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J & N Contracts Cambs Ltd
J & N Contracts Cambs Ltd is an established and experienced local extension builder in South Cambridgeshire. Please contact us for a free, no oblig...
"Loft conversion" - CAMBRIDGE, job posted 23/02/26
Fenlake Construction
Comprehensive, Intelligent Construction Service offering Domestic and Commercial Buildings, Barn, Basement and Loft Conversions, Renovation & Refur...
"Converting one of the bedroom into an on suite. ASAP." - SOUTH CAMBRIDGESHIRE, job posted 28/10/25
CROWNBUILD
Relax... you have found a reliable extension builder in South Cambridgeshire. CROWNBUILD is a friendly and reliable company based in South Cambridg...
"To convert one of the bedroom into on suite ." - SOUTH CAMBRIDGESHIRE, job posted 16/09/25
Rescapes Construction Ltd
Trusted and professional extension builder in South Cambridgeshire. Experienced in all extension buildering work and keeping within budget and on q...
"To convert one bedroom on to on suite room" - SOUTH CAMBRIDGESHIRE, job posted 29/07/25
M Woolfe Builders & Carpenters
Mickey Woolfe
Need to find an Extension Builder near you for all your extension buildering work?
M Woolfe Builders & Carpenters provides a local, trusted...
"Single storey extension" - SOUTH CAMBRIDGESHIRE, job posted 29/07/25
ECO DESIGN & BUILD (UK) LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Granny annexe" - SOUTH CAMBRIDGESHIRE, job posted 10/06/25
ALLIED BUILDING ASSOCIATES LTD
Experienced extension builder ready to quote for your work. ALLIED BUILDING ASSOCIATES LTD is the best extension builder in South Cambridgeshire. N...
"Loft conversion" - CAMBRIDGE, job posted 22/04/25
D Stebbings
Relax... you have found a reliable extension builder in South Cambridgeshire. D Stebbings is a friendly and reliable company based in South Cambrid...
"Build an outbuilding" - CAMBRIDGE, job posted 23/02/25
£44/hr
£301/day
Louise Swarbrick Design
Need to find an Extension Builder near you for all your extension buildering work?
Louise Swarbrick Design provides a local, trusted extens...
"Add one more dormer in current loft room" - CAMBRIDGE, job posted 13/02/25
£42/hr
£297/day
Beaumont Construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - CAMBRIDGE, job posted 02/10/24
£40/hr
£277/day
DEBRAY BUILDERS
Trusted and professional extension builder in South Cambridgeshire. Experienced in all extension buildering work and keeping within budget and on q...
"Hi I was hoping to get a quote for the renovation of an entire house. It’s about 60 years old. I would need: 1. potential plastering of walls, r 2. removal of an existing kitchen & fitting of new 3. Removal of 1 bathroom & fitting of 2 4. garage conversion 5. flooring & carpet, ..." - CB2, job posted 05/09/24
£35/hr
£247/day
SturdyBuild
Need an Extension Builder in South Cambridgeshire? SturdyBuild has been helping local clients (20 mile radius) with their extension buildering jobs...
"Loft conversion" - CAMBRIDGE, job posted 29/08/24
£37/hr
£266/day
Baufritz (UK) Limited
Need an Extension Builder in South Cambridgeshire? Baufritz (UK) Limited has been helping local clients (20 mile radius) with their extension build...
"Loft conversion" - CAMBRIDGE, job posted 17/04/24
£36/hr
£260/day
Coulson Building Group
Coulson Building Group is a trusted extension builder serving customers in South Cambridgeshire and the surrounding area. Contact us to today to ge...
"Single storey extension" - SOUTH CAMBRIDGESHIRE, job posted 15/04/24
£39/hr
£284/day
IJC Building Services Ltd
Trusted and professional extension builder in South Cambridgeshire. Experienced in all extension buildering work and keeping within budget and on q...
"Loft conversion" - CAMBRIDGE, job posted 19/02/24
£45/hr
£288/day
Refresh Renovations - Cambridgeshire - Simon
Relax... you have found a reliable extension builder in South Cambridgeshire. Refresh Renovations - Cambridgeshire - Simon is a friendly and reliab...
"Loft conversion" - CAMBRIDGE, job posted 21/08/23
Compare South Cambridgeshire extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near South Cambridgeshire | £50 | £315 |
| Extension Builders near Cambridge | £41 | £275 |
| Extension Builders near Biggleswade | £41 | £268 |
| Extension Builders near St Neots | £51 | £318 |
| Extension Builders near Huntingdon | £38 | £284 |
| Extension Builders near Letchworth | £44 | £283 |
| Extension Builders near North Hertfordshire | £44 | £283 |
| Extension Builders near Haverhill | £37 | £260 |
| Extension Builders near East Hertfordshire | £44 | £289 |
| Extension Builders near Ely | £40 | £279 |
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 - £26,328

Garden office - £10,328

Granny annexe - £87,328

Build a flat roof extension - £22,328

Convert a Garage - £16,328

Hip to gable loft conversion - £42,328

Convert a bungalow loft - £29,328

Build a dormer loft conversion - £42,328

Build a swimming pool - £81,328

Build a Mansard loft conversion - £52,328

Concrete foundations - £6,578

Underpin a building - £17,828

Two storey extension - £88,492

Convert a basement - £41,190

Side return extension - £45,190

Loft conversion - £36,825

Garage - £18,828

Single storey extension - £61,560

Outbuilding - £10,328

Install an RSJ - £2,528

Build a kitchen extension - £42,328
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