Malibu/Lost Hills Sheriff's Station 27050 Agoura Rd, Agoura, CA91301 The Malibu/Lost Hills Sheriff's Department is a branch of the Los Angeles Sheriff's Department serving the communities…More of Agoura Hills, Calabasas, Chatsworth, Hidden Hills and Westlake Village. Unincorporated communities include Chatsworth Lake Manor, Malibou Lake, Topanga and West Hills. The station opened its doors in 1991, and around 160 sworn officers are currently employed there. The department is currently headed by Capt. Joseph H. Stephen Jr., who is supported by six lieutenants.