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M & A UK Ltd
Relax... you have found a reliable extension builder in Kensington. M & A UK Ltd is a friendly and reliable company based in Kensington who conside...
"Flat roof extension for a period mews terraced house. We'd like a bedroom extension with full bathroom and a roof top terrace. Footprint is roughly 8.5m x 6m." - W6, job posted 06/10/24
Newpark Construction
Newpark Construction are here to help customers who need an Extension Builder in Kensington. We offer a competitive rate to complete all your exten...
"Mansard loft conversion" - SHEPHERD'S BUSH, job posted 26/09/24
H G Builders
H G Builders is an established and experienced local extension builder in Kensington. Please contact us for a free, no obligation quote and competi...
Graham Construction
Graham Construction is an established extension buildering business in Kensington. We come highly recommended and provide competitive quotes for yo...
Phormwork
Phormwork are here to help customers who need an Extension Builder in Kensington. We offer a competitive rate to complete all your extension builde...
Koncept Bathrooms
Need an Extension Builder in Kensington? Koncept Bathrooms has been helping local clients (5 mile radius) with their extension buildering jobs for ...
TELEMARK CONSTRUCTION LTD
TELEMARK CONSTRUCTION LTD is a trusted extension builder serving customers in Kensington and the surrounding area. Contact us to today to get a com...
£42/hr
£262/day
Leon
Leon is an established and experienced local extension builder in Kensington. Please contact us for a free, no obligation quote and competitive rat...
£48/hr
£299/day
Darlo Ltd
Darlo Ltd has over 20 years of constructing, refurbishing and transforming buildings for home-owners and commercial clients. We offer a one stop so...
£50/hr
£311/day
K & S
Kensington London, W10
At K&S Interiors Ltd, we offer complete interior and exterior specialising in full home or office refurbishment to clients in Kensington, Chelsea a...
£49/hr
£304/day
Clay Design & Build
Welcome to Clay. We’re a design and build atelier dedicated to transforming our clients’ spaces. Through a bespoke approach, we create designs ...
£45/hr
£282/day
Vyas Design
Kensington South Ayrshire, W8
Need to find an Extension Builder near you for all your extension buildering work?
Vyas Design provides a local, trusted extension builderi...
£41/hr
£253/day
FrontierstroyUK
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£46/hr
£293/day
Staunch And Flow Limited
Kensington Greater london, W10
Staunch and Flow is a small, experienced, and cost-effective London-based plumbing/heating engineering firm. We specialise in kitchen and bathroom ...
£45/hr
£280/day
Homeconcepts
Need to find an Extension Builder near you for all your extension buildering work?
Homeconcepts provides a local, trusted extension builder...
£39/hr
£245/day
Rose Narmani
Kensington Greater London, W8
Rose Narmani is an interior design studio based in Kensington that specialises in interior design, interior styling and luxury furniture packages. ...
£47/hr
£294/day
London Roofing Specialist Limited
London Roofing Specialists are professional roofing contractors based in London. We are a family run business who have been an established name in ...
£46/hr
£284/day
Broseley
Kensington London, W8
Broseley is a trusted extension builder serving customers in Kensington and the surrounding area. Contact us to today to get a competitive quote fo...
£40/hr
£247/day
Huntsmore
Trusted and professional extension builder in Kensington. Experienced in all extension buildering work and keeping within budget and on quote. Hunt...
£49/hr
£304/day
GSP
Kensington Greater London, W8
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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Use these steps to find Extension Builders in Kensington for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in Kensington. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local Kensington Extension Builders or phone them directly - you’re in control!
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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 - £26,216

Garden office - £10,216

Granny annexe - £87,216

Build a flat roof extension - £22,216

Convert a Garage - £16,216

Hip to gable loft conversion - £42,216

Convert a bungalow loft - £29,216

Build a dormer loft conversion - £42,216

Build a swimming pool - £81,216

Build a Mansard loft conversion - £52,216

Concrete foundations - £6,466

Underpin a building - £17,716

Two storey extension - £88,324

Convert a basement - £39,930

Side return extension - £43,930

Loft conversion - £35,775

Garage - £18,716

Single storey extension - £59,320

Outbuilding - £10,216

Install an RSJ - £2,416

Build a kitchen extension - £42,216
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