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Relax... you have found a reliable extension builder in CM1. CWN Developments Ltd is a friendly and reliable company based in CM1 who consider no j...
Ian Young
Mr. is a trusted extension builder serving customers in CM1 and the surrounding area. Contact us to today to get a competitive quote for extension ...
Need to find an Extension Builder near you for all your extension buildering work?
Newman Multi Trade Services provides a local, trusted ex...
Martin Womersley Building Services is an established extension buildering business in CM1. We come highly recommended and provide competitive quote...
Prestige Roofing Contractors Ltd are here to help customers who need an Extension Builder in CM1. We offer a competitive rate to complete all your ...
Storm Roofing Essex are here to help customers who need an Extension Builder in CM1. We offer a competitive rate to complete all your extension bui...
Mark Scrutton
Mark scrutton is a trusted extension builder serving customers in CM1 and the surrounding area. Contact us to today to get a competitive quote for...
From £38,940
Experienced extension builder ready to quote for your work. COLWIN CONSTRUCTION LTD is the best extension builder in CM1. No obligation free quotes...
From £38,760
Need to find an Extension Builder near you for all your extension buildering work?
S Walker Construction provides a local, trusted extensio...
From £37,590
Murrill Carpentry & Building Ltd are a well established, reliable, trustworthy, family run company with over twelve years experience.We are...

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 CM1 by posting a job with HaMuch and we will send it to extension builders in CM1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Chelmsford | £38 | £258 |
| Convert A Basement near Billericay | £38 | £248 |
| Convert A Basement near Witham | £36 | £240 |
| Convert A Basement near Wickford | £39 | £255 |
| Convert A Basement near Braintree | £37 | £247 |
| Convert A Basement near Brentwood | £39 | £255 |
| Convert A Basement near Maldon | £36 | £244 |
| Convert A Basement near Basildon | £39 | £251 |
| Convert A Basement near Rayleigh | £39 | £252 |
| Convert A Basement near Bishop's Stortford | £42 | £264 |
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 - £17,515

Two storey extension - £88,023

Build a timber frame extension - £26,015

Build a swimming pool - £81,015

Single storey extension - £55,304

Side return extension - £41,671

Install an RSJ - £2,215

Outbuilding - £10,015

Build a Mansard loft conversion - £52,015

Loft conversion - £33,893

Build a kitchen extension - £42,015

Hip to gable loft conversion - £42,015

Granny annexe - £87,015

Garden office - £10,015

Convert a Garage - £16,015

Garage - £18,515

Build a flat roof extension - £22,015

Build a dormer loft conversion - £42,015

Concrete foundations - £6,265

Convert a bungalow loft - £29,015

Convert a basement - £37,671