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About Extension Factory

Extension Factory provides home extensions and renovations for Melbourne homes. So, if you are considering a house extension or renovation contact us and we’ll find the right solution for you. From concept to completion we do the lot. We take care of it all.

Since our inception in 1979 Extension Factory has been helping Australians create their dream home... ... by improving the one they’re already in!

  • whether it’s a ground floor or a 2nd storey extension, new kitchen / family / meals area, parents retreat, extra bedrooms, home theatre, an entire makeover or just extra living space for the kids, we do it all, whatever your home renovation needs are, with over 35 years experience Extension Factory can build it
  • and while we’re extending your home why not renovate your old kitchen and bathroom or even add an al fresco dining area
  • our Kitchen Renovation Service offers quality Kitchens at budget prices


We have acquired a formidable reputation over the last 35 years as Australia’s largest Home Improvement/Extension Company, built upon innovative yet practical design, excellent customer service, quality of product and speed of construction. All our work is project managed by qualified Building Project Managers and is backed by our extended 10 year structural guarantee.

We design and build all types of home extensions and additions, whether it’s Federation or Contemporary, ground floor or a whole new 2nd storey, you’d be hard pressed to see where the existing home ends and our home addition begins. Our Kitchen Renovation Service offers quality Kitchens at budget prices.

Call us now for a free no obligation consultation 03 9561 5444.

And by taking advantage of our exclusive 12 months No Interest & No Repayments finance offer you can afford the lifestyle you want a lot earlier than you thought. Our clients benefit from our experience, professionalism and competitive pricing derived from our buying power.

Our Group

Extension Factory forms part of a privately owned group of companies that started out in 1979 and has over 35 years of experience. The group includes:

The Extension Factory TV Commercial 2015