The Mayfair Station Apartments development consists of a 156-unit market-rate residential building with ground-floor commercial space and a 69-unit affordable housing building located adjacent to the El Cerrito Del Norte Bay Area Rapid Transit (BART) station. This flagship project is part of the City of El Cerrito’s campaign to increase density and produce more housing along San Pablo as part of the Specific Plan adopted in 2014.
Site Square Footage: 68,489 sq. ft.
Date Completed: In Progress
Client: Holliday Development (market-rate building); BRIDGE Housing (affordable building)
Architect: Lowney Architecture
Structural Engineer: DCI Engineers (market-rate building); KPFF (affordable building)
Civil Engineer: BKF Engineers
General Contractor: Cannon Constructors (market-rate building)
The completed market-rate residential development consists of five stories of factory-built, modular, wood-framed construction above a concrete garage in a podium configuration. Retail spaces fronting San Pablo Avenue are on the first level, with the garage nested behind. The affordable residential building, currently in the final design process, will consist of five levels of residential units over a one-level, at-grade concrete podium that will house parking and amenity spaces. Following the investigation, Rockridge Geotechnical (RG) determined the primary geotechnical issues at the site were providing adequate foundation support, the presence of undocumented fill in former underground storage tank locations, shallow groundwater, and the potential presence of very shallow liquefiable deposits in isolated areas beneath the buildings. Rockridge Geotechnical’s recommendations included dewatering and providing 18 inches of lime and/or cement-treated soil paired with a reinforced concrete mat foundation.