Build a single storey extension in Crymych from £40,920

Single storey extension cost in Crymych - Sort by rates or availability

Max Sandford & San

From £47,320

(last active 14/09/26)

Location

Carmarthen, SA31

Need to find an Extension Builder near you for all your extension buildering work?

Max Sandford & San provides a local, trusted extension b...

G.I Davies & Son

From £46,520

(last active 14/09/26)

Location

Llanegwad, SA32

Need to find an Extension Builder near you for all your extension buildering work?

G.I Davies & Son provides a local, trusted extension bui...

Shane Griffiths & Son Ltd

From £50,840

(last active 23/04/26)

Location

Llandysul, SA44

Shane Griffiths & Son Ltd is a trusted extension builder serving customers in Crymych and the surrounding area. Contact us to today to get a compet...

DERI BROWN T/A D Brown Building Services

From £40,920

(last active 27/10/25)

Location

Troedyraur, SA44

Hi my name is Deri

I'm a friendly and reliable and have over 20 yes experience in the building trade. And also come from a family backgr...

F & E Construction

From £49,720

Location

Meidrim, SA33

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

D&O Construction Ltd

From £41,400

Location

Nolton, SA62

Relax... you have found a reliable extension builder in Crymych. D&O Construction Ltd is a friendly and reliable company based in Crymych who consi...

Norton Construction

From £43,640

Location

Ceredigion, SA43

Relax... you have found a reliable extension builder in Crymych. Norton Construction is a friendly and reliable company based in Crymych who consid...

N Morgans & Son Ltd

From £53,720

Location

Carmarthen, SA33

Need to find an Extension Builder near you for all your extension buildering work?

N Morgans & Son Ltd provides a local, trusted extension ...

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

Estimates for single storey extension near Crymych

Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Single Storey Extension near Carmarthenshire£26£205
Single Storey Extension near Carmarthen£26£205
Single Storey Extension near Pembrokeshire£19£163
Single Storey Extension near Milford Haven£18£159
Single Storey Extension near Llanelli£29£231
Single Storey Extension near Gorseinon£29£228
Single Storey Extension near Swansea£29£230

Estimates for common extension builder jobs in Crymych;

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 - £17,088

Two storey extension

Two storey extension - £87,382

Build a timber frame extension

Build a timber frame extension - £25,588

Build a swimming pool

Build a swimming pool - £80,588

Single storey extension

Single storey extension - £46,760

Side return extension

Side return extension - £36,865

Install an RSJ

Install an RSJ - £1,788

Outbuilding

Outbuilding - £9,588

Build a Mansard loft conversion

Build a Mansard loft conversion - £51,588

Loft conversion

Loft conversion - £29,888

Build a kitchen extension

Build a kitchen extension - £41,588

Hip to gable loft conversion

Hip to gable loft conversion - £41,588

Granny annexe

Granny annexe - £86,588

Garden office

Garden office - £9,588

Convert a Garage

Convert a Garage - £15,588

Garage

Garage - £18,088

Build a flat roof extension

Build a flat roof extension - £21,588

Build a dormer loft conversion

Build a dormer loft conversion - £41,588

Concrete foundations

Concrete foundations - £5,838

Convert a bungalow loft

Convert a bungalow loft - £28,588

Convert a basement

Convert a basement - £32,865

More extensions & conversions cost guides...