LSA Associates, Inc. is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm formed by Larry Seeman in 1976, then called Larry Seeman Associates. The firm was designed to meet the need for environmental evaluation as a result of the passage of the California Environmental Quality Act (CEQA).

Since LSA's founding in 1976, LSA has grown into a full-service consulting firm that continues to grow in terms of markets it serves and services it provides.

100 percent employee-owned LSA has ten California offices located in Berkeley, Carlsbad, Fresno, Irvine, Palm Springs, Point Richmond, Riverside, Rocklin, San Luis Obispo, South San Francisco, and one office in Fort Collins, Colorado. LSA has over 250 full-time employees capable of handling a broad range of project assignments, both large and small. LSA has served a variety of private industry and public agency clients, many of whom have been clients for more than 20 years.