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Ricky Alexander
Trusted and professional extension builder in Portslade. Experienced in all extension buildering work and keeping within budget and on quote. RA Co...
Ferguson Building Services Limited is an established and experienced local extension builder in Portslade. Please contact us for a free, no obligat...
Graeme Davies
Experienced extension builder ready to quote for your work. Graeme Davies Plumbing and Heating is the best extension builder in Portslade. No oblig...
Need to find an Extension Builder near you for all your extension buildering work?
FIRST FORMAT BUILDING provides a local, trusted extensio...
Need an Extension Builder in Portslade? East West Refurbishment Limited has been helping local clients (20 mile radius) with their extension builde...
Citadel Construction is an established extension buildering business in Portslade. We come highly recommended and provide competitive quotes for yo...
The studio is based on our founder's vision in concept and interior design, Fabio Lauro has long been in the business of creating atmospheres. His ...
From £25,992
Member since August 2026
H P Building Services Sussex is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles arou...
Proper Copper DesignWe are a design lead copper homeware company specializing in contemporary handles, taps, showers and accessories. Our products ...
Experienced extension builder ready to quote for your work. Brighton Marina Hand Car Wash is the best extension builder in Portslade. No obligation...

A timber frame extension built in Portslade typically ranges from £25,768 (Graeme Davies Plumbing and Heating based in BN3) to £26,800 (RA Construction based in BN2), 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 Portslade by posting a job with HaMuch and we'll send it to extension builders in Portslade.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Shoreham-by-Sea | £36 | £250 |
| Build A Timber Frame Extension near Brighton | £35 | £253 |
| Build A Timber Frame Extension near Brighton and Hove | £35 | £252 |
| Build A Timber Frame Extension near Lancing | £36 | £249 |
| Build A Timber Frame Extension near Worthing | £35 | £249 |
| Build A Timber Frame Extension near Burgess Hill | £36 | £256 |
| Build A Timber Frame Extension near Haywards Heath | £35 | £256 |
| Build A Timber Frame Extension near Rustington | £35 | £242 |
| Build A Timber Frame Extension near Mid Sussex | £35 | £261 |
| Build A Timber Frame Extension near Littlehampton | £35 | £241 |
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 - £17,573

Two storey extension - £88,109

Build a timber frame extension - £26,073

Build a swimming pool - £81,073

Single storey extension - £56,456

Side return extension - £42,319

Install an RSJ - £2,273

Outbuilding - £10,073

Build a Mansard loft conversion - £52,073

Loft conversion - £34,433

Build a kitchen extension - £42,073

Hip to gable loft conversion - £42,073

Granny annexe - £87,073

Garden office - £10,073

Convert a Garage - £16,073

Garage - £18,573

Build a flat roof extension - £22,073

Build a dormer loft conversion - £42,073

Concrete foundations - £6,323

Convert a bungalow loft - £29,073

Convert a basement - £38,319