Theorem Developments is a boutique developer-builder specializing in missing middle housing across Metro Vancouver. Focused on laneway homes, duplexes, and multiplex projects, the firm creates thoughtfully designed residential buildings that integrate seamlessly into established neighbourhoods while supporting long-term value. Working directly with homeowners, investors, and multi-generational families, Theorem provides end-to-end guidance from early feasibility and municipal approvals through construction. Clients work directly with firm leadership throughout the process, ensuring clear communication, consistent oversight, and efficient decision-making. With over 60 completed residential units and multiple award-winning projects, Theorem is recognized for quality execution, responsible density, and well-designed infill housing.