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Bristol Building Co.Ltd is an established and experienced local extension builder in Portishead. Please contact us for a free, no obligation quote ...
Smart Building Works are here to help customers who need an Extension Builder in Portishead. We offer a competitive rate to complete all your exten...
Symmetry Design And Build is a trusted extension builder serving customers in Portishead and the surrounding area. Contact us to today to get a com...
Trusted and professional extension builder in Portishead. Experienced in all extension buildering work and keeping within budget and on quote. Cull...
B ROBINSON BUILDING is an established and experienced local extension builder in Portishead. Please contact us for a free, no obligation quote and ...
Need an Extension Builder in Portishead? Mucha Construcion has been helping local clients (20 mile radius) with their extension buildering jobs for...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in Portishead. Bristol Brickworks is a friendly and reliable company based in Portishead who c...
A&L Building Services is an established and experienced local extension builder in Portishead. Please contact us for a free, no obligation quote an...
Relax... you have found a reliable extension builder in Portishead. A M I Construction is a friendly and reliable company based in Portishead who c...

A flat roof extension ranges from the cheapest of £21,824 (Mucha Construcion based in BS10) to the dearest of £22,256 (Symmetry Design And Build based in BS3), 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 Portishead by posting a job with HaMuch. We'll send it to extension builders in Portishead.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Portishead | £33 | £247 |
| Build A Flat Roof Extension near Clevedon | £32 | £243 |
| Build A Flat Roof Extension near Clifton | £33 | £255 |
| Build A Flat Roof Extension near North Somerset | £32 | £245 |
| Build A Flat Roof Extension near Bristol | £33 | £255 |
| Build A Flat Roof Extension near Bradley Stoke | £34 | £259 |
| Build A Flat Roof Extension near Kingswood | £34 | £257 |
| Build A Flat Roof Extension near Weston-super-Mare | £33 | £253 |
| Build A Flat Roof Extension near Keynsham | £33 | £251 |
| Build A Flat Roof Extension near South Gloucestershire | £34 | £260 |
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 - £17,572

Two storey extension - £88,108

Build a timber frame extension - £26,072

Build a swimming pool - £81,072

Single storey extension - £56,440

Side return extension - £42,310

Install an RSJ - £2,272

Outbuilding - £10,072

Build a Mansard loft conversion - £52,072

Loft conversion - £34,425

Build a kitchen extension - £42,072

Hip to gable loft conversion - £42,072

Granny annexe - £87,072

Garden office - £10,072

Convert a Garage - £16,072

Garage - £18,572

Build a flat roof extension - £22,072

Build a dormer loft conversion - £42,072

Concrete foundations - £6,322

Convert a bungalow loft - £29,072

Convert a basement - £38,310