From £86,720
Need an Extension Builder in OL5? W WELSBY BUILDING SERVICE has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £86,648
Palm Developments is an established extension buildering business in OL5. We come highly recommended and provide competitive quotes for your work.<...
From £87,200
ANDREW WOOD CONSTRUCTION (SADDLEWORTH) LTD is an established extension buildering business in OL5. We come highly recommended and provide competiti...
From £86,912
Relax... you have found a reliable extension builder in OL5. CM BUILDING SERVICES is a friendly and reliable company based in OL5 who consider no j...
From £86,848
Trusted and professional extension builder in OL5. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...
From £86,872
Nova Construction was established in 2019 and has been providing reliable building and property maintenance services. We are based in Stalybridge a...
From £87,008
Ethos Property Developments Limited is an established extension buildering business in OL5. We come highly recommended and provide competitive quot...
From £86,880
We undertake all aspects of building, including eco and natural building, in the Greater Manchester area. From extensions and conversions to kitche...
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...

Building a granny annexe ranges from £86,184 (Valdecor based in OL8) to £87,200 (ANDREW WOOD CONSTRUCTION (SADDLEWORTH) LTD based in OL3), 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 OL5 by posting a job with HaMuch. We will send it to extension builders in OL5 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Stalybridge | £37 | £230 |
| Granny Annexe near Ashton-under-Lyne | £36 | £231 |
| Granny Annexe near Tameside | £35 | £231 |
| Granny Annexe near Oldham | £31 | £228 |
| Granny Annexe near Dukinfield | £35 | £231 |
| Granny Annexe near Hyde | £36 | £227 |
| Granny Annexe near Chadderton | £31 | £224 |
| Granny Annexe near Failsworth | £35 | £235 |
| Granny Annexe near Royton | £30 | £225 |
| Granny Annexe near Droylsden | £34 | £237 |
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 - £17,312

Two storey extension - £87,718

Build a timber frame extension - £25,812

Build a swimming pool - £80,812

Single storey extension - £51,240

Side return extension - £39,385

Install an RSJ - £2,012

Outbuilding - £9,812

Build a Mansard loft conversion - £51,812

Loft conversion - £31,988

Build a kitchen extension - £41,812

Hip to gable loft conversion - £41,812

Granny annexe - £86,812

Garden office - £9,812

Convert a Garage - £15,812

Garage - £18,312

Build a flat roof extension - £21,812

Build a dormer loft conversion - £41,812

Concrete foundations - £6,062

Convert a bungalow loft - £28,812

Convert a basement - £35,385