Find affordable extension builders near KT4
- Local extension builders KT4
- Job estimates from extension builders near you
- Local Extension Builders in London Boroughs
| Low | Average | High |
|---|---|---|
| £18 | £37 | £90 |
| Average hourly rate from 67 extension builders in KT4 ex VAT or callout | ||
Average KT4 extension builder hourly rate is £36
Range from the cheapest, mostly independent, £25 per hour and £220 per day (GJES LTD) to the dearest, normally the best, £39 per hour and £250 per day (Hy home improvements).
Comparing hourly and daily rates of extension builders gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Click 'Get quotes' and describe your job and we will send it to your local extension builders for FREE.

Local extension builders KT4
A H S Construction Design Ltd
Worcester park KT4
£37/hour
£236/day
A H S Construction Design Ltd is an established and experienced local extension builder in KT4. Please contact us for a free, no obligation quote and competitive rates. Covering a 10 mile radius.
"Build a brick outbuilding, 24ft by 14ft including folding doors. Usage is for gym and office."
RAMESH, KT5
The Bleu Group
£37/hour
£238/day
Extension Builder in KT4, KT4. Working within a 10 mile radius.
If you are looking for a KT4 Extension Builder and you need something replaced, fitted, or fixed, contact The Bleu Group today. We are competitively priced and recommended by KT4 customers for all work.
"Thank you so much single story extension "
NORTH CHEAM
Acquastone
London, Surrey KT4
£36/hour
£229/day
Extension Builder in KT4, KT4.
Need an Extension Builder in KT4? Acquastone has been helping local clients (10 mile radius) with their jobs for many years. Get a quote today.
"Build a hip to gable loft conversion"
KT4
JG BUILDING SERVICES
£37/hour
£232/day
Extension Builder in KT4, KT4. Working within a 10 mile radius.
JG BUILDING SERVICES is an established business in KT4. We come highly recommended and provide competitive quotes for your work.
"Two storey extension on the side and rear, new kitchen, new bathrooms"
LEANDRA, WORCESTER
D A P CONSTRUCTION
Worcester Park KT4
£30/hour
£220/day
Extension Builder in Worcester Park, KT4. Working within a 10 mile radius.
Please visit our web site. Www. Dapconstruction. Co . Uk to c all our work and client recommendations.
"Single storey extension"
WORCESTER
BAC Home Improvements Ltd
Worcester Park KT4
£30/hour
£250/day
Extension Builder in KT4, KT4. Working within a 10 mile radius.
BAC Home Improvements Ltd is an established business in KT4. We come highly recommended and provide competitive quotes for your work.
"Just a general enquiry "
KT4
Mallard Solutions Ltd
£36/hour
£227/day
Mallard Solutions Ltd are here to help customers who need an Extension Builder in KT4. We offer a competitive rate to complete all your jobs to professional standards.
Instaflame Property Services Limited
Worcester park KT4
£37/hour
£236/day
Extension Builder in KT4, KT4. Covering 10 mile radius.
Instaflame Property Services Limited is a trusted Extension Builder serving customers in KT4 and the surrounding area. Contact us to today to get a competitive quote for work in KT4. We offer value for money and quality to our customers, we pride ourselves on the positive feedback.
FALCON BUILDERS
£37/hour
£232/day
Extension Builder in KT4, SM3.
Need an Extension Builder in KT4? FALCON BUILDERS has been helping local clients (10 mile radius) with their jobs for many years. Get a quote today.
Peter Edwards Builders Ltd
£36/hour
£227/day
Need to find an Extension Builder near you for all your work?
Peter Edwards Builders Ltd provides a local, trusted service in and around KT4. Homeowners and landlords choose us for our excellent knowledge, experience and reliability plus reasonable call-out fees if applicable and no obligation quotes.
Hy home improvements
£39/hour
£243/day
Hy home improvements are here to help customers who need an Extension Builder in KT4. We offer a competitive rate to complete all your jobs to professional standards.
Refine Property Maintenance Ltd
£39/hour
£242/day
Extension Builder in Surrey, KT17. Working within a 10 mile radius.
Our building services company Refine Property Maintenance Ltd was established in 2020. Since then we have been helping customers in and around Epsom, Ewell, Chessington, Worcester Park, Cheam, Sutton, Leatherhead, and Surbiton by providing profess...
RM Sanwell Roofing
£37/hour
£232/day
Extension Builder in KT4, SM3. Covering 10 mile radius.
RM Sanwell Roofing is a trusted Extension Builder serving customers in KT4 and the surrounding area. Contact us to today to get a competitive quote for work in KT4. We offer value for money and quality to our customers, we pride ourselves on the positive feedback.
Linkfern Limited
£37/hour
£236/day
Extension Builder in KT4, KT3. Working within a 10 mile radius.
Linkfern Limited is an established business in KT4. We come highly recommended and provide competitive quotes for your work.
Cavendish Building and Construction Ltd
£39/hour
£242/day
Extension Builder in North Cheam Sutton, SM3. Working within a 10 mile radius.
Our building services company Cavendish Building and Construction Ltd have twenty-five years experience and have been helping customers in Cheam and the surrounding area by providing professional, trustworthy building services.Our vision i...
Croystone Ltd.
£39/hour
£242/day
Extension Builder in Epsom, KT17. Working within a 10 mile radius.
Croystone Ltd is a design and construction company with its own direct labour force but can also boast a wide range of subcontract labour skills and suppliers when required. We have built a reputation for high calibre design and build within both ...
Croystone Ltd.
£36/hour
£228/day
Extension Builder in KT4, KT17. Working within a 10 mile radius.
Croystone Ltd. is an established business in KT4. We come highly recommended and provide competitive quotes for your work.
BLU STAR BUILD LLP
£37/hour
£232/day
Extension Builder in KT4, KT3. Covering 10 mile radius.
BLU STAR BUILD LLP is a trusted Extension Builder serving customers in KT4 and the surrounding area. Contact us to today to get a competitive quote for work in KT4. We offer value for money and quality to our customers, we pride ourselves on the positive feedback.
Johnson Developments South East Ltd
£39/hour
£243/day
Extension Builder in Horton Surrey, KT19. Working within a 10 mile radius.
Extensions, Loft and garage conversions, New builds, Design and build, Project management
Quickly find an Extension Builder in KT4
Use these steps to find Extension Builders in KT4 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in KT4. 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 KT4 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.

Timber frame extension - £25,872

Garden office - £9,872

Granny annexe - £86,872

Flat roof extension - £21,872

Garage conversion - £15,872

Hip to gable loft conversion - £41,872

Bungalow loft conversion - £28,872

Dormer loft conversion - £41,872

Swimming pool - £80,872

Mansard loft conversion - £51,872

Concrete foundation - £6,122

Underpinning - £17,372

Two storey extension - £87,808

Basement conversion - £36,060

Side return extension - £40,060

Loft conversion - £32,550

Garage - £18,372

Single storey extension - £52,440

Outbuilding - £9,872

RSJ installation - £2,072

Kitchen extension - £41,872
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