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Experienced extension builder ready to quote for your work. C C OLEARY CONSTRUCTION is the best extension builder in Worthing. No obligation free q...
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 Worthing. Experienced in all extension buildering work and keeping within budget and on quote. Stretc...
M Wesley General Builder & Property Maintenance is a trusted extension builder serving customers in Worthing and the surrounding area. Contact us t...
Need to find an Extension Builder near you for all your extension buildering work?
FIRST FORMAT BUILDING provides a local, trusted extensio...
From £41,410
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...
Relax... you have found a reliable extension builder in Worthing. Haynes & Scott Developments is a friendly and reliable company based in Worthing ...
Trusted and professional extension builder in Worthing. Experienced in all extension buildering work and keeping within budget and on quote. S J Pe...
Relax... you have found a reliable extension builder in Worthing. ONE BUILD is a friendly and reliable company based in Worthing who consider no jo...
ACF Carpentry Ltd is an established and experienced local extension builder in Worthing. Please contact us for a free, no obligation quote and comp...

Comparing extension builders estimates for Side return extension 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 a side return extention by posting your job to extension builders in Worthing.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Side Return Extension near Worthing | £35 | £249 |
| Side Return Extension near Lancing | £36 | £249 |
| Side Return Extension near Shoreham-by-Sea | £36 | £250 |
| Side Return Extension near Rustington | £35 | £242 |
| Side Return Extension near Littlehampton | £35 | £241 |
| Side Return Extension near Arun | £35 | £241 |
| Side Return Extension near Brighton | £35 | £253 |
| Side Return Extension near Brighton and Hove | £35 | £252 |
| Side Return Extension near Bognor Regis | £35 | £247 |
| Side Return Extension near Burgess Hill | £36 | £256 |
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 - £17,452

Two storey extension - £87,928

Build a timber frame extension - £25,952

Build a swimming pool - £80,952

Single storey extension - £54,040

Side return extension - £40,960

Install an RSJ - £2,152

Outbuilding - £9,952

Build a Mansard loft conversion - £51,952

Loft conversion - £33,300

Build a kitchen extension - £41,952

Hip to gable loft conversion - £41,952

Granny annexe - £86,952

Garden office - £9,952

Convert a Garage - £15,952

Garage - £18,452

Build a flat roof extension - £21,952

Build a dormer loft conversion - £41,952

Concrete foundations - £6,202

Convert a bungalow loft - £28,952

Convert a basement - £36,960