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PermittedDC/26/143960Submitted 3 months agoLoft conversion

Lewisham

Application for a Lawful Development Certificate (proposed) submitted under Section 192 of the Town & Country Planning Act 1990 (as amended) Class A, Class B, and C of Schedule 2, Part 1 of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) for the construction of a roof extension in the rear roof slope incorporating Juliet balcony, installation of roof lights in the front roof slope, together with a single storey rear extension at 10 Knapdale Close SE23.

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Progress

Submitted
19 May 2026
— completed
Validated
19 May 2026
— completed
Consultation
— completed
Target date
— completed
Decided
13 Jul 2026
— completed

Application details

Reference
DC/26/143960
Local authority
Lewisham
Ward
Forest Hill
Application type
All Other
Property type
House

Key dates

Submitted
19 May 2026
Validated
19 May 2026
Decided
13 Jul 2026

Estimated project value

£63k–£130k

Based on the 52.0m² of floor area stated in the application, at UK average rates (2026). Source: Checkatrade 2026, loft conversion £1,200-£2,500/m².

Floor area gained: 52 · 2 additional bedrooms

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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