15 Sydenham Hill London Borough of Southwark SE26 6SH
Non-material amendment to planning permission 25/AP/3772 (Construction of single storey rear extension with patio and steps, basement extension to provide indoor swimming pool with terrace atop, south side extension to provide internal staircase to basement and three dormer windows to rear roof slope, remodelling and extension of existing annexe to north side of house, alterations to existing ground floor fenestration, and installation of new front boundary treatment.) The amendment seeks to remove the approved basement extension and reconfigure the terrace above; remove the approved south side (staircase) extension; replace the approved two side-facing windows within the existing annexe with a single high level window; remove Condition 11 (Basement Impact Assessment); and amend the description of development accordingly, to read as: Construction of single storey rear extension with patio, steps and extended terrace, three dormer windows to rear roof slope, remodelling and extension of existing annexe to north side of house, alterations to existing ground floor fenestration, and installation of new front boundary treatment.
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Progress
Application details
- Reference
- 26/AP/2548
- Local authority
- Southwark
- Postcode
- SE26 6SH
- Ward
- DUWO
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 9 Sept 2026
- Validated
- 9 Sept 2026
- Target decision
- 6 Oct 2026
- Decided
- 1 Oct 2026
Estimated project value
£37k–£100k
Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.
- FLAT 4, WOODSIDE VILLA, 11 SYDENHAM HILL, LONDON, SE26 6SHFlat or maisonette · Leasehold · £550,00017 months ago27 May 2025
- 15 SYDENHAM HILL, LONDON, SE26 6SHDetached · £2,700,0002 years ago20 Sept 2024
- FLAT 5, HYACINTH HOUSE, 13 SYDENHAM HILL, LONDON, SE26 6SHFlat or maisonette · Leasehold · £600,0002 years ago29 May 2024
- 35 SYDENHAM HILL, LONDON, SE26 6SHTerraced · £778,0002 years ago7 Feb 2024
- FLAT 6, HYACINTH HOUSE, 13 SYDENHAM HILL, LONDON, SE26 6SHFlat or maisonette · Leasehold · £600,0003 years ago1 Sept 2023
- FLAT 3, HYACINTH HOUSE, 13 SYDENHAM HILL, LONDON, SE26 6SHFlat or maisonette · Leasehold · £565,0003 years ago31 Mar 2023
- 33A SYDENHAM HILL, LONDON, SE26 6SHFlat or maisonette · Leasehold · £720,0003 years ago29 Mar 2023
- FLAT 2, HYACINTH HOUSE, 13 SYDENHAM HILL, LONDON, SE26 6SHFlat or maisonette · Leasehold · £442,5004 years ago13 Apr 2022
Homes here go for about £600,000 — the median of the last 8 market sales in SE26 6SH, £442,500 to £2,700,000.
Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.
Recorded changes
- 2 Oct 2026: Approved
- 30 Sept 2026: The proposal was amended
- 11 Sept 2026: The proposal was amended
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