From £87,312
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,032
Col-In the Builder is a trusted extension builder serving customers in KA13 and the surrounding area. Contact us to today to get a competitive quot...
From £86,920
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in KA13 and the surrounding area. Contact...
From £86,992
Relax... you have found a reliable extension builder in KA13. Adrian K Wilson Roofing Specialist is a friendly and reliable company based in KA13 w...
From £87,288
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,936
H & C JOINERS & BUILDERS LTD is an established and experienced local extension builder in KA13. Please contact us for a free, no obligation quote a...
From £87,224
Trusted and professional extension builder in KA13. Experienced in all extension buildering work and keeping within budget and on quote. Ayrshire J...
From £86,744
ABG Resin Bond & Landscaping Ltd have been transforming driveways for many years, laying tarmac and installing block-paving, fence...
From £87,112
Trusted and professional extension builder in KA13. Experienced in all extension buildering work and keeping within budget and on quote. Murdoch Co...
From £87,136
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Building a granny annexe ranges from £86,744 (ABG Resin Bond & Landscaping Ltd based in KA6) to £87,312 (Unibuild Property Services based in KA20), 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 KA13 by posting a job with HaMuch. We will send it to extension builders in KA13 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Kilwinning | £33 | £249 |
| Granny Annexe near North Ayrshire | £33 | £250 |
| Granny Annexe near Irvine | £34 | £250 |
| Granny Annexe near Troon | £32 | £241 |
| Granny Annexe near Kilmarnock | £36 | £271 |
| Granny Annexe near Prestwick | £24 | £180 |
| Granny Annexe near South Ayrshire | £25 | £190 |
| Granny Annexe near Johnstone | £52 | £381 |
| Granny Annexe near Ayr | £25 | £190 |
| Granny Annexe near Renfrewshire | £54 | £398 |
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 - £17,570

Two storey extension - £88,104

Build a timber frame extension - £26,070

Build a swimming pool - £81,070

Single storey extension - £56,392

Side return extension - £42,283

Install an RSJ - £2,270

Outbuilding - £10,070

Build a Mansard loft conversion - £52,070

Loft conversion - £34,403

Build a kitchen extension - £42,070

Hip to gable loft conversion - £42,070

Granny annexe - £87,070

Garden office - £10,070

Convert a Garage - £16,070

Garage - £18,570

Build a flat roof extension - £22,070

Build a dormer loft conversion - £42,070

Concrete foundations - £6,320

Convert a bungalow loft - £29,070

Convert a basement - £38,283