Extension builder estimates (based on hourly rates) to build a single storey extension in Belfast
Range from the cheapest single storey extension £26000 (R L Contracts based in BT36) to the dearest single storey extension £42000 (Browns Joinery based in BT29).
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 Belfast by posting a job with HaMuch and we will send it to extension builders in Belfast.
Estimates for common extension builder jobs in Belfast;
| Job | Estimate |
| Underpinning a house | £16631 |
| Build a two storey extension | £86696 |
| Build a timber frame extension | £25131 |
| Install a swimming pool | £80131 |
| Cost to build a single storey extension | £32613 |
| Cost to build a side return extension | £27720 |
| Install an RSJ | £1331 |
| Build an outbuilding | £9131 |
| Build a mansard loft conversion | £51131 |
| Cost of a loft conversion | £25600 |
| Build a kitchen extension | £41131 |
| Build a hip to gable loft conversion | £41131 |
| Build a granny annexe | £86131 |
| Build a garden office | £9131 |
| Convert a garage | £15131 |
| Build a flat roof extension | £21131 |
| Build a dormer loft conversion | £41131 |
| Lay a concrete foundation | £5381 |
| Convert a bungalow loft | £28131 |
| Basement conversion cost | £27720 |
Rates for other Belfast trades
Extension Builders in Belfast
| Business name | Single storey extension cost |
|---|---|
| Extended living by Gilbert-Ash, 47 Boucher Road, Belfast, BT12 | £31440 |
| McM Joinery , Belfast , BT36 | £29200 |
| AK Building Services, , BT8 | £33040 |
| R L Contracts, Newtownabbey, BT36 | £26000 |
| DGA, Antrim, BT37 | £33200 |
| Browns Joinery, Crumlin, BT29 | £42000 |
| apex pharaoh ltd, Down, bt30 | £32720 |
| N W Doyle & Son, Ballynahinch, BT24 | £34000 |
| R.J Builders, , BT67 | £32880 |
| PC Building, , BT67 | £33200 |
| Anak , larne, BT40 | £29200 |
| The Method Group, Gibson's Hill, Craigavon, BT66 | £34480 |