Range from the cheapest single storey extension £40,600 (S A Davies Sustainable Construction Limited based in CH7) to the dearest single storey extension £55,000 (G & D Jones Ltd based in LL22).
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 LL28 by posting a job with HaMuch and we will send it to extension builders in LL28.

| Business name | Single storey extension cost |
|---|---|
| UK Leisure Living Ltd, Unit 8, The Old Creamery, Station Road, , LL28 | £42,680 |
| G & D Jones Ltd, Abergele, LL22 | £55,000 |
| S ROBERTS ROOFING, Abergele, LL22 | £42,680 |
| Richardson Joinery & Builders, Abergele, LL22 | £43,800 |
| Wood floor services , Rhyl, Ll18 | £44,280 |
| Octagon Construction Ltd, Rhyl, LL18 | £42,200 |
| Brothers Construction, Rhyl, LL18 | £44,440 |
| W F CLAYTON & CO LTD, Bangor, LL57 | £47,000 |
| Hughes Construction, Bangor, LL57 | £41,720 |
| S A Davies Sustainable Construction Limited, Caerwys, CH7 | £40,600 |
| Property Maintenance Solutions, Benllech , LL74 | £40,600 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Colwyn Bay | £26 | £212 |
| Single Storey Extension near Conway | £22 | £173 |
| Single Storey Extension near Llandudno | £22 | £173 |
| Single Storey Extension near Conwy | £26 | £212 |
| Single Storey Extension near Rhyl | £24 | £178 |
| Single Storey Extension near Prestatyn | £24 | £179 |
| Single Storey Extension near Flintshire | £28 | £191 |
| Single Storey Extension near Heswall | £27 | £187 |
| Single Storey Extension near Wirral | £27 | £188 |
| Single Storey Extension near Connah's Quay | £28 | £195 |