Six-flat extension and basement at St. Johns House, Kensington, London W11
Summary of planning committee decision
Decided by Kensington And Chelsea Planning Applications Committee on 16 Apr 2026.
What is proposed
The application proposes extensions, a mansard roof, a basement, boundary wall works and internal reorganisation of six existing flats.
“4.The proposal and any relevant planning history 4.1 Planning permission is sought for: - An extension to north-eastern corner of the building; - Addition of mansard roof extension; - Excavation of basement under footprint of the building but also under part of the front and rear garden areas (with associated underground swimming pool and plant equipment areas); - Restoration/rebuilding of boundary walls; - External alterations to all elevations and internal alterations…”
Officer report
Earlier permissions
An earlier scheme was refused and later allowed on appeal, with subsequent permissions altering the mansard roof and confirming lawful implementation.
“4.5The relevant planning history is set out below: ReferenceDescription Decision PP/19/06989 Full height extension to north east corner of building, addition of a mansard roof extension, excavation of basement under footprint and part of rear courtyard, extension of lower ground floor under front garden, introduction of an entrance to eastern facade and alterations to entrance on St John's Gardens, external alterations to all elevations and internal alterations in…”
“PP/19/06989 allowed under appeal ref: APP/K5600/W/20/3251026 to raise the mansard roof to improve the internal floor to ceiling height and to create an increase in internal space for the fourth floor flat. Granted 17th July 2023 CL/23/08480 Confirmation that the implementation of works approved under ref. PP/23/03308 dated 17th July 2023, is lawful. Granted issued 01st March 2024”
Officer report
Consultation responses
Consultees raised no objection or considered the scheme acceptable subject to conditions covering archaeology, transport, noise, contamination, design and trees.
“No objection is therefore raised in the event of it being supported subject to imposition of a similar pre commencement condition so as to secure the submission of an archaeological watching brief prior to works taking place.”
“Conservation and Design Officer Revised scheme now acceptable subject to conditions. Paras 6.20 to 6.32 Arboricultural Officer No objection subject to conditions. Para 6.8 Planning Policy Submitted Viability Statement needs to be subject to robust review by independent assessors. Paras 6.10 to 6.19 9.”
Officer report
Speakers
No speakers addressed the committee.
Decision
The committee unanimously granted planning permission with the listed conditions and delegated completion of the Section 106 agreement.
“Resolved unanimously: to grant planning permission with the conditions listed in Section 9 of the report and to delegate authority to the Director of Planning and Place to finalise the drafting of a legal agreement under Section 106 of the Town and Country Planning Act 1990 (as amended) based on the Heads of Terms identified at Section 7 of this report and ikkthe conditions listed in Section 9 of the report.”
Minutes
Councillors at the meeting
- James HusbandChairConservativeFor
- Hamish AdourianConservativeFor
- Mohammed BakhtiarLabourFor
- Gerard HargreavesConservativeFor
- Will LaneConservativeFor
From a unanimous vote of the 5 members present for this item.
Source: Plota analysis of the council's minutes; parties from the council's list of councillors.
Sources
- Kensington And Chelsea Planning Applications Committee minutes, 16 April 2026
- Agenda and papers (council website)
Source: Plota analysis of Kensington And Chelsea's committee minutes and officer report. Quotations are the council's own words; headings and summaries are Plota's.
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See the API →At the meeting
- Council
- Kensington And Chelsea
- Date
- Thursday 16 April 2026
- Recommendation
- Officers recommended approval
- Committee decided
- Approved
- Vote
- Unanimous
- Councillors
- 5Conservative 4Labour 1Show votes
- Public speakers
- None
- Minutes
- The council's minutes
- Meeting
- Agenda and papers (council website)
- Application
- View application →
- All decisions
- Kensington And Chelsea committee decisions →
This committee's year
109 decisions in the 12 months to this meeting, 7 against officer advice.
Source: Plota analysis of the committee's minutes.