Leslie Horn, the CEO and Founder of Three Squared, Inc., a Detroit based, woman owned Architecture firm. Leslie has 20+ years of rehab and ground up development experience currently working on Cochrane Commons, a $65M mixed use project in North Corktown. Our mission is to design sustainable, energy efficient and cost effective buildings.

Three Squared Inc. has become a leader in the architectural industry, known for our outstanding in-house design services and dedication to innovative building practices. While our roots in Cargo Architecture and container homes initially brought us into the spotlight, we have since expanded our expertise to include steel framing, Structural Insulated Panels (SIPs), and hybrid construction techniques. This breadth allows us to respond dynamically to client needs while pushing the boundaries of what architecture can achieve to meet each Developer's goal.

We are uniquely positioned to guide projects through every phase—from Pre-Development and initial feasibility studies to the completion of Construction Documents and Construction Administration. Our team’s hands-on approach ensures that every project navigates the complexities of the Municipal Approval process with confidence and precision.

At Three Squared, each project is an opportunity to bring our clients’ visions to life. We understand the value of creating comprehensive, tailored solutions that support unique project needs and deliver architectural excellence from inception to completion. Our portfolio is a testament to our ability to bridge the gap between high-efficiency solutions and breathtaking design.