Need an Extension Builder in St Helens? KMC Brickwork has been helping local clients (20 mile radius) with their extension buildering jobs for many...
Stephen Lowe
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in St Helens. Jc Properties is a friendly and reliable company based in St Helens who consider...
Peter Gallagher
Experienced extension builder ready to quote for your work. P & P Building Services is the best extension builder in St Helens. No obligation free ...
Liverpool Builder is an established extension buildering business in St Helens. We come highly recommended and provide competitive quotes for your ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
JOHN ROSS BUILDERS LTD provides a local, trusted extensi...
Relax... you have found a reliable extension builder in St Helens. R Sargeant is a friendly and reliable company based in St Helens who consider no...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Fixit Cheshire is an established and experienced local extension builder in St Helens. Please contact us for a free, no obligation quote and compet...

Costs range from £87,328 (Liverpool Builder based in L12) to £87,904 (P & P Building Services based in L11), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near St Helens | £31 | £224 |
| Two Storey Extension near Prescot | £31 | £223 |
| Two Storey Extension near Knowsley | £31 | £222 |
| Two Storey Extension near Newton-le-Willows | £31 | £221 |
| Two Storey Extension near Huyton with Roby | £31 | £225 |
| Two Storey Extension near Ashton-in-Makerfield | £30 | £220 |
| Two Storey Extension near Widnes | £31 | £220 |
| Two Storey Extension near Golborne | £30 | £222 |
| Two Storey Extension near Orrell | £29 | £214 |
| Two Storey Extension near Kirkby | £31 | £223 |
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 - £17,218

Two storey extension - £87,578

Build a timber frame extension - £25,718

Build a swimming pool - £80,718

Single storey extension - £49,368

Side return extension - £38,332

Install an RSJ - £1,918

Outbuilding - £9,718

Build a Mansard loft conversion - £51,718

Loft conversion - £31,110

Build a kitchen extension - £41,718

Hip to gable loft conversion - £41,718

Granny annexe - £86,718

Garden office - £9,718

Convert a Garage - £15,718

Garage - £18,218

Build a flat roof extension - £21,718

Build a dormer loft conversion - £41,718

Concrete foundations - £5,968

Convert a bungalow loft - £28,718

Convert a basement - £34,332