The goal of this project is to aid the recovery of locally declining bat species, by: 1) Creating a thermally stable, long-term (i.e., 50-75 years) roost site, or bat hotel, on the El Monte Preserve; 2) Creating replicable building plans for the "bat hotel" so it can be used as a prototype on other conserved lands; and 3) Engaging and educating the public about the ecological importance and conservation value of bats, both online and through in-person educational events. Both the Townsend's big-eared bat (Corynorhinus townsendii) and pallid bat (Antrozous pallidus), California Species of Special Concern, were observed within 3.5 miles of the El Monte Preserve during 2017 bat surveys conducted at El Monte County Park. De Boer Engineering will build the roosting structure in close coordination with Drew Stokes, Wildlife Biologist and local bat expert for the San Diego Natural History Museum. Together, de Boer Engineering and Mr. Stokes designed the structure to be long lasting, low maintenance, and cost efficient. We envision the "bat hotel" as a prototype for additional structures to be constructed on suitable preserves throughout the MSCP Plan Area, thereby contributing to a long-term recovery strategy for this taxon on a landscape scale. This project is fully funded by SANDAG TransNet EMP Land Management Grant #S1125486