From £87,072
Need an Extension Builder in S8? Cortworth Millhouse Design & Build has been helping local clients (20 mile radius) with their extension buildering...
From £86,936
Dore Decor are a family run business with over 30 years experience - we offer an extensive range of building services and are able to provide a ful...
From £87,344
Trusted and professional extension builder in S8. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joinery ...
From £87,392
Need to find an Extension Builder near you for all your extension buildering work?
C.J.I Property Maintenance provides a local, trusted ext...
From £87,336
Blenheim Park Developments is an established and experienced local extension builder in S8. Please contact us for a free, no obligation quote and c...
From £86,960
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,008
We are a family run business with 20 years experience.
We take great care and attention to the work we carry out and pride ourselves on ...
From £87,344
Need to find an Extension Builder near you for all your extension buildering work?
JHM Property Services Ltd provides a local, trusted exte...
From £87,320
Trusted and professional extension builder in S8. Experienced in all extension buildering work and keeping within budget and on quote. GFN Building...
From £87,096
MRP Design And Build Limited is an established extension buildering business in S8. We come highly recommended and provide competitive quotes for y...

Building a granny annexe ranges from £86,936 (Dore Decor based in s8) to £87,392 (C.J.I Property Maintenance based in S8), 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 S8 by posting a job with HaMuch. We will send it to extension builders in S8 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Dronfield | £31 | £253 |
| Granny Annexe near Sheffield | £30 | £246 |
| Granny Annexe near Chesterfield | £29 | £225 |
| Granny Annexe near Rotherham | £29 | £226 |
| Granny Annexe near Wickersley | £29 | £224 |
| Granny Annexe near Worksop | £29 | £233 |
| Granny Annexe near Barnsley | £27 | £210 |
| Granny Annexe near Mansfield Woodhouse | £29 | £227 |
| Granny Annexe near Alfreton | £29 | £221 |
| Granny Annexe near Sutton-in-Ashfield | £28 | £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 - £17,681

Two storey extension - £88,271

Build a timber frame extension - £26,181

Build a swimming pool - £81,181

Single storey extension - £58,616

Side return extension - £43,534

Install an RSJ - £2,381

Outbuilding - £10,181

Build a Mansard loft conversion - £52,181

Loft conversion - £35,445

Build a kitchen extension - £42,181

Hip to gable loft conversion - £42,181

Granny annexe - £87,181

Garden office - £10,181

Convert a Garage - £16,181

Garage - £18,681

Build a flat roof extension - £22,181

Build a dormer loft conversion - £42,181

Concrete foundations - £6,431

Convert a bungalow loft - £29,181

Convert a basement - £39,534