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Samuele Paolini
Samuele Paolini
Need an Extension Builder in NW6? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
"Two storey extension" - NW6, job posted 27/09/26
A&J BUILDERS & DECORATORS LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Side return extension" - NW10, job posted 14/08/25
V.S.P
V.S.P is a trusted extension builder serving customers in NW6 and the surrounding area. Contact us to today to get a competitive quote for extensio...
"We have a long list of customers that need only a builder that can fit conservatory. We don’t need supplier. Please contact us if you can help. Thanks" - NW10, job posted 10/07/25
Mr
Jonathan Rimmer
Experienced extension builder ready to quote for your work. Mr is the best extension builder in NW6. No obligation free quotes and many happy custo...
"Loft conversion 50 sq meater renovation of houe in nd out. Can call on 0203 336x xx" - NW2, job posted 05/02/24
BPS Building
Kilburn, NW6
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
NWL Renovations Ltd
Patrick Gavin
Need an Extension Builder in NW6? NWL Renovations Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many...
BELLVIEW BUILDERS LTD
Need to find an Extension Builder near you for all your extension buildering work?
BELLVIEW BUILDERS LTD provides a local, trusted extensio...
Khetani Builders (UK) Ltd
Experienced extension builder ready to quote for your work. Khetani Builders (UK) Ltd is the best extension builder in NW6. No obligation free quot...
SLS BUILDERS LIMITED
SLS BUILDERS LIMITED is a trusted extension builder serving customers in NW6 and the surrounding area. Contact us to today to get a competitive quo...
ELJHANI BUILDING & PROPERTY MANAGEMENT SERVICES LTD
Hussein Eljhani
We are highly professional Builders Company, hones pricing and reliable, we leave all areas clean and tidy.
Bros Construction Ltd
Experienced extension builder ready to quote for your work. Bros Construction Ltd is the best extension builder in NW6. No obligation free quotes a...
Plum & Bros Loft Ltd
Plum & Bros Loft Ltd is an established extension buildering business in NW6. We come highly recommended and provide competitive quotes for your wor...
EUROBUILD PROPERTIES CO LTD
Kilburn, NW6
Need to find an Extension Builder near you for all your extension buildering work?
EUROBUILD PROPERTIES CO LTD provides a local, trusted ex...
SDM Services
SDM Services is an established extension buildering business in NW6. We come highly recommended and provide competitive quotes for your work.
£45/hr
£279/day
Pro Fast Build
Pro Fast Build Ltd. is a well established building company specialising in all areas of building work – interior and exterior. We are the best ch...
£45/hr
£279/day
Hartley Limited
Trusted and professional extension builder in NW6. Experienced in all extension buildering work and keeping within budget and on quote. Hartley Lim...
£50/hr
£311/day
K & S
At K&S Interiors Ltd, we offer complete interior and exterior specialising in full home or office refurbishment to clients in Kensington, Chelsea a...
£46/hr
£293/day
Staunch And Flow Limited
Staunch and Flow is a small, experienced, and cost-effective London-based plumbing/heating engineering firm. We specialise in kitchen and bathroom ...
£46/hr
£289/day
AA Plus Renovation Ltd
Our building services company AA Plus Renovation Ltd has over 13 years of experience. Since then, we have been helping customers in London and the ...
£47/hr
£294/day
Ivy Project Management
When faced with difficulties and disorganisation with her own home build, Ivana realised that there were so many unnecessary stresses and delays in...
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- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in NW6. 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 NW6 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 - £26,240

Garden office - £10,240

Granny annexe - £87,240

Build a flat roof extension - £22,240

Convert a Garage - £16,240

Hip to gable loft conversion - £42,240

Convert a bungalow loft - £29,240

Build a dormer loft conversion - £42,240

Build a swimming pool - £81,240

Build a Mansard loft conversion - £52,240

Concrete foundations - £6,490

Underpin a building - £17,740

Two storey extension - £88,360

Convert a basement - £40,200

Side return extension - £44,200

Loft conversion - £36,000

Garage - £18,740

Single storey extension - £59,800

Outbuilding - £10,240

Install an RSJ - £2,440

Build a kitchen extension - £42,240
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