Landscape-level camera trapping studies (>200 cameras at 0.5 – 1.0 km intervals) were conducted in three San Francisco Bay Area counties in California, USA between 2014 and 2024 to monitor biodiversity. The study areas included protected lands under multiple jurisdictions with varying levels of public access. Image data were managed using Wildlife Insights. Analyses included determining mammalian richness, species trends, and a biodiversity index unique to each array. Reporting was standardized to facilitate comparisons among Bay Area counties that support diverse microhabitats yet share a majority of expected species. We identify hallmarks of a healthy ecosystem and compare trophic communities in terms of richness and occupancy levels whilst attempting to identify drivers for these patterns. In addition to our key findings, insights from this standardized approach can provide the basis for identifying keystone species, direction of community structuring (top down and bottom up), and capture regime shifts in certain trophic levels post-wildfire. Long-term monitoring is crucial for establishing credible baselines and trends upon which to measure, and gain insight into, ecological change.