Range from the cheapest single storey extension £16,600 (Hertfordshire brickwork based in Hp1) to the dearest single storey extension £55,000 (EB Construction & Building Ltd based in HP2).
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 Hp27s by posting a job with HaMuch and we will send it to extension builders in Hp27s.

"Single storey extension"
HEMEL HEMPSTEAD
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Hemel Hempstead | £36 | £232 |
| Single Storey Extension near Dacorum | £36 | £232 |
| Single Storey Extension near St Albans | £52 | £246 |
| Single Storey Extension near Harpenden | £70 | £264 |
| Single Storey Extension near Berkhamsted | £35 | £227 |
| Single Storey Extension near Luton | £37 | £240 |
| Single Storey Extension near Dunstable | £36 | £235 |
| Single Storey Extension near Chesham | £36 | £237 |
| Single Storey Extension near Hatfield | £53 | £244 |
| Single Storey Extension near Watford | £37 | £239 |