From £36,780
Plumbing, painting exterior, interior, extensions, plastering, skiming, carpeting, Flooring, you can ask us ..
From £55,320
Propello is an established and experienced local extension builder in SG3. Please contact us for a free, no obligation quote and competitive rates...
From £31,380
we are very efficient in our work.and make sure our client is one 100% satisfied with our work.
From £42,630
A.J Builders is an established and experienced local extension builder in SG3. Please contact us for a free, no obligation quote and competitive ra...
From £40,560
Top Notch Tradesmen is an established and experienced local extension builder in SG3. Please contact us for a free, no obligation quote and competi...
From £37,680
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £41,370
Need to find an Extension Builder near you for all your extension buildering work?
Greg-Bud provides a local, trusted extension buildering ...
From £42,360
Platinum Electrics is a Branch off Platinum Premier Projects who deal in all types of construction projects. Platinum Electrics are based in London...
From £38,760
JJSR Construction Ltd is an established and experienced local extension builder in SG3. Please contact us for a free, no obligation quote and compe...
From £36,600
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in SG3 by posting a job with HaMuch and we will send it to extension builders in SG3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Stevenage | £44 | £282 |
| Convert A Basement near Welwyn Garden City | £42 | £268 |
| Convert A Basement near Hertford | £46 | £289 |
| Convert A Basement near Hitchin | £43 | £283 |
| Convert A Basement near East Hertfordshire | £44 | £289 |
| Convert A Basement near North Hertfordshire | £44 | £283 |
| Convert A Basement near Hatfield | £64 | £283 |
| Convert A Basement near Ware | £47 | £296 |
| Convert A Basement near Harpenden | £86 | £315 |
| Convert A Basement near Letchworth | £44 | £283 |
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 - £17,753

Two storey extension - £88,379

Build a timber frame extension - £26,253

Build a swimming pool - £81,253

Single storey extension - £60,056

Side return extension - £44,344

Install an RSJ - £2,453

Outbuilding - £10,253

Build a Mansard loft conversion - £52,253

Loft conversion - £36,120

Build a kitchen extension - £42,253

Hip to gable loft conversion - £42,253

Granny annexe - £87,253

Garden office - £10,253

Convert a Garage - £16,253

Garage - £18,753

Build a flat roof extension - £22,253

Build a dormer loft conversion - £42,253

Concrete foundations - £6,503

Convert a bungalow loft - £29,253

Convert a basement - £40,344