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Mark Munro
We aim to provide quality workmanship on every job that will exceed your expectations. Our quotes are reasonable and competitive and we guarantee t...
J FANNAN JNRS AND BUILDERS LTD is an established extension buildering business in Cumbernauld. We come highly recommended and provide competitive q...
Trusted and professional extension builder in Cumbernauld. Experienced in all extension buildering work and keeping within budget and on quote. D M...
Need an Extension Builder in Cumbernauld? PRIME BUILD SOLUTIONS LTD has been helping local clients (20 mile radius) with their extension buildering...
Need an Extension Builder in Cumbernauld? Collum & Scott Roughcasting has been helping local clients (20 mile radius) with their extension builderi...
Ground Marking Company LTD is the best choice for all your line marking needs. We have over 30 years of experience in the industry and are known as...
Trusted and professional extension builder in Cumbernauld. Experienced in all extension buildering work and keeping within budget and on quote. Tom...
JLC BUILDERS are here to help customers who need an Extension Builder in Cumbernauld. We offer a competitive rate to complete all your extension bu...
Experienced extension builder ready to quote for your work. Gerry Doyle Building is the best extension builder in Cumbernauld. No obligation free q...
Relax... you have found a reliable extension builder in Cumbernauld. Roughcasting is a friendly and reliable company based in Cumbernauld who consi...

Building a granny annexe ranges from £86,824 (J FANNAN JNRS AND BUILDERS LTD based in G68) to £87,152 (PRIME BUILD SOLUTIONS LTD based in ML6), 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 Cumbernauld by posting a job with HaMuch. We will send it to extension builders in Cumbernauld who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Cumbernauld | £31 | £234 |
| Granny Annexe near Airdrie | £31 | £238 |
| Granny Annexe near North Lanarkshire | £31 | £238 |
| Granny Annexe near Coatbridge | £32 | £245 |
| Granny Annexe near Kirkintilloch | £35 | £258 |
| Granny Annexe near East Dunbartonshire | £35 | £261 |
| Granny Annexe near Falkirk | £31 | £228 |
| Granny Annexe near Viewpark | £31 | £233 |
| Granny Annexe near Bellshill | £32 | £235 |
| Granny Annexe near Bishopbriggs | £35 | £262 |
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 - £17,466

Two storey extension - £87,950

Build a timber frame extension - £25,966

Build a swimming pool - £80,966

Single storey extension - £54,328

Side return extension - £41,122

Install an RSJ - £2,166

Outbuilding - £9,966

Build a Mansard loft conversion - £51,966

Loft conversion - £33,435

Build a kitchen extension - £41,966

Hip to gable loft conversion - £41,966

Granny annexe - £86,966

Garden office - £9,966

Convert a Garage - £15,966

Garage - £18,466

Build a flat roof extension - £21,966

Build a dormer loft conversion - £41,966

Concrete foundations - £6,216

Convert a bungalow loft - £28,966

Convert a basement - £37,122