Range from the cheapest single storey extension £31600 (Building & Flat Roofing Contractors based in LL54) to the dearest single storey extension £42000 (W F CLAYTON & CO LTD based in LL57).
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 Trefriw by posting a job with HaMuch and we will send it to extension builders in Trefriw.
Job | Estimate |
Underpinning a house | £16878 |
Build a two storey extension | £87067 |
Build a timber frame extension | £25378 |
Install a swimming pool | £80378 |
Cost to build a single storey extension | £37556 |
Cost to build a side return extension | £30500 |
Install an RSJ | £1578 |
Build an outbuilding | £9378 |
Build a mansard loft conversion | £51378 |
Cost of a loft conversion | £27917 |
Build a kitchen extension | £41378 |
Build a hip to gable loft conversion | £41378 |
Build a granny annexe | £86378 |
Build a garden office | £9378 |
Convert a garage | £15378 |
Build a new garage | £17878 |
Build a flat roof extension | £21378 |
Build a dormer loft conversion | £41378 |
Lay a concrete foundation | £5628 |
Convert a bungalow loft | £28378 |
Basement conversion cost | £30500 |
Business name | Single storey extension cost |
---|---|
UK Leisure Living Ltd, Unit 8, The Old Creamery, Station Road, , LL28 | £37680 |
W F CLAYTON & CO LTD, Bangor, LL57 | £42000 |
Hughes Construction, , LL57 | £36720 |
S ROBERTS ROOFING, , LL22 | £37680 |
Richardson Joinery & Builders, , LL22 | £38800 |
Octagon Construction Ltd, Rhyl, LL18 | £37200 |
Brothers Construction, , LL18 | £39440 |
Balmoral joinery/construction , Gaerwen gwynedd , LL60 | £36880 |
Building & Flat Roofing Contractors, Caernarfon, LL54 | £31600 |