Mark Robinson
Trusted and professional extension builder in Rainhill. 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 Rainhill. We come highly recommended and provide competitive quotes for you...
Need an Extension Builder in Rainhill? KMC Brickwork has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
J.M.C Building Services is a trusted extension builder serving customers in Rainhill and the surrounding area. Contact us to today to get a competi...
Peter Gallagher
Experienced extension builder ready to quote for your work. P & P Building Services is the best extension builder in Rainhill. No obligation free q...
Liverpool Builder is an established extension buildering business in Rainhill. We come highly recommended and provide competitive quotes for your w...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
J J Nuttall Specialist Roofing Ltd are here to help customers who need an Extension Builder in Rainhill. We offer a competitive rate to complete al...
Relax... you have found a reliable extension builder in Rainhill. R Sargeant is a friendly and reliable company based in Rainhill who consider no j...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

In Rainhill, prices for dormer loft conversions range from £41,552 (Liverpool Builder based in L12) to £41,936 (P & P Building Services based in L11), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.
The best way to get an accurate price is to compare quotes from extension builders in Rainhill. Post your job on HaMuch now and we'll put you in touch with available extension builders.
"Dormer loft conversion" - ST HELENS, job posted 10/02/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Dormer Loft Conversion near Huyton with Roby | £31 | £225 |
| Build A Dormer Loft Conversion near Prescot | £31 | £223 |
| Build A Dormer Loft Conversion near Knowsley | £31 | £222 |
| Build A Dormer Loft Conversion near Widnes | £31 | £220 |
| Build A Dormer Loft Conversion near St Helens | £31 | £224 |
| Build A Dormer Loft Conversion near Halton | £31 | £220 |
| Build A Dormer Loft Conversion near Kirkby | £31 | £224 |
| Build A Dormer Loft Conversion near Runcorn | £33 | £228 |
| Build A Dormer Loft Conversion near Newton-le-Willows | £31 | £221 |
| Build A Dormer Loft Conversion near Warrington | £31 | £222 |
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 - £17,236

Two storey extension - £87,604

Build a timber frame extension - £25,736

Build a swimming pool - £80,736

Single storey extension - £49,720

Side return extension - £38,530

Install an RSJ - £1,936

Outbuilding - £9,736

Build a Mansard loft conversion - £51,736

Loft conversion - £31,275

Build a kitchen extension - £41,736

Hip to gable loft conversion - £41,736

Granny annexe - £86,736

Garden office - £9,736

Convert a Garage - £15,736

Garage - £18,236

Build a flat roof extension - £21,736

Build a dormer loft conversion - £41,736

Concrete foundations - £5,986

Convert a bungalow loft - £28,736

Convert a basement - £34,530