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 peace 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.

PROFESSIONAL AFFILIATES

With our 30 plus years renovating homes in London, we have grown with the knowledge acquired
from many local and national organizations. It is with our continued membership and support from
the following professional organizations that we remain an industry leader in quality and
customer dedication.