Range from the cheapest single storey extension £39,000 (Ian Groves based in CA12) to the dearest single storey extension £55,000 (Cmr Developments based in CA2).
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 United Kingdom by posting a job with HaMuch and we will send it to extension builders in United Kingdom.

| Business name | Single storey extension cost |
|---|---|
| M & K BUILDERS KESWICK LIMITED, Keswick, CA12 | £41,240 |
| Ian Groves, Penrith , CA12 | £39,000 |
| PAUL LITTLE BUILDING MAINT, Wigton, CA7 | £39,480 |
| STAN MARTIN T/A, Frizington, CA26 | £47,000 |
| William king Construction, Jacktrees Road, Cleator moor, Cumbria CA25 5B, CA25 | £42,680 |
| ASKEW CONSTRUCTION, Wetheral, CA4 | £39,000 |
| M c trading, Cumbria, Ca2 | £41,240 |
| Sc brickwork, Cumbria, CA22 | £43,960 |
| Handyman Decks Building, Londonderry, CA2 | £41,240 |
| Cmr Developments , Carlisle, CA2 | £55,000 |
| BUILDING TEC LIMITED , Carlisle South West, CA2 | £39,640 |
| maizxdesign, Cumbria, CA1 | £41,240 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Whitehaven | £18 | £185 |
| Single Storey Extension near Carlisle | £21 | £175 |
| Single Storey Extension near Dumfries | £18 | £140 |
| Single Storey Extension near Dumfries & Galloway | £18 | £140 |
| Single Storey Extension near Kendal | £24 | £200 |