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Trusted and professional extension builder in Kilmarnock. Experienced in all extension buildering work and keeping within budget and on quote. Murd...
Antonio Cano
H & C JOINERS & BUILDERS LTD is an established and experienced local extension builder in Kilmarnock. Please contact us for a free, no obligation q...
Col-In the Builder is a trusted extension builder serving customers in Kilmarnock and the surrounding area. Contact us to today to get a competitiv...
Andy Gibson
ABG Resin Bond & Landscaping Ltd have been transforming driveways for many years, laying tarmac and installing block-paving, fence...
Kilmarnock, KA3
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,920
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in Kilmarnock and the surrounding area. C...

Building a granny annexe ranges from £86,744 (ABG Resin Bond & Landscaping Ltd based in KA6) to £87,288 (BMB BUILDERS based in KA3), 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 Kilmarnock by posting a job with HaMuch. We will send it to extension builders in Kilmarnock who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Kilmarnock | £36 | £271 |
| Granny Annexe near Irvine | £35 | £253 |
| Granny Annexe near Troon | £32 | £241 |
| Granny Annexe near Prestwick | £24 | £180 |
| Granny Annexe near Kilwinning | £33 | £250 |
| Granny Annexe near North Ayrshire | £33 | £250 |
| Granny Annexe near South Ayrshire | £25 | £190 |
| Granny Annexe near Ayr | £25 | £190 |
| Granny Annexe near Newton Mearns | £35 | £263 |
| Granny Annexe near Barrhead | £35 | £255 |
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 - £17,505

Two storey extension - £88,008

Build a timber frame extension - £26,005

Build a swimming pool - £81,005

Single storey extension - £55,107

Side return extension - £41,560

Install an RSJ - £2,205

Outbuilding - £10,005

Build a Mansard loft conversion - £52,005

Loft conversion - £33,800

Build a kitchen extension - £42,005

Hip to gable loft conversion - £42,005

Granny annexe - £87,005

Garden office - £10,005

Convert a Garage - £16,005

Garage - £18,505

Build a flat roof extension - £22,005

Build a dormer loft conversion - £42,005

Concrete foundations - £6,255

Convert a bungalow loft - £29,005

Convert a basement - £37,560