Planning application
17 Grosvenor Street London W1K 4QH
Works: Loft or dormer Windows or glazing
Relates to 25/09112/FULL
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Variation of condition 1 of planning permission dated 2nd April 2026 (RN:25/09112/FULL) for the Installation of air source heat pump in modified plant enclosure; green roof and rooflights; modifications to front mansard profile and front elevation. Namely, omission of 3 rooflights over the 4th floor and addition of a dormer window at the 4th floor rear and addition of a mechanical vent and heat recovery unit at the rear of the central flat roof. (Application under section 73 of the Act)
As published by the council, reference 26/05516/FULL
Application record
- Reference
- 26/05516/FULL
- Category
- Full applications
- Status
- Pending
- Received
- 13 Aug 2026
- Validated
- 13 Aug 2026
- Ward
- West End
- Postcode
- W1K 4QH
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025: 1 approved, 0 refused.
-
25/09112/FULL Granted
17 Grosvenor Street London W1K 4QH
Installation of air source heat pump in modified plant enclosure; green roof and rooflights; modifications to front mansard profile and front elevation.
Timeline
Dates from the published record
-
13 Aug 2026
Received by Westminster
-
28 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 8 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Westminster took a median of 61 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
-
25/09112/FULL Granted
17 Grosvenor Street London W1K 4QH
Installation of air source heat pump in modified plant enclosure; green roof and rooflights; modifications to front mansard profile and front elevation.
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice registered in East Sussex
2 applications on PlanIndex
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
17 documents on file for this application
- RECEIPT OF APPLICATION
- APPLICATIONFORMREDACTED
- ATTACHMENTSUMMARY
- CONSENTED FOURTH FLOOR PLAN
- CONSENTED FIFTH FLOOR / ROOF PLAN
- CONSENTED ACOUSTIC REPORT
- CONSENTED REAR ELEVATIONS
- CONSENTED SOUTH-NORTH SECTION
- CONSENTED WEST ELEVATION
- PROPOSED FOURTH FLOOR PLAN
- PROPOSED FIFTH FLOOR / ROOF PLANS
- PROPOSED ACOUSTIC REPORT
- PROPOSED WEST ELEVATION DETAIL
- PROPOSED REAR ELEVATIONS
- PROPOSED SOUTH-NORTH SECTION
- PROPOSED WEST ELEVATION
- SUPPORTING STATEMENT
Trade members open them from here.
Open the documentsWhat happens while it is decided
This application is with Westminster for determination, against a statutory target of eight weeks. Over the last year Westminster decided full applications in a median of 85 days. More in our guide to how long planning decisions take.
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 500 metres
-
17 Grosvenor Street London W1K 4QH
Installation of air source heat pump in modified plant enclosure; green roof and rooflights; modifications to front mansard profile and front elevation.
Granted Full applications Loft or dormer 35 docs -
14 Brook's Mews London W1K 4DT
Display for a temporary period of six months of a non-illuminated 'to let' Estate Agent Board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
Granted Advertising 2 docs -
14 Brook's Mews London W1K 4DT
Display for a temporary period of six months of a non-illuminated 'to let'/ 'for sale' board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
Granted Advertising 2 docs -
14-16 Brook's Mews London W1K 4DT
Detailed drawings and a bio-diversity management plan in relation to the green roof; to include construction method, layout, species and maintenance regime pursuant to Condition 4 of planning permission dated 21 December 2011 (RN: 11/07641).
Granted Full applications 10 docs -
14 Brook's Mews London W1K 4DT
Display for a temporary period of six months of a non-illuminated 'to let' Estate Agent Board located on the face of the building at a height of between 3m and 4.6m above pavement level and measuring 1.2m x 0.9m.
Granted Advertising 1 doc -
17 Brook's Mews London W1K 4DT
Use of the ground floor as a management office in association with the residential accommodation. Installation of a new glazed shopfront and entrance door.
Refused Full applications Windows or glazing 9 docs
Other full applications
In Westminster
-
26/06024/FULL Awaiting decision
House Of Commons Palace Of Westminster Parliament Square London SW1A 0AA
Installation of new and replacement electronic equipment within Speaker. (Linked with 26/06025/LBC)
-
26/06017/FULL Awaiting decision
38 Lauderdale Mansions Lauderdale Road London W9 1NE
Installation of an external AC Unit / Heat Pump at roof level.
-
26/05938/FULL Awaiting decision
24 Vincent Square London SW1P 2NJ
Subdivision of existing residential property to create two self-contained 3-bedroom family homes, along with cycle parking and associated external alterations.
-
26/05935/FULL Awaiting decision
47 Hereford Road London W2 5AH
Installation of one number new external condenser unit to the southerly elevation service alley.
-
26/05959/FULL Awaiting decision
Basement And Ground Floor 50 New Bond Street London W1S 1BJ
Installation of three new condensers on the roof, within an existing designated plant area.