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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)

17 Grosvenor Street London W1K 4QH

PendingReference: 26/05516/FULLCity of Westminster

Last published check: 15 Sept 2026, 00:50. Check the council record for more recent changes.

Application location

17 Grosvenor Street London W1K 4QH

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Application summary

Status
Pending
Application type
Full Planning Permission Application
Received
13 Aug 2026
Validated
13 Aug 2026
Determination deadline
Not published
Local authority
City of Westminster

Application overview

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)

Proposal details

Reference
26/05516/FULL
Alternative references
PP-15131552
Ward
West End
Agent
COWIE MONTGOMERY ARCHITECTS

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Documents 25 of 25

DocumentPublishedAction
ACK-GENERAL LETTER (G/P/C)Background Papers · PDF2 Sept 2026View
NEIGHBOUR NOTIFICATION LETTER (21D)Background Papers · PDF2 Sept 2026View
SITE NOTICE 21 OR 28 DAYS IF T&C APPL.Background Papers · PDF2 Sept 2026View
CNSLT-LA SOCIETYBackground Papers · PDF2 Sept 2026View
CNSLT-LA SOCIETYBackground Papers · PDF2 Sept 2026View
CNSLT-LA SOCIETYBackground Papers · PDF2 Sept 2026View
CNSLT-LA SOCIETYBackground Papers · PDF2 Sept 2026View
CNSLT-LA SOCIETYBackground Papers · PDF2 Sept 2026View
RECEIPT OF APPLICATIONOther · PDF25 Aug 2026View
APPLICATIONFORMREDACTEDApplication Form · PDF13 Aug 2026View
ATTACHMENTSUMMARYBackground Papers · PDF13 Aug 2026View
CONSENTED FOURTH FLOOR PLANDrawing · PDF13 Aug 2026View
CONSENTED FIFTH FLOOR / ROOF PLANDrawing · PDF13 Aug 2026View
CONSENTED ACOUSTIC REPORTAcoustic report · PDF13 Aug 2026View
CONSENTED REAR ELEVATIONSDrawing · PDF13 Aug 2026View
CONSENTED SOUTH-NORTH SECTIONDrawing · PDF13 Aug 2026View
CONSENTED WEST ELEVATIONDrawing · PDF13 Aug 2026View
PROPOSED FOURTH FLOOR PLANDrawing · PDF13 Aug 2026View
PROPOSED FIFTH FLOOR / ROOF PLANSDrawing · PDF13 Aug 2026View
PROPOSED ACOUSTIC REPORTAcoustic report · PDF13 Aug 2026View
PROPOSED WEST ELEVATION DETAILDrawing · PDF13 Aug 2026View
PROPOSED REAR ELEVATIONSDrawing · PDF13 Aug 2026View
PROPOSED SOUTH-NORTH SECTIONDrawing · PDF13 Aug 2026View
PROPOSED WEST ELEVATIONDrawing · PDF13 Aug 2026View
SUPPORTING STATEMENTBackground Papers · PDF13 Aug 2026View

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Application timeline

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  1. Application Received Date

    Published milestoneCouncil source

  2. Application Validated Date

    Published milestoneCouncil source

  3. Last Advertised In Press Date

    Published milestoneCouncil source

  4. Latest Advertisement Expiry Date

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    Council source

  5. Target Date

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    Council source

Decision & conditions

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