From £87,096
We are a family ran business that has gone through three generations of management. We pride ourselves in providing the highest quality workmanship...
From £86,632
Trusted and professional extension builder in OL8. Experienced in all extension buildering work and keeping within budget and on quote. Fit-on Gara...
From £87,048
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,760
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,672
Experienced extension builder ready to quote for your work. KG Builders & Construction Ltd is the best extension builder in OL8. No obligation free...
From £86,848
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 £86,848
Trusted and professional extension builder in OL8. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...
From £86,384
Small brickwork jobs welcome.garden wall's and pointing as well.any type of walls built.
From £86,912
Relax... you have found a reliable extension builder in OL8. CM BUILDING SERVICES is a friendly and reliable company based in OL8 who consider no j...

Building a granny annexe ranges from £86,184 (Valdecor based in OL8) to £87,096 (N/W Builders based in Ol8), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in OL8 by posting a job with HaMuch. We will send it to extension builders in OL8 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Oldham | £31 | £228 |
| Granny Annexe near Chadderton | £31 | £224 |
| Granny Annexe near Failsworth | £35 | £235 |
| Granny Annexe near Ashton-under-Lyne | £36 | £231 |
| Granny Annexe near Royton | £30 | £225 |
| Granny Annexe near Droylsden | £34 | £237 |
| Granny Annexe near Tameside | £35 | £231 |
| Granny Annexe near Middleton | £31 | £227 |
| Granny Annexe near Dukinfield | £35 | £231 |
| Granny Annexe near Stalybridge | £37 | £230 |
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 - £17,238

Two storey extension - £87,608

Build a timber frame extension - £25,738

Build a swimming pool - £80,738

Single storey extension - £49,768

Side return extension - £38,557

Install an RSJ - £1,938

Outbuilding - £9,738

Build a Mansard loft conversion - £51,738

Loft conversion - £31,298

Build a kitchen extension - £41,738

Hip to gable loft conversion - £41,738

Granny annexe - £86,738

Garden office - £9,738

Convert a Garage - £15,738

Garage - £18,238

Build a flat roof extension - £21,738

Build a dormer loft conversion - £41,738

Concrete foundations - £5,988

Convert a bungalow loft - £28,738

Convert a basement - £34,557