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A large property with a small extension at the back leading out onto the garden

Domestic and commercial clients

Do you need more space for your home or business? Save yourself the stress and cost of having to move to get the space you need with an extension by the experts. We offer our expert advice to help you maximise your space and we can also help you add value to your property.

JCM Building Contractors Ltd in London cover the surrounding area including Holloway, Woodford and East Barnet. Our dedicated builders provide a quality service putting you at the heart of what we do.


If you have a space in your property that you don't utilise such as a garage or a loft, get a conversion at a price you can afford.


You can get a new room for a bedroom or gym, whatever you fancy. A conversion or extension could also help to make your property easier to rent or sell.

The finishing touches

We can provide all the finishing touches to your extension or conversion including plastering, plumbing, heating and electrical work.


We keep you informed every step of the way and we can work on all types of projects. For more information on any of services please don't hesitate to contact us today.

Get the space you want with an extension or conversion by our experienced team, call:

020 3714 7685

07584 302 002