Union Oil Research Laboratories (site) (Brea, California)

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Unocal Science and Technology Division
Hartley Center
376 S. Valencia Ave.
Brea, CA 92621
(714) 577-1625

Land space: 120 acres total

Up until the time of the merger with Chevron in 2005, Unocal senior executive staff was housed in El Segundo, CA and corporate support staff was based here, in Brea, CA.

This site also housed Unocal's Hartley Center, a 400-seat, performing-arts auditorium, named after former Unocal president Fred L. Hartley.
The auditorium was designed by renowned architect William Pereira, who also designed San Francisco’s Transamerica building.
The Hartley Center was used for annual shareholder meetings, but also for many community gatherings and fund-raising performances, including one by country music star Willie Nelson.
Arts supporters had lobbied Brea to save the building as a regional arts center. Brea looked into cost estimates, but in the end, Unocal never offered to sell the building. Company officials have said saving the Hartley Center did not fit with its development plans for the site.

La Floresta, a proposed mixed-use community by Chevron and Standard Pacific, is planned at the former Unocal Hartley Center property.
It will include approximately 1,088 residential units including active adult single family homes, condos and independent living as well as non-age restricted single family homes, town homes, live/work and a commercial/retail mixed-use village.
An additional 247 town homes and workforce housing units are proposed at a second location on Kraemer adjacent to the Birch Hills Golf Course.