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Trusted and professional extension builder in SG4. Experienced in all extension buildering work and keeping within budget and on quote. Amcell Reno...
Experienced extension builder ready to quote for your work. HB Construction is the best extension builder in SG4. No obligation free quotes and man...
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
Gary Braine
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 £88,408
Harris Building Solutions Limited is an established extension buildering business in SG4. We come highly recommended and provide competitive quotes...
From £88,348
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 £88,612
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 £87,556
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 £88,480
Totalworth Building Services is an established extension buildering business in SG4. We come highly recommended and provide competitive quotes for ...
From £88,240
Andy N
Experienced extension builder ready to quote for your work. Precision Roofing & Building Maintenance is the best extension builder in SG4. No oblig...

Costs range from £87,556 (L P L Property Services Limited based in SG5) to £88,612 (M P BUILDING LIMITED based in SG4), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to SG4.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Hitchin | £43 | £283 |
| Two Storey Extension near Stevenage | £44 | £282 |
| Two Storey Extension near North Hertfordshire | £44 | £283 |
| Two Storey Extension near Letchworth | £44 | £283 |
| Two Storey Extension near Luton | £42 | £279 |
| Two Storey Extension near Harpenden | £45 | £282 |
| Two Storey Extension near Welwyn Garden City | £42 | £269 |
| Two Storey Extension near East Hertfordshire | £44 | £289 |
| Two Storey Extension near Mid Bedfordshire | £42 | £276 |
| Two Storey Extension near Hertford | £46 | £290 |
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 - £17,683

Two storey extension - £88,275

Build a timber frame extension - £26,183

Build a swimming pool - £81,183

Single storey extension - £58,664

Side return extension - £43,561

Install an RSJ - £2,383

Outbuilding - £10,183

Build a Mansard loft conversion - £52,183

Loft conversion - £35,468

Build a kitchen extension - £42,183

Hip to gable loft conversion - £42,183

Granny annexe - £87,183

Garden office - £10,183

Convert a Garage - £16,183

Garage - £18,683

Build a flat roof extension - £22,183

Build a dormer loft conversion - £42,183

Concrete foundations - £6,433

Convert a bungalow loft - £29,183

Convert a basement - £39,561