Extension builder estimates (based on hourly rates) to build a single storey extension in FK18
Range from the cheapest single storey extension £36400 (CALLANDER JOINERS AND BUILDERS based in FK17) to the dearest single storey extension £43600 (DEREK SAUNDERS BUILDERS based in PH7).
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 FK18 by posting a job with HaMuch and we will send it to extension builders in FK18.
Estimates for common extension builder jobs in FK18;
| Job | Estimate |
| Underpinning a house | £17000 |
| Build a two storey extension | £87250 |
| Build a timber frame extension | £25500 |
| Install a swimming pool | £80500 |
| Cost to build a single storey extension | £40000 |
| Cost to build a side return extension | £31875 |
| Install an RSJ | £1700 |
| Build an outbuilding | £9500 |
| Build a mansard loft conversion | £51500 |
| Cost of a loft conversion | £29063 |
| Build a kitchen extension | £41500 |
| Build a hip to gable loft conversion | £41500 |
| Build a granny annexe | £86500 |
| Build a garden office | £9500 |
| Convert a garage | £15500 |
| Build a new garage | £18000 |
| Build a flat roof extension | £21500 |
| Build a dormer loft conversion | £41500 |
| Lay a concrete foundation | £5750 |
| Convert a bungalow loft | £28500 |
| Basement conversion cost | £31875 |
Rates for other FK18 trades
Extension Builders in FK18
| Business name | Single storey extension cost |
|---|---|
| CALLANDER JOINERS AND BUILDERS, , FK17 | £36400 |
| DAVID MCALPINE BUILDING SVS, , FK16 | £41200 |
| DEREK SAUNDERS BUILDERS, , PH7 | £43600 |
| Joinery, Stirling , FK9 | £38800 |