63 Blandford Street London W1U 7HR Data via plota.co.uk
Proposal
Variation of Condition 1 of planning permission dated 3rd November 2025 () for: Erection of mansard roof extension with three new front dormers, two rear dormers (one dormer window and one dormer door), raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level. NAMELY, to allow raising of the chimney stack to retain the same height relationship to the roof; formation of a brick party wall; provision of dormer windows to match neighbouring dormer profiles; alteration of the rear dormers to casement doors; and alteration to the proposed stair to the fourth floor. Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. A decision is expected by 3 Nov 2026. Comments are open until 28 Oct 2026.
Comment on this application ↗Documents 38
Statements & assessments 2
Plans & drawings 17
Consultation & comments 1
Other documents 18
Associated applications 5
Site constraints 8
Show the other 16 with distances
- 17 m65, Blandford Street W1Grade II
- 20 m34, Baker Street W1Grade II
- 21 m67, BLANDFORD STREET (See details for further address information)Grade II
- 62 m50-54, Blandford Street W1Grade II
- 68 mFire StationGrade II
- 74 m48, Blandford Street W1Grade II
- 78 m47A, MANCHESTER STREET W1 (See details for further address information)Grade II
- 79 m49 and 50, Manchester Street W1Grade II
- 80 m46, Blandford Street W1Grade II
- 80 m47 and 48, Manchester Street W1Grade II
- 83 m51 and 52, Manchester Street W1Grade II
- 85 m28A, MANCHESTER STREET W1 (See details for further address information)Grade II
- 95 mWestmoreland Arms Public HouseGrade II
- 120 mDurrant's HotelGrade II
- 132 m7-11, Robert Adam StreetGrade II
- 146 m100-106, Blandford Street W1Grade II
Checked on 28 September 2026. Historic England, the Environment Agency, Natural England 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.
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Important details
- Council
- Westminster
- Application type
- Full Planning Permission Application
- Postcode
- W1U 7HR
- Received
- 10 Jul 2026
- Validated
- 8 Sept 2026
- Ward
- Marylebone
- Case officer
- Show
- Target decision
- 3 Nov 2026
- Applicant
- Show
- Agent
- Studio Act
Public comments
No public comments yet.
17 neighbours consulted · Last counted 28 Sept 2026
Consultation & key dates
- Alt. reference
- PP-15074999
- Comments by
- 28 Oct 2026
- Site or press notice
- 28 Sept 2026
- Env. assessment
- No
Historical activity at this location
27 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
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63 Blandford Street London W1U 7HR
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Referenced application
Council archive
63 Blandford Street London W1U 7HR
Erection of mansard roof extension with three new front dormers, two rear dormers (one dormer window and one dormer door), raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level (Linked to 25/04450/LBC)
- Received
- 27 Jun 2025
- Outcome
- Pending
63 Blandford Street London W1U 7HR
Erection of mansard roof extension with three new front dormers, one dormer window (replace existing) and one dormer door to the rear, raising height of chimney by 330mm, installation of 6 over 6 pane slimline double glazed timber sash windows, installation of photovoltaic panels at roof level (Linked to 25/04449/FULL)
- Received
- 27 Jun 2025
- Outcome
- Pending
- Type
- Heritage