From £39,750
ANDREW WOOD CONSTRUCTION (SADDLEWORTH) LTD is an established extension buildering business in OL3. We come highly recommended and provide competiti...
From £36,510
Relax... you have found a reliable extension builder in OL3. CM BUILDING SERVICES is a friendly and reliable company based in OL3 who consider no j...
From £33,540
Palm Developments is an established extension buildering business in OL3. We come highly recommended and provide competitive quotes for your work.<...
From £35,790
I teach others on how to achieve flawless finishes through my blog on my website. i also am a stickler for perfection. I'm very friendly and punctu...
From £34,800
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £34,350
Need an Extension Builder in OL3? W WELSBY BUILDING SERVICE has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £33,810
Experienced extension builder ready to quote for your work. KG Builders & Construction Ltd is the best extension builder in OL3. No obligation free...
From £34,890
New era developments is a small local limited company. Who create better living spaces . On time and on buget. To a very high standard. Thanks tony...
From £35,790
Trusted and professional extension builder in OL3. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in OL3 by posting a job with HaMuch and we will send it to extension builders in OL3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Oldham | £31 | £228 |
| Convert A Basement near Royton | £30 | £225 |
| Convert A Basement near Stalybridge | £37 | £230 |
| Convert A Basement near Ashton-under-Lyne | £36 | £231 |
| Convert A Basement near Chadderton | £31 | £224 |
| Convert A Basement near Tameside | £35 | £231 |
| Convert A Basement near Dukinfield | £35 | £231 |
| Convert A Basement near Failsworth | £35 | £235 |
| Convert A Basement near Rochdale | £30 | £221 |
| Convert A Basement near Hyde | £36 | £227 |
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 - £17,256

Two storey extension - £87,634

Build a timber frame extension - £25,756

Build a swimming pool - £80,756

Single storey extension - £50,120

Side return extension - £38,755

Install an RSJ - £1,956

Outbuilding - £9,756

Build a Mansard loft conversion - £51,756

Loft conversion - £31,463

Build a kitchen extension - £41,756

Hip to gable loft conversion - £41,756

Granny annexe - £86,756

Garden office - £9,756

Convert a Garage - £15,756

Garage - £18,256

Build a flat roof extension - £21,756

Build a dormer loft conversion - £41,756

Concrete foundations - £6,006

Convert a bungalow loft - £28,756

Convert a basement - £34,755