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The Philog Paving Services is an established extension buildering business in Llanishen. We come highly recommended and provide competitive quotes ...
Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in Llanishen. No obligation free quotes ...
Alan Gaddarn
Very reliable honest and hard working guarantee all work clean and tidy first class work
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Llanishen. No obligation free ...
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in Llanishen. No obligation free quotes and man...
Relax... you have found a reliable extension builder in Llanishen. Charles Marshall Contracting Ltd is a friendly and reliable company based in Lla...
Bill Coslett
35 years in the trade and there is not much we haven't come across or done from pools to extensions and we specialise in loft conversions
MARWAY BUILDING LTD is a trusted extension builder serving customers in Llanishen and the surrounding area. Contact us to today to get a competitiv...
Trusted and professional extension builder in Llanishen. Experienced in all extension buildering work and keeping within budget and on quote. Elite...
Paul Knox
Trusted and professional extension builder in Llanishen. Experienced in all extension buildering work and keeping within budget and on quote. PK CO...

A timber frame extension built in Llanishen typically ranges from £25,040 (PK CONSTRUCTION based in CF14) to £25,808 (Chapman Builders based in CF5), 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 Llanishen by posting a job with HaMuch and we'll send it to extension builders in Llanishen.
"Timber frame extension" - CF3, job posted 02/11/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Cardiff | £34 | £223 |
| Build A Timber Frame Extension near Caerphilly | £33 | £208 |
| Build A Timber Frame Extension near Penarth | £35 | £223 |
| Build A Timber Frame Extension near Risca | £32 | £218 |
| Build A Timber Frame Extension near Church Village | £34 | £214 |
| Build A Timber Frame Extension near Newport | £41 | £233 |
| Build A Timber Frame Extension near Pontypridd | £33 | £211 |
| Build A Timber Frame Extension near Barry | £33 | £218 |
| Build A Timber Frame Extension near Cwmbran | £43 | £219 |
| Build A Timber Frame Extension near Rhondda | £31 | £206 |
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 - £17,017

Two storey extension - £87,275

Build a timber frame extension - £25,517

Build a swimming pool - £80,517

Single storey extension - £45,336

Side return extension - £36,064

Install an RSJ - £1,717

Outbuilding - £9,517

Build a Mansard loft conversion - £51,517

Loft conversion - £29,220

Build a kitchen extension - £41,517

Hip to gable loft conversion - £41,517

Granny annexe - £86,517

Garden office - £9,517

Convert a Garage - £15,517

Garage - £18,017

Build a flat roof extension - £21,517

Build a dormer loft conversion - £41,517

Concrete foundations - £5,767

Convert a bungalow loft - £28,517

Convert a basement - £32,064