From £62,840
Our building services company Country Home Concepts has been helping customers in Hertfordshire and the surrounding area by providing professional,...
From £61,400
Totalworth Building Services is an established extension buildering business in SG4. We come highly recommended and provide competitive quotes for ...
From £55,320
Experienced extension builder ready to quote for your work. G B BUILDSTORE LTD is the best extension builder in SG4. No obligation free quotes and ...
From £60,440
Harris Building Solutions Limited is an established extension buildering business in SG4. We come highly recommended and provide competitive quotes...
From £59,640
We are a local roofing company offering a complete roofing service.We provide one of the most cost effective, reliable roofing services in and ...
From £65,240
Building and Technology Systems LTD is a company with honest core values of providing really fast, outstanding quality and value at competitive pri...
From £63,160
M P BUILDING LIMITED is an established and experienced local extension builder in SG4. Please contact us for a free, no obligation quote and compet...
From £49,080
Need an Extension Builder in SG4? L P L Property Services Limited has been helping local clients (20 mile radius) with their extension buildering j...
From £62,200
We are a family run business with over 30 years of combined experience, we offer everything from replacing doors and worktops on your kitchen to sm...
From £58,360
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

"Single storey extension" - STEVENAGE, job posted 11/08/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Single Storey Extension near Hitchin | £43 | £283 |
| Single Storey Extension near Stevenage | £44 | £282 |
| Single Storey Extension near North Hertfordshire | £44 | £283 |
| Single Storey Extension near Letchworth | £44 | £283 |
| Single Storey Extension near Luton | £41 | £278 |
| Single Storey Extension near Harpenden | £86 | £315 |
| Single Storey Extension near Welwyn Garden City | £42 | £268 |
| Single Storey Extension near East Hertfordshire | £44 | £289 |
| Single Storey Extension near Mid Bedfordshire | £42 | £276 |
| Single Storey Extension near Hertford | £46 | £289 |
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 - £17,738

Two storey extension - £88,358

Build a timber frame extension - £26,238

Build a swimming pool - £81,238

Single storey extension - £59,768

Side return extension - £44,182

Install an RSJ - £2,438

Outbuilding - £10,238

Build a Mansard loft conversion - £52,238

Loft conversion - £35,985

Build a kitchen extension - £42,238

Hip to gable loft conversion - £42,238

Granny annexe - £87,238

Garden office - £10,238

Convert a Garage - £16,238

Garage - £18,738

Build a flat roof extension - £22,238

Build a dormer loft conversion - £42,238

Concrete foundations - £6,488

Convert a bungalow loft - £29,238

Convert a basement - £40,182