Planning application
29 Ennismore Mews London SW7 1AP
Works: Extension Loft or dormer Windows or glazing
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Amendments to planning permission dated 19th March 2025 (RN 24/08165/FULL) for the Excavation of basement; erection of mansard roof extensions, including plant equipment in recesses; alterations to front and side elevations, including new and replacement windows and doors; all in connection with use as two residetail units. (Site includes Nos 29 & 29A Ennismore Mews.) NAMELY, render over the brickwork; Reinstate and enlarge the northernmost window on the first floor; Shift the dormer windows slightly from the approved position and adjust the other windows marginally to better balance the composition and to correspond with the internal layout; Enlarge the middle window on ground floor at 29A; and Shift entry door at 29 and enlarge entrance at 29A.
As published by the council, reference 26/02233/NMA
Application record
- Reference
- 26/02233/NMA
- Type
- Non-material amendments
- Status
- Pending
- Received
- 2 Apr 2026
- Validated
- 15 Apr 2026
- Ward
- Knightsbridge & Belgravia
- Postcode
- SW7 1AP
Site history
Applications at this address on the Westminster register
This site has had 6 applications since 2025: 1 approved, 0 refused.
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26/05410/FULL Awaiting decision
29 Ennismore Mews London SW7 1AP
External alterations to Nos. 29 and 29A Ennismore Mews, including erection of mansard extension to no.29 and alterations/ replacement of mansard to no.29A, alterations to front facade of 29 and 29A; installation of new window to side elevation at first floor level and alterations rooflights; installation and repositioning of CCTV cameras; relocation of air-conditioning condenser units to main roof level with associated acoustic screening and anti-vibration measures.
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26/04229/NMA Decided
29 Ennismore Mews London SW7 1AP
Amendments to planning permission dated 18 March 2025 (RN: 24/08165/FULL) for the excavation of basement; erection of mansard roof extensions, including plant equipment in recesses; alterations to front and side elevations, including new and replacement windows and doors; all in connection with use as two residential units (Site includes Nos 29 & 29A Ennismore Mews); NAMELY to apply render to match No. 29A, enlarge the northern first-floor and central ground-floor windows and rooflight, reposition dormers and windows, install CCTV cameras and parcel box and relocate and enlarge the entrances at Nos. 29 and 29A.
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26/02196/ADFULL Awaiting decision
29 Ennismore Mews London SW7 1AP
Details of Code of Construction Practice pursuant to condition 3 of planning permission dated 20th March 2025 (RN:24/08165/FULL)
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26/02197/ADFULL Awaiting decision
29 Ennismore Mews London SW7 1AP
Details of updated Flood Risk Assessment including site-specific groundwater monitoring information and necessary flood risk mitigation measures pursuant to condition 5 of planning permission dated 18 March 2025 (RN: 24/08165/FULL)
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25/05310/ADFULL Granted
29 Ennismore Mews London SW7 1AP
Details of contaminated land remediation (Phases 1, 2 and 3) pursuant to Condition 4 of planning permission dated 20 March 2025 (RN: 24/08165/FULL).
Timeline
Dates from the published record
-
2 Apr 2026
Received by Westminster
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15 Apr 2026
Validated
Checked as complete and ready for consideration.
-
21 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
Decision expected by 10 June 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 91 days over the applications it decided in the last year.
Documents
Plans, drawings, consultee responses and the officer's report
18 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.
Watch members (£5 a month) open the document list 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 amendment applications in a median of 81 days. More in our guide to how long planning decisions take.
About amendment applications
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.
Nearby applications
Within 0.3 miles
-
29 Ennismore Mews London SW7 1AP
88% historically approved · decision due ~10 Jun
Details of Code of Construction Practice pursuant to condition 3 of planning permission dated 20th March 2025 (RN:24/08165/FULL)
Awaiting decision Full applications 9 docs -
29 Ennismore Mews London SW7 1AP
88% historically approved · decision due ~14 Oct
External alterations to Nos. 29 and 29A Ennismore Mews, including erection of mansard extension to no.29 and alterations/ replacement of mansard to no.29A, alterations to front facade of 29 and 29A; installation of new window to side elevation at first floor level and alterations rooflights; installation and repositioning of CCTV cameras; relocation of air-conditioning condenser units to main roof level with associated acoustic screening and anti-vibration measures.
Awaiting decision Full applications Extension Loft or dormer +1 -
29 Ennismore Mews London SW7 1AP
88% historically approved · decision due ~10 Jun
Details of updated Flood Risk Assessment including site-specific groundwater monitoring information and necessary flood risk mitigation measures pursuant to condition 5 of planning permission dated 18 March 2025 (RN: 24/08165/FULL)
Awaiting decision Full applications 12 docs -
29 Ennismore Mews London SW7 1AP
93% historically approved · decision due ~21 Aug
Amendments to planning permission dated 18 March 2025 (RN: 24/08165/FULL) for the excavation of basement; erection of mansard roof extensions, including plant equipment in recesses; alterations to front and side elevations, including new and replacement windows and doors; all in connection with use as two residential units (Site includes Nos 29 & 29A Ennismore Mews); NAMELY to apply render to match No. 29A, enlarge the northern first-floor and central ground-floor windows and rooflight, reposition dormers and windows, install CCTV cameras and parcel box and relocate and enlarge the entrances at Nos. 29 and 29A.
Decided Amendments Extension Loft or dormer +1 -
11A Ennismore Mews London SW7 1AP
89% historically approved · decision due ~23 Nov
Details of the land contamination investigation and details of signed code of construction practice pursuant to conditions 5 (Phase 1) and 6 of the planning permission dated 29th May 2025 (RN:24/00532/FULL)''
Awaiting decision -
51 Ennismore Gardens London SW7 1AH
Application of waterproof membrane and replacement flashing to parapet gutter at front of mansard, replacement of the outlets from the parapet gutter to the rainwater hoppers, masonry cleaning, crack repairs to brickwork and to lightwell paving and installation of scaffold fixings.
Granted Heritage and listed buildings Loft or dormer 16 docs
Other amendment applications
In Westminster
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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.
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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.
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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.
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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
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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.