Trusted and professional extension builder in East Sussex. Experienced in all extension buildering work and keeping within budget and on quote. Goo...
Experienced extension builder ready to quote for your work. Brighton Marina Hand Car Wash is the best extension builder in East Sussex. No obligati...
Relax... you have found a reliable extension builder in East Sussex. R & G Construction Brighton Ltd is a friendly and reliable company based in Ea...
Graeme Davies
Experienced extension builder ready to quote for your work. Graeme Davies Plumbing and Heating is the best extension builder in East Sussex. No obl...
Experienced extension builder ready to quote for your work. CITY BUILDING SERVICES LIMITED is the best extension builder in East Sussex. No obligat...
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Tony Paice
Master builder since 1960 new build and refurb all trades many photo albums to show
Trusted and professional extension builder in East Sussex. Experienced in all extension buildering work and keeping within budget and on quote. RA ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Comparing extension builders estimates for a Convert a basement 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 to convert a basement in East Sussex by posting a job with HaMuch and we will send it to extension builders in East Sussex.
"Https://www.rightmove.co.uk/properties/1583 6xxx #/?channel=RES_BUY Can you give us a quote for excavation and conversion of this basement based on what you can see in this rightmove advert?" - BRIGHTON, job posted 08/04/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Brighton and Hove | £35 | £251 |
| Convert A Basement near Brighton | £35 | £251 |
| Convert A Basement near Shoreham-by-Sea | £36 | £250 |
| Convert A Basement near Burgess Hill | £36 | £240 |
| Convert A Basement near Lancing | £37 | £251 |
| Convert A Basement near Worthing | £35 | £251 |
| Convert A Basement near Haywards Heath | £35 | £256 |
| Convert A Basement near Seaford | £34 | £243 |
| Convert A Basement near Mid Sussex | £35 | £261 |
| Convert A Basement near Rustington | £36 | £246 |
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 - £17,584

Two storey extension - £88,126

Build a timber frame extension - £26,084

Build a swimming pool - £81,084

Single storey extension - £56,680

Side return extension - £42,445

Install an RSJ - £2,284

Outbuilding - £10,084

Build a Mansard loft conversion - £52,084

Loft conversion - £34,538

Build a kitchen extension - £42,084

Hip to gable loft conversion - £42,084

Granny annexe - £87,084

Garden office - £10,084

Convert a Garage - £16,084

Garage - £18,584

Build a flat roof extension - £22,084

Build a dormer loft conversion - £42,084

Concrete foundations - £6,334

Convert a bungalow loft - £29,084

Convert a basement - £38,445