From £21,760
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £21,304
John Scarisbrick
Local reliable family business
Free estimates
Clean friendly service
From £22,000
Urban Select Construction is a trusted extension builder serving customers in L39 and the surrounding area. Contact us to today to get a competitiv...

A flat roof extension ranges from the cheapest of £21,304 (John Scarisbrick based in L39) to the dearest of £22,000 (Urban Select Construction based in L39), 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 L39 by posting a job with HaMuch. We'll send it to extension builders in L39.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Ormskirk | £29 | £206 |
| Build A Flat Roof Extension near West Lancashire | £28 | £203 |
| Build A Flat Roof Extension near Maghull | £33 | £220 |
| Build A Flat Roof Extension near Skelmersdale | £28 | £210 |
| Build A Flat Roof Extension near Kirkby | £31 | £224 |
| Build A Flat Roof Extension near Southport | £27 | £198 |
| Build A Flat Roof Extension near Formby | £23 | £162 |
| Build A Flat Roof Extension near Sefton | £33 | £221 |
| Build A Flat Roof Extension near Crosby | £33 | £223 |
| Build A Flat Roof Extension near Orrell | £29 | £214 |
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 - £17,188

Two storey extension - £87,532

Build a timber frame extension - £25,688

Build a swimming pool - £80,688

Single storey extension - £48,760

Side return extension - £37,990

Install an RSJ - £1,888

Outbuilding - £9,688

Build a Mansard loft conversion - £51,688

Loft conversion - £30,825

Build a kitchen extension - £41,688

Hip to gable loft conversion - £41,688

Granny annexe - £86,688

Garden office - £9,688

Convert a Garage - £15,688

Garage - £18,188

Build a flat roof extension - £21,688

Build a dormer loft conversion - £41,688

Concrete foundations - £5,938

Convert a bungalow loft - £28,688

Convert a basement - £33,990