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About Us

Duo Building Ltd. is celebrating 40 years in business. What started as a small general contractor, 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 you individual tastes and lifestyle. We provide a team of dedicated professionals who care for the quality and delivery of all the components of every job. Duo represents quality through experience and dedication to the customer.

Services Provided

3D Rendering, Accessory Dwelling Units (ADUs), Architectural Design, Architectural Drawings, Basement Design, Bathroom Design, Bathroom Remodeling, Building Design, Custom Home, Energy-Efficient Homes, Floor Plans, Garage Building, Garage Design, Green Building, Historic Building Conservation, Home Additions, Home Extensions, Home Remodeling, Home Restoration, House Plans, Kitchen Design, Kitchen Remodeling, Laundry Room Design, Mudroom Design, New Home Construction, Outdoor Kitchen Construction, Outdoor Kitchen Design, Porch Design & Construction, Site Planning, Space Planning, Sunroom Design & Construction, Sustainable Design, Custom Homes, General Contracting

Areas Served

London, Southwestern Ontario, & Surrounding Areas


LHBA Awards: Renovator of the Year 2016 & 2017 Project of the Year 2016 Best Renovation 2016 up to $30,000 Best New Multi Family Home 2016 over $350,000 Best New Bathroom in a Home 2016 up to $500,000 Green Building Award Best of Houzz Service Award 2014, 2015, 2017 & 2018

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Contact Duo Building Ltd.
Duo Building Ltd.
663 Central Ave.
London, Ontario N5W 3P7