Planning application
26 Lancaster Mews London W2 3QE
Works: Extension Loft or dormer Windows or glazing
Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.
Proposal
Variation of Condition 1 of planning permission dated 17 June 2026 (RN: 25/02702/FULL) for 'Removal of the dormer extension at roof level, construction of a mansard roof extension and alterations to front elevation including new and replacement windows, juliette balcony, entrance door and garage doors and conversion of garage'. NAMELY to amend the approved drawings to allow amendment of first-floor window proportions, removal of Juliette balcony, and the use of reclaimed London stock brick in place of painted brickwork.
As published by the council, reference 26/00542/FULL
Application record
- Reference
- 26/00542/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Application Refused
- Received
- 30 Jan 2026
- Validated
- 30 Jan 2026
- Decided
- 13 Apr 2026
- Ward
- Lancaster Gate
- Decision by
- Delegated Decision
- Postcode
- W2 3QE
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2026: 0 approved, 1 refused.
-
26/00739/FULL Awaiting decision
26 Lancaster Mews London W2 3QE
Variation of Condition 1 of planning permission dated 17 June 2025 (RN: 25/02702/FULL) for 'Removal of the dormer extension at roof level, construction of a mansard roof extension and alterations to front elevation including new and replacement windows, juliette balcony, entrance door and garage doors and conversion of garage'. Namely to install low-profile railings at roof level, add recessed planters, and amend the position and size of rooflights.
Timeline
Dates from the published record
-
30 Jan 2026
Received by Westminster
-
13 Apr 2026
Decision issued: Application Refused
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
MBBM Studio Architects Ltd Agent, an architecture practice
29 applications on PlanIndex · across 8 councils · 67% 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
10 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.
Trade members open them from here.
Open the documentsWhat this refusal means
Westminster refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.
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
-
26 Lancaster Mews London W2 3QE
87% historically approved · decision due ~3 Apr
Variation of Condition 1 of planning permission dated 17 June 2025 (RN: 25/02702/FULL) for 'Removal of the dormer extension at roof level, construction of a mansard roof extension and alterations to front elevation including new and replacement windows, juliette balcony, entrance door and garage doors and conversion of garage'. Namely to install low-profile railings at roof level, add recessed planters, and amend the position and size of rooflights.
Awaiting decision Full applications Extension Loft or dormer +1 4 docs -
Spire House Lancaster Gate London W2 3NP
Replacement mesh fencing to the main Lancaster Gate elevation with metal railings on a stone plinth to match those erected at Cleveland Gardens.
Granted Heritage and listed buildings 2 docs -
Spire House Lancaster Gate London W2 3NP
Replacement mesh fencing to the main Lancaster Gate elevation with metal railings on a stone plinth to match those erected at Cleveland Gardens.
Granted Full applications 5 docs -
21 Spire House Lancaster Gate London W2 3NP
Single storey extension to enclose terrace of fifth floor flat, erection of new external walls to match existing, new windows and construction of flat roof with rooflights.
Refused Full applications Extension Loft or dormer +1 21 docsSmall domestic -
Spire House Lancaster Gate London W2 3NP
91% historically approved · decision due ~4 Jun
Detailed Conservation Method Statement(s), proposed extent of rebuild / fabric replacement and record of the pinnacles and fabric surrounding pursuant to Conditions 4, 5 and 6 of Listed Building Consent dated 02 August 2024 (RN:24/04866/LBC)
Awaiting decision Conditions 3 docs -
Spire House Lancaster Gate London W2 3NP
91% historically approved · decision due ~4 Nov
Details of elevation drawings of the west, north and east sides of the building showing the location of scaffolding structure pursuant to Condition 7 of Listed Building Consent dated 02 August 2024 (RN24/04866/LBC)
Awaiting decision Conditions 7 docs
Other full applications
In Westminster
-
26/06295/FULL Awaiting decision
15 Warwick Way London SW1V 1QT
Installation of a new shopfront.
-
26/06297/FULL Awaiting decision
15 Warwick Way London SW1V 1QT
Alterations to rear elevation at basement level comprising repolacement window and installation of double opening door.
-
26/06234/FULL Awaiting decision
40 Grosvenor Place London SW1X 7HJ
Use of lower ground floor of Unit 3 and ground floor of Unit 2 as gym (Class E(d)) and/ or office (Class E(g))
-
26/06249/FULL Awaiting decision
53 Wimpole Street London W1G 8YH
Removal and Installation of external rear air condensers and associated pipe work to ground floor, including internal works to ground and first floor. (Linked with 26/06250/LBC)
-
26/03576/FULL Decided
15A Devonshire Terrace London W2 3DW
Erection of an infill extension to basement courtyard to form new bedroom and internal alterations. (Linked with 26/03577/LBC)