Local BL3 extension builders
URUZ Studio
£32/hour
£233/day
We make immersive virtual experiences that transport people to real-life architecture projects in order to imagine the future.Architecture is portr...
"Loft conversion or dormer" - MUQADAS, BL3
Lostock Design & Build
£29/hour
£211/day
Lostock Design & Build is an established and experienced local extension builder in BL3. Please contact us for a free, no obligation quote and comp...
"Dormer loft conversion" - BL3
QUAYSTONE BUILDING LTD
£28/hour
£208/day
QUAYSTONE BUILDING LTD are here to help customers who need an Extension Builder in BL3. We offer a competitive rate to complete all your extension ...
"Loft conversion" - BL3
WWS Garage Doors & Shutters
£29/hour
£211/day
WWS Garage Doors & Shutters is a trusted extension builder serving customers in BL3 and the surrounding area. Contact us to today to get a competit...
"Dormer loft conversion" - BOLTON
CB BUILDING & JOINERY LTD
£30/hour
£226/day
Need an Extension Builder in BL3? CB BUILDING & JOINERY LTD has been helping local clients (20 mile radius) with their extension buildering jobs fo...
"Loft conversion" - BL4
PETER BALDWIN BUILDERS
£35/hour
£255/day
PETER BALDWIN BUILDERS is an established extension buildering business in BL3. We come highly recommended and provide competitive quotes for your w...
"RSJ installation" - BOLTON
L D Debnam Building Services
£29/hour
£209/day
L D Debnam Building Services is an established and experienced local extension builder in BL3. Please contact us for a free, no obligation quote an...
"Loft extension with dormer" - BL1
First Rate Home Builders
£36/hour
£264/day
Come Home To Quality. First Rate Home Builders delivers quality construction in a professional manner. Servicing Bolton and the surrounding areas o...
"Convert garages to 3 or 2 bedroom ensuite semi detached house" - RICHARD, BL4
Wallplas
£30/hour
£221/day
Wallplas is an established extension buildering business in BL3. We come highly recommended and provide competitive quotes for your work.
"Two storey extension" - SOEB, BOLTON
Bolton Builders
£27/hour
£200/day
Bolton Builders is an established and experienced local extension builder in BL3. Please contact us for a free, no obligation quote and competitive...
"Two storey extension" - BOLTON
A AND S SCHOFIELD BLDRS LTD
£23/hour
£184/day
A AND S SCHOFIELD BLDRS LTD is an established extension buildering business in BL3. We come highly recommended and provide competitive quotes for y...
"Loft dormer conversion" - IMRANE, BOLTON
Construction Covered
£31/hour
£227/day
Construction Covered is a trusted extension builder serving customers in BL3 and the surrounding area. Contact us to today to get a competitive quo...
"Dorma loft conversion on a 2 bed 68.6m2 ( 739sqft) semi detached bungalow would ideally like two bedrooms and a bathroom In the conversion" - CLAIRE, BL7
Lostock Design & Build Limited
£31/hour
£217/day
Lostock Design & Build Limited is an established and experienced local extension builder in BL3. Please contact us for a free, no obligation quote ...
"Basement conversion" - BOLTON
IK MASTER BUILD LTD
£30/hour
£220/day
IK MASTER BUILD LTD is an established and experienced local extension builder in BL3. Please contact us for a free, no obligation quote and competi...
"Loft conversion 1930s semi" - M28
BRENCOLL BUILDING
£29/hour
£213/day
BRENCOLL BUILDING is an established extension buildering business in BL3. We come highly recommended and provide competitive quotes for your work.<...
"Looking to extend the home 3 meters out and just under 9 meters width. Knock down a wall between kitchen and room to make it a large open plan kitchen dining area." - USMAN, BOLTON
Fishers Building & Paving Ltd
£28/hour
£204/day
Fishers Building & Paving Ltd is an established extension buildering business in BL3. We come highly recommended and provide competitive quotes for...
"Loft skylight conversion" - BL3
Contact Construction
£29/hour
£211/day
Trusted and professional extension builder in BL3. Experienced in all extension buildering work and keeping within budget and on quote. Contact Con...
"Loft conversion. Pitched roof, already have velux installed. Need a basic room conversion, ideally with stairs." - ANDY, BOLTON
Astley Bridge Building Services
£36/hour
£260/day
Astley Bridge Building Services have been established since 1999 and offer quality building services to the public who are looking for a personal s...
"Loft conversion" - BOLTON
WH Building & Restoration
£30/hour
£215/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Mike's Home Improvements
£27/hour
£199/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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
Compare BL3 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Bolton | £27 | £193 |
| Extension Builders near Farnworth | £27 | £194 |
| Extension Builders near Little Hulton | £27 | £196 |
| Extension Builders near Westhoughton | £27 | £194 |
| Extension Builders near Atherton | £27 | £194 |
| Extension Builders near Radcliffe | £26 | £194 |
| Extension Builders near Horwich | £27 | £192 |
| Extension Builders near Swinton | £27 | £202 |
| Extension Builders near Leigh | £27 | £193 |
| Extension Builders near Bury | £26 | £192 |
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 - £25,768

Garden office - £9,768

Granny annexe - £86,768

Build a flat roof extension - £21,768

Convert a Garage - £15,768

Hip to gable loft conversion - £41,768

Convert a bungalow loft - £28,768

Build a dormer loft conversion - £41,768

Build a swimming pool - £80,768

Build a Mansard loft conversion - £51,768

Concrete foundations - £6,018

Underpin a building - £17,268

Two storey extension - £87,652

Convert a basement - £34,890

Side return extension - £38,890

Loft conversion - £31,575

Garage - £18,268

Single storey extension - £50,360

Outbuilding - £9,768

Install an RSJ - £1,968

Build a kitchen extension - £41,768
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