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T M Builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"New loft and side extension roof changing" - SOUTHALL, job posted 30/08/26
Mario Prajar Building Services
Mario Prajar Building Services is an established and experienced local extension builder in Northolt. Please contact us for a free, no obligation q...
"Kitchen extension" - UB6, job posted 15/05/26
Vital Builders
Vital Builders are here to help customers who need an Extension Builder in Northolt. We offer a competitive rate to complete all your extension bui...
"I am seeking an estimate for a loft conversion. This should include structural design. Hip to gable dormer, with a toilet and sink." - UB5, job posted 01/04/26
C T Edwards
Relax... you have found a reliable extension builder in Northolt. C T Edwards is a friendly and reliable company based in Northolt who consider no ...
"Garage" - PERIVALE, job posted 14/01/26
J K GENERAL BUILDING LTD
Need to find an Extension Builder near you for all your extension buildering work?
J K GENERAL BUILDING LTD provides a local, trusted exten...
"Loft conversion" - SOUTHALL, job posted 03/11/25
MJ Builders (London) Ltd
Hardeep Samra
MJ Builders (London) Ltd are here to help customers who need an Extension Builder in Northolt. We offer a competitive rate to complete all your ext...
"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
DC Build & Pave
Trusted and professional extension builder in Northolt. Experienced in all extension buildering work and keeping within budget and on quote. DC Bui...
"Outbuilding" - HA4, job posted 11/03/25
Matharu Buildings
Bill Matharu
Matharu Buildings is an established extension buildering business in Northolt. We come highly recommended and provide competitive quotes for your w...
"Side return extension" - SOUTHALL, job posted 10/02/25
Mamma V's Caribbean and English Cuisine
UK Food
Need to find an Extension Builder near you for all your extension buildering work?
Mamma V's Caribbean and English Cuisine provides a local...
"Single storey extension 20sqm" - UB6, job posted 09/11/24
S.K Singh
Need an Extension Builder in Northolt? S.K Singh has been helping local clients (10 mile radius) with their extension buildering jobs for many year...
"2 storey extension required" - SOUTHALL, job posted 08/10/24
House Builders London
Need an Extension Builder in Northolt? House Builders London has been helping local clients (10 mile radius) with their extension buildering jobs f...
"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
ART DESIGN INTERIORS UK LTD
Experienced extension builder ready to quote for your work. ART DESIGN INTERIORS UK LTD is the best extension builder in Northolt. No obligation fr...
"Loft conversion..Plus planning" - SOUTHALL, job posted 20/06/24
Caro Construction Ltd
Caro Construction Ltd is an established and experienced local extension builder in Northolt. Please contact us for a free, no obligation quote and ...
"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
MJO CONSTRUCTION LIMITED
Northolt, UB5
MJO CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in Northolt. We offer a competitive rate to complete all your ext...
"Loft conversion" - SOUTHALL, job posted 29/01/24
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...
"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
Splendid Design
We are a team of professionals who specialise in: Kitchen Installation Kitchen and Bathroom refurbishment Bespoke furniture for: Kitchen Livi...
"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
Rays construction Ltd
Need an Extension Builder in Northolt? Rays construction Ltd has been helping local clients (10 mile radius) with their extension buildering jobs f...
PRIME BUILDERS
Trusted and professional extension builder in Northolt. Experienced in all extension buildering work and keeping within budget and on quote. PRIME ...
Artifex Construction Limited
Artifex Construction Limited is a trusted extension builder serving customers in Northolt and the surrounding area. Contact us to today to get a co...
Japji construction limited
Harpreet Singh
Trusted and professional extension builder in Northolt. Experienced in all extension buildering work and keeping within budget and on quote. Japji ...
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- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local Northolt Extension Builders or phone them directly - you’re in control!
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 - £26,184
Garden office - £10,184
Granny annexe - £87,184
Build a flat roof extension - £22,184
Convert a Garage - £16,184
Hip to gable loft conversion - £42,184
Convert a bungalow loft - £29,184
Build a dormer loft conversion - £42,184
Build a swimming pool - £81,184
Build a Mansard loft conversion - £52,184
Concrete foundations - £6,434
Underpin a building - £17,684
Two storey extension - £88,276
Convert a basement - £39,570
Side return extension - £43,570
Loft conversion - £35,475
Garage - £18,684
Single storey extension - £58,680
Outbuilding - £10,184
Install an RSJ - £2,384
Build a kitchen extension - £42,184
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