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SMH Build & Renovate
SMH Build & Renovate is an established extension buildering business in Belmont. We come highly recommended and provide competitive quotes for your...
"Loft conversion or dormer" - BL3, job posted 28/07/26
Amak Construction
Amak Construction is an established and experienced local extension builder in Belmont. Please contact us for a free, no obligation quote and compe...
"Dormer loft conversion" - BL3, job posted 05/07/26
Garry Ryan Property Repairs
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Two storey extension" - GREATER MANCHESTER, job posted 27/06/26
J. Grimshaw
Need to find an Extension Builder near you for all your extension buildering work?
J. Grimshaw provides a local, trusted extension builderi...
"Dormer loft conversion" - BOLTON, job posted 27/04/26
DC Contractors
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
"Loft conversion" - BL3, job posted 27/04/26
ESBP Specialists Ltd
Jonathan
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...
"Loft conversion" - BOLTON, job posted 16/04/26
J & C Barker (Builders) Limited
Need to find an Extension Builder near you for all your extension buildering work?
J & C Barker (Builders) Limited provides a local, truste...
"Garage" - GREATER MANCHESTER, job posted 02/03/26
Wallplas
Wallplas is an established extension buildering business in Belmont. We come highly recommended and provide competitive quotes for your work.
"RSJ installation" - BOLTON, job posted 23/11/25
WWS Garage Doors & Shutters
WWS Garage Doors & Shutters is a trusted extension builder serving customers in Belmont and the surrounding area. Contact us to today to get a comp...
"Loft conversion" - BOLTON, job posted 27/10/25
Fishers Building & Paving Ltd
Fishers Building & Paving Ltd is an established extension buildering business in Belmont. We come highly recommended and provide competitive quotes...
"Loft extension with dormer" - BL1, job posted 17/09/25
QUAYSTONE BUILDING LTD
QUAYSTONE BUILDING LTD are here to help customers who need an Extension Builder in Belmont. We offer a competitive rate to complete all your extens...
"RSJ installation" - BOLTON, job posted 17/09/25
CB BUILDING & JOINERY LTD
Need an Extension Builder in Belmont? CB BUILDING & JOINERY LTD has been helping local clients (20 mile radius) with their extension buildering job...
"Two storey extension" - BOLTON, job posted 24/04/25
BRENCOLL BUILDING
BRENCOLL BUILDING is an established extension buildering business in Belmont. We come highly recommended and provide competitive quotes for your wo...
"Two storey extension" - BOLTON, job posted 06/02/25
Bolton Builders
Bolton Builders is an established and experienced local extension builder in Belmont. Please contact us for a free, no obligation quote and competi...
"Loft conversion" - BOLTON, job posted 16/12/24
Unity Building Services
Daniel
Experienced extension builder ready to quote for your work. Unity Building Services is the best extension builder in Belmont. No obligation free qu...
"Basement conversion" - GREATER MANCHESTER, job posted 07/12/24
Chino's Maintenance
Chino's Maintenance is a trusted extension builder serving customers in Belmont and the surrounding area. Contact us to today to get a competitive ...
"Loft dormer conversion" - BOLTON, job posted 30/11/24
East Lancs Construction Ltd
Need to find an Extension Builder near you for all your extension buildering work?
East Lancs Construction Ltd provides a local, trusted ex...
"Loft conversion" - BOLTON, job posted 22/07/24
PETER BALDWIN BUILDERS
PETER BALDWIN BUILDERS is an established extension buildering business in Belmont. We come highly recommended and provide competitive quotes for yo...
"Dorma loft conversion on a 2 bed 68.6m2 ( 739sqft) semi detached bungalow would ideally like two bedrooms and a bathroom In the conversion" - BL7, job posted 22/05/24
L D Debnam Building Services
L D Debnam Building Services is an established and experienced local extension builder in Belmont. Please contact us for a free, no obligation quot...
"Basement conversion" - BOLTON, job posted 26/03/24
A AND S SCHOFIELD BLDRS LTD
Simon Schofield
A AND S SCHOFIELD BLDRS LTD is an established extension buildering business in Belmont. We come highly recommended and provide competitive quotes f...
"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." - BOLTON, job posted 10/03/24
Compare Belmont extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Bolton | £31 | £219 |
| Extension Builders near Darwen | £34 | £255 |
| Extension Builders near Horwich | £30 | £219 |
| Extension Builders near Bury | £30 | £219 |
| Extension Builders near Farnworth | £30 | £219 |
| Extension Builders near Radcliffe | £30 | £220 |
| Extension Builders near Westhoughton | £31 | £222 |
| Extension Builders near Little Hulton | £31 | £220 |
| Extension Builders near Rawtenstall | £29 | £213 |
| Extension Builders near Atherton | £31 | £223 |
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 - £25,872

Garden office - £9,872

Granny annexe - £86,872

Build a flat roof extension - £21,872

Convert a Garage - £15,872

Hip to gable loft conversion - £41,872

Convert a bungalow loft - £28,872

Build a dormer loft conversion - £41,872

Build a swimming pool - £80,872

Build a Mansard loft conversion - £51,872

Concrete foundations - £6,122

Underpin a building - £17,372

Two storey extension - £87,808

Convert a basement - £36,060

Side return extension - £40,060

Loft conversion - £32,550

Garage - £18,372

Single storey extension - £52,440

Outbuilding - £9,872

Install an RSJ - £2,072

Build a kitchen extension - £41,872
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