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 £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 £87,112
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,344
Trusted and professional extension builder in Balby. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joine...
From £86,984
BP Builders are here to help customers who need an Extension Builder in Balby. We offer a competitive rate to complete all your extension builderin...
From £86,864
Trusted and professional extension builder in Balby. Experienced in all extension buildering work and keeping within budget and on quote. MGG CONST...
From £87,064
Prestine Property Maintenance Services is an established and experienced local extension builder in Balby. Please contact us for a free, no obligat...
From £86,912
MANVERS CONSTRUCTION is an established and experienced local extension builder in Balby. Please contact us for a free, no obligation quote and comp...
From £86,752
J CLARKE CONSTRUCTION LTD are here to help customers who need an Extension Builder in Balby. We offer a competitive rate to complete all your exten...
From £86,968
Relax... you have found a reliable extension builder in Balby. CS Construction & Conversions is a friendly and reliable company based in Balby who ...

Building a granny annexe ranges from £86,752 (J CLARKE CONSTRUCTION LTD based in S75) to £87,344 (AMB Joinery & Building Services 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 Balby by posting a job with HaMuch. We will send it to extension builders in Balby who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Doncaster | £29 | £238 |
| Granny Annexe near Wickersley | £33 | £257 |
| Granny Annexe near Rotherham | £33 | £257 |
| Granny Annexe near Bassetlaw | £31 | £243 |
| Granny Annexe near Pontefract | £30 | £228 |
| Granny Annexe near Retford | £31 | £243 |
| Granny Annexe near Worksop | £33 | £265 |
| Granny Annexe near Barnsley | £31 | £242 |
| Granny Annexe near Goole | £26 | £217 |
| Granny Annexe near Gainsborough | £30 | £234 |
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 - £17,494

Two storey extension - £87,992

Build a timber frame extension - £25,994

Build a swimming pool - £80,994

Single storey extension - £54,888

Side return extension - £41,437

Install an RSJ - £2,194

Outbuilding - £9,994

Build a Mansard loft conversion - £51,994

Loft conversion - £33,698

Build a kitchen extension - £41,994

Hip to gable loft conversion - £41,994

Granny annexe - £86,994

Garden office - £9,994

Convert a Garage - £15,994

Garage - £18,494

Build a flat roof extension - £21,994

Build a dormer loft conversion - £41,994

Concrete foundations - £6,244

Convert a bungalow loft - £28,994

Convert a basement - £37,437