From £21,800
Higher End Construction Limited is an established extension buildering business in WN5. We come highly recommended and provide competitive quotes f...
From £21,600
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,984
Trusted and professional extension builder in WN5. Experienced in all extension buildering work and keeping within budget and on quote. JCR Constru...
From £21,776
Relax... you have found a reliable extension builder in WN5. Jc Properties is a friendly and reliable company based in WN5 who consider no job as t...
From £21,720
Direct Building Services is an established and experienced local extension builder in WN5. Please contact us for a free, no obligation quote and co...
From £21,704
Need to find an Extension Builder near you for all your extension buildering work?
NJD Joinery provides a local, trusted extension builderi...
From £21,744
Need to find an Extension Builder near you for all your extension buildering work?
C.K. Installations (North West) Limited provides a local...
From £21,208
Need an Extension Builder in WN5? MND Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £21,224
MJ Barker & Son is an established extension buildering business in WN5. We come highly recommended and provide competitive quotes for your work.
From £21,608
Trusted and professional extension builder in WN5. Experienced in all extension buildering work and keeping within budget and on quote. M L R Build...

A flat roof extension ranges from the cheapest of £21,208 (MND Building Services Ltd based in WN6) to the dearest of £21,984 (JCR Construction based in WN6), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in WN5 by posting a job with HaMuch. We'll send it to extension builders in WN5.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Orrell | £29 | £214 |
| Build A Flat Roof Extension near Wigan | £30 | £219 |
| Build A Flat Roof Extension near Ashton-in-Makerfield | £30 | £220 |
| Build A Flat Roof Extension near Skelmersdale | £29 | £211 |
| Build A Flat Roof Extension near Hindley | £30 | £218 |
| Build A Flat Roof Extension near Golborne | £30 | £222 |
| Build A Flat Roof Extension near St Helens | £31 | £224 |
| Build A Flat Roof Extension near Newton-le-Willows | £31 | £221 |
| Build A Flat Roof Extension near Westhoughton | £31 | £222 |
| Build A Flat Roof Extension near Leigh | £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 - £17,137

Two storey extension - £87,455

Build a timber frame extension - £25,637

Build a swimming pool - £80,637

Single storey extension - £47,736

Side return extension - £37,414

Install an RSJ - £1,837

Outbuilding - £9,637

Build a Mansard loft conversion - £51,637

Loft conversion - £30,345

Build a kitchen extension - £41,637

Hip to gable loft conversion - £41,637

Granny annexe - £86,637

Garden office - £9,637

Convert a Garage - £15,637

Garage - £18,137

Build a flat roof extension - £21,637

Build a dormer loft conversion - £41,637

Concrete foundations - £5,887

Convert a bungalow loft - £28,637

Convert a basement - £33,414