Range from the cheapest single storey extension £36,600 (Building & Flat Roofing Contractors based in LL54) 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 Pentraeth by posting a job with HaMuch and we will send it to extension builders in Pentraeth.

| Business name | Single storey extension cost |
|---|---|
| Property Maintenance Solutions, Benllech , LL74 | £40,600 |
| Hughes Construction, Bangor, LL57 | £41,720 |
| Balmoral joinery/construction , Gaerwen gwynedd , LL60 | £41,880 |
| W F CLAYTON & CO LTD, Bangor, LL57 | £47,000 |
| Glyndwr Roofing & Building Services, Holyhead, LL65 | £41,400 |
| Building & Flat Roofing Contractors, Caernarfon, LL54 | £36,600 |
| UK Leisure Living Ltd, Unit 8, The Old Creamery, Station Road, , LL28 | £42,680 |
| G & D Jones Ltd, Abergele, LL22 | £55,000 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Conwy | £26 | £212 |
| Single Storey Extension near Conway | £22 | £173 |
| Single Storey Extension near Llandudno | £22 | £173 |
| Single Storey Extension near Colwyn Bay | £26 | £212 |