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Permitted21/03747/FULL6Submitted 5 years agoLoft conversion

9 Thornsett Road Bromley Custodian Code SE20 7XB

Proposed ground floor infill rear extension and conservatory, two storey side extension to existing side addition, with rear dormer to main roof slope and provision of roof lights to front and rear

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Map of the site

Progress

Submitted
23 Jul 2021
— completed
Validated
23 Jul 2021
— completed
Consultation
—
— completed
Target date
17 Sept 2021
— completed
Decided
1 Oct 2021
— completed

Application details

Reference
21/03747/FULL6
Local authority
Bromley
Postcode
SE20 7XB
Ward
CLOCK
Application type
Householder
Property type
House

Key dates

Submitted
23 Jul 2021
Validated
23 Jul 2021
Target decision
17 Sept 2021
Decided
1 Oct 2021

Estimated project value

£52k–£110k

Based on the 32.0m² of floor area stated in the application, at inner London rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².

Floor area gained: 32m² · 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.

Homes here go for about £850,000 — the median of the last 5 market sales in SE20 7XB, £179,950 to £1,070,000.

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.

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