Range from the cheapest single storey extension £43,800 (Toni build ltd based in RM10) to the dearest single storey extension £55,000 (Premier Roughcast ,Coatings Specialists based in ML11).
Comparing extension builders estimates for fitting a downstairs toilet gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to build a single storey extension in Biggar by posting a job with HaMuch and we will send it to extension builders in Biggar.

| Business name | Single storey extension cost |
|---|---|
| Premier Roughcast ,Coatings Specialists, Rigside, Lanark, ML11 | £55,000 |
| SKED CONSTRUCTION LTD, Lanark, ML11 | £47,800 |
| Toni build ltd, Dagenham , RM10 | £43,800 |
| Clyde Windows And Construction Limited, Block 2, Unit 10, Larkhall Industrial Es, ML9 | £47,160 |
| BURNSIDE DESIGN & BUILD LTD, Strathaven, ML10 | £48,760 |
| Kirkfields Contracts, West Calder, EH55 | £50,520 |
| Mackenzie Contracts, West Calder, EH55 | £50,520 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near South Lanarkshire | £27 | £205 |
| Single Storey Extension near Larkhall | £28 | £211 |
| Single Storey Extension near Wishaw | £26 | £204 |
| Single Storey Extension near Motherwell | £27 | £199 |
| Single Storey Extension near Livingston | £29 | £218 |
| Single Storey Extension near Bathgate | £25 | £191 |
| Single Storey Extension near Penicuik | £31 | £232 |
| Single Storey Extension near West Lothian | £28 | £209 |
| Single Storey Extension near Bellshill | £27 | £205 |
| Single Storey Extension near North Lanarkshire | £27 | £208 |