From £21,952
A service with a difference. Priced competitively to build a flat roof extension and more.
From £21,800
A friendly extension builder in TN30. Happy to provide references and a free quote to build a flat roof extension.
From £22,168
Here at ICS Builders Ltd we are proud to serve as Rolvenden and the surrounding areas most trusted and esteemed local building firm. With ...
From £21,952
For all your needs. If you need to build a flat roof extension contact us today to get a no obligation free quote.
From £22,168
Need to build a flat roof extension? trade_vw is competitively priced and quick to quote.
From £21,936
If you need to build a flat roof extension use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £21,744
Need to build a flat roof extension? trade_vw is competitively priced and quick to quote.
From £21,784
A friendly extension builder in TN30. Happy to provide references and a free quote to build a flat roof extension.
From £22,240
To build a flat roof extension in TN30 we are a reliable and competitive extension builder. Expert service guaranteed.
From £22,096
You want to build a flat roof extension? No problem, an Extension Builder is a reliable extension builder with years of experience helping homeowne...
From £22,096
A service with a difference. Priced competitively to build a flat roof extension and more.
From £21,960
Need to build a flat roof extension? trade_vw is competitively priced and quick to quote.
From £21,920
A service with a difference. Priced competitively to build a flat roof extension and more.
From £24,496
All my work is top class and I've taken pride in everything I do I will come and hire me
From £22,160
an Extension Builder is an established company, providing a professional and tidy service.
From £22,176
You want to build a flat roof extension? No problem, an Extension Builder is a reliable extension builder with years of experience helping homeowne...
From £22,088
To build a flat roof extension in TN30 we are a reliable and competitive extension builder. Expert service guaranteed.
From £21,800
A friendly extension builder in TN30. Happy to provide references and a free quote to build a flat roof extension.
From £22,184
To build a flat roof extension in TN30 we are a reliable and competitive extension builder. Expert service guaranteed.
From £21,984
County Construction are a reliable and reputable company that work across the County. We are a family-run business with a good reputation and have ...
From £21,936
For all your needs. If you need to build a flat roof extension contact us today to get a no obligation free quote.
From £22,264
Battle Building building services company has been helping customers in Sussex and the surrounding area by providing professional, trustworthy buil...

A flat roof extension ranges from the cheapest of £21,744 (MR P CATT T/A DPC CONSTRUCTION based in TN29) 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 TN30 by posting a job with HaMuch. We'll send it to extension builders in TN30.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Ashford | £30 | £213 |
| Build A Flat Roof Extension near Hastings | £27 | £209 |
| Build A Flat Roof Extension near Maidstone | £36 | £226 |
| Build A Flat Roof Extension near Hythe | £27 | £196 |
| Build A Flat Roof Extension near Bexhill-on-Sea | £27 | £209 |
| Build A Flat Roof Extension near Faversham | £31 | £211 |
| Build A Flat Roof Extension near Swale | £31 | £214 |
| Build A Flat Roof Extension near Tunbridge Wells | £33 | £228 |
| Build A Flat Roof Extension near Sittingbourne | £31 | £217 |
| Build A Flat Roof Extension near Larkfield | £36 | £224 |
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 - £17,652

Two storey extension - £88,228

Build a timber frame extension - £26,152

Build a swimming pool - £81,152

Single storey extension - £58,040

Side return extension - £43,210

Install an RSJ - £2,352

Outbuilding - £10,152

Build a Mansard loft conversion - £52,152

Loft conversion - £35,175

Build a kitchen extension - £42,152

Hip to gable loft conversion - £42,152

Granny annexe - £87,152

Garden office - £10,152

Convert a Garage - £16,152

Garage - £18,652

Build a flat roof extension - £22,152

Build a dormer loft conversion - £42,152

Concrete foundations - £6,402

Convert a bungalow loft - £29,152

Convert a basement - £39,210