Old Towne Preservation Association (OTPA), a public benefit non-profit organization, was established in February of 1986 to preserve, protect and enhance Old Towne Orange, California. This one square mile area contains more than 1,400 structures built before 1940. In 1997, Old Towne Orange became a national historic district and was placed in the National Registry of Historic Places. This makes it the largest, contiguous residential historic district in the State of California.
OTPA works to maintain the historic integrity and economic viability of the area through education, community involvement, and service projects which support the concerns of Orange residents in preserving this neighborhood for future generations