From £21,680
Need an Extension Builder in BB6? NOBLETT BUILDING SERVICES has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £21,728
Lonsdale Construction is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get a competitive qu...
From £21,848
Darren Gaynor is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get a competitive quote for ...
From £21,624
WM Brickwork & Pointing are here to help customers who need an Extension Builder in BB6. We offer a competitive rate to complete all your extension...
From £21,624
Garage Conversions by Joe Hanlon is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get a com...
From £21,784
Need to find an Extension Builder near you for all your extension buildering work?
D Parker Design & Build provides a local, trusted extens...
From £21,696
Techbuild Construction North West Ltd is a trusted extension builder serving customers in BB6 and the surrounding area. Contact us to today to get ...
From £21,720
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,712
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,808
Need to find an Extension Builder near you for all your extension buildering work?
J. Grimshaw provides a local, trusted extension builderi...

A flat roof extension ranges from the cheapest of £21,624 (WM Brickwork & Pointing based in BB1) to the dearest of £21,848 (Darren Gaynor based in BB5), 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 BB6 by posting a job with HaMuch. We'll send it to extension builders in BB6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Accrington | £33 | £245 |
| Build A Flat Roof Extension near Blackburn | £34 | £247 |
| Build A Flat Roof Extension near Burnley | £29 | £219 |
| Build A Flat Roof Extension near Darwen | £34 | £253 |
| Build A Flat Roof Extension near Rawtenstall | £31 | £230 |
| Build A Flat Roof Extension near Nelson | £27 | £214 |
| Build A Flat Roof Extension near Bamber Bridge | £30 | £217 |
| Build A Flat Roof Extension near Chorley | £31 | £222 |
| Build A Flat Roof Extension near Preston | £30 | £219 |
| Build A Flat Roof Extension near Fulwood | £31 | £217 |
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 - £17,222

Two storey extension - £87,584

Build a timber frame extension - £25,722

Build a swimming pool - £80,722

Single storey extension - £49,448

Side return extension - £38,377

Install an RSJ - £1,922

Outbuilding - £9,722

Build a Mansard loft conversion - £51,722

Loft conversion - £31,148

Build a kitchen extension - £41,722

Hip to gable loft conversion - £41,722

Granny annexe - £86,722

Garden office - £9,722

Convert a Garage - £15,722

Garage - £18,222

Build a flat roof extension - £21,722

Build a dormer loft conversion - £41,722

Concrete foundations - £5,972

Convert a bungalow loft - £28,722

Convert a basement - £34,377