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...
Need an Extension Builder in St Helens? KMC Brickwork has been helping local clients (20 mile radius) with their extension buildering jobs for many...
Mark Robinson
Trusted and professional extension builder in St Helens. Experienced in all extension buildering work and keeping within budget and on quote. M L R...
G. Finnigan Builders is an established extension buildering business in St Helens. We come highly recommended and provide competitive quotes for yo...
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...

Outbuilding costs in St Helens range from the cheapest of £9,552 (Liverpool Builder based in L12) to the dearest of £9,936 (P & P Building Services based in L11), 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 St Helens by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near St Helens | £31 | £224 |
| Outbuilding near Prescot | £31 | £223 |
| Outbuilding near Knowsley | £31 | £222 |
| Outbuilding near Newton-le-Willows | £31 | £221 |
| Outbuilding near Huyton with Roby | £31 | £225 |
| Outbuilding near Ashton-in-Makerfield | £30 | £220 |
| Outbuilding near Widnes | £31 | £220 |
| Outbuilding near Golborne | £30 | £222 |
| Outbuilding near Orrell | £29 | £214 |
| Outbuilding near Kirkby | £31 | £224 |
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 - £17,221

Two storey extension - £87,581

Build a timber frame extension - £25,721

Build a swimming pool - £80,721

Single storey extension - £49,416

Side return extension - £38,359

Install an RSJ - £1,921

Outbuilding - £9,721

Build a Mansard loft conversion - £51,721

Loft conversion - £31,133

Build a kitchen extension - £41,721

Hip to gable loft conversion - £41,721

Granny annexe - £86,721

Garden office - £9,721

Convert a Garage - £15,721

Garage - £18,221

Build a flat roof extension - £21,721

Build a dormer loft conversion - £41,721

Concrete foundations - £5,971

Convert a bungalow loft - £28,721

Convert a basement - £34,359