Local WD6 extension builders & latest jobs
BBC
£46/hour
£287/day
Hertfordshire, WD6
Relax... you have found a reliable extension builder in WD6. BBC is a friendly and reliable company based in WD6 who consider no job as too big or ...
"Single storey extension" - BOREHAMWOOD, job posted 05/07/25
Mandala Building Services
£50/hour
£314/day
Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
London Roofing Building Ltd
£38/hour
£241/day
Borehamwood, WD6
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Lukpol Building Services
£42/hour
£261/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
V and T Homes Limited
£39/hour
£245/day
Greater London, WD6
V and T Homes Limited is an established extension buildering business in WD6. We come highly recommended and provide competitive quotes for your wo...
LF Gjabri Contractions Ltd
£37/hour
£238/day
Very good builder Brick work block work ground fencin drive ways patios extension New building no job to small
Monarchy Building Services Ltd
£40/hour
£252/day
Hertfordshire, WD6
Our building services company Monarchy Building Services Ltd have seventeen years’ experience and have been helping customers in Borehamwood and ...
Ardent Home Improvements Ltd
£37/hour
£233/day
Ardent Home Improvements Ltd is a trusted extension builder serving customers in WD6 and the surrounding area. Contact us to today to get a competi...
Harris Calnan Construction
£45/hour
£282/day
Herefordshire, WD6
Harris Calnan Construction is an established and experienced local extension builder in WD6. Please contact us for a free, no obligation quote and ...
K&K Building Contractors Ltd
£48/hour
£300/day
Trusted and professional extension builder in WD6. Experienced in all extension buildering work and keeping within budget and on quote. K&K Buildin...
Deluxe Construction
£39/hour
£244/day
Relax... you have found a reliable extension builder in WD6. Deluxe Construction is a friendly and reliable company based in WD6 who consider no jo...
Loft Conversion Company London
£44/hour
£281/day
Trusted and professional extension builder in WD6. Experienced in all extension buildering work and keeping within budget and on quote. Loft Conver...
Quickly find an Extension Builder in WD6
Use these steps to find Extension Builders in WD6 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in WD6. 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 WD6 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 - £26,120
Garden office - £10,120
Granny annexe - £87,120
Build a flat roof extension - £22,120
Convert a Garage - £16,120
Hip to gable loft conversion - £42,120
Convert a bungalow loft - £29,120
Build a dormer loft conversion - £42,120
Build a swimming pool - £81,120
Build a Mansard loft conversion - £52,120
Concrete foundations - £6,370
Underpin a building - £17,620
Two storey extension - £88,180
Convert a basement - £38,850
Side return extension - £42,850
Loft conversion - £34,875
Garage - £18,620
Single storey extension - £57,400
Outbuilding - £10,120
Install an RSJ - £2,320
Build a kitchen extension - £42,120
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