House Extensions Fulham SW6 2026: Complete Guide to Costs, Planning and Design
Fulham is one of South West London's most desirable and active areas for house extensions. The SW6 postcode is characterised by large Victorian and Edwardian terraced houses on quiet residential streets, excellent transport links to central London and property values that consistently rank among the highest in South West London. The combination of large properties, premium values and family-oriented buyers makes Fulham one of the strongest markets for house extensions in London. LCCL Construction delivers house extensions across Fulham and all of South West London as part of our complete design and build service.
House Extensions Fulham SW6: Best Types for Local Properties
The large Victorian and Edwardian terraced houses that dominate Fulham's residential streets are ideally suited to side return extensions, wraparound extensions and double storey rear extensions. The side return — the narrow alley that runs alongside many Fulham terraces — is one of the most valuable spaces to build into, creating a wider kitchen and dining area that transforms the ground floor. Double storey rear extensions are popular for larger Fulham families wanting maximum space across both floors.
How Much Do House Extensions Cost in Fulham in 2026?
House extension costs in Fulham are broadly in line with premium South West London averages.
Rear extension: £40,000 to £75,000.
Side return extension: £40,000 to £75,000.
Wraparound extension: £70,000 to £115,000.
Double storey rear extension: £95,000 to £155,000.
All costs include architectural design, planning permission, building regulations, structural calculations, party wall agreements, construction, electrics, plumbing, plastering and decoration. See our full house extension cost guide.
Planning Permission for House Extensions in Fulham
Most single storey rear extensions in Fulham fall within permitted development rights and do not require planning permission. However Fulham has several conservation areas including the Eel Brook Common Conservation Area and the Crabtree Conservation Area where planning permission is required for extensions. Side return and wraparound extensions typically require planning permission because the side element exceeds permitted development limits. LCCL Construction checks all planning requirements as part of the free consultation. See our full guide to house extension planning permission in London.
How Much Value Does a House Extension Add in Fulham?
A well-executed wraparound extension in Fulham typically adds £150,000 to £280,000 to the value of a Victorian terraced house — a return of 150 to 300 per cent on the construction cost. The open plan kitchen diner created by a side return or wraparound extension is the single most valued improvement by buyers in the Fulham market. See our guide on how much value a house extension adds in London.
Areas of Fulham and SW6 We Cover
LCCL Construction covers all areas of Fulham and surrounding South West London including Fulham SW6, Parsons Green SW6, Walham Green SW6, Sands End SW6, Barons Court W14, West Kensington W14, Hammersmith W6, Putney SW15, Wandsworth SW18, Chelsea SW3 SW10, Clapham SW4 SW11 and all surrounding postcodes.
Frequently Asked Questions About House Extensions in Fulham
How much does a house extension cost in Fulham?
Costs range from £40,000 for a small single storey rear extension to £155,000 for a large double storey extension with premium finishes. A typical wraparound extension costs £70,000 to £115,000.
What is the best extension type for a Fulham Victorian terrace?
A wraparound extension combining rear and side return is usually the highest-value option, creating a large open plan ground floor. A side return extension alone is a cost-effective alternative from £40,000.
To get a free consultation and estimate call LCCL Construction on 020 8037 7332 or get an instant quote online.
