18 Watson Avenue Sutton SM3 9RE
Prior Approval for a single storey rear extension projecting from the rear of the original house by 5m.
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Progress
Application details
- Reference
- DM2026/00946
- Local authority
- Sutton
- Postcode
- SM3 9RE
- Ward
- Stonecot
- Application type
- Prior Approval
- Property type
- House
Key dates
- Submitted
- 7 Aug 2026
- Validated
- 7 Aug 2026
- Target decision
- 18 Sept 2026
Estimated project value
£54k–£90k
Based on the 24.0m² of floor area stated in the application, at outer London rates (2026). Source: FMB / Checkatrade 2026, single-storey extension £1,800-£3,000/m².
Floor area gained: 24m²
Recently sold nearby
New owners, recently moved in. First work on a house usually follows within months of completing. 3 recent sales are listed below.
- 18 WATSON AVENUE, SUTTON, SM3 9RESemi-detached · £553,0003 months ago29 May 2026
- 28 WATSON AVENUE, SUTTON, SM3 9RETerraced · £550,0004 months ago30 Apr 2026
- 22 WATSON AVENUE, SUTTON, SM3 9RESemi-detached · £554,5004 months ago24 Apr 2026
- 19 WATSON AVENUE, SUTTON, SM3 9RESemi-detached · £745,0002 years ago18 Dec 2023
- 1 WATSON AVENUE, SUTTON, SM3 9RESemi-detached · £565,0003 years ago28 Apr 2023
- 20 WATSON AVENUE, SUTTON, SM3 9RETerraced · £610,0004 years ago26 Jan 2022
- 19 WATSON AVENUE, SUTTON, SM3 9RESemi-detached · £437,0005 years ago24 May 2021
- 5 WATSON AVENUE, SUTTON, SM3 9RESemi-detached · £517,8005 years ago18 Dec 2020
Homes here go for about £553,750 — the median of the last 8 market sales in SM3 9RE, £437,000 to £745,000.
Contains HM Land Registry data © Crown copyright and database right 2026. 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
- 26 Watson Avenue London Borough of Sutton SM3 9REPermittedAdjoining
- London Borough of Sutton SM3 9REPermittedAdjoining
- London Borough of Sutton SM3 9REPermittedAdjoining
- London Borough of Sutton SM3 9EAPermittedAdjoining
- 6 Watson Avenue London Borough of Sutton SM3 9REPermittedAdjoining
- 19 Watson Avenue London Borough of Sutton SM3 9REPermitted52 yd