From £21,312
Salisbury, SP2
NHBC takes great pride in what it does with a very high attention to detail
From £22,152
Need an Extension Builder in Salisbury? Moores Build has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
From £22,136
Salisbury, SP2
Arkson builders ltd is an established and experienced local extension builder in Salisbury. Please contact us for a free, no obligation quote and c...
From £22,312
Shape Project Management is an established and experienced local extension builder in Salisbury. Please contact us for a free, no obligation quote ...
From £22,040
Need an Extension Builder in Salisbury? BARTITIONS DESIGN & BUILD LTD has been helping local clients (20 mile radius) with their extension builder...
From £22,104
JJ Acquisitions ltd is a trusted extension builder serving customers in Salisbury and the surrounding area. Contact us to today to get a competitiv...
From £21,872
Need to find an Extension Builder near you for all your extension buildering work?
R F S BUILDERS provides a local, trusted extension build...
From £22,208
STEWART BUILDERS is an established and experienced local extension builder in Salisbury. Please contact us for a free, no obligation quote and comp...
From £20,848
We specialise in Epoxy Resin and Polyurethane floor coatings and screeds (very durable and seamless flooring), designed for retail, factories, manu...
From £22,080
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A flat roof extension ranges from the cheapest of £20,848 (Floortrak Limited based in SO51) to the dearest of £22,312 (Shape Project Management based in SP5), 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 Salisbury by posting a job with HaMuch. We'll send it to extension builders in Salisbury.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Salisbury | £35 | £247 |
| Build A Flat Roof Extension near Test Valley | £37 | £261 |
| Build A Flat Roof Extension near Romsey | £32 | £230 |
| Build A Flat Roof Extension near New Forest | £32 | £245 |
| Build A Flat Roof Extension near Totton | £34 | £243 |
| Build A Flat Roof Extension near Andover | £40 | £248 |
| Build A Flat Roof Extension near Chandler's Ford | £34 | £245 |
| Build A Flat Roof Extension near Eastleigh | £34 | £244 |
| Build A Flat Roof Extension near Southampton | £34 | £243 |
| Build A Flat Roof Extension near Devizes | £32 | £242 |
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 - £17,406

Two storey extension - £87,860

Build a timber frame extension - £25,906

Build a swimming pool - £80,906

Single storey extension - £53,128

Side return extension - £40,447

Install an RSJ - £2,106

Outbuilding - £9,906

Build a Mansard loft conversion - £51,906

Loft conversion - £32,873

Build a kitchen extension - £41,906

Hip to gable loft conversion - £41,906

Granny annexe - £86,906

Garden office - £9,906

Convert a Garage - £15,906

Garage - £18,406

Build a flat roof extension - £21,906

Build a dormer loft conversion - £41,906

Concrete foundations - £6,156

Convert a bungalow loft - £28,906

Convert a basement - £36,447