Probabilistic Landslide Assessment Cost Estimation System (PLACES) uses conditional probability theory and laws of expectation and variance to estimate numbers and costs of future damaging landslides. The estimated annual cost of future landslides in the entire region is about US $15 million. The estimated annual cost is highest for San Mateo County and lowest for Solano County. Landslides triggered by rainstorms occur nearly every year in the San Francisco Bay region. Most landslides occur during the late fall through early spring seasons, typically between December and April. Future direct costs were estimated using a newly developed PLACES. Santa Cruz County has the highest estimated number of annual damaging landslides, whereas Napa, San Francisco, and Solano Counties have the lowest estimated number of damaging landslides.