We send your job to ALL OL12 extension builders
Available extension builders in OL12 reply
Select your affordable OL12 extension builder
Paul Foran
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
H.B.S is an established extension buildering business in OL12. We come highly recommended and provide competitive quotes for your work.
Terry Howlett
We are a local building company who specialises in keeping our customers happy we are reliable friendly. We carry out all types of building wo...
Need an Extension Builder in OL12? G Wardley Building & Repairs has been helping local clients (20 mile radius) with their extension buildering job...
PLP CONSTRUCTION LTD is an established and experienced local extension builder in OL12. Please contact us for a free, no obligation quote and compe...
From £86,160
Khuram Shahzad
MKS Builders Ltd is an established extension buildering business in OL12. We come highly recommended and provide competitive quotes for your work.<...
From £86,824
Kristian Hubbard
Jnc has been going for 15 years now we have over 10 lads at any time working for us . We Speselied in new building and Exstenshons
From £87,104
Need to find an Extension Builder near you for all your extension buildering work?
Tetrosyl provides a local, trusted extension buildering ...
From £86,592
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,016
Experienced extension builder ready to quote for your work. Tetlow Construction Ltd is the best extension builder in OL12. No obligation free quote...

Building a granny annexe ranges from £85,960 (Aquatec Builder based in OL10) to £87,104 (Tetrosyl based in OL16), 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 OL12 by posting a job with HaMuch. We will send it to extension builders in OL12 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Rochdale | £30 | £221 |
| Granny Annexe near Heywood | £30 | £221 |
| Granny Annexe near Royton | £30 | £225 |
| Granny Annexe near Middleton | £31 | £227 |
| Granny Annexe near Bury | £30 | £219 |
| Granny Annexe near Chadderton | £31 | £225 |
| Granny Annexe near Oldham | £31 | £229 |
| Granny Annexe near Rawtenstall | £29 | £213 |
| Granny Annexe near Whitefield | £31 | £229 |
| Granny Annexe near Radcliffe | £30 | £220 |
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 - £17,199

Two storey extension - £87,549

Build a timber frame extension - £25,699

Build a swimming pool - £80,699

Single storey extension - £48,984

Side return extension - £38,116

Install an RSJ - £1,899

Outbuilding - £9,699

Build a Mansard loft conversion - £51,699

Loft conversion - £30,930

Build a kitchen extension - £41,699

Hip to gable loft conversion - £41,699

Granny annexe - £86,699

Garden office - £9,699

Convert a Garage - £15,699

Garage - £18,199

Build a flat roof extension - £21,699

Build a dormer loft conversion - £41,699

Concrete foundations - £5,949

Convert a bungalow loft - £28,699

Convert a basement - £34,116