299 Cannon Hill Lane Merton SW20 9HQ
ERECTION OF A SINGLE STOREY REAR EXTENSION; FIRST FLOOR SIDE EXTENSION; HIP TO GABLE ROOF CONVERSION, WITH RIDGE EXTENDING OVER THE PROPOSED FIRST FLOOR ADDITION; REAR DORMER EXTENSION; INSTALLATION OF 2X ROOFLIGHTS ON THE FRONT ROOFSLOPE AND 1X FOLD-OUT ROOF BALCONY ROOFLIGHT; 1X NEW WINDOW ON SIDE (NORTH) ELEVATION.
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Progress
Application details
- Reference
- 21/P2525
- Local authority
- Merton
- Postcode
- SW20 9HQ
- Ward
- Cannon Hill_historic
- Application type
- Householder
- Property type
- House
Key dates
- Submitted
- 5 Jul 2021
- Validated
- 5 Jul 2021
- Comments close
- 18 Aug 2021
- Target decision
- 30 Aug 2021
- Decided
- 27 Aug 2021
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
New owners, recently moved in. First work on a house usually follows within months of completing. 2 recent sales are listed below.
- 361 CANNON HILL LANE, LONDON, SW20 9HQTerraced · £625,000last month15 Jul 2026
- 329 CANNON HILL LANE, LONDON, SW20 9HQOther · Not a standard market sale · £967,10021 months ago9 Dec 2024
- 369 CANNON HILL LANE, LONDON, SW20 9HQTerraced · £550,0002 years ago24 May 2024
- 339 CANNON HILL LANE, LONDON, SW20 9HQTerraced · Not a standard market sale · £925,0003 years ago2 Feb 2023
- 325 CANNON HILL LANE, LONDON, SW20 9HQSemi-detached · £805,0004 years ago29 Jul 2022
- 357 CANNON HILL LANE, LONDON, SW20 9HQTerraced · £675,0005 years ago5 Oct 2020
- 299 CANNON HILL LANE, LONDON, SW20 9HQSemi-detached · £825,0006 years ago8 Nov 2019
- 309 CANNON HILL LANE, LONDON, SW20 9HQSemi-detached · £700,0007 years ago31 Oct 2018
Homes here go for about £687,500 — the median of the last 6 market sales in SW20 9HQ, £550,000 to £825,000.
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
- 299 Cannon Hill Lane Merton SW20 9HQRefusedNext door
- 299 Cannon Hill Lane Merton SW20 9HQPermittedNext door
- 299 Cannon Hill Lane Merton SW20 9HQPermittedNext door
- 293 Cannon Hill Lane Merton SW20 9DBPermittedAdjoining
- 94 The Green Merton SM4 4HLPermitted45 yd
- 309 Cannon Hill Lane Merton SW20 9HQPermitted49 yd