Need an Extension Builder in OL3? W WELSBY BUILDING SERVICE has been helping local clients (20 mile radius) with their extension buildering jobs fo...
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...
Shehele
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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 £88,300
ANDREW WOOD CONSTRUCTION (SADDLEWORTH) LTD is an established extension buildering business in OL3. We come highly recommended and provide competiti...
From £87,472
Palm Developments is an established extension buildering business in OL3. We come highly recommended and provide competitive quotes for your work.<...

Costs range from £86,776 (Valdecor based in OL8) to £88,300 (ANDREW WOOD CONSTRUCTION (SADDLEWORTH) LTD based in OL3), 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 OL3.
"Two storey extension" - OLDHAM, job posted 04/10/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Oldham | £31 | £229 |
| Two Storey Extension near Royton | £30 | £225 |
| Two Storey Extension near Stalybridge | £38 | £231 |
| Two Storey Extension near Ashton-under-Lyne | £36 | £232 |
| Two Storey Extension near Chadderton | £31 | £225 |
| Two Storey Extension near Tameside | £35 | £232 |
| Two Storey Extension near Dukinfield | £35 | £232 |
| Two Storey Extension near Failsworth | £35 | £236 |
| Two Storey Extension near Rochdale | £30 | £221 |
| Two Storey Extension 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 - £17,253

Two storey extension - £87,630

Build a timber frame extension - £25,753

Build a swimming pool - £80,753

Single storey extension - £50,063

Side return extension - £38,723

Install an RSJ - £1,953

Outbuilding - £9,753

Build a Mansard loft conversion - £51,753

Loft conversion - £31,436

Build a kitchen extension - £41,753

Hip to gable loft conversion - £41,753

Granny annexe - £86,753

Garden office - £9,753

Convert a Garage - £15,753

Garage - £18,253

Build a flat roof extension - £21,753

Build a dormer loft conversion - £41,753

Concrete foundations - £6,003

Convert a bungalow loft - £28,753

Convert a basement - £34,723