15 Rodmarton Street London W1U 8BL Data via plota.co.uk

26/00539/FULL - Full Planning Permission Application Approved
Extensions & alterations

Proposal

Erection of a single storey conservatory at rear ground floor level, use of the garage as internal living accommodation and installation of a new skylight at main roof level. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
29 Jan 2026
✓
Consultation
28 Mar 2026
✓
Approved
5 May 2026

Approved on 5 May 2026 · Delegated Decision · Last checked 3 Aug 2026

Documents 14

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 5 May 2026 View ↗ PDF DELEGATED REPORT Report · 5 May 2026 View ↗

Plans & drawings 6

PDF AMENDED DRAWING Drawing · 31 Mar 2026 View ↗ PDF AMENDED DRAWING Drawing · 31 Mar 2026 View ↗ PDF AMENDED DRAWING Drawing · 31 Mar 2026 View ↗ PDF SITE LOCATION PLAN AND BLOCK PLAN Location Plan · 29 Jan 2026 View ↗ PDF EXISTING AND PROPOSED GROUND FLOOR Drawing · 29 Jan 2026 View ↗ PDF EXISTING AND PROPOSED FIRST FLOOR Drawing · 29 Jan 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 29 Jan 2026 View ↗

Consultation & comments 1

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 28 Mar 2026 View ↗

Other documents 4

PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 28 Mar 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 28 Mar 2026 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 28 Mar 2026 View ↗ PDF RECEIPT OF APPLICATION Other · 10 Mar 2026 View ↗

All documents on the council site ↗

Associated applications 3

Site constraints 9

Portman Estate conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Article 4 direction
Article 4 Basement Development Permitted Rights Removed. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Air quality management area: Westminster AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
23 listed buildings within 150 m
Nearest: 42-70, Gloucester Place W1, Grade II, 4 m away · 23 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 23 with distances
Historic England ↗
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
Also on the record
National infrastructure project 268 m away: London Strategic Heat Main Project, at pre-application; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square; Town centre 80 m away: Baker Street (part).
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

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

Floor area138 m² (1,485 sq ft)
Energy ratingD (56 out of 100), could reach C
PropertyMid-terrace house, 4 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

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 8BL
Received
29 Jan 2026
Validated
29 Jan 2026
Ward
Marylebone
Case officer
Show
Target decision
26 Mar 2026
Decision
Application Permitted
Decision date
5 May 2026
Decision level
Delegated Decision
Applicant
Show
Agent
JOHN FARQUHARSON PARTNERSHIP

How this decision compares

Decided in 96 days from validation, 41 days slower than Westminster's median of 55 for extensions. Approved, as 88% of extensions here are.

56%decided within 8 weeks
88%approved
1,937decided in the last year

Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →

Public comments

No public comments yet.

16 neighbours consulted · Last counted 3 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14663889
Planning Portal ref
PP-14663889
Comments by
29 Apr 2026
Site or press notice
28 Mar 2026
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
28 Dorset Street London W1U 8AR
Variation of Condition 1 of planning permission dated 22nd May 2024 (RN:23/07147/FULL) fo…
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2025
Flat 4 Second Floor 66 Gloucester Place London W1U 8HW
Internal alterations to the second and third floor duplex property with the inclusion of…
25/06554/LBC
2025 Approved
55 Baker Street London W1U 8EW
Request for a screening opinion under Regulation 6 of the Town and Country Planning (Envi…
25/04654/EIASCR
2025
55 Baker Street London W1U 8EW
Refurbishment of the building including demolition of Level 08 and construction of Level…
25/04398/FULL
2025 Approved
Flat 1 60 Gloucester Place London W1U 8HN
Installation of a plaster ceiling rose on the ground floor front room ceiling.
25/03936/LBC
2025
62 - 64 Baker Street London W1U 7DF
Display of internally illuminated LCD portrait screen outside 66 - 70 Baker Street measur…
25/04161/ADV
2025
62 - 64 Baker Street London W1U 7DF
Installation of an open access Communication Hub outside 66 - 70 Baker Street, following…
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2025
Accurist House 44 Baker Street London W1M 1DH
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25/01272/ADV
2025
Accurist House 44 Baker Street London W1M 1DH
Installation of an open access communication Hub, including the removal of an existing co…
25/01271/FULL
2025
75 Blandford Street City Of Westminster London W1U 8AD
Proposed single storey rear extension and provision for a roof terrace to an existing 5 b…
25/00087/FULL
2024
Flat 2 Ground Floor 66 Gloucester Place London W1U 8HW
Replacement of communal entrance lobby, living room door with a new FD60s door set.
24/07771/LBC
2024 Approved
Flat 4 Third Floor 106 Blandford Street W1U 8AG
Installation of secondary glazing to the existing windows at flat 4.
24/05738/LBC
2024
106 Blandford Street W1U 8AG
Joinery and plaster repairs, installation of new freestanding joinery post cabinet (fixed…
24/05115/LBC
2024
73 Blandford Street W1U 8AD
Erection of single storey ground floor extension to rear with extended terrace above at f…
24/04784/FULL
2024
Flat 2 Ground Floor 66 Gloucester Place London W1U 8HW
Internal alterations to the ground floor property with the inclusion of a new boiler flue…
24/04147/LBC
2024
Flat 2 Ground Floor 66 Gloucester Place London W1U 8HW
Internal alterations to the ground floor property with the inclusion of a new boiler flue…
24/04146/FULL
2023 Approved
28 Dorset Street London W1U 8AR
Use of office accommodation (Class E) to a single residential dwelling (Class C3) includi…
23/07147/FULL
2024
Flat 2 Ground Floor 66 Gloucester Place London W1U 8HW
Internal alterations and refurbishment. (Ground floor)
24/02091/LBC
2023 Approved
Baker Street London
Display of festive light decorations including 24 lamp post decorations along Baker Stree…
23/06614/ADV
2023 Approved
Ground Floor North West South Block 55 Baker Street London W1U 8EW
Installation of ATM through the window to the right of the central entrance doors and lob…
23/00496/FULL
2018 Approved
40-42 Baker Street London W1U 7AJ
Use of two areas of the public highway measuring 9.49m x 1.35m on Baker Street frontage a…
18/04069/TCH
2018 Approved
66 Baker Street London W1U 7DJ
Display of internally illuminated fascia sign measuring 0.5m x 2m x 0.02m, and internally…
18/05855/ADV
2018 Approved
27 Dorset Street London W1U 8AR
Variation of condition 1 of planning permission dated 22 December 2017 (RN: 17/09121/FULL…
18/04451/FULL
2018 Approved
65 Baker Street London W1U 8EW
Variation of Condition 4 of planning permission dated 29 April 2016 (RN: 16/03643/FULL) f…
18/04344/FULL
2017 Approved
62-64 Baker Street London W1U 7DF
Use of ground floor and part basement as a gym with juice and coffee bar (sui generis). I…
17/10950/FULL
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions

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.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

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.