Range from the cheapest single storey extension £31600 (Building & Flat Roofing Contractors based in LL54) to the dearest single storey extension £34000 (W A Mitchell based in LL54).
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 Harlech by posting a job with HaMuch and we will send it to extension builders in Harlech.
Job | Estimate |
Underpinning a house | £16633 |
Build a two storey extension | £86700 |
Build a timber frame extension | £25133 |
Install a swimming pool | £80133 |
Cost to build a single storey extension | £32667 |
Cost to build a side return extension | £27750 |
Install an RSJ | £1333 |
Build an outbuilding | £9133 |
Build a mansard loft conversion | £51133 |
Cost of a loft conversion | £25625 |
Build a kitchen extension | £41133 |
Build a hip to gable loft conversion | £41133 |
Build a granny annexe | £86133 |
Build a garden office | £9133 |
Convert a garage | £15133 |
Build a new garage | £17633 |
Build a flat roof extension | £21133 |
Build a dormer loft conversion | £41133 |
Lay a concrete foundation | £5383 |
Convert a bungalow loft | £28133 |
Basement conversion cost | £27750 |
Business name | Single storey extension cost |
---|---|
WJ Builders, Pwllheli, LL53 | £32400 |
W A Mitchell, Caernarfon, LL54 | £34000 |
Building & Flat Roofing Contractors, Caernarfon, LL54 | £31600 |