Range from the cheapest single storey extension £39,640 (D&O Construction Ltd based in SA62) to the dearest single storey extension £47,000 (Shane Griffiths & Son Ltd based in SA44).
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 Boncath by posting a job with HaMuch and we will send it to extension builders in Boncath.

| Business name | Single storey extension cost |
|---|---|
| Norton Construction, Cardigan, Ceredigion, sa43 | £43,000 |
| Shane Griffiths & Son Ltd, Llandysul, SA44 | £47,000 |
| DERI BROWN T/A D Brown Building Services , LLANDYSUL, SA44 | £40,600 |
| N Morgans & Son Ltd, Carmarthen, SA33 | £47,000 |
| F & E Construction, Meidrim, SA33 | £45,400 |
| D&O Construction Ltd, Nolton, SA62 | £39,640 |
| Max Sandford & San, Carmarthen, SA31 | £45,240 |
| G.I Davies & Son, Llanegwad, SA32 | £46,200 |
| Lippiatt Construction, Carmarthen, SA40 | £43,800 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Carmarthenshire | £24 | £191 |
| Single Storey Extension near Carmarthen | £24 | £191 |
| Single Storey Extension near Pembrokeshire | £17 | £143 |
| Single Storey Extension near Milford Haven | £15 | £134 |
| Single Storey Extension near Llanelli | £25 | £196 |
| Single Storey Extension near Gorseinon | £25 | £196 |
| Single Storey Extension near Swansea | £25 | £197 |