Planning application
17 - 21 South Audley Street London W1K 2NY
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Relates to 26/03942/FULL
Decided. The decision notice on the council portal carries the outcome in full, including any conditions.
Proposal
Alteration and extension of existing buildings including removal of one single storey extensions and one part single and part two storey extension, erection of infill extensions at first to third floor levels, a replacement part single storey and part three storey side extension adjoining Mount Street Garden and a replacement single storey extension fronting onto South Street, creation of terraces at first floor level within a central greened courtyard, installation of plant and associated external alterations. Installation of lightning protection, satellite dishes and tv aerial replacement of roof coverings including battens, sarking boards and installation of insultation, ventilation, ply sheathing and other associated work the removal and rebuilding of a leaning chimney stack and associated structural work to existing roof. Internal alterations throughout [Site includes 22 South Audley Street, 35 South Street and 35A South Street]. (Linked with 26/03942/FULL)
As published by the council, reference 26/03883/LBC
Application record
- Reference
- 26/03883/LBC
- Category
- Heritage and listed buildings
- Status
- Decided
- Received
- 12 Jun 2026
- Validated
- 16 Jun 2026
- Ward
- West End
- Postcode
- W1K 2NY
Site history
Applications at this address on the Westminster register
This site has had 87 applications since 2023: 13 approved, 0 refused.
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26/07367/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Details of new coordinated service routes pursuant to condition 6 (6) of listed building consent dated 14 March 2023 (RN: 22/05005/LBC)
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26/07217/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Detailed drawings with method statements of the new stairs, banisters and handrails and or associated junctions pursuant to condition 6.11 of listed building dated 14th March 2023 (RN:22/05005/LBC)
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26/07200/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Detailed drawings with method statements where indicated; of the new and retained floor, ceiling and wall construction and coverings with detailed build ups and locations proposed impact on existing historic fabric e.g. joists, floor construction pursuant to condition 6 (2) of listed building dated 14th March 2023 (RN:22/05005/LBC)
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26/07142/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Details of new coordinated services routes generally, showing distribution and proposed impact on existing historic fabric purusant to Condition 6.6 of Listed Building Consent dated 22/05005/LBC (RN:22/05005/LBC)
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26/06825/ADFULL Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Detailed drawings (scale 1:20 and 1:5) with method statements where indicated; of the new coordinated service routes generally, showing distribution and proposed impact on existing historic fabric e.g. joists, floor construction, ventilation, wall and ceilings pursuant to Condition 6 (6) of planning permission dated 14th March 2023 (RN:22/05005/LBC)
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26/06447/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Details of reflected ceiling plans pursuant to condition 6 (part 10) of listed building consent dated 14 March 2023 (RN: 22/05005/LBC)
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26/06405/ADLBC Decided
17 - 21 South Audley Street London W1K 2NY
Details of new secondary glazing showing each window type, location, key details and relationship to the existing window and existing historic fabric pursuant to discharge of condtion 6 (part 5) of listed building consent dated 27th September 2023 (RN: 22/05005/LBC).
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26/06322/ADLBC Decided
17 - 21 South Audley Street London W1K 2NY
Detailed drawings (scale 1:20 and 1:5) with method statements where indicated; of the new stairs, banisters and handrails and or associated junctions pursuant to condition 6 (part 11) of listed building dated 14th March 2023 (RN: 22/05005/LBC)
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26/06159/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Details of new and retained floor, ceiling and wall construction and coverings; reflected ceiling plans; existing wall paintings, cornices and new skirting and cornices pursuant to condition 6 (parts 2,10,12, and 13) of listed building consent dated 14 March 2023 (RN: 22/05005/LBC).
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26/06145/ADLBC Awaiting decision
17 - 21 South Audley Street London W1K 2NY
Details of detailed existing and proposed elevation drawings pursuant to condition 13 of listed building dated 14th March 2023 (RN: 22/05005/LBC)
Timeline
Dates from the published record
-
12 Jun 2026
Received by Westminster
-
16 Jun 2026
Validated
Checked as complete and ready for consideration.
-
21 Jul 2026
Added to PlanIndex
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2 Nov 2026
Status changed to Decided
Previously Pending.
Related applications
Cases linked to this one on the register
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26/03942/FULL Decided
17 - 21 South Audley Street London W1K 2NY
Variation of Condition 1 of planning permission dated 13th March 2026 (RN: 25/03446/FULL) for 'Alteration and extension of existing buildings including removal of one single storey extensions and one part single and part two storey extension, erection of infill extensions at first to third floor levels, a replacement part single storey and part three storey side extension adjoining Mount Street Garden and a replacement single store extension fronting onto South Street, use of part lower ground and part ground floor levels as an art gallery with ancillary storage and office accommodation (Class E), use of part basement/lower ground , part ground floor and first to fourth floor levels to aparthotel to provide 10 visitor accommodation units (Class C1) with ancillary facilities at ground and lower ground floor level, including communal lounge/library at ground floor level, use of ground to third floor of no.35A South Street, first and second floors of no.35 South Street and first to fourth floor of no. 17 South Audley Street as six residential units (Class C3), creation of terraces at first floor level within a central greened courtyard, installation of plant and associated external alterations'. NAMELY, minor changes to approved extension roof and courtyard heights by way of changes to build ups, alteration to part of roof to accommodate Stair 09 headroom, alteration of roof 07 to remove rooflights revisions to plant layout and screening, change to material of loading bay roof, introduction of automatic opening vents and roof access strategy, alteration of dormers, addition of roof drainage, installation of airbricks and internal layout changes. (Linked with 26/03883/LBC) (Application under Section 73 of the Act).
1 later application on the register refers to this one:
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26/03942/FULL Decided
17 - 21 South Audley Street London W1K 2NY
Variation of Condition 1 of planning permission dated 13th March 2026 (RN: 25/03446/FULL) for 'Alteration and extension of existing buildings including removal of one single storey extensions and one part single and part two storey extension, erection of infill extensions at first to third floor levels, a replacement part single storey and part three storey side extension adjoining Mount Street Garden and a replacement single store extension fronting onto South Street, use of part lower ground and part ground floor levels as an art gallery with ancillary storage and office accommodation (Class E), use of part basement/lower ground , part ground floor and first to fourth floor levels to aparthotel to provide 10 visitor accommodation units (Class C1) with ancillary facilities at ground and lower ground floor level, including communal lounge/library at ground floor level, use of ground to third floor of no.35A South Street, first and second floors of no.35 South Street and first to fourth floor of no. 17 South Audley Street as six residential units (Class C3), creation of terraces at first floor level within a central greened courtyard, installation of plant and associated external alterations'. NAMELY, minor changes to approved extension roof and courtyard heights by way of changes to build ups, alteration to part of roof to accommodate Stair 09 headroom, alteration of roof 07 to remove rooflights revisions to plant layout and screening, change to material of loading bay roof, introduction of automatic opening vents and roof access strategy, alteration of dormers, addition of roof drainage, installation of airbricks and internal layout changes. (Linked with 26/03883/LBC) (Application under Section 73 of the Act).
Documents
Plans, drawings, consultee responses and the officer's report
111 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.
Watch members (£5 a month) open the document list from here.
Open the documentsAfter the decision
Westminster has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.
About heritage and listed building applications
Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
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17 - 21 South Audley Street London W1K 2NY
89% historically approved · decision due ~19 Oct
Details of new external doors each type showing location and given key details with adjacent fabric pursuant to Condition 5.4 of listed building consent dated 14th March 2023 (RN:22/05005/LBC).
Decided -
17 - 21 South Audley Street London W1K 2NY
89% historically approved · decision due ~18 Aug
Detailed drawings at 1:10 of the reconstructed dormer on the west elevation pursuant to condition 2 (A) of listed building dated 30th April 2026 (RN:26/01378/LBC)
Decided Loft or dormer -
17 - 21 South Audley Street London W1K 2NY
89% historically approved · decision due ~14 Dec
Details of new coordinated services routes generally, showing distribution and proposed impact on existing historic fabric purusant to Condition 6.6 of Listed Building Consent dated 22/05005/LBC (RN:22/05005/LBC)
Awaiting decision -
17 - 21 South Audley Street London W1K 2NY
89% historically approved · decision due ~16 Nov
Details of reflected ceiling plans pursuant to condition 6 (part 10) of listed building consent dated 14 March 2023 (RN: 22/05005/LBC)
Awaiting decision -
17 - 21 South Audley Street London W1K 2NY
89% historically approved · decision due ~18 Aug
Detailed drawings at 1:10 of the reconstructed dormer on the west elevation pursuant to condition 12 (A) of planning permission dated 30th April 2026 (RN:26/01377/FULL)
Decided Loft or dormer -
17 - 21 South Audley Street London W1K 2NY
89% historically approved · decision due ~15 Sep
Details of existing retained and relocated door schedule pursuant to condition 6.1 (b) of listed building consent dated 14 March 2023 (RN:22/05005/LBC)
Decided
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