11 Calton Avenue London Borough of Southwark SE21 7DE
Erection of a single-storey side extension following demolition of the existing side extension.
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Progress
Application details
- Reference
- 26/AP/2230
- Local authority
- Southwark
- Postcode
- SE21 7DE
- Ward
- DUVI
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 30 Jul 2026
- Validated
- 30 Jul 2026
- Target decision
- 23 Sept 2026
Estimated project value
£7k–£12k
Based on the 3.0m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².
Floor area gained: 3m²
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.
- 17 CALTON AVENUE, LONDON, SE21 7DETerraced · £1,500,00014 months ago7 Jul 2025
- 23 CALTON AVENUE, LONDON, SE21 7DETerraced · Not a standard market sale · £1,480,00022 months ago18 Oct 2024
- 5 CALTON AVENUE, LONDON, SE21 7DEDetached · New build · £2,250,0002 years ago21 Jun 2024
- 17 CALTON AVENUE, LONDON, SE21 7DETerraced · £1,345,0004 years ago7 Jan 2022
- 7 CALTON AVENUE, LONDON, SE21 7DESemi-detached · £1,125,0004 years ago17 Dec 2021
- 17 CALTON AVENUE, LONDON, SE21 7DETerraced · £1,295,0006 years ago9 Dec 2019
- 11 CALTON AVENUE, LONDON, SE21 7DETerraced · £1,025,0006 years ago29 Nov 2019
- 23 CALTON AVENUE, LONDON, SE21 7DETerraced · £1,115,0007 years ago26 Jul 2019
Homes here go for about £1,295,000 — the median of the last 7 market sales in SE21 7DE, £1,025,000 to £2,250,000.
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.
Nearby applications
- 11 Calton Avenue London Borough of Southwark SE21 7DEPermittedNext door
- 11 Calton Avenue London Borough of Southwark SE21 7DEPermittedNext door
- 9 Calton Avenue London Borough of Southwark SE21 7DEPermittedNext door
- 53 Gilkes Crescent London Borough of Southwark SE21 7BPPermittedNext door
- London Borough of SouthwarkPermittedAdjoining
- London Borough of SouthwarkPermittedAdjoining