Mason on Mariposa addresses San Francisco’s pressing need for multi-family housing, offering 299 new homes in the heart of the Potrero Hill neighborhood. As Executive Architect, we played a pivotal role in delivering this complex, three-building development on 3.5 acres, which includes residential units, retail space, and a new publicly accessible greenway. This greenway connects Mariposa Street to the 18th Street retail corridor and the nearby elementary school, establishing a welcoming, community-focused environment. Designed to meet the challenges of urban living, Mason on Mariposa reflects a deep commitment to collaboration. Working alongside three design architect teams, our team led the project from initial permitting through to final completion. The development’s three buildings were a feat of engineering and construction, requiring seamless coordination among the client, city officials, engineers, and contractors to meet key milestones. The complex sits nestled into the Potrero Hill landscape, strategically designed with a mid-rise profile to preserve open views of the Bay and San Francisco skyline. At-grade entrances ensure families with strollers or young children can easily navigate to open courtyards designed for gatherings, events, and play. These inviting spaces foster connection, creating opportunities for residents to come together in this family-friendly neighborhood. Sustainability and energy efficiency were top priorities, with innovative solutions like a curtain wall system that combines glass with solar technology to reduce energy loads. Our team, working with experts in accessibility, interior design, and building systems, meticulously coordinated every detail to ensure Mason on Mariposa was both functional and environmentally conscious. Targeting LEED Gold, Mason on Mariposa represents one of the first new multi-family developments in the area, bringing much-needed housing to a neighborhood that’s ideally located near schools, jobs, and retail, all while maintaining strong ties to the city’s dynamic urban fabric.