From £21,824
Hardbase Construction offer a complete or part package for any of your building, refurbishments or alteration requirements. Keeping an eye on times...
From £22,056
Experienced extension builder ready to quote for your work. 77 Build Ltd is the best extension builder in PO19. No obligation free quotes and many ...
From £21,824
Oak Constructions is a trusted extension builder serving customers in PO19 and the surrounding area. Contact us to today to get a competitive quote...
From £21,792
Need an Extension Builder in PO19? Bespoke Living Construction Ltd has been helping local clients (20 mile radius) with their extension buildering ...
From £21,776
Been in the building trade for over 30years .have in that time worked all over the country on many different projects.
Have city &...
From £21,696
Need to find an Extension Builder near you for all your extension buildering work?
King and Drury provides a local, trusted extension build...
From £21,776
I have been in the construction industry for 32 years. I am a member of the Federation of Master Builders, have the requisite 3rd party insurance i...
From £22,320
Work in the Bosham,Emsworth,Chichester area,build large or small extensions,allworkmen are top tradesmen,very reliable,leave job area clean on comp...
From £22,008
I'm Sarah Reed, Director at Ministry of the Interior. We are a unique company that provides full project management and interior design services ba...
From £21,952
Imperial Construction Chichester is an established and experienced local extension builder in PO19. Please contact us for a free, no obligation quo...

A flat roof extension ranges from the cheapest of £21,696 (King and Drury based in PO19) to the dearest of £22,320 (James Building Services based in PO18), 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 PO19 by posting a job with HaMuch. We'll send it to extension builders in PO19.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Chichester | £34 | £242 |
| Build A Flat Roof Extension near Bognor Regis | £35 | £247 |
| Build A Flat Roof Extension near Arun | £35 | £241 |
| Build A Flat Roof Extension near Havant & Waterloo | £35 | £248 |
| Build A Flat Roof Extension near Havant | £35 | £249 |
| Build A Flat Roof Extension near Littlehampton | £35 | £244 |
| Build A Flat Roof Extension near Horndean | £35 | £253 |
| Build A Flat Roof Extension near Waterlooville | £36 | £250 |
| Build A Flat Roof Extension near Rustington | £36 | £246 |
| Build A Flat Roof Extension near Portsmouth | £36 | £250 |
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 - £17,402

Two storey extension - £87,854

Build a timber frame extension - £25,902

Build a swimming pool - £80,902

Single storey extension - £53,048

Side return extension - £40,402

Install an RSJ - £2,102

Outbuilding - £9,902

Build a Mansard loft conversion - £51,902

Loft conversion - £32,835

Build a kitchen extension - £41,902

Hip to gable loft conversion - £41,902

Granny annexe - £86,902

Garden office - £9,902

Convert a Garage - £15,902

Garage - £18,402

Build a flat roof extension - £21,902

Build a dormer loft conversion - £41,902

Concrete foundations - £6,152

Convert a bungalow loft - £28,902

Convert a basement - £36,402