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P ALLEN BUILDERS is an established and experienced local extension builder in CF38. Please contact us for a free, no obligation quote and competiti...
Relax... you have found a reliable extension builder in CF38. WESTGATE BUILDING SERVICES LTD is a friendly and reliable company based in CF38 who c...
General Building and Property Renovation Specialists A family business since Based in South Wales We specialise in all aspects of residential build...
Paul Goode
Need to find an Extension Builder near you for all your extension buildering work?
GOODE BUILDING SERVICES provides a local, trusted extens...
From £87,424
EXTEND & BUILD LTD is an established and experienced local extension builder in CF38. Please contact us for a free, no obligation quote and competi...

Costs range from £87,328 (P ALLEN BUILDERS based in CF37) to £87,892 (GOODE BUILDING SERVICES based in CF83), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to CF38.
"Two storey side return extension" - CF72, job posted 11/02/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Church Village | £34 | £214 |
| Two Storey Extension near Pontypridd | £33 | £211 |
| Two Storey Extension near Caerphilly | £33 | £208 |
| Two Storey Extension near Rhondda | £31 | £206 |
| Two Storey Extension near Rhondda, Cynon, Taff | £31 | £209 |
| Two Storey Extension near Cardiff | £34 | £223 |
| Two Storey Extension near Risca | £32 | £218 |
| Two Storey Extension near Penarth | £35 | £224 |
| Two Storey Extension near Barry | £33 | £223 |
| Two Storey Extension near Bridgend | £32 | £200 |
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 - £17,199

Two storey extension - £87,549

Build a timber frame extension - £25,699

Build a swimming pool - £80,699

Single storey extension - £48,984

Side return extension - £38,116

Install an RSJ - £1,899

Outbuilding - £9,699

Build a Mansard loft conversion - £51,699

Loft conversion - £30,930

Build a kitchen extension - £41,699

Hip to gable loft conversion - £41,699

Granny annexe - £86,699

Garden office - £9,699

Convert a Garage - £15,699

Garage - £18,199

Build a flat roof extension - £21,699

Build a dormer loft conversion - £41,699

Concrete foundations - £5,949

Convert a bungalow loft - £28,699

Convert a basement - £34,116