Since 1979...

Duo Building Ltd. was established in 1979 by Patrick Malloy and Zoltan Balogh in London, Ontario as a Design and Build Construction Company. We are proud of our long list of satisfied customers and our strong referral base. Practical, imaginative design, dedication to quality and service, give you peace of mind before you renovate.  And after.

We are committed to being a leader in design and build renovations.  We work closely with you to create custom designs to suit your individual tastes and lifestyle.  We provide a team of dedicated professionals who care for the quality and delivery of all the components to the total job.  Duo represents quality through experience and dedication to the customer.

Meet our team...