Relax... you have found a reliable extension builder in G20. DS Builders is a friendly and reliable company based in G20 who consider no job as too...
Adelphi Design & Construction Ltd is an established and experienced local extension builder in G20. Please contact us for a free, no obligation quo...
Need an Extension Builder in G20? Gman-Joinery & Builders has been helping local clients (20 mile radius) with their extension buildering jobs for ...
LAKE BUILDERS LTD is an established extension buildering business in G20. We come highly recommended and provide competitive quotes for your work.<...
From £87,024
Whyte homes are here to help customers who need an Extension Builder in G20. We offer a competitive rate to complete all your extension buildering ...
From £87,192
If you’ve been searching for ‘Builder’s near me’ then look no further than KB Contractors . As local Builders, we’ve established...
From £86,968
CMK Home Extensions Ltd is an established extension buildering business in G20. We come highly recommended and provide competitive quotes for your ...
From £86,984
nest is an established extension buildering business in G20. We come highly recommended and provide competitive quotes for your work.
From £87,280
Relax... you have found a reliable extension builder in G20. Arkiton is a friendly and reliable company based in G20 who consider no job as too big...
From £86,952
Arkiton is one of the first combined architecture and construction companies in Glasgow, founded in 2017 by our in-house architect. Our aim is to s...

Building a granny annexe ranges from £86,952 (DS Builders based in G64) 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 G20 by posting a job with HaMuch. We will send it to extension builders in G20 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Glasgow | £35 | £259 |
| Granny Annexe near Bearsden | £34 | £263 |
| Granny Annexe near Bishopbriggs | £35 | £262 |
| Granny Annexe near Renfrew | £35 | £264 |
| Granny Annexe near Clydebank | £35 | £265 |
| Granny Annexe near Rutherglen | £34 | £255 |
| Granny Annexe near Giffnock | £35 | £260 |
| Granny Annexe near Paisley | £34 | £259 |
| Granny Annexe near Kirkintilloch | £35 | £258 |
| Granny Annexe near Cambuslang | £34 | £250 |
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 - £17,586

Two storey extension - £88,128

Build a timber frame extension - £26,086

Build a swimming pool - £81,086

Single storey extension - £56,712

Side return extension - £42,463

Install an RSJ - £2,286

Outbuilding - £10,086

Build a Mansard loft conversion - £52,086

Loft conversion - £34,553

Build a kitchen extension - £42,086

Hip to gable loft conversion - £42,086

Granny annexe - £87,086

Garden office - £10,086

Convert a Garage - £16,086

Garage - £18,586

Build a flat roof extension - £22,086

Build a dormer loft conversion - £42,086

Concrete foundations - £6,336

Convert a bungalow loft - £29,086

Convert a basement - £38,463