Taxon-specific range maps and habitat models are integral tools for conservation and management planning, particularly for rare species. As environmental conditions change over time and as new data collection tools facilitate an increase in species detections, updates to existing maps are needed. The Range and Distribution Mapping and Analysis Project (RADMAP) is heading the effort to develop, update, and compile range maps and habitat models for the California Department of Fish and Wildlife (CDFW). RADMAP is updating range maps for priority species throughout the state and publishing these on CDFW’s online Biogeographic Information and Observation System (BIOS) for immediate use by partner organizations and stakeholders. Simultaneously, RADMAP is compiling species habitat models (SHM) from across their partner network into an accessible library of range maps and SHMs. The library houses one CDFW vetted range map and SHM per priority taxon, representing its spatial use on the landscape. For species lacking an existing robust SHM, RADMAP’s ecological modelers create them with the aid of expert reviewers. Each map and model meets minimum criteria that allow for an assessment of model confidence, including expert review and adequate metadata describing model parameters and validation statistics.