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Relax... you have found a reliable extension builder in Knebworth. Up and Out Builds Ltd is a friendly and reliable company based in Knebworth who ...
Amarjeet Gill
Architecture and Construction all in one place.
FREE DRAWINGS for all projects we build.
Buyerz Trading is an established and experienced local extension builder in Knebworth. Please contact us for a free, no obligation quote and compet...
Are you looking for resin driveways in North London? We are a leading builder of driveways and patios in North London. We have expertise in various...
A1 Home Care Building Maintenance are here to help customers who need an Extension Builder in Knebworth. We offer a competitive rate to complete al...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Trusted and professional extension builder in Knebworth. Experienced in all extension buildering work and keeping within budget and on quote. Amcel...
Need an Extension Builder in Knebworth? MA Gower has been helping local clients (20 mile radius) with their extension buildering jobs for many year...
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 Knebworth. No obligation free quote...

A timber frame extension built in Knebworth typically ranges from £25,920 (MA Gower based in AL6) to £26,536 (R. Newman Construction based in AL4), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build a timber frame extension in Knebworth by posting a job with HaMuch and we'll send it to extension builders in Knebworth.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Stevenage | £44 | £282 |
| Build A Timber Frame Extension near Welwyn Garden City | £42 | £269 |
| Build A Timber Frame Extension near Hertford | £46 | £290 |
| Build A Timber Frame Extension near Hitchin | £43 | £283 |
| Build A Timber Frame Extension near East Hertfordshire | £44 | £289 |
| Build A Timber Frame Extension near North Hertfordshire | £44 | £283 |
| Build A Timber Frame Extension near Hatfield | £42 | £266 |
| Build A Timber Frame Extension near Ware | £47 | £296 |
| Build A Timber Frame Extension near Harpenden | £45 | £282 |
| Build A Timber Frame Extension 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 - £17,655

Two storey extension - £88,233

Build a timber frame extension - £26,155

Build a swimming pool - £81,155

Single storey extension - £58,104

Side return extension - £43,246

Install an RSJ - £2,355

Outbuilding - £10,155

Build a Mansard loft conversion - £52,155

Loft conversion - £35,205

Build a kitchen extension - £42,155

Hip to gable loft conversion - £42,155

Granny annexe - £87,155

Garden office - £10,155

Convert a Garage - £16,155

Garage - £18,655

Build a flat roof extension - £22,155

Build a dormer loft conversion - £42,155

Concrete foundations - £6,405

Convert a bungalow loft - £29,155

Convert a basement - £39,246