From £17,636
Johnstone, PA5
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,580
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,740
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 £17,684
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,772
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 £17,628
LAKE BUILDERS LTD is an established extension buildering business in Johnstone. We come highly recommended and provide competitive quotes for your ...
From £16,876
Experienced extension builder ready to quote for your work. Glencroft Builders Ltd is the best extension builder in Johnstone. No obligation free q...
From £17,580
Adelphi Design & Construction Ltd is an established and experienced local extension builder in Johnstone. Please contact us for a free, no obligati...
From £17,444
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,876 (Glencroft Builders Ltd based in G81) to £17,812 (KFM Developments LTD based in G52), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in Johnstone by posting a job with HaMuch and we will send it to extension builders in Johnstone.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Johnstone | £52 | £381 |
| Underpin A Building near Renfrewshire | £54 | £398 |
| Underpin A Building near Paisley | £34 | £259 |
| Underpin A Building near Barrhead | £35 | £257 |
| Underpin A Building near Erskine | £34 | £258 |
| Underpin A Building near Renfrew | £35 | £264 |
| Underpin A Building near Clydebank | £35 | £264 |
| Underpin A Building near Newton Mearns | £34 | £262 |
| Underpin A Building near Giffnock | £35 | £260 |
| Underpin A Building 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