Serrano Fire Protection Systems designs, permits and installs fire sprinkler systems for residential, commercial, ADU and mixed-use buildings. It also installs standpipe systems and carries out water supply analysis. The firm has operated since 2001 from Petaluma and works across San Francisco, Marin, Sonoma, Napa and the wider Bay Area. It holds California C-16 Fire Protection Contractor licence 789820 (CSLB) and CAL FIRE licence A030607.