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Select your affordable BD12 extension builder
Lee Jones
Jones Masonry Ltd is a trusted extension builder serving customers in BD12 and the surrounding area. Contact us to today to get a competitive quote...
Relax... you have found a reliable extension builder in BD12. MS General is a friendly and reliable company based in BD12 who consider no job as to...
Experienced extension builder ready to quote for your work. L J Robson (Contracts) Ltd is the best extension builder in BD12. No obligation free qu...
Dave Harrison
DAVID HARRISON BUILDING are here to help customers who need an Extension Builder in BD12. We offer a competitive rate to complete all your extensio...
Bhatoa Builders are here to help customers who need an Extension Builder in BD12. We offer a competitive rate to complete all your extension builde...
AAA BUILDERS are here to help customers who need an Extension Builder in BD12. We offer a competitive rate to complete all your extension builderin...
T Dickinson are here to help customers who need an Extension Builder in BD12. We offer a competitive rate to complete all your extension buildering...
From £87,556
Project Management Specialising in Home Extension & RefurbishmentCarrying out a major building project? Then you need to talk to us! YP Consultancy...
From £87,736
Relax... you have found a reliable extension builder in BD12. Oakfield Home and Garden is a friendly and reliable company based in BD12 who conside...

Costs range from £87,448 (AAA BUILDERS based in BD5) to £88,468 (Jones Masonry Ltd based in BD19), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to BD12.
"Two storey extension" - BD6, job posted 02/10/26
"Two storey extension or loft conversion" - BD2, job posted 02/12/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Brighouse | £30 | £230 |
| Two Storey Extension near Bradford | £29 | £225 |
| Two Storey Extension near Halifax | £32 | £243 |
| Two Storey Extension near Batley | £32 | £239 |
| Two Storey Extension near Mirfield | £31 | £236 |
| Two Storey Extension near Pudsey | £30 | £227 |
| Two Storey Extension near Morley | £31 | £239 |
| Two Storey Extension near Shipley | £29 | £226 |
| Two Storey Extension near Huddersfield | £29 | £224 |
| Two Storey Extension near Dewsbury | £33 | £245 |
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.

Underpin a building - £17,349

Two storey extension - £87,773

Build a timber frame extension - £25,849

Build a swimming pool - £80,849

Single storey extension - £51,978

Side return extension - £39,800

Install an RSJ - £2,049

Outbuilding - £9,849

Build a Mansard loft conversion - £51,849

Loft conversion - £32,333

Build a kitchen extension - £41,849

Hip to gable loft conversion - £41,849

Granny annexe - £86,849

Garden office - £9,849

Convert a Garage - £15,849

Garage - £18,349

Build a flat roof extension - £21,849

Build a dormer loft conversion - £41,849

Concrete foundations - £6,099

Convert a bungalow loft - £28,849

Convert a basement - £35,800