delegated Decision
- Postcode
- W1G 0LA
Site history
Applications at this address on the Westminster register
This site has had 6 applications since 2025: 6 approved, 0 refused.
-
26/00756/ADV Granted
1 Cavendish Square London W1G 0LA
Display of 1x non-illuminated surface mounted low level sign adjacent to the entrance door measuring 1.2m x 0.9m 1x halo illuminated fascia sign measuring 2.2m x 0.65m and two internally illuminated hanging signs measuring 1m x 0.8m
-
25/07814/LBC Granted
1 Cavendish Square London W1G 0LA
Installation of fibre optic cables along the lightwell street wall in existing tray work into basement comms room.
-
25/06203/FULL Granted
1 Cavendish Square London W1G 0LA
Variation of Condition 13 of planning permission dated 20th April 2023 (RN: 22/07690/FULL) for the Opening up to basement areas, lowering of floor in pavement vaults and corridors to increase the useable space, additional opening up to eastern ground floor area, forming of services voids to accommodate plant and equipment, reopening of existing skylight apertures to existing pitched roof for ventilation of services, alterations to eastern facade to accommodate a new plant deck, WC accommodation and small terrace, in -connection with the use of building as a restaurant/drinking establishment (Sui Generis) namely, to extend hours of opening. Application under S73 of the Act
-
25/04627/LBC Granted
1 Cavendish Square London W1G 0LA
Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).
-
25/04626/FULL Granted
1 Cavendish Square London W1G 0LA
Installation of surface mounted uplighters and associated alterations on the Margaret Street elevation of the building. (Linked with 25/04627/LBC and 25/04625/ADV).
Timeline
Dates from the published record
-
8 Aug 2025
Received by Westminster
-
4 Nov 2025
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Newmark LLP Agent
921 applications on PlanIndex · across 40 councils · 97% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
7 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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Open the documentsWhat this grant of permission means
Westminster granted permission on 4 November 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.
About condition discharge and variation applications
This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
2 Cavendish Square London W1G 0PA
Display for a temporary period of six months of a non-illuminated estate agent board attached to the railings in front of the building at street level and measuring 0.6 x 0.45m.
Granted Advertising 8 docs -
Fourth Floor 2 Cavendish Square London W1G 0PU
90% historically approved · decision due ~3 Nov
Installation of internal secondary glazing to the 4th-floor windows, with internal reversible, non-destructive fixings into the window reveals, and slimline units to maintain background ventilation and prevent interstitial condensation.
Awaiting decision Heritage and listed buildings Windows or glazing -
2 Cavendish Square London W1G 0PA
87% historically approved · decision due ~31 Dec
Removal of existing plant equipment, Installation of new air source heat pump, two new air conditioning units and relocation of four existing air conditioning units within existing plant enclosure at roof level. Associated alterations to lift atrium roof.
Awaiting decision Full applications 15 docs -
1 Cavendish Square London W1G 0LA
Installation of fibre optic cables along the lightwell street wall in existing tray work into basement comms room.
Granted Heritage and listed buildings 9 docs -
1 Cavendish Square London W1G 0LA
Display of 1x non-illuminated surface mounted low level sign adjacent to the entrance door measuring 1.2m x 0.9m 1x halo illuminated fascia sign measuring 2.2m x 0.65m and two internally illuminated hanging signs measuring 1m x 0.8m
Granted Advertising 12 docs -
1 Cavendish Square London W1G 0LA
Variation of Condition 13 of planning permission dated 20th April 2023 (RN: 22/07690/FULL) for the Opening up to basement areas, lowering of floor in pavement vaults and corridors to increase the useable space, additional opening up to eastern ground floor area, forming of services voids to accommodate plant and equipment, reopening of existing skylight apertures to existing pitched roof for ventilation of services, alterations to eastern facade to accommodate a new plant deck, WC accommodation and small terrace, in -connection with the use of building as a restaurant/drinking establishment (Sui Generis) namely, to extend hours of opening. Application under S73 of the Act
Granted Full applications 19 docs
Other condition discharge and variation applications
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26/04860/ADLBC Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Details of external and internal signage strategy pursuant to Condition 7(E) of listed building consent dated 12th February 2021 (RN: 19/07816/LBC)
-
26/04843/ADLBC Granted
New Zealand House 80 Haymarket London SW1Y 4TE
Detailed design and specification of new blinds to NZH based on mock-up trials on-site pursuant to Condition 6(m) of listed building consent dated 12th February 2021 (19/07816/LBC).
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26/05026/ADLBC Awaiting decision
St James's Park The Mall London SW1A 1AA
Details of method statement for re-carving works pursuant to condition 3(i) of listed building consent dated 16 July 2026 (RN: 26/03399/LBC)
-
26/04850/ADLBC Awaiting decision
17 Belgrave Square London SW1X 8PG
Detailed drawings of garage doors, roof lantern and any new lighting and flooring in the principal rooms pursuant to condition 6 (iii) (iv) (v) of listed building 18th August 2025 (RN:25/03417/LBC)
-
25/07120/ADLBC Granted
72 - 74 Lancaster Gate London W2 3NH
Details of new and altered doors and door architraves, including external faces of lifts (detailed elevations and sections at 1:10) pursuant to Condition 3 (A) of Listed Building Consent dated 14 December 2023 (RN: 23/00772/LBC) (Linked app: 25/07088/ADFULL)