Extension builder estimates (based on hourly rates) to build a single storey extension in Londonderry
Range from the cheapest single storey extension £37680 (Taggart Homes - The Designer Builder based in BT47) to the dearest single storey extension £42000 (JAMSE CONSTRUCTION LTD based in BT47).
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 Londonderry by posting a job with HaMuch and we will send it to extension builders in Londonderry.
Estimates for common extension builder jobs in Londonderry;
| Job | Estimate |
| Underpinning a house | £16950 |
| Build a two storey extension | £87174 |
| Build a timber frame extension | £25450 |
| Install a swimming pool | £80450 |
| Cost to build a single storey extension | £38992 |
| Cost to build a side return extension | £31308 |
| Install an RSJ | £1650 |
| Build an outbuilding | £9450 |
| Build a mansard loft conversion | £51450 |
| Cost of a loft conversion | £28590 |
| Build a kitchen extension | £41450 |
| Build a hip to gable loft conversion | £41450 |
| Build a granny annexe | £86450 |
| Build a garden office | £9450 |
| Convert a garage | £15450 |
| Build a new garage | £17950 |
| Build a flat roof extension | £21450 |
| Build a dormer loft conversion | £41450 |
| Lay a concrete foundation | £5700 |
| Convert a bungalow loft | £28450 |
| Basement conversion cost | £31308 |
Rates for other Londonderry trades
Single storey extension cost in Londonderry
| Business name | Single storey extension cost |
|---|---|
| Taggart Homes - The Designer Builder, Londonderry, BT47 | £37680 |
| JAMSE CONSTRUCTION LTD, Londonderry, BT47 | £42000 |
| Tyrone Turbos, Tyrone, BT82 | £37680 |
| Luxury Garden Studios, Londonderry, BT47 | £38640 |
| SF Carpentry, Londonderry, BT51 | £38960 |