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David Anderson Builders
Relax... you have found a reliable extension builder in M46. David Anderson Builders is a friendly and reliable company based in M46 who consider n...
"Loft conversion or dormer" - BL3, job posted 28/07/26
Mike's Home Improvements
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Dormer loft conversion" - BL3, job posted 05/07/26
HAROLDS CORP
HAROLDS CORP is a trusted extension builder serving customers in M46 and the surrounding area. Contact us to today to get a competitive quote for e...
"Dormer loft conversion" - BOLTON, job posted 27/04/26
aps pointing and property maintenance
APS pointing and property maintenance offers a complete building service from small patch pointing to full refurb or extensions. Competitiv...
"Loft conversion" - BL3, job posted 27/04/26
SBA Facilities - Kitchens & Baths
SBA Facilities is a family run business founded by Director, Josef who has over 25 years of experience with the corporate, commercial, and domestic...
"Loft conversion" - BOLTON, job posted 16/04/26
Triple Check ltd
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - BL4, job posted 16/02/26
Construction Covered
Construction Covered is a trusted extension builder serving customers in M46 and the surrounding area. Contact us to today to get a competitive quo...
"RSJ installation" - BOLTON, job posted 23/11/25
Lostock Design & Build Limited
Lostock Design & Build Limited is an established and experienced local extension builder in M46. Please contact us for a free, no obligation quote ...
"Loft conversion" - BOLTON, job posted 27/10/25
Lostock Design & Build
Lostock Design & Build is an established and experienced local extension builder in M46. Please contact us for a free, no obligation quote and comp...
"Loft extension with dormer" - BL1, job posted 17/09/25
URUZ Studio
We make immersive virtual experiences that transport people to real-life architecture projects in order to imagine the future.Architecture is portr...
"RSJ installation" - BOLTON, job posted 17/09/25
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 M46 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Atherton | £31 | £223 |
| Extension Builders near Westhoughton | £31 | £222 |
| Extension Builders near Leigh | £31 | £224 |
| Extension Builders near Little Hulton | £30 | £220 |
| Extension Builders near Hindley | £30 | £219 |
| Extension Builders near Farnworth | £30 | £219 |
| Extension Builders near Bolton | £31 | £219 |
| Extension Builders near Horwich | £30 | £219 |
| Extension Builders near Golborne | £30 | £222 |
| Extension Builders near Wigan | £30 | £220 |
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 - £25,800
Garden office - £9,800
Granny annexe - £86,800
Build a flat roof extension - £21,800
Convert a Garage - £15,800
Hip to gable loft conversion - £41,800
Convert a bungalow loft - £28,800
Build a dormer loft conversion - £41,800
Build a swimming pool - £80,800
Build a Mansard loft conversion - £51,800
Concrete foundations - £6,050
Underpin a building - £17,300
Two storey extension - £87,700
Convert a basement - £35,250
Side return extension - £39,250
Loft conversion - £31,875
Garage - £18,300
Single storey extension - £51,000
Outbuilding - £9,800
Install an RSJ - £2,000
Build a kitchen extension - £41,800
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