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Ferguson Building Services Limited is an established and experienced local extension builder in Henfield. Please contact us for a free, no obligati...
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 Henfield? East West Refurbishment Limited has been helping local clients (20 mile radius) with their extension builder...
From £33,675
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 ...
Trusted and professional extension builder in Henfield. Experienced in all extension buildering work and keeping within budget and on quote. Good C...
ACF Carpentry Ltd is an established and experienced local extension builder in Henfield. Please contact us for a free, no obligation quote and comp...
Reuben Sargent
Rjscarpentryconstruction is a well established company with over 30 years of experience in the carpentry and construction industries
JBF Building & Roofing Maintenance Ltd is an established and experienced local extension builder in Henfield. Please contact us for a free, no obli...
Relax... you have found a reliable extension builder in Henfield. Aurabuild is a friendly and reliable company based in Henfield who consider no jo...

Comparing extension builders estimates for Loft conversion 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 of a loft conversion in Henfield by posting your job to extension builders in Henfield.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Loft Conversion near Burgess Hill | £36 | £256 |
| Loft Conversion near Shoreham-by-Sea | £36 | £250 |
| Loft Conversion near Lancing | £36 | £249 |
| Loft Conversion near Brighton and Hove | £35 | £252 |
| Loft Conversion near Haywards Heath | £35 | £256 |
| Loft Conversion near Worthing | £35 | £249 |
| Loft Conversion near Brighton | £35 | £253 |
| Loft Conversion near Horsham | £38 | £265 |
| Loft Conversion near Mid Sussex | £35 | £261 |
| Loft Conversion near Rustington | £35 | £242 |
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 - £17,650

Two storey extension - £88,226

Build a timber frame extension - £26,150

Build a swimming pool - £81,150

Single storey extension - £58,008

Side return extension - £43,192

Install an RSJ - £2,350

Outbuilding - £10,150

Build a Mansard loft conversion - £52,150

Loft conversion - £35,160

Build a kitchen extension - £42,150

Hip to gable loft conversion - £42,150

Granny annexe - £87,150

Garden office - £10,150

Convert a Garage - £16,150

Garage - £18,650

Build a flat roof extension - £22,150

Build a dormer loft conversion - £42,150

Concrete foundations - £6,400

Convert a bungalow loft - £29,150

Convert a basement - £39,192