AT DUO,
PEOPLE MAKE THE DIFFERENCE

Duo Building Ltd, was established in 1979 by Patrick Malloy and Zoltan Balogh in
London, Ontario. We started as a small general contracting firm and grew to become an award-winning, full service design/build company. We are proud of our long list of satisfied customers and glowing referrals. Our practical but imaginative design, and our dedication to quality and service give you peach of mind before and after you renovate.

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 ensure the quality and delivery of all components of every job. Duo represents quality through experience and dedication to the customer.