From £21,472
Trusted and professional extension builder in Halton. Experienced in all extension buildering work and keeping within budget and on quote. Jones La...
From £21,672
J.M.C Building Services is a trusted extension builder serving customers in Halton and the surrounding area. Contact us to today to get a competiti...
From £21,776
Relax... you have found a reliable extension builder in Halton. David Anderson Builders is a friendly and reliable company based in Halton who cons...
From £22,032
Tong Building & Joinery Ltd are here to help customers who need an Extension Builder in Halton. We offer a competitive rate to complete all your ex...
From £22,056
AJ Solutions is an established extension buildering business in Halton. We come highly recommended and provide competitive quotes for your work.
From £21,632
Fishers Building & Paving Ltd is an established extension buildering business in Halton. We come highly recommended and provide competitive quotes ...
From £21,712
Here at RC Building Services Ltd we pride ourselves on providing reliable, excellent quality and competitively priced building services. Our priori...
From £21,976
Nathan Thomas Plumbing is an established extension buildering business in Halton. We come highly recommended and provide competitive quotes for you...
From £21,608
Relax... you have found a reliable extension builder in Halton. R A C Gas is a friendly and reliable company based in Halton who consider no job as...
From £21,696
G P Roofing & Building Service is a trusted extension builder serving customers in Halton and the surrounding area. Contact us to today to get a co...

A flat roof extension ranges from the cheapest of £21,472 (Jones Landscaping based in L30) to the dearest of £22,056 (AJ Solutions based in CH1), 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 Halton by posting a job with HaMuch. We'll send it to extension builders in Halton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Halton | £31 | £220 |
| Build A Flat Roof Extension near Widnes | £31 | £220 |
| Build A Flat Roof Extension near Runcorn | £33 | £228 |
| Build A Flat Roof Extension near Huyton with Roby | £31 | £225 |
| Build A Flat Roof Extension near Warrington | £31 | £222 |
| Build A Flat Roof Extension near Prescot | £31 | £223 |
| Build A Flat Roof Extension near Knowsley | £31 | £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 Ellesmere Port | £31 | £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 - £17,263

Two storey extension - £87,645

Build a timber frame extension - £25,763

Build a swimming pool - £80,763

Single storey extension - £50,264

Side return extension - £38,836

Install an RSJ - £1,963

Outbuilding - £9,763

Build a Mansard loft conversion - £51,763

Loft conversion - £31,530

Build a kitchen extension - £41,763

Hip to gable loft conversion - £41,763

Granny annexe - £86,763

Garden office - £9,763

Convert a Garage - £15,763

Garage - £18,263

Build a flat roof extension - £21,763

Build a dormer loft conversion - £41,763

Concrete foundations - £6,013

Convert a bungalow loft - £28,763

Convert a basement - £34,836