From £88,108
Need an Extension Builder in CM1? Genesis has been helping local clients (20 mile radius) with their extension buildering jobs for many years. Get ...
From £88,216
Relax... you have found a reliable extension builder in CM1. Ryan & Co Design & Build is a friendly and reliable company based in CM1 who consider ...
From £87,832
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £88,216
Welcome to Sheek Contractors. We specialise in maintaining commercial properties for both business and private owners. Our highly skilled tradesm...
From £87,832
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...
From £88,216
Durrant Construction was formed in 2012 by Luke Durrant. Luke has been in the building trade for over 15 years and has had substantial experience i...
From £87,820
ACK ENGINEERING LTD is an established and experienced local extension builder in CM1. Please contact us for a free, no obligation quote and competi...
From £87,844
Need to find an Extension Builder near you for all your extension buildering work?
Newman Multi Trade Services provides a local, trusted ex...
From £88,012
Murrill Carpentry & Building Ltd are a well established, reliable, trustworthy, family run company with over twelve years experience.We are...
From £88,168
Need to find an Extension Builder near you for all your extension buildering work?
S Walker Construction provides a local, trusted extensio...

Costs range from £87,820 (ACK ENGINEERING LTD based in CM1) to £88,216 (Ryan & Co Design & Build based in CM1), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Chelmsford | £33 | £224 |
| Two Storey Extension near Billericay | £34 | £219 |
| Two Storey Extension near Witham | £31 | £208 |
| Two Storey Extension near Wickford | £34 | £225 |
| Two Storey Extension near Braintree | £32 | £218 |
| Two Storey Extension near Brentwood | £34 | £225 |
| Two Storey Extension near Maldon | £32 | £213 |
| Two Storey Extension near Basildon | £34 | £220 |
| Two Storey Extension near Rayleigh | £34 | £223 |
| Two Storey Extension near Bishop's Stortford | £36 | £229 |
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 - £17,518

Two storey extension - £88,026

Build a timber frame extension - £26,018

Build a swimming pool - £81,018

Single storey extension - £55,352

Side return extension - £41,698

Install an RSJ - £2,218

Outbuilding - £10,018

Build a Mansard loft conversion - £52,018

Loft conversion - £33,915

Build a kitchen extension - £42,018

Hip to gable loft conversion - £42,018

Granny annexe - £87,018

Garden office - £10,018

Convert a Garage - £16,018

Garage - £18,518

Build a flat roof extension - £22,018

Build a dormer loft conversion - £42,018

Concrete foundations - £6,268

Convert a bungalow loft - £29,018

Convert a basement - £37,698