2 Manchester Square London W1U 3PA Data via plota.co.uk
Proposal
Proposed infill of rear lightwell with walk-on, fire rated rooflights. Removal of the existing metal grill covering the lightwell; Infilling the lightwell at ground floor level to create an internal space; Installation of walk-on rooflights flush with the surrounding deck to allow daylight into the lower ground floor; Associated internal works to integrate the new structure, including provision for mechanical ventilation where required. New air handling unit to service rear room which has now become internal. Extended ventilation to service void under the suspended timber floor; Replacement of existing lead roof section on the ground floor, on a small corner adjacent to the bay window; Additional insulation to the rear lightwell floor slab, as this space will become internal; Revised floor build-up to the lower ground floor, rear extension room following discovery of the gridded masonry structure below the existing concrete slab. Data via plota.co.uk
Application progress
Approved on 10 Mar 2026 · Delegated Decision · Last checked 13 Oct 2026
Documents 40
Decision & officer reports 2
Statements & assessments 9
Plans & drawings 18
Application forms 2
Consultation & comments 1
Other documents 8
Site constraints 10
Show the other 36 with distances
- 9 mTrinity College of MusicGrade II
- 11 m26, MANCHESTER SQUARE W1 (See details for further address information)Grade II
- 14 m4-7, Manchester Square W1Grade II
- 35 m22-25, Manchester Square W1Grade II
- 36 m11, Hinde Street W1Grade II
- 38 m12, Hinde Street W1Grade II
- 42 m1a, Duke Street W1Grade II
- 42 m1, Duke Street W1Grade II
- 43 mK6 Telephone Kiosk, junction of Mandeville Place and Hinde Street, MaryleboneGrade II
- 56 m2, Hinde Street W1Grade II
- 60 m9 and 11, Duke Street W1Grade II
- 61 mHinde Street Methodist ChurchGrade II
- 66 m2a, Duke Street W1Grade II
- 70 m2, Duke Street W1Grade II
- 74 m8-11, Manchester Square W1Grade II
- 74 m4, Duke Street W1Grade II
- 75 mChurch House to Hinde Street Methodist ChurchGrade II
- 80 m6 and 8, Duke Street W1Grade II
- 80 m76 and 78, Wigmore Street W1Grade II
- 87 m1-5, Spanish Place W1Grade II
- 100 mDrinking Fountain in the forecourt of Hertford House (The Wallace Collection)Grade II*
- 103 mHertford HouseGrade II
- 104 m12-14, Manchester Square W1Grade II
- 105 m14-18, Fitzhardinge Street W1Grade II
- 108 mListed buildings 1263947
- 111 m9, Bentinck Street W1Grade II
- 113 m21, Bulstrode Street W1Grade II
- 114 mForecourt Walls, Gate Piers and Railings to Hertford HouseGrade II
- 116 m19, Bulstrode Street W1Grade II
- 117 m8, Bentinck Street W1Grade II
- 132 m122, Wigmore Street W1Grade II
- 135 m33-35, Thayer Street W1Grade II
- 136 m2-5, Fitzhardinge Street W1Grade II
- 139 m124, Wigmore Street W1Grade II
- 142 m23-31, St Christopher's Place W1Grade II
- 146 m126, Wigmore Street W1Grade II
Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
From the energy performance certificate lodged in April 2019, the latest held for this property. The building may have changed since. View the certificate
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1U 3PA
- Received
- 3 Oct 2025
- Validated
- 16 Oct 2025
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 13 Mar 2026
- Decision
- Application Permitted
- Decision date
- 10 Mar 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Garnett Architecture LLP
- Leaseholder
- Show
How this decision compares
Decided in 145 days from validation, 69 days slower than Westminster's median of 76 for full applications. Approved, as 86% of full applications here are.
Plota live figures for full applications decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
20 neighbours consulted · Last counted 13 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14119798
- Planning Portal ref
- PP-14119798
- Comments by
- 13 Nov 2025
- Site or press notice
- 23 Oct 2025
- Env. assessment
- No
Historical activity at this location
37 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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2 Manchester Square London W1U 3PA
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