Local SG2 extension builders
GB Build
£41/hour
£262/day
Relax... you have found a reliable extension builder in SG2. GB Build is a friendly and reliable company based in SG2 who consider no job as too bi...
"Kitchen extension" - HITCHIN
Red Swan Construction
£42/hour
£274/day
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...
"Outbuilding" - SG2
Wyatt Installations
£45/hour
£295/day
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...
"Can i get a builder for an extension quotation please - require 1first floor building on top of my garage and a revamped, heat-proof conservatory if you deal with this - reasonably priced please, thank you." - MICHAEL, SG2
UCS Painting & Decorating Services
£45/hour
£304/day
With extensive extension buildering experience, we provide reliable, high-quality workmanship at competitive prices. UCS Painting & Decorating Serv...
"Kitchen extension" - SG1
Stevenage Roofing Services
£42/hour
£279/day
We are a local roofing company offering a complete roofing service.We provide one of the most cost effective, reliable roofing services in and ...
"Single storey extension" - STEVENAGE
Precision Roofing & Building Maintenance
£76/hour
£270/day
Experienced extension builder ready to quote for your work. Precision Roofing & Building Maintenance is the best extension builder in SG2. No oblig...
"I would to build an extension on top of my garage, planning stage at the moment but I would like to have an experienced builders intake, realistic cost analysis with a plan to use the builder throughout too. Thanks." - MICHAEL, SG2
Harris Building Solutions Limited
£43/hour
£284/day
Harris Building Solutions Limited is an established extension buildering business in SG2. We come highly recommended and provide competitive quotes...
"Front of house extension. End of terrace property." - VAS, SG2
WALKERN CONSTRUCTION LIMITED
£46/hour
£313/day
WALKERN CONSTRUCTION LIMITED is an established and experienced local extension builder in SG2. Please contact us for a free, no obligation quote an...
Conserv-a-tech
£47/hour
£302/day
Owned & managed by Eric Knappett, with the Sales Design managed by Allan Wilding, both Eric & Allan have over 60years of combined experience and a ...
Conserv-a-tech
£42/hour
£271/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
G B BUILDSTORE LTD
£38/hour
£252/day
Experienced extension builder ready to quote for your work. G B BUILDSTORE LTD is the best extension builder in SG2. No obligation free quotes and ...
Ross Taylor Homes
£38/hour
£243/day
Ross Taylor Homes is an established extension buildering business in SG2. We come highly recommended and provide competitive quotes for your work.<...
Interior Installations
£38/hour
£245/day
Relax... you have found a reliable extension builder in SG2. Interior Installations is a friendly and reliable company based in SG2 who consider no...
MA Gower
£30/hour
£240/day
Need an Extension Builder in SG2? MA Gower has been helping local clients (20 mile radius) with their extension buildering jobs for many years. Get...
The most important thing is do avoid handing over cash or paying large sums in advance. Be wary of paying cash for a cheaper job, i.e. to avoid VAT, you may be going down a slippery slope of not doing things properly which may eventually mean your job is also not done properly.
Agree when you intend to pay, ideally after you are satisfied with the completed job. If it is a big job agree a schedule of staged payments which is fair to both parties.
To avoid bad tradespeople and to ensure you can find them should they not answer a mobile;
- Get proper contact details and check them yourself
- Check if the company is verified on the Companies House website
- Get phone details, ideally a land line or 0800 number and check it
- Get a physical office address
Get quotes in writing by email or in person if possible. Getting quotes online or by text is ok (make sure you accept the offer by replying). For large projects make a written agreement, schedule of works and snagging plans as part of a working document. Also;
- Agree expected quality of workmanship and materials in advance
- When will work start and when will project be finished, what happens if project over runs ?
- How long is the guarantee on work and materials eg 12 months
- Discuss onsite behaviour in advance (no smoking, swearing or using mobile phones for non-work purposes)
- Agree that your Extension Builder will remove all debris and rubbish and what level of tidying up you want after job
Compare SG2 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Stevenage | £44 | £282 |
| Extension Builders near Hitchin | £43 | £283 |
| Extension Builders near North Hertfordshire | £44 | £283 |
| Extension Builders near East Hertfordshire | £44 | £289 |
| Extension Builders near Letchworth | £44 | £283 |
| Extension Builders near Welwyn Garden City | £42 | £268 |
| Extension Builders near Hertford | £46 | £289 |
| Extension Builders near Ware | £47 | £296 |
| Extension Builders near Harpenden | £86 | £315 |
| Extension Builders near Hatfield | £64 | £283 |
Job estimates from extension builders near you
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.

Build a timber frame extension - £26,192

Garden office - £10,192

Granny annexe - £87,192

Build a flat roof extension - £22,192

Convert a Garage - £16,192

Hip to gable loft conversion - £42,192

Convert a bungalow loft - £29,192

Build a dormer loft conversion - £42,192

Build a swimming pool - £81,192

Build a Mansard loft conversion - £52,192

Concrete foundations - £6,442

Underpin a building - £17,692

Two storey extension - £88,288

Convert a basement - £39,660

Side return extension - £43,660

Loft conversion - £35,550

Garage - £18,692

Single storey extension - £58,840

Outbuilding - £10,192

Install an RSJ - £2,392

Build a kitchen extension - £42,192
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