Range from the cheapest single storey extension £43,000 (Darlington Building Services based in DL1) to the dearest single storey extension £55,000 (EU Radici Ltd based in DL17).
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 TS21 by posting a job with HaMuch and we will send it to extension builders in TS21.

| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Stockton-on-Tees | £35 | £201 |
| Single Storey Extension near Billingham | £37 | £208 |
| Single Storey Extension near Newton Aycliffe | £40 | £207 |
| Single Storey Extension near Thornaby-on-Tees | £36 | £202 |
| Single Storey Extension near Middlesbrough | £36 | £202 |
| Single Storey Extension near Ingleby Barwick | £36 | £202 |
| Single Storey Extension near Spennymoor | £37 | £223 |
| Single Storey Extension near Darlington | £53 | £194 |
| Single Storey Extension near Hartlepool | £35 | £204 |
| Single Storey Extension near Peterlee | £31 | £194 |