From £10,240
M&J Brickwork Ltd are a Chelmsford based Bricklaying & General Building company that operate throughout the Essex and South London...
From £10,176
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in CM9 and the surrounding area. Contact us to today to get a co...
From £9,456
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in CM9. No obligation free quotes and...
From £10,272
P OUGHTON BUILDING is an established and experienced local extension builder in CM9. Please contact us for a free, no obligation quote and competit...
From £10,160
Property Maintenance are here to help customers who need an Extension Builder in CM9. We offer a competitive rate to complete all your extension bu...
From £10,360
Need an Extension Builder in CM9? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension buildering jo...
From £9,680
Trusted and professional extension builder in CM9. Experienced in all extension buildering work and keeping within budget and on quote. CHAPEL BUIL...
From £10,008
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...
From £9,720
Need to find an Extension Builder near you for all your extension buildering work?
JLS Building Services provides a local, trusted extensio...
From £9,896
Relax... you have found a reliable extension builder in CM9. Mikra Services is a friendly and reliable company based in CM9 who consider no job as ...

Outbuilding costs in CM9 range from the cheapest of £9,456 (Capital Roofing Ltd based in SS13) to the dearest of £10,360 (Ellis & James Builders Limited based in SS17), but these are just estimates.
Comparing extension builders estimates for building an outbuilding 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 an outbuilding in CM9 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Maldon | £36 | £244 |
| Outbuilding near Witham | £36 | £240 |
| Outbuilding near Chelmsford | £38 | £258 |
| Outbuilding near Wickford | £39 | £255 |
| Outbuilding near Rayleigh | £39 | £252 |
| Outbuilding near Braintree | £37 | £247 |
| Outbuilding near Thundersley | £38 | £251 |
| Outbuilding near Colchester | £34 | £232 |
| Outbuilding near Southend-on-Sea | £37 | £247 |
| Outbuilding 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 - £17,497

Two storey extension - £87,995

Build a timber frame extension - £25,997

Build a swimming pool - £80,997

Single storey extension - £54,936

Side return extension - £41,464

Install an RSJ - £2,197

Outbuilding - £9,997

Build a Mansard loft conversion - £51,997

Loft conversion - £33,720

Build a kitchen extension - £41,997

Hip to gable loft conversion - £41,997

Granny annexe - £86,997

Garden office - £9,997

Convert a Garage - £15,997

Garage - £18,497

Build a flat roof extension - £21,997

Build a dormer loft conversion - £41,997

Concrete foundations - £6,247

Convert a bungalow loft - £28,997

Convert a basement - £37,464