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Select your affordable Cranbrook extension builder
Trusted and professional extension builder in Cranbrook. Experienced in all extension buildering work and keeping within budget and on quote. GRIFF...
Experienced extension builder ready to quote for your work. S B V CONSTRUCTION LIMITED is the best extension builder in Cranbrook. No obligation fr...
Ian Sayer
cranbrook, TN17
Here at ICS Builders Ltd we are proud to serve as Rolvenden and the surrounding areas most trusted and esteemed local building firm. With ...
Julian Fry
Cranbrook, TN17
Cranwells Construction is a trusted extension builder serving customers in Cranbrook and the surrounding area. Contact us to today to get a competi...
GRAHAM Heasman
All my work is top class and I've taken pride in everything I do I will come and hire me
From £22,664
Joe Rendell
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,952
Grey Feather Ltd is an established extension buildering business in Cranbrook. We come highly recommended and provide competitive quotes for your w...
From £21,920
Need to find an Extension Builder near you for all your extension buildering work?
Broardview Construction provides a local, trusted extens...
From £22,216
Trusted and professional extension builder in Cranbrook. Experienced in all extension buildering work and keeping within budget and on quote. Teamw...

A flat roof extension ranges from the cheapest of £21,920 (Broardview Construction based in TN12) to the dearest of £24,496 (Transform Builders based in TN12), 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 Cranbrook by posting a job with HaMuch. We'll send it to extension builders in Cranbrook.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Maidstone | £40 | £255 |
| Build A Flat Roof Extension near Tunbridge Wells | £37 | £258 |
| Build A Flat Roof Extension near Tonbridge | £38 | £254 |
| Build A Flat Roof Extension near Ashford | £36 | £256 |
| Build A Flat Roof Extension near Larkfield | £41 | £253 |
| Build A Flat Roof Extension near Wealden | £35 | £256 |
| Build A Flat Roof Extension near Crowborough | £36 | £258 |
| Build A Flat Roof Extension near Hastings | £31 | £246 |
| Build A Flat Roof Extension near Bexhill-on-Sea | £31 | £243 |
| Build A Flat Roof Extension near Sittingbourne | £35 | £246 |
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 - £17,905

Two storey extension - £88,608

Build a timber frame extension - £26,405

Build a swimming pool - £81,405

Single storey extension - £63,107

Side return extension - £46,060

Install an RSJ - £2,605

Outbuilding - £10,405

Build a Mansard loft conversion - £52,405

Loft conversion - £37,550

Build a kitchen extension - £42,405

Hip to gable loft conversion - £42,405

Granny annexe - £87,405

Garden office - £10,405

Convert a Garage - £16,405

Garage - £18,905

Build a flat roof extension - £22,405

Build a dormer loft conversion - £42,405

Concrete foundations - £6,655

Convert a bungalow loft - £29,405

Convert a basement - £42,060