House Extensions Pimlico SW1 2026: Complete Guide to Costs, Planning and Design
- LCCL Construction
- Jun 29
- 2 min read
Pimlico is one of Central London's most architecturally distinctive and sought-after residential neighbourhoods, characterised by Thomas Cubitt's magnificent mid-19th century stucco-fronted terraced houses arranged around communal garden squares. The SW1V and SW1W postcodes have some of the highest property values in Central London, making house extensions an outstanding investment for Pimlico homeowners. LCCL Construction delivers house extensions across Pimlico and all of Central London as part of our complete design and build service. We have direct experience of working in Pimlico having recently delivered a loft conversion project in SW1 — a client who found LCCL through our blog content and commented that our guides were more detailed than any competitor.
House Extensions Pimlico SW1: Best Types for Local Properties
Pimlico's mid-Victorian terraced houses suit rear extensions, side return extensions and wraparound extensions. Many Pimlico terraces have a side return alongside the rear ground floor — making a wraparound extension the outstanding choice for creating a wide open plan kitchen and dining space. Given the exceptional property values in SW1, even a single storey rear extension generates a return of 200 to 350 per cent.
How Much Do House Extensions Cost in Pimlico in 2026?
Rear extension: £45,000 to £80,000.
Side return: £45,000 to £80,000.
Wraparound: £78,000 to £128,000.
Double storey: £100,000 to £165,000.
All include full design and build. See our full house extension cost guide.
Planning Permission for House Extensions in Pimlico
Planning permission in Pimlico is among the most complex in London. Virtually the entire area falls within conservation areas — including the Pimlico Conservation Area and the Warwick Square Conservation Area — and the City of Westminster applies strict design guidelines. Planning permission is always required for most extensions in Pimlico. LCCL Construction manages all planning applications. See our guide to house extension planning permission in London.
How Much Value Does a House Extension Add in Pimlico?
Pimlico property values regularly achieve £1,200,000 to £4,000,000 for terraced houses. A wraparound extension costing £90,000 to £120,000 can add £250,000 to £500,000 in value — a return of 250 to 450 per cent. See our guide on how much value an extension adds in London.
Areas Around Pimlico We Cover
LCCL Construction covers Pimlico SW1V SW1W SW1P, Victoria SW1E SW1H, Belgravia SW1W SW1X, Chelsea SW3, Knightsbridge SW1X, Westminster SW1A, Vauxhall SW8, Battersea SW11, Kennington SE11 and all surrounding Central and South West London postcodes.
Frequently Asked Questions About House Extensions in Pimlico
How much does a house extension cost in Pimlico?
Costs range from £45,000 for a small rear extension to £165,000 for a large double storey. A typical wraparound costs £78,000 to £128,000 in Pimlico SW1.
Do I need planning permission for a house extension in Pimlico?
Yes — most extensions in Pimlico require planning permission due to conservation area coverage. LCCL Construction manages all applications.
To get a free consultation call LCCL Construction on 020 8037 7332 or get an instant quote online.
