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Refused25/02293/FULSubmitted over a year agoLoft conversion

Trouville Road Lambeth SW4 8QL

This proposal relates to the second-floor flat at 28 Trouville Road, a converted mid-terrace residential property. The building already features a rear-facing dormer at the main roof level. The applicant proposes to construct a new rear mansard dormer extension, designed to connect with the existing main dormer, but set significantly below it to ensure visual subordination and design harmony. The new dormer will have a mansard roof form with a 70-degree pitch, in accordance with Lambeth’s design guidance, and will be finished in matching tiles to retain visual continuity with the host roof. Two side windows will be incorporated into the dormer, and these can be obscured up to 1.7 metres to preserve neighbouring amenity and privacy. The extension will create approximately 10.13 square metres of internal floorspace, to be used as a home study by the occupant. The works will not alter the footprint of the building and will respect the external fabric and character of the host property.

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Progress

Submitted
13 Aug 2025
— completed
Validated
13 Aug 2025
— completed
Consultation
19 Sept 2025
— completed
Target date
8 Oct 2025
— completed
Decided
8 Oct 2025
— completed

Application details

Reference
25/02293/FUL
Local authority
Lambeth
Postcode
SW4 8QL
Ward
CLCOMM
Application type
All Other
Property type
Flat

Key dates

Submitted
13 Aug 2025
Validated
13 Aug 2025
Comments close
19 Sept 2025
Target decision
8 Oct 2025
Decided
8 Oct 2025

Estimated project value

£17k–£34k

Based on the 10.1m² 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: 10.13

Recently sold nearby

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

Homes here go for about £882,500 — the median of the last 8 market sales in SW4 8QL, £530,000 to £1,342,500.

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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