The San Joaquin County Neighborhood Preservation Division administers the County's U.S. Department of Housing and Urban Development (HUD) Grant programs and other state and federal grant programs. In the administration of these programs, the Neighborhood Preservation Division also operates housing rehabilitation and homeownership programs.

It is the intent of the Neighborhood Preservation Division to provide the organization, vision, and means by which citizens have access to programs to improve their standard of living, which includes the preservation and increased vitality of neighborhoods.