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John Jines
Caernarfon, LL54
Building & Flat Roofing Contractors is a trusted extension builder serving customers in Caernarfon and the surrounding area. Contact us to today to...

Outbuilding costs in Caernarfon range from the cheapest of £9,256 (Building & Flat Roofing Contractors based in LL54) to the dearest of £9,256 (Building & Flat Roofing Contractors based in LL54), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in Caernarfon by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Conwy | £28 | £211 |
| Outbuilding near Conway | £28 | £211 |
| Outbuilding near Llandudno | £28 | £211 |
| Outbuilding near Colwyn Bay | £28 | £211 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £16,756

Two storey extension - £86,884

Build a timber frame extension - £25,256

Build a swimming pool - £80,256

Single storey extension - £40,120

Side return extension - £33,130

Install an RSJ - £1,456

Outbuilding - £9,256

Build a Mansard loft conversion - £51,256

Loft conversion - £26,775

Build a kitchen extension - £41,256

Hip to gable loft conversion - £41,256

Granny annexe - £86,256

Garden office - £9,256

Convert a Garage - £15,256

Garage - £17,756

Build a flat roof extension - £21,256

Build a dormer loft conversion - £41,256

Concrete foundations - £5,506

Convert a bungalow loft - £28,256

Convert a basement - £29,130