Range from the cheapest single storey extension £43,000 (Chris Rollafson Building based in CO2) to the dearest single storey extension £53,400 (Kingston & Collins Ltd based in CO5).
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 CO7 by posting a job with HaMuch and we will send it to extension builders in CO7.

"Single storey extension"
CO4
" Basic 3 metre by 4 metre single extension to back of house "
COLCHESTER
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Tendring | £27 | £195 |
| Single Storey Extension near Colchester | £29 | £200 |
| Single Storey Extension near Clacton-on-Sea | £26 | £197 |
| Single Storey Extension near Harwich | £28 | £207 |
| Single Storey Extension near Ipswich | £28 | £202 |
| Single Storey Extension near Felixstowe | £27 | £203 |
| Single Storey Extension near Maldon | £32 | £212 |
| Single Storey Extension near Witham | £31 | £209 |
| Single Storey Extension near Sudbury | £30 | £208 |
| Single Storey Extension near Braintree | £32 | £218 |