Association Reserves- California's West Hills Reserve Study Provider is a professional building and real estate consulting company that provides Reserve Studies and long term budget solutions for properties of all shapes and sizes in Inyo County, Kern County, Los Angeles County, Mono County, and Tulare County.. Established in 1886, Association Reserves serves clients throughout the United States and the world. We perform over 4,000 Reserve Studies each year, from regional offices staffed specifically for this unique field of expertise.