We're London's leading design + build renovation company. With 41 years of experience, we specialize in both residential and commercial projects. DUO Building is an award-winning, full service design + build company that specializes in residential and commercial renovations. At DUO, 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. 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.