Range from the cheapest single storey extension £48,440 (Darsan Groundworks Ltd based in CM3) to the dearest single storey extension £55,000 (Mr. based in CM1).
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 CM2 by posting a job with HaMuch and we will send it to extension builders in CM2.

"Single storey extension"
CHELMSFORD
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Chelmsford | £33 | £224 |
| Single Storey Extension near Billericay | £34 | £218 |
| Single Storey Extension near Wickford | £34 | £224 |
| Single Storey Extension near Witham | £31 | £209 |
| Single Storey Extension near Maldon | £32 | £212 |
| Single Storey Extension near Brentwood | £34 | £225 |
| Single Storey Extension near Basildon | £34 | £220 |
| Single Storey Extension near Rayleigh | £34 | £221 |
| Single Storey Extension near Braintree | £32 | £218 |
| Single Storey Extension near Thundersley | £34 | £221 |