LEDDY MAYTUM STACY Architects

Architecture and PlanningCalifornia, United States11-50 Employees

LMSA is a San Francisco-based architecture and planning practice focused on mission-driven, sustainable design. The firm earned recognition for the 2017 National AIA Architecture Firm Award, and its portfolio encompasses affordable and special needs housing, educational and university facilities, adaptive reuse, historic rehabilitation, nonprofit work, and design for autism. Its design approach emphasizes open collaboration with clients and end users to create environments that meet or exceed expectations.

LMSA positions itself as a national leader in resource-efficient, low-carbon architecture and provides both architectural design services and LEED consultation. In 2026, the firm was selected by San Francisco University High School for its first ground-up project.

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