18 Glenthorne Gardens London Borough of Sutton SM3 9NL
Erection of a single storey detached outbuilding to rear garden for use as a granny annexe associated with the main house.
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Progress
Application details
- Reference
- DM2021/00528
- Local authority
- Sutton
- Postcode
- SM3 9NL
- Ward
- A03
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 16 Mar 2021
- Validated
- 16 Mar 2021
- Target decision
- 11 May 2021
- Decided
- 5 May 2021
Estimated project value
£93k–£155k
Based on the 41.0m² of floor area stated in the application, at outer London rates (2026). Source: trade estimate, annexe £1,800-£3,000/m².
Floor area gained: 41m² · 1 additional bedrooms
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.
- 31 GLENTHORNE GARDENS, SUTTON, SM3 9NLSemi-detached · Not a standard market sale · £482,00012 months ago14 Aug 2025
- 17 GLENTHORNE GARDENS, SUTTON, SM3 9NLTerraced · £670,0002 years ago29 Jan 2024
- 20 GLENTHORNE GARDENS, SUTTON, SM3 9NLDetached · £850,0003 years ago3 May 2023
- ASHDOWN GLENTHORNE GARDENS, SUTTON, SM3 9NLSemi-detached · £610,0003 years ago15 Nov 2022
- 11 GLENTHORNE GARDENS, SUTTON, SM3 9NLSemi-detached · Not a standard market sale · £570,0003 years ago5 Oct 2022
- 6 GLENTHORNE GARDENS, SUTTON, SM3 9NLSemi-detached · £525,0004 years ago24 Sept 2021
- 19 GLENTHORNE GARDENS, SUTTON, SM3 9NLTerraced · £660,0005 years ago19 Aug 2021
- 13 GLENTHORNE GARDENS, SUTTON, SM3 9NLSemi-detached · £535,4505 years ago25 Mar 2021
Homes here go for about £635,000 — the median of the last 6 market sales in SM3 9NL, £525,000 to £850,000.
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.
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