San Benito Engineering & Surveying, Inc. is a general practice civil engineering and land surveying firm. The firm was established as W. J. Hanna & Son in 1910 by Walter J. Hanna to serve the Santa Clara, San Benito, and Monterey Counties area. The Hollister office was later split off and incorporated as San Benito Engineering & Surveying Inc. The firm provides professional services to public agencies (cities, counties, special districts) and private clients.