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Permitted26/AP/1143Submitted 4 months agoTwo-storey extension

7 Alleyn Crescent London Borough of Southwark SE21 8BN

Construction of a two-storey side extension; replacement of front boundary timber wall to brick; inclusion of bin store and installation of a ground floor side facing window

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Progress

Submitted
28 Apr 2026
— completed
Validated
28 Apr 2026
— completed
Consultation
29 May 2026
— completed
Target date
22 Jun 2026
— completed
Decided
16 Jun 2026
— completed

Application details

Reference
26/AP/1143
Local authority
Southwark
Postcode
SE21 8BN
Ward
DUWO
Application type
Householder
Property type
House

Key dates

Submitted
28 Apr 2026
Validated
28 Apr 2026
Comments close
29 May 2026
Target decision
22 Jun 2026
Decided
16 Jun 2026

Estimated project value

£135k–£190k

Based on the 50.0m² of floor area stated in the application, at inner London rates (2026). Source: FMB / Checkatrade 2026, two-storey extension £2,000-£2,800/m².

Floor area gained: 50 · 1 additional bedrooms

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 2 recent sales are listed below.

Homes here go for about £892,500 — the median of the last 8 market sales in SE21 8BN, £760,000 to £1,145,000.

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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