Planning application
26/01145/P3JPA
Stone House 9 Weymouth Street London W1W 6DB
Proposal
Change of use of ground floor of 9 Weymouth Street, a Commercial, Business, Services (Use Class E) to Dwellinghouses (Use Class C3) Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) under Schedule 2, Part 3, Class MA (Commercial, business and service to dwelling houses).
As published by the council, reference 26/01145/P3JPA
Timeline
Dates from the published record
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24 Feb 2026
Received by Westminster
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17 Apr 2026
Decision issued: Prior Approval Approved
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21 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About prior approval applications
How this application type works
Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.
Nearby applications
Within 500 metres
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25/07758/ADLBC Awaiting decision
48 Portland Place London W1B 1NN
Detailed drawings at 1:10 with full size glazing bar sections of the new sash windows pursuant to condition 3 of listed building consent dated 29th April 2025 (RN:25/00294/LBC).
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25/07298/ADV Awaiting decision
Hallam Street London
Display of one non illuminated fascia sign measuring 0.375m x 1.015m located beneath Cavendish Mews North sign.
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25/08376/FULL Awaiting decision
52 Portland Place London W1B 1NH
Demolition, refurbishment, restoration and alterations to 52 Portland Place as well as removal of existing external condensers at basement, ground, third and fourth floor level and provision of new, consolidated plant and screening at basement and third floor level alongside other associated works. (Linked with 25/08377/LBC)
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25/08377/LBC Awaiting decision
52 Portland Place London W1B 1NH
Demolition, refurbishment, restoration and alterations to 52 Portland Place as well as removal of existing external condensers at basement, ground, third and fourth floor level and provision of new, consolidated plant and screening at basement and third floor level alongside other associated works. (Linked with 25/08376/FULL)
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26/00825/ADFULL Awaiting decision
Hallam House 56 - 60 Hallam Street London W1W 6JL
Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 4 of prior approval dated 11 March 2025 (RN: 25/00247/P3JPA).
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26/00826/ADFULL Awaiting decision
Hallam House 56 - 60 Hallam Street London W1W 6JL
Details of appropriate arrangements to secure measures to mitigate the potential increased demand for on-street residents car parking in the vicinity of the site pursuant to condition 18 of planning permission dated 19 November 2025 (RN: 25/04301/FULL).
Other prior approval applications
In Westminster
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26/04929/P3JPA Awaiting decision
8 - 10 Hallam Street London W1W 6JE
Application for Prior Approval under Class MA, Part 3 of Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the conversion of the existing office accommodation (Class E) to provide 6 residential dwellings.
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26/03606/DPAD Awaiting decision
6 Crompton Street London W2 1ND
Demolition of the main building down to the ground floor and retain and cap off the existing basement; demolition of external garages and the boundary walls retained; and new boundary wall or fencing.
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26/03580/P3JPA Awaiting decision
Leconfield House Curzon Street London W1J 5JA
Prior approval for change of use from commercial (Class E) to residential (Class 3) at Leconfield House, Curzon Street under Schedule 2, Part 3, Class MA (Commercial, business and service to dwelling houses).
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26/02098/P3JPA Awaiting decision
44 Ebury Mews East London SW1W 9QA
Notification for Prior Approval under Class MA, Part 3 of Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the conversion of the existing office accommodation (Class E) to provide one residential dwelling.
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26/02097/P3JPA Awaiting decision
40 - 42 Ebury Street London SW1W 0LU
Notification for Prior Approval under Class MA, Part 3 of Schedule 2 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the conversion of the existing office accommodation (Class E) to provide two residential dwellings.