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Permitted21/AP/1830Submitted 5 years agoLoft conversion

17 Rosenthorpe Road London Borough of Southwark SE15 3EG

Construction of an L-shaped rear dormer extension with raised ridge line.

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Progress

Submitted
26 May 2021
— completed
Validated
26 May 2021
— completed
Consultation
— completed
Target date
20 Jul 2021
— completed
Decided
19 Jul 2021
— completed

Application details

Reference
21/AP/1830
Local authority
Southwark
Postcode
SE15 3EG
Ward
PERY
Application type
Householder
Property type
House

Key dates

Submitted
26 May 2021
Validated
26 May 2021
Target decision
20 Jul 2021
Decided
19 Jul 2021

Estimated project value

£64k–£130k

Based on the 39.2m² 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: 39.2 · 2 additional bedrooms

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.

Homes here go for about £1,190,000 — the median of the last 8 market sales in SE15 3EG, £575,000 to £1,300,000.

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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