From £86,672
Experienced extension builder ready to quote for your work. KG Builders & Construction Ltd is the best extension builder in Oldham. No obligation f...
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
Oldham, OL4
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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 £86,848
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 £86,632
Trusted and professional extension builder in Oldham. Experienced in all extension buildering work and keeping within budget and on quote. Fit-on G...
From £86,768
Oldham, OL2
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 £86,912
Relax... you have found a reliable extension builder in Oldham. CM BUILDING SERVICES is a friendly and reliable company based in Oldham who conside...
From £86,648
Oldham, OL4
Palm Developments is an established extension buildering business in Oldham. We come highly recommended and provide competitive quotes for your wor...

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 Oldham by posting a job with HaMuch. We will send it to extension builders in Oldham 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 Royton | £30 | £225 |
| Granny Annexe near Failsworth | £35 | £235 |
| Granny Annexe near Ashton-under-Lyne | £36 | £231 |
| Granny Annexe near Middleton | £31 | £227 |
| Granny Annexe near Droylsden | £34 | £237 |
| Granny Annexe near Tameside | £35 | £231 |
| Granny Annexe near Stalybridge | £37 | £230 |
| Granny Annexe near Dukinfield | £35 | £231 |
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 - £17,257

Two storey extension - £87,635

Build a timber frame extension - £25,757

Build a swimming pool - £80,757

Single storey extension - £50,136

Side return extension - £38,764

Install an RSJ - £1,957

Outbuilding - £9,757

Build a Mansard loft conversion - £51,757

Loft conversion - £31,470

Build a kitchen extension - £41,757

Hip to gable loft conversion - £41,757

Granny annexe - £86,757

Garden office - £9,757

Convert a Garage - £15,757

Garage - £18,257

Build a flat roof extension - £21,757

Build a dormer loft conversion - £41,757

Concrete foundations - £6,007

Convert a bungalow loft - £28,757

Convert a basement - £34,764