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Greystone Roofing & Building
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Hip to gable loft conversion" - LU3, job posted 29/07/26
Bacan's cleaning painting and decorating
Elena nuta Radu
Plumbing, painting exterior, interior, extensions, plastering, skiming, carpeting, Flooring, you can ask us ..
"Loft conversion" - LUTON, job posted 15/07/26
Greg-Bud
Need to find an Extension Builder near you for all your extension buildering work?
Greg-Bud provides a local, trusted extension buildering ...
"Room extension. Build a room attached to main house. Extend into my garden. 5 by 5.5 metre" - LU4, job posted 05/07/26
Top Notch Tradesmen
Top Notch Tradesmen is an established and experienced local extension builder in Thorn. Please contact us for a free, no obligation quote and compe...
"Single storey extension" - LU4, job posted 06/06/26
A.J Builders
A.J Builders is an established and experienced local extension builder in Thorn. Please contact us for a free, no obligation quote and competitive ...
"Flat roof extension" - LU4, job posted 29/05/26
FULLERS BUILDING SERVICES
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - LU4, job posted 27/04/26
Mat al construction ltd
Klajdi Progja
Need to find an Extension Builder near you for all your extension buildering work?
Mat al construction ltd provides a local, trusted exten...
"Single storey extension" - LU4, job posted 01/01/26
MARCON CONSTRUCTION LIMITED
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Single storey extension" - LU3, job posted 12/12/25
G&D Builders Ltd
We use only the highest quality products, and you can rest assured knowing that we are fully certified and registered with the relevant authorities...
"Loft conversion" - LUTON, job posted 01/10/25
Flitton Bros Property Ltd
Trusted and professional extension builder in Thorn. Experienced in all extension buildering work and keeping within budget and on quote. Flitton B...
"Loft conversion" - LUTON, job posted 24/08/25
S Sherazi Home Improvement Service
S Sherazi Home Improvement Service are here to help customers who need an Extension Builder in Thorn. We offer a competitive rate to complete all y...
"Hi, hope you’re well. My family & I live in a 2 bed new build and are looking to hopefully have a loft conversion to gain an extra room & space for our family of 4. It would be great if we could speak to someone regarding this. Thank you!" - LU5, job posted 20/07/25
A & D Maintenance Services Ltd
Melvyn Dallimore
Painting & Decorating including property maintenance Building services honest trustworthy fully qualified decorators established 35 years.We cove...
"Hi, hope you’re well. My family" - LU5, job posted 20/07/25
ARC Building Services
Abbas Shah
ARC Building Services is a trusted extension builder serving customers in Thorn and the surrounding area. Contact us to today to get a competitive...
"Single storey extension" - LUTON, job posted 08/07/25
£50/hr
£346/day
Urban Design&Construction
Marius Foca
Experienced extension builder ready to quote for your work. Urban Design&Construction is the best extension builder in Thorn. No obligation free qu...
"Loft conversion" - LUTON, job posted 04/05/25
£42/hr
£284/day
CURRYHILLS CONSTRUCTION LTD
CURRYHILLS CONSTRUCTION LTD are here to help customers who need an Extension Builder in Thorn. We offer a competitive rate to complete all your ext...
"Loft conversion" - LUTON, job posted 15/04/25
£40/hr
£264/day
Brim Builds
Relax... you have found a reliable extension builder in Thorn. Brim Builds is a friendly and reliable company based in Thorn who consider no job as...
"Dormer loft conversion" - LUTON, job posted 08/04/25
£44/hr
£294/day
T D F Building Contractors Ltd
T D F Building Contractors Ltd are here to help customers who need an Extension Builder in Thorn. We offer a competitive rate to complete all your ...
"Chimney breast removal" - LU6, job posted 02/04/25
£44/hr
£283/day
JK Property Service
JK Property Service is an established extension buildering business in Thorn. We come highly recommended and provide competitive quotes for your wo...
"Loft conversion - two bedrooms and shower" - LUTON, job posted 04/02/25
£39/hr
£261/day
T Cobb Plastering
T Cobb Plastering is an established and experienced local extension builder in Thorn. Please contact us for a free, no obligation quote and competi...
"Loft conversion" - LUTON, job posted 27/01/25
£45/hr
£301/day
GRAY & SONS BUILDERS LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Single storey extension" - LUTON, job posted 19/12/24
Compare Thorn extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Dunstable | £41 | £274 |
| Extension Builders near Luton | £42 | £279 |
| Extension Builders near Leighton Buzzard | £38 | £270 |
| Extension Builders near Mid Bedfordshire | £42 | £276 |
| Extension Builders near Ampthill | £38 | £258 |
| Extension Builders near Harpenden | £45 | £282 |
| Extension Builders near Berkhamsted | £41 | £273 |
| Extension Builders near Bletchley | £39 | £265 |
| Extension Builders near Hemel Hempstead | £43 | £276 |
| Extension Builders near Hitchin | £43 | £283 |
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 - £26,288

Garden office - £10,288

Granny annexe - £87,288

Build a flat roof extension - £22,288

Convert a Garage - £16,288

Hip to gable loft conversion - £42,288

Convert a bungalow loft - £29,288

Build a dormer loft conversion - £42,288

Build a swimming pool - £81,288

Build a Mansard loft conversion - £52,288

Concrete foundations - £6,538

Underpin a building - £17,788

Two storey extension - £88,432

Convert a basement - £40,740

Side return extension - £44,740

Loft conversion - £36,450

Garage - £18,788

Single storey extension - £60,760

Outbuilding - £10,288

Install an RSJ - £2,488

Build a kitchen extension - £42,288
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