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Permitted24/AP/1383Submitted 2 years agoLoft conversion

12 Blackwater Street London Borough of Southwark SE22 8RS

Lawful Development Certificate (Proposed) for construction of a rear dormer loft extension and addition of roof windows to the front roof slope.

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Progress

Submitted
4 Jun 2024
— completed
Validated
4 Jun 2024
— completed
Consultation
—
— completed
Target date
29 Jul 2024
— completed
Decided
15 Jul 2024
— completed

Application details

Reference
24/AP/1383
Local authority
Southwark
Postcode
SE22 8RS
Ward
GOGR
Application type
All Other
Property type
House

Key dates

Submitted
4 Jun 2024
Validated
4 Jun 2024
Target decision
29 Jul 2024
Decided
15 Jul 2024

Estimated project value

£47k–£98k

Based on the 29.0m² 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: 29m² · 1 additional bedrooms

Recently sold nearby

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

Homes here go for about £609,000 — the median of the last 8 market sales in SE22 8RS, £400,000 to £1,450,000.

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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