21 THORNTON ROAD Merton SW19 4NG
ERECTION OF A SINGLE STOREY EXTENSION.
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Progress
Application details
- Reference
- 26/HOUSE/0187
- Local authority
- Merton
- Postcode
- SW19 4NG
- Ward
- Hillside
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 1 Jun 2026
- Validated
- 1 Jun 2026
- Comments close
- 13 Jul 2026
- Target decision
- 27 Jul 2026
- Decided
- 2 Oct 2026
Estimated project value
£59k–£97k
Based on the 24.0m² 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: 24m² · 1 additional bedrooms
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.
- 23 THORNTON ROAD, LONDON, SW19 4NGTerraced · £1,225,0004 months ago25 Jun 2026
- 21 THORNTON ROAD, LONDON, SW19 4NGDetached · Not a standard market sale · £1,450,00011 months ago28 Oct 2025
- 28 THORNTON ROAD, LONDON, SW19 4NGSemi-detached · £2,250,00018 months ago17 Apr 2025
- 16 THORNTON ROAD, LONDON, SW19 4NGTerraced · £730,0002 years ago25 Jun 2024
- 18B THORNTON ROAD, LONDON, SW19 4NGTerraced · £770,0002 years ago2 Feb 2024
- 18 THORNTON ROAD, LONDON, SW19 4NGTerraced · £530,0003 years ago18 Apr 2023
- 20 THORNTON ROAD, LONDON, SW19 4NGTerraced · £1,200,0003 years ago1 Mar 2023
- 27 THORNTON ROAD, LONDON, SW19 4NGOther · Not a standard market sale · £1,060,0003 years ago25 Nov 2022
Homes here go for about £985,000 — the median of the last 6 market sales in SW19 4NG, £530,000 to £2,250,000.
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.
Recorded changes
- 7 Oct 2026: Approved
- 7 Oct 2026: Now a rear extension (was a loft conversion)
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