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Permitted21/03380/FULL1Submitted 5 years agoRear extension

18A Thornsett Road Bromley Custodian Code SE20 7XE

Garage conversion; single storey rear extension

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Map of the site

Progress

Submitted
7 Jul 2021
— completed
Validated
7 Jul 2021
— completed
Consultation
23 Sept 2021
— completed
Target date
1 Sept 2021
— completed
Decided
25 Nov 2021
— completed

Application details

Reference
21/03380/FULL1
Local authority
Bromley
Postcode
SE20 7XE
Ward
CLOCK
Application type
All Other
Property type
House

Key dates

Submitted
7 Jul 2021
Validated
7 Jul 2021
Comments close
23 Sept 2021
Target decision
1 Sept 2021
Decided
25 Nov 2021

Estimated project value

£97k–£160k

Based on the 40.0m² 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: 40m²

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

Homes here go for about £700,000 — the median of the last 5 market sales in SE20 7XE, £450,000 to £1,085,000.

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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