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S.K Singh
Need an Extension Builder in UB4? S.K Singh has been helping local clients (10 mile radius) with their extension buildering jobs for many years. Ge...
"New loft and side extension roof changing" - UB2, job posted 30/08/26
Vital Builders
Vital Builders are here to help customers who need an Extension Builder in UB4. We offer a competitive rate to complete all your extension builderi...
"New loft and side extension roof changing" - SOUTHALL, job posted 30/08/26
GMB BUILDING SERVICES
GMB BUILDING SERVICES is an established and experienced local extension builder in UB4. Please contact us for a free, no obligation quote and compe...
"Loft conversion" - SOUTHALL, job posted 03/11/25
DC Build & Pave
Trusted and professional extension builder in UB4. Experienced in all extension buildering work and keeping within budget and on quote. DC Build & ...
"We r a specialist for loft conversion extensions and renovations, we do electrical plumbing new builds house or garage landscaping my company name is JAPJI CONSTRUCTION LIMITED 1598 xxx )" - UB4, job posted 15/09/25
Matharu Buildings
Bill Matharu
Yeading, UB4
Matharu Buildings is an established extension buildering business in UB4. We come highly recommended and provide competitive quotes for your work.<...
"Side return extension" - SOUTHALL, job posted 10/02/25
T M Builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Mansard loft conversion" - HAYES, job posted 10/01/25
Greenline Construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"2 storey extension required" - SOUTHALL, job posted 08/10/24
SME Builders Network
Trusted and professional extension builder in UB4. Experienced in all extension buildering work and keeping within budget and on quote. SME Builder...
"Loft conversion in Greenford. Hip and gable seni detached property . Interested in quotes for the shell stage, 1st fix and second fix" - SOUTHALL, job posted 06/08/24
Ava Constructions & Decors Ltd
Need an Extension Builder in UB4? Ava Constructions & Decors Ltd has been helping local clients (10 mile radius) with their extension buildering jo...
"Loft conversion..Plus planning" - SOUTHALL, job posted 20/06/24
Gallant Contractors Ltd
Gallant Contractors have partnered with Homeowners, Designers and Architects to deliver unrivalled construction, renovation, double glazing and ref...
"8m Dormer Loft conversion with 2 bedrooms and 2 bathrooms. Let me have your email id and I will send drawings so that you can provide us with quote" - SOUTHALL, job posted 26/02/24
Ideal Construction
Yeading, UB4
Ideal Construction is an established extension buildering business in UB4. We come highly recommended and provide competitive quotes for your work....
"Loft conversion" - SOUTHALL, job posted 29/01/24
Kairon Construction
Experienced extension builder ready to quote for your work. Kairon Construction is the best extension builder in UB4. No obligation free quotes and...
"We can do everything nice and clean" - UB3, job posted 29/10/23
D.S Builders
D.S Builders is a trusted extension builder serving customers in UB4 and the surrounding area. Contact us to today to get a competitive quote for e...
"Loft conversion of a two bedroom flat at the end of the set of flats, to convert loft into a one bedroom flat, with 3 windows, bath,toilet and kitchen in UB 1 1PQ" - SOUTHALL, job posted 27/07/23
House Builders London
Need an Extension Builder in UB4? House Builders London has been helping local clients (10 mile radius) with their extension buildering jobs for ma...
"Loft conversion of a two bedroom flat at the end of the set of flats, to convert loft into a one bedroom flat, with 3 windows, bath,toilet and kitchen in UB 1 1PQ" - SOUTHALL, job posted 27/07/23
MJO CONSTRUCTION LIMITED
MJO CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in UB4. We offer a competitive rate to complete all your extensio...
Platinum Pearl Construction Ltd
Platinum Pearl Construction Ltd originated as a small general building services company over 10 years ago and have now grown into the multi-faceted...
Rays construction Ltd
Need an Extension Builder in UB4? Rays construction Ltd has been helping local clients (10 mile radius) with their extension buildering jobs for ma...
PRIME BUILDERS
Trusted and professional extension builder in UB4. Experienced in all extension buildering work and keeping within budget and on quote. PRIME BUILD...
Japji construction limited
Harpreet Singh
Hayes, UB4
Trusted and professional extension builder in UB4. Experienced in all extension buildering work and keeping within budget and on quote. Japji const...
BAL CONSTRUCTION
Trusted and professional extension builder in UB4. Experienced in all extension buildering work and keeping within budget and on quote. BAL CONSTRU...
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Local Extension Builders in London Boroughs
Job estimates from extension builders near you
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.
Build a timber frame extension - £26,192
Garden office - £10,192
Granny annexe - £87,192
Build a flat roof extension - £22,192
Convert a Garage - £16,192
Hip to gable loft conversion - £42,192
Convert a bungalow loft - £29,192
Build a dormer loft conversion - £42,192
Build a swimming pool - £81,192
Build a Mansard loft conversion - £52,192
Concrete foundations - £6,442
Underpin a building - £17,692
Two storey extension - £88,288
Convert a basement - £39,660
Side return extension - £43,660
Loft conversion - £35,550
Garage - £18,692
Single storey extension - £58,840
Outbuilding - £10,192
Install an RSJ - £2,392
Build a kitchen extension - £42,192
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