Local NW3 extension builders, reviews & latest jobs
Samuele Paolini
£48/hour
£299/day
Need an Extension Builder in NW3? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
"Loft conversion 50 sq meater renovation of houe in nd out. Can call on 0203 336x xx" - NW2, job posted 05/02/24
ELJHANI BUILDING & PROPERTY MANAGEMENT SERVICES LTD
£33/hour
£330/day
We are highly professional Builders Company, hones pricing and reliable, we leave all areas clean and tidy.
SLS BUILDERS LIMITED
£39/hour
£247/day
SLS BUILDERS LIMITED is a trusted extension builder serving customers in NW3 and the surrounding area. Contact us to today to get a competitive quo...
NWL Renovations Ltd
£41/hour
£256/day
Need an Extension Builder in NW3? NWL Renovations Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many...
BPS Building
£38/hour
£241/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
ASE Design & Build Ltd
£45/hour
£288/day
Trusted and professional extension builder in NW3. Experienced in all extension buildering work and keeping within budget and on quote. ASE Design ...
I Builder London Ltd.
£45/hour
£282/day
Highly skilled teamDedicated project managerFully insuredWe provide routine building control checks
Plum & Bros Loft Ltd
£49/hour
£488/day
Plum & Bros Loft Ltd is an established extension buildering business in NW3. We come highly recommended and provide competitive quotes for your wor...
A&J BUILDERS & DECORATORS LTD
£47/hour
£295/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
EUROBUILD PROPERTIES CO LTD
£47/hour
£297/day
Need to find an Extension Builder near you for all your extension buildering work?
EUROBUILD PROPERTIES CO LTD provides a local, trusted ex...
BUILD SPACE
£43/hour
£268/day
Primrose Hill, NW3
BUILD SPACE is an established extension buildering business in NW3. We come highly recommended and provide competitive quotes for your work.
AA Plus Renovation Ltd
£46/hour
£289/day
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 ...
Ivy Project Management
£47/hour
£294/day
When faced with difficulties and disorganisation with her own home build, Ivana realised that there were so many unnecessary stresses and delays in...
JAMES REGAN CONSTRUCTION
£38/hour
£238/day
JAMES REGAN CONSTRUCTION is a trusted extension builder serving customers in NW3 and the surrounding area. Contact us to today to get a competitive...
Novo Solutions Group Ltd
£50/hour
£311/day
London, NW3
Welcome to Novo Solutions Group Ltd - Your premier building construction and renovation specialists. Based in the UK, Novo Solutions Group...
D.W Baker
£38/hour
£245/day
Experienced extension builder ready to quote for your work. D.W Baker is the best extension builder in NW3. No obligation free quotes and many happ...
Masters Construction UK
£48/hour
£303/day
20 years experience in high end carpentry, joinery and furniture making
AVmen Construction
£50/hour
£313/day
We are a local, small London business moving from B2B to B2C Construction Design & Build Market
Open Space London
£48/hour
£300/day
Greater London, NW3
Open Space London are here to help customers who need an Extension Builder in NW3. We offer a competitive rate to complete all your extension build...
Superior Project Ltd
£40/hour
£248/day
Superior Project Ltd delivers a wide range of services related to construction and renovation. We list just a selection here.House ExtensionsFull ...
Quickly find an Extension Builder in NW3
Use these steps to find Extension Builders in NW3 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in NW3. 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 NW3 Extension Builders or phone them directly - you’re in control!
The most important thing is do avoid handing over cash or paying large sums in advance. Be wary of paying cash for a cheaper job, i.e. to avoid VAT, you may be going down a slippery slope of not doing things properly which may eventually mean your job is also not done properly.
Agree when you intend to pay, ideally after you are satisfied with the completed job. If it is a big job agree a schedule of staged payments which is fair to both parties.
To avoid bad tradespeople and to ensure you can find them should they not answer a mobile;
- Get proper contact details and check them yourself
- Check if the company is verified on the Companies House website
- Get phone details, ideally a land line or 0800 number and check it
- Get a physical office address
Get quotes in writing by email or in person if possible. Getting quotes online or by text is ok (make sure you accept the offer by replying). For large projects make a written agreement, schedule of works and snagging plans as part of a working document. Also;
- Agree expected quality of workmanship and materials in advance
- When will work start and when will project be finished, what happens if project over runs ?
- How long is the guarantee on work and materials eg 12 months
- Discuss onsite behaviour in advance (no smoking, swearing or using mobile phones for non-work purposes)
- Agree that your Extension Builder will remove all debris and rubbish and what level of tidying up you want after job
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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