Relax... you have found a reliable extension builder in Renfrew. DS Builders is a friendly and reliable company based in Renfrew who consider no jo...
Adelphi Design & Construction Ltd is an established and experienced local extension builder in Renfrew. Please contact us for a free, no obligation...
Need an Extension Builder in Renfrew? Gman-Joinery & Builders has been helping local clients (20 mile radius) with their extension buildering jobs ...
Boyle Construction Glasgow Ltd is a trusted extension builder serving customers in Renfrew and the surrounding area. Contact us to today to get a c...
Experienced extension builder ready to quote for your work. Glencroft Builders Ltd is the best extension builder in Renfrew. No obligation free quo...
LOCHNAGAR CONSTRUCTION LTD is a trusted extension builder serving customers in Renfrew and the surrounding area. Contact us to today to get a compe...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
LAKE BUILDERS LTD is an established extension buildering business in Renfrew. We come highly recommended and provide competitive quotes for your wo...
From £87,184
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,024
Whyte homes are here to help customers who need an Extension Builder in Renfrew. We offer a competitive rate to complete all your extension builder...

Building a granny annexe ranges from £86,376 (Glencroft Builders Ltd based in G81) to £87,296 (Gman-Joinery & Builders based in G13), 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 Renfrew by posting a job with HaMuch. We will send it to extension builders in Renfrew who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Renfrew | £35 | £264 |
| Granny Annexe near Paisley | £34 | £259 |
| Granny Annexe near Clydebank | £35 | £265 |
| Granny Annexe near Erskine | £34 | £258 |
| Granny Annexe near Bearsden | £34 | £263 |
| Granny Annexe near Johnstone | £52 | £381 |
| Granny Annexe near Glasgow | £35 | £259 |
| Granny Annexe near Renfrewshire | £54 | £398 |
| Granny Annexe near Barrhead | £35 | £255 |
| Granny Annexe near Giffnock | £35 | £260 |
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 - £17,526

Two storey extension - £88,038

Build a timber frame extension - £26,026

Build a swimming pool - £81,026

Single storey extension - £55,512

Side return extension - £41,788

Install an RSJ - £2,226

Outbuilding - £10,026

Build a Mansard loft conversion - £52,026

Loft conversion - £33,990

Build a kitchen extension - £42,026

Hip to gable loft conversion - £42,026

Granny annexe - £87,026

Garden office - £10,026

Convert a Garage - £16,026

Garage - £18,526

Build a flat roof extension - £22,026

Build a dormer loft conversion - £42,026

Concrete foundations - £6,276

Convert a bungalow loft - £29,026

Convert a basement - £37,788