
After building brands, delivery systems, and financial products, Carl Gish turned to the American house. His wager at Aro Homes is that better design, factory precision, and patient research can make homebuilding work as one connected system.
Factory OS is a Vallejo, California modular-housing manufacturer that builds wood-frame multifamily apartments inside a former Mare Island Navy shipyard. Co-founded in 2017 by affordable-housing veteran Rick Holliday and contractor Larry Pace, the company treats apartments like cars: rolling them down an assembly line with union labor, cutting build times by ~40% and costs by 20–40% compared with conventional construction.