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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 £21,920
Andrew Wright Windows Ltd -Independent Network Installer is a trusted extension builder serving customers in Kilmarnock and the surrounding area. C...

A flat roof extension ranges from the cheapest of £21,744 (ABG Resin Bond & Landscaping Ltd based in KA6) to the dearest of £22,288 (BMB BUILDERS based in KA3), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Kilmarnock by posting a job with HaMuch. We'll send it to extension builders in Kilmarnock.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Kilmarnock | £36 | £271 |
| Build A Flat Roof Extension near Irvine | £35 | £253 |
| Build A Flat Roof Extension near Troon | £32 | £241 |
| Build A Flat Roof Extension near Prestwick | £24 | £180 |
| Build A Flat Roof Extension near Kilwinning | £33 | £250 |
| Build A Flat Roof Extension near North Ayrshire | £33 | £250 |
| Build A Flat Roof Extension near South Ayrshire | £25 | £190 |
| Build A Flat Roof Extension near Ayr | £25 | £190 |
| Build A Flat Roof Extension near Newton Mearns | £35 | £263 |
| Build A Flat Roof Extension 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