Currently President-Elect of the California Land Surveyors Association, Warren began his surveying career in his home town with the City of Fairfield in 1975.  He obtained his LSIT in 1977, and started work with MacKay & Somps, preparing final maps and topographic surveys.

He moved to Tacoma in 1979 as Chief of Parties for PacificTech.  After obtaining his California Land Surveyor’s license in 1980, he moved to San Francisco, working for TransAmerican Engineers as a staff surveyor.  In 1984, he moved to Oxnard, working for Neil Cummins, LS and Attorney.

Warren joined CLSA in 1986 as a member of the Los Angeles/Ventura chapter.  He became Oxnard’s City Surveyor in 1990.  In 2013, he became the San Joaquin County Surveyor.  He is active in the Surveyor’s Policy Committee of CEAC, being name County Surveyor of the Year of 2017.

Warren is also active in the League of California Surveying Organization.  He became the Tuolumne County Surveyor in 2018, and lives in Sonora with his wife, Patricia.  They have seven sons and 14 grandchildren.

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