G. Finnigan Builders is an established extension buildering business in L35. We come highly recommended and provide competitive quotes for your wor...
From £22,304
Stephen Waddup
Experienced extension builder ready to quote for your work. Spectrum is the best extension builder in L35. No obligation free quotes and many happy...
From £21,800
Event planning interior designer new to buisness platform but have project managed a lot of my own home projects and organised events for birthdays...
From £21,896
HIGHTOWN CONSTRUCTION LTD is an established extension buildering business in L35. We come highly recommended and provide competitive quotes for you...

A flat roof extension ranges from the cheapest of £21,800 (Freyaroseofficiallimited based in L36) to the dearest of £22,304 (Spectrum based in L14), 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 L35 by posting a job with HaMuch. We'll send it to extension builders in L35.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Huyton with Roby | £31 | £225 |
| Build A Flat Roof Extension near Prescot | £31 | £223 |
| Build A Flat Roof Extension near Knowsley | £31 | £222 |
| Build A Flat Roof Extension near Widnes | £31 | £220 |
| Build A Flat Roof Extension near St Helens | £31 | £224 |
| Build A Flat Roof Extension near Halton | £31 | £220 |
| Build A Flat Roof Extension near Kirkby | £31 | £224 |
| Build A Flat Roof Extension near Runcorn | £33 | £228 |
| Build A Flat Roof Extension near Newton-le-Willows | £31 | £221 |
| Build A Flat Roof Extension 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 - £17,487

Two storey extension - £87,981

Build a timber frame extension - £25,987

Build a swimming pool - £80,987

Single storey extension - £54,744

Side return extension - £41,356

Install an RSJ - £2,187

Outbuilding - £9,987

Build a Mansard loft conversion - £51,987

Loft conversion - £33,630

Build a kitchen extension - £41,987

Hip to gable loft conversion - £41,987

Granny annexe - £86,987

Garden office - £9,987

Convert a Garage - £15,987

Garage - £18,487

Build a flat roof extension - £21,987

Build a dormer loft conversion - £41,987

Concrete foundations - £6,237

Convert a bungalow loft - £28,987

Convert a basement - £37,356