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Planning application

29 Ennismore Mews London SW7 1AP

Awaiting decision Westminster 26/02233/NMA Non-material amendments

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.

  • 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.

    Submitted 10 Aug 2026 Full applications
  • 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.

    Submitted 26 Jun 2026 Amendments
  • 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)

    Submitted 1 Apr 2026 Full applications
  • 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)

    Submitted 1 Apr 2026 Full applications
  • 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).

    Decided 14 Aug 2025 Full applications

Timeline

Dates from the published record

  1. 2 Apr 2026

    Received by Westminster

  2. 15 Apr 2026

    Validated

    Checked as complete and ready for consideration.

  3. 21 Jul 2026

    Added to PlanIndex

  4. 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 66 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 documents

What 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 54 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

    26/02196/ADFULL Submitted 1 Apr 2026 50 yards away

    87% 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

    26/05410/FULL Submitted 10 Aug 2026 50 yards away

    87% 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

    26/02197/ADFULL Submitted 1 Apr 2026 50 yards away

    87% 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

    26/04229/NMA Submitted 26 Jun 2026 50 yards away

    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
  • 51 Ennismore Gardens London SW7 1AH

    22/03607/LBC Submitted 31 May 2022 50 yards away

    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
  • 49 Ennismore Gardens London SW7 1AH

    20/07365/FULL Submitted 17 Nov 2020 50 yards away

    Variation of condition 1 of planning permission dated 01 September 2020 (RN: 20/03649/FULL) for 'Amalgamation of Flats 1 and 2 on lower ground, raised ground floor and first floor level. Rebuilding of rear extension including provision of French doors onto existing rear ground floor terrace. Reconfiguration of existing lightwell areas and glazed roof over raised ground floor light well enclosure. Lowering of existing lower ground floor level'. Namely, to allow amendments including raising of patio boundary walls by 50 and 48 Ennismore Gardens and revision of the conservation rooflight position.

    Withdrawn Full applications New dwelling Extension +2 28 docs

In Westminster

  • 26/06232/NMA Awaiting decision

    37 Trevor Place London SW7 1LE

    Amendments to planning permission dated 17th July 2026 (RN 26/03030/FULL) for the Alterations including enlargement of louvres and installation of new plant in basement; landscaping of roof terrace; second floor windows replaced with door sets; partial demolition at ground and first floor levels to create new lightwell and landscaped courtyard. NAMELY, addition of a free-standing sauna to the second-floor roof terrace.

    Received 11 Sep, published by the council 21 Sep 2026 Amendments
  • 26/06256/NMA Awaiting decision

    Queens Court Queensway London W2 4QN

    Amendments to planning permission dated 21st May 2026 (RN:25/05013/FULL) for Variation of conditions 1, 3, 8, 9 and 17 of planning permission dated 11th May 2022 (RN 18/09765/FULL) for the Change of use of rear part of Queensway Market to Retail, Financial and Professional services, Office and Restaurant (within Class E) use and 5 residential units facing Princes Court, reconfiguration of retail units along Queensway including introduction of Retail uses at Nos.23 and 33 (current entrances to Queensway Market) and use of Nos.25 and 41-43 Queensway as Restaurant uses, installation of new shopfronts to Nos.23 to 43 Queensway 23-43, erection of infill extension to rear at ground floor level, erection of two new pavilion structures for Retail use and associated new hard and soft landscaping on land between Queens Court and Princes Court, installation of green roofs, rooflights and mechanical plant within enclosures to first floor level roofs between projecting rear wings of Queens Court installation of kitchen extract ducts to rear elevations, and associated cycle parking, waste storage, plant and other ancillary alterations ('Application 2'). Namely, to vary the hours of operation for the refrigeration plant controlled by condition 6.

    Received 11 Sep, published by the council 21 Sep 2026 Amendments
  • 26/06251/NMA Awaiting decision

    19 Cumberland Street London SW1V 4LS

    Amendments to planning permission dated 20th March 2026 (RN:25/08960/FULL) for Lower ground floor rear infill extension with terrace above, replacement of rear first floor conservatory, new roof level rear single dormer with access to third floor roof terrace, alterations to windows and external refurbishment, namely the change of conservatory gable roof to a flat GRP roof.

    Received 11 Sep, published by the council 18 Sep 2026 Amendments
  • 26/06201/NMA Awaiting decision

    Almack House 28 King Street St James's London SW1Y 6QW

    Amendments to planning permission dated 16th April 2026 (RN:26/01487/FULL) for Installation of a mechanical plant at lower ground floor and installation of two grilles to two lower ground floor windows, namely change to approved grille.

    Received 10 Sep, published by the council 17 Sep 2026 Amendments
  • 26/06212/NMA Awaiting decision

    10 - 11 Lancaster Gate London W2 3LH

    Amendment to Condition 12 (Whole Life Carbon) of planning permission dated 19th April 2024 (RN 23/04044/FULL) for Change of use from hotel to residential use (Class C3) with associated internal alterations to create 11 new units and external alterations comprising reconfiguration and recladding of the rear extension and restoration of the existing building. Namely to include additional requirement to evidence and justify where benchmarks cannot be achieved, consider mitigation measures and if none, evidence that all mitigation measures have been exhausted. (Linked with RN 26/06213/ADFULL)

    Received 10 Sep, published by the council 17 Sep 2026 Amendments