From £36,150
Experienced extension builder ready to quote for your work. CIA Construction Limited is the best extension builder in SS1. No obligation free quote...
From £41,550
Need an Extension Builder in SS1? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension buildering jo...
From £37,590
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...
From £40,200
M&J Brickwork Ltd are a Chelmsford based Bricklaying & General Building company that operate throughout the Essex and South London...
From £39,480
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in SS1 and the surrounding area. Contact us to today to get a co...
From £31,380
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in SS1. No obligation free quotes and...
From £40,560
P OUGHTON BUILDING is an established and experienced local extension builder in SS1. Please contact us for a free, no obligation quote and competit...
From £39,300
Property Maintenance are here to help customers who need an Extension Builder in SS1. We offer a competitive rate to complete all your extension bu...
From £26,880
35 years in the trade can Lay bricks plaster roofing wall and floor tiling
From £34,350
Need to find an Extension Builder near you for all your extension buildering work?
JLS Building Services provides a local, trusted extensio...

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 SS1 by posting a job with HaMuch and we will send it to extension builders in SS1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Southend-on-Sea | £37 | £247 |
| Convert A Basement near Canvey Island | £39 | £256 |
| Convert A Basement near Thundersley | £38 | £251 |
| Convert A Basement near Rayleigh | £39 | £252 |
| Convert A Basement near Wickford | £39 | £255 |
| Convert A Basement near Basildon | £39 | £251 |
| Convert A Basement near Stanford-le-Hope | £40 | £254 |
| Convert A Basement near Gillingham | £39 | £253 |
| Convert A Basement near Sittingbourne | £35 | £246 |
| Convert A Basement near Billericay | £38 | £248 |
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 - £17,433

Two storey extension - £87,899

Build a timber frame extension - £25,933

Build a swimming pool - £80,933

Single storey extension - £53,656

Side return extension - £40,744

Install an RSJ - £2,133

Outbuilding - £9,933

Build a Mansard loft conversion - £51,933

Loft conversion - £33,120

Build a kitchen extension - £41,933

Hip to gable loft conversion - £41,933

Granny annexe - £86,933

Garden office - £9,933

Convert a Garage - £15,933

Garage - £18,433

Build a flat roof extension - £21,933

Build a dormer loft conversion - £41,933

Concrete foundations - £6,183

Convert a bungalow loft - £28,933

Convert a basement - £36,744