HMC Architects was selected to design the City of Ontario’s City Hall Annex. The new 60,000 SF office building will provide additional space for the adjacent existing City Hall and allow the city to consolidate disparate departments into one building in the heart of the Downtown Civic Center, which serves as a hub for supporting the community.

The team proposed a two-phased approach to serve the client and their needs. Phase one involves a programming and planning workshop to gather information, understand challenges, build consensus, conceptual design, and environmental review. Phase two begins with schematic design and continues through construction. Our team understood the CEQA process and what would be required for this project, and how it impacts the client’s budget and schedule. These approaches and understanding were key differentiators in our winning the project.

The $40 million project has begun and will be completed in January 2026. Congratulations to the project team of Brandon Gullotti, Simon Solis, Sandra Corazzelli, Trevor Wellman, Krystyna Howell, Jose Arce, Sergio Lechuga, Carolyn Aspa, and the Community + Culture practice.

In 1940, J. Dewey Harnish opened a small architectural office (now HMC Architects) on B Street in Downtown Ontario. There’s so much history in Ontario and we’re so proud to have been a part of it and still making an impact.