Build a single storey extension in Criccieth from £40,120


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Single storey extension cost in Criccieth

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Balmoral joinery/construction

From £49,880

(last active 31/08/26)

Location

Gaerwen, LL60

Fiting of door internal/external All joinery work from new joists to fitting off skirting boards Kitchen fitting Staircase or replac...

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Building & Flat Roofing Contractors

From £40,120

(last active 05/03/26)

Location

Caernarfon, LL54

Building & Flat Roofing Contractors is a trusted extension builder serving customers in Criccieth and the surrounding area. Contact us to today to ...

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WJ Builders

From £43,640

Location

Pwllheli, LL53

WJ Builders is an established and experienced local extension builder in Criccieth. Please contact us for a free, no obligation quote and competiti...

Extension builder estimates (based on hourly rates) to build a single storey extension in Criccieth

Estimates for single storey extension near Criccieth

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Location in UKHourly RateDaily Rate
Single Storey Extension near Conwy£28£211
Single Storey Extension near Conway£28£211
Single Storey Extension near Llandudno£28£211
Single Storey Extension near Colwyn Bay£28£211

Estimates for common extension builder jobs in Criccieth;

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

Underpin a building - £16,977

Two storey extension

Two storey extension - £87,216

Build a timber frame extension

Build a timber frame extension - £25,477

Build a swimming pool

Build a swimming pool - £80,477

Single storey extension

Single storey extension - £44,547

Side return extension

Side return extension - £35,620

Install an RSJ

Install an RSJ - £1,677

Outbuilding

Outbuilding - £9,477

Build a Mansard loft conversion

Build a Mansard loft conversion - £51,477

Loft conversion

Loft conversion - £28,850

Build a kitchen extension

Build a kitchen extension - £41,477

Hip to gable loft conversion

Hip to gable loft conversion - £41,477

Granny annexe

Granny annexe - £86,477

Garden office

Garden office - £9,477

Convert a Garage

Convert a Garage - £15,477

Garage

Garage - £17,977

Build a flat roof extension

Build a flat roof extension - £21,477

Build a dormer loft conversion

Build a dormer loft conversion - £41,477

Concrete foundations

Concrete foundations - £5,727

Convert a bungalow loft

Convert a bungalow loft - £28,477

Convert a basement

Convert a basement - £31,620

More extensions & conversions cost guides...