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Trinity Building Services
Martin Metcalfe
Need an Extension Builder in Rotherham? Trinity Building Services has been helping local clients (20 mile radius) with their extension buildering j...
"Two storey extension" - S63, job posted 25/09/26
Green Exteriors Ltd
Derren Ward
Rotherham, S60
Green Exteriors Ltd are here to help customers who need an Extension Builder in Rotherham. We offer a competitive rate to complete all your extensi...
"Renovated house full" - S9, job posted 12/09/26
AMB Joinery & Building Services
Trusted and professional extension builder in Rotherham. Experienced in all extension buildering work and keeping within budget and on quote. AMB J...
"Construction and repair works including resurfacing driveways, patios, paths and external hardstanding areas, plus associated drainage and groundworks. Construction & Asset" - S9, job posted 26/05/26
BP Builders
BP Builders are here to help customers who need an Extension Builder in Rotherham. We offer a competitive rate to complete all your extension build...
"Design, manufacture, deliver and install modular buildings for residential and commercial use across UK public sector projects. New Build" - S9, job posted 26/05/26
Premier Lofts
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Single story extension" - S60, job posted 24/03/26
G.J.H Joinery & Construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Convert a conservatory to a bedroom with en-suite" - S5, job posted 06/01/26
Britishbuildogs
Trusted and professional extension builder in Rotherham. Experienced in all extension buildering work and keeping within budget and on quote. Briti...
"Dormer loft conversion" - S65, job posted 04/01/26
Property Plus
Need an Extension Builder in Rotherham? Property Plus has been helping local clients (20 mile radius) with their extension buildering jobs for many...
"Single storey extension" - S64, job posted 17/11/25
Woodtec Joinery
Woodtec Joinery is an established extension buildering business in Rotherham. We come highly recommended and provide competitive quotes for your wo...
"Building work walls repaired ceilings repaired etc" - S65, job posted 12/10/25
Dore Decor
Dore Decor are a family run business with over 30 years experience - we offer an extensive range of building services and are able to provide a ful...
"I would like a loft conversion with a minimum cost such as velux/skylight conversion" - S13, job posted 21/09/25
MANVERS CONSTRUCTION
MANVERS CONSTRUCTION is an established and experienced local extension builder in Rotherham. Please contact us for a free, no obligation quote and ...
"Single storey extension" - ROTHERHAM, job posted 13/07/25
Yorkshire Garage Openers
Yorkshire Garage Openers is an established extension buildering business in Rotherham. We come highly recommended and provide competitive quotes fo...
"Side return extension" - ROTHERHAM, job posted 30/06/25
DAVID LEAKE CONSTRUCTION LTD
DAVID LEAKE CONSTRUCTION LTD is an established and experienced local extension builder in Rotherham. Please contact us for a free, no obligation qu...
"Dormer Loft conversion" - S66, job posted 29/06/25
Pc building services
Paul Chappell
Pc building services is a trusted extension builder serving customers in Rotherham and the surrounding area. Contact us to today to get a competiti...
"3mt sq extension on side of bungalow between 2 walls" - S66, job posted 03/06/25
£32/hr
£271/day
Milestone Builders
Milestone Builders is an established extension buildering business in Rotherham. We come highly recommended and provide competitive quotes for your...
"Need an extension builder" - S65, job posted 14/05/25
£35/hr
£289/day
Whitshaw Builders LTD
Whitshaw Builders LTD is an established and experienced local extension builder in Rotherham. Please contact us for a free, no obligation quote and...
"Attention Construction Businesses The Dynamic Purchasing System (DPS) for Major and Minor Construction Works (2025) is open for eligible suppliers, offering a range of services from plumbing, roofing, to new builds, mainly for social housing and commercial properties. Bid proposals are needed by 21..." - S9, job posted 10/04/25
£28/hr
£239/day
Oliver Wild Ltd
Oliver Wild Ltd is an established extension buildering business in Rotherham. We come highly recommended and provide competitive quotes for your wo...
"Attention Construction Businesses The Dynamic Purchasing System (DPS) for Major and Minor Construction Works (2025) is open for eligible suppliers, offering a range of services from plumbing, roofing, to new builds, mainly for social housing and commercial properties. Bid proposals are needed by 21..." - S9, job posted 10/04/25
£32/hr
£269/day
Trojan Turnarounds Ltd
Trojan Turnarounds Ltd is a trusted extension builder serving customers in Rotherham and the surrounding area. Contact us to today to get a competi...
"Double side and single rear extension on a 60’s semi detached." - S66, job posted 14/03/25
£31/hr
£259/day
Cortworth Millhouse Design & Build
Need an Extension Builder in Rotherham? Cortworth Millhouse Design & Build has been helping local clients (20 mile radius) with their extension bui...
"Chimney stack removal" - S5, job posted 27/12/24
£36/hr
£292/day
Blenheim Park Developments
Blenheim Park Developments is an established and experienced local extension builder in Rotherham. Please contact us for a free, no obligation quot...
"Conservatory building 14ft by10ft with solid roof and French doors solid wall at 1 side and taking the existing 1 down please quotes please" - S65, job posted 22/10/24
Compare Rotherham extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Rotherham | £32 | £257 |
| Extension Builders near Wickersley | £32 | £258 |
| Extension Builders near Sheffield | £32 | £261 |
| Extension Builders near Barnsley | £31 | £242 |
| Extension Builders near Dronfield | £33 | £262 |
| Extension Builders near Doncaster | £29 | £238 |
| Extension Builders near Worksop | £33 | £265 |
| Extension Builders near Chesterfield | £33 | £257 |
| Extension Builders near Pontefract | £30 | £228 |
| Extension Builders near Bassetlaw | £31 | £243 |
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 - £26,120
Garden office - £10,120
Granny annexe - £87,120
Build a flat roof extension - £22,120
Convert a Garage - £16,120
Hip to gable loft conversion - £42,120
Convert a bungalow loft - £29,120
Build a dormer loft conversion - £42,120
Build a swimming pool - £81,120
Build a Mansard loft conversion - £52,120
Concrete foundations - £6,370
Underpin a building - £17,620
Two storey extension - £88,180
Convert a basement - £38,850
Side return extension - £42,850
Loft conversion - £34,875
Garage - £18,620
Single storey extension - £57,400
Outbuilding - £10,120
Install an RSJ - £2,320
Build a kitchen extension - £42,120
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