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From £26,128
Relax... you have found a reliable extension builder in TN21. CUSTOM BUILD (SUSSEX) LIMITED is a friendly and reliable company based in TN21 who co...
From £26,032
Need an Extension Builder in TN21? I R C BUILDING SERVICES has been helping local clients (20 mile radius) with their extension buildering jobs for...

A timber frame extension built in TN21 typically ranges from £26,032 (I R C BUILDING SERVICES based in TN21) to £26,128 (CUSTOM BUILD (SUSSEX) LIMITED based in TN21), 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 TN21 by posting a job with HaMuch and we'll send it to extension builders in TN21.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Wealden | £35 | £256 |
| Build A Timber Frame Extension near Hailsham | £31 | £243 |
| Build A Timber Frame Extension near Crowborough | £36 | £258 |
| Build A Timber Frame Extension near Tunbridge Wells | £37 | £258 |
| Build A Timber Frame Extension near Bexhill-on-Sea | £31 | £243 |
| Build A Timber Frame Extension near Eastbourne | £32 | £245 |
| Build A Timber Frame Extension near Seaford | £34 | £243 |
| Build A Timber Frame Extension near Hastings | £31 | £246 |
| Build A Timber Frame Extension near Haywards Heath | £35 | £256 |
| Build A Timber Frame Extension near Tonbridge | £38 | £254 |
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 - £17,580

Two storey extension - £88,120

Build a timber frame extension - £26,080

Build a swimming pool - £81,080

Single storey extension - £56,600

Side return extension - £42,400

Install an RSJ - £2,280

Outbuilding - £10,080

Build a Mansard loft conversion - £52,080

Loft conversion - £34,500

Build a kitchen extension - £42,080

Hip to gable loft conversion - £42,080

Granny annexe - £87,080

Garden office - £10,080

Convert a Garage - £16,080

Garage - £18,580

Build a flat roof extension - £22,080

Build a dormer loft conversion - £42,080

Concrete foundations - £6,330

Convert a bungalow loft - £29,080

Convert a basement - £38,400