Range from the cheapest single storey extension £39,000 (JDL Contracts based in BT34) to the dearest single storey extension £43,320 (G K Contracts Building & Joinery based in BT32).
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 Kilkeel by posting a job with HaMuch and we will send it to extension builders in Kilkeel.

| Business name | Single storey extension cost |
|---|---|
| JDL Contracts, Newry, BT34 | £39,000 |
| Ballygrange Contracts, Down, BT34 | £40,600 |
| G K Contracts Building & Joinery, Banbridge, BT32 | £43,320 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Kilkeel | £24 | £155 |
| Single Storey Extension near Ballynahinch | £15 | £150 |
| Single Storey Extension near Saintfield | £20 | £141 |
| Single Storey Extension near Waringstown | £21 | £146 |
| Single Storey Extension near Portaferry | £20 | £150 |
| Single Storey Extension near Hillsborough and Culcavy | £21 | £141 |
| Single Storey Extension near Craigavon | £22 | £170 |