1 review
From £18,692
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
From £18,812
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in CM15. Please contact us for a free, no obliga...
From £18,684
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in CM15. No obligation free quotes and ...
From £18,684
Relax... you have found a reliable extension builder in CM15. First guard Roofing is a friendly and reliable company based in CM15 who consider no ...
From £19,116
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in CM15 and the surrounding area. Contact us to today to get a com...
From £18,380
Member since August 2025
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,748
At Building Services Contractors we pride ourselves on an efficient and friendly service, and strive to achieve 100% customer satisfaction.
From £20,084
Propello is an established and experienced local extension builder in CM15. Please contact us for a free, no obligation quote and competitive rate...
From £18,924
Nouvell Decor is a trusted extension builder serving customers in CM15 and the surrounding area. Contact us to today to get a competitive quote for...
From £18,812
skilled worker who specializes in completing a wide range of building and renovation projects

Builders charge between £18,380 (Can design and Construction based in Ig11) and £20,084 (Propello based in E17) in CM15 to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in CM15 by posting a job with HaMuch and we will send it to extension builders in CM15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garage near Brentwood | £39 | £255 |
| Garage near Billericay | £38 | £248 |
| Garage near Romford | £45 | £274 |
| Garage near Basildon | £39 | £251 |
| Garage near South Ockendon | £58 | £276 |
| Garage near Chelmsford | £38 | £258 |
| Garage near Wickford | £39 | £255 |
| Garage near Stanford-le-Hope | £40 | £254 |
| Garage near Loughton | £44 | £273 |
| Garage near Thurrock | £41 | £260 |
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 - £17,894

Two storey extension - £88,590

Build a timber frame extension - £26,394

Build a swimming pool - £81,394

Single storey extension - £62,872

Side return extension - £45,928

Install an RSJ - £2,594

Outbuilding - £10,394

Build a Mansard loft conversion - £52,394

Loft conversion - £37,440

Build a kitchen extension - £42,394

Hip to gable loft conversion - £42,394

Granny annexe - £87,394

Garden office - £10,394

Convert a Garage - £16,394

Garage - £18,894

Build a flat roof extension - £22,394

Build a dormer loft conversion - £42,394

Concrete foundations - £6,644

Convert a bungalow loft - £29,394

Convert a basement - £41,928