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Northallerton, DL6
S & K Windows are here to help customers who need an Extension Builder in Northallerton. We offer a competitive rate to complete all your extension...
From £21,872
Darren Collin
Northallerton, DL7
Hi I'm darren
I'm a fully qualified time served joiner I have been doing it for 30 years and have been self employed for 12 years ...

A flat roof extension ranges from the cheapest of £21,720 (S & K Windows based in DL6) to the dearest of £21,872 (Darren Collin Joinery based in DL7), 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 Northallerton by posting a job with HaMuch. We'll send it to extension builders in Northallerton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Ingleby Barwick | £41 | £228 |
| Build A Flat Roof Extension near Thornaby-on-Tees | £42 | £231 |
| Build A Flat Roof Extension near Darlington | £60 | £222 |
| Build A Flat Roof Extension near Stockton-on-Tees | £41 | £228 |
| Build A Flat Roof Extension near Middlesbrough | £43 | £236 |
| Build A Flat Roof Extension near Eston | £42 | £241 |
| Build A Flat Roof Extension near Billingham | £44 | £242 |
| Build A Flat Roof Extension near Newton Aycliffe | £38 | £225 |
| Build A Flat Roof Extension near Redcar & Cleveland | £43 | £254 |
| Build A Flat Roof Extension near Redcar | £42 | £240 |
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 - £17,296

Two storey extension - £87,694

Build a timber frame extension - £25,796

Build a swimming pool - £80,796

Single storey extension - £50,920

Side return extension - £39,205

Install an RSJ - £1,996

Outbuilding - £9,796

Build a Mansard loft conversion - £51,796

Loft conversion - £31,838

Build a kitchen extension - £41,796

Hip to gable loft conversion - £41,796

Granny annexe - £86,796

Garden office - £9,796

Convert a Garage - £15,796

Garage - £18,296

Build a flat roof extension - £21,796

Build a dormer loft conversion - £41,796

Concrete foundations - £6,046

Convert a bungalow loft - £28,796

Convert a basement - £35,205