From £22,136
Johnstone, PA5
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,080
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,240
Abbey Services (Scotland) Ltd is a trusted extension builder serving customers in Johnstone and the surrounding area. Contact us to today to get a ...
From £22,184
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,272
LOCHNAGAR CONSTRUCTION LTD is a trusted extension builder serving customers in Johnstone and the surrounding area. Contact us to today to get a com...
From £22,128
LAKE BUILDERS LTD is an established extension buildering business in Johnstone. We come highly recommended and provide competitive quotes for your ...
From £21,376
Experienced extension builder ready to quote for your work. Glencroft Builders Ltd is the best extension builder in Johnstone. No obligation free q...
From £22,080
Adelphi Design & Construction Ltd is an established and experienced local extension builder in Johnstone. Please contact us for a free, no obligati...
From £21,944
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A flat roof extension ranges from the cheapest of £21,376 (Glencroft Builders Ltd based in G81) to the dearest of £22,312 (KFM Developments LTD based in G52), 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 Johnstone by posting a job with HaMuch. We'll send it to extension builders in Johnstone.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Johnstone | £52 | £381 |
| Build A Flat Roof Extension near Renfrewshire | £54 | £398 |
| Build A Flat Roof Extension near Paisley | £34 | £259 |
| Build A Flat Roof Extension near Barrhead | £35 | £257 |
| Build A Flat Roof Extension near Erskine | £34 | £258 |
| Build A Flat Roof Extension near Renfrew | £35 | £264 |
| Build A Flat Roof Extension near Clydebank | £35 | £264 |
| Build A Flat Roof Extension near Newton Mearns | £34 | £262 |
| Build A Flat Roof Extension near Giffnock | £35 | £260 |
| Build A Flat Roof Extension near Dumbarton | £29 | £232 |
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 - £17,575

Two storey extension - £88,113

Build a timber frame extension - £26,075

Build a swimming pool - £81,075

Single storey extension - £56,504

Side return extension - £42,346

Install an RSJ - £2,275

Outbuilding - £10,075

Build a Mansard loft conversion - £52,075

Loft conversion - £34,455

Build a kitchen extension - £42,075

Hip to gable loft conversion - £42,075

Granny annexe - £87,075

Garden office - £10,075

Convert a Garage - £16,075

Garage - £18,575

Build a flat roof extension - £22,075

Build a dormer loft conversion - £42,075

Concrete foundations - £6,325

Convert a bungalow loft - £29,075

Convert a basement - £38,346