From £9,488
Proffesional roof tile, slate contractor based.near Surrey .Always guaranteed that we give our customers the best value for money.
From £10,024
Whyte homes are here to help customers who need an Extension Builder in G21. We offer a competitive rate to complete all your extension buildering ...
From £9,792
Slimline Property Services is an established extension buildering business in G21. We come highly recommended and provide competitive quotes for yo...
From £10,192
If you’ve been searching for ‘Builder’s near me’ then look no further than KB Contractors . As local Builders, we’ve established...
From £10,160
Kenmure Joinery Services are here to help customers who need an Extension Builder in G21. We offer a competitive rate to complete all your extensio...
From £10,280
Relax... you have found a reliable extension builder in G21. Arkiton is a friendly and reliable company based in G21 who consider no job as too big...
From £9,952
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...
From £9,984
nest is an established extension buildering business in G21. We come highly recommended and provide competitive quotes for your work.
From £10,016
ProRend is an established and experienced local extension builder in G21. Please contact us for a free, no obligation quote and competitive rates. ...
From £10,184
Smithjoinery is an established extension buildering business in G21. We come highly recommended and provide competitive quotes for your work.

Outbuilding costs in G21 range from the cheapest of £9,488 (Roofline Services based in G21) to the dearest of £10,280 (Arkiton based in G1), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in G21 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Glasgow | £29 | £221 |
| Outbuilding near Bishopbriggs | £30 | £223 |
| Outbuilding near Rutherglen | £29 | £218 |
| Outbuilding near Cambuslang | £29 | £213 |
| Outbuilding near Kirkintilloch | £29 | £218 |
| Outbuilding near Bearsden | £29 | £224 |
| Outbuilding near Giffnock | £30 | £223 |
| Outbuilding near Blantyre | £28 | £207 |
| Outbuilding near East Dunbartonshire | £30 | £221 |
| Outbuilding near Renfrew | £29 | £224 |
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 - £17,507

Two storey extension - £88,011

Build a timber frame extension - £26,007

Build a swimming pool - £81,007

Single storey extension - £55,144

Side return extension - £41,581

Install an RSJ - £2,207

Outbuilding - £10,007

Build a Mansard loft conversion - £52,007

Loft conversion - £33,818

Build a kitchen extension - £42,007

Hip to gable loft conversion - £42,007

Granny annexe - £87,007

Garden office - £10,007

Convert a Garage - £16,007

Garage - £18,507

Build a flat roof extension - £22,007

Build a dormer loft conversion - £42,007

Concrete foundations - £6,257

Convert a bungalow loft - £29,007

Convert a basement - £37,581