From £10,072
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 £10,144
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 £9,888
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 £10,144
Welcome to Sheek Contractors. We specialise in maintaining commercial properties for both business and private owners. Our highly skilled tradesm...
From £9,888
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 £10,144
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 £9,880
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 £9,896
Need to find an Extension Builder near you for all your extension buildering work?
Newman Multi Trade Services provides a local, trusted ex...
From £10,008
Murrill Carpentry & Building Ltd are a well established, reliable, trustworthy, family run company with over twelve years experience.We are...
From £10,112
Need to find an Extension Builder near you for all your extension buildering work?
S Walker Construction provides a local, trusted extensio...

Outbuilding costs in CM1 range from the cheapest of £9,880 (ACK ENGINEERING LTD based in CM1) to the dearest of £10,144 (Ryan & Co Design & Build based in CM1), 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 CM1 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Chelmsford | £33 | £224 |
| Outbuilding near Billericay | £34 | £219 |
| Outbuilding near Witham | £31 | £208 |
| Outbuilding near Wickford | £34 | £225 |
| Outbuilding near Braintree | £32 | £218 |
| Outbuilding near Brentwood | £34 | £225 |
| Outbuilding near Maldon | £32 | £213 |
| Outbuilding near Basildon | £34 | £220 |
| Outbuilding near Rayleigh | £34 | £223 |
| Outbuilding 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