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LSA 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). By 1984, the year the employee stock ownership plan was initiated, LSA had grown to 25 employees in 2 offices. Now with over 180 full-time employees, LSA has grown into a full-service consulting firm that continues to grow in terms of the markets we serve and the services we provide.


LSA is recognized as an innovator in the fields of service we offer. The company has developed a reputation among clients and peers as being thorough, innovative, and objective. Our professionals build long-standing relationships with our clients through sound decision-making, collaboration, and creative solutions in all 9 of our California offices.

LSA realizes that clients do not hire companies, they hire people. LSA’s people are a diverse group of highly skilled professionals, many of whom are recognized experts in their field. Each Principal of the firm is personally responsible for the quality and timeliness of work. A final measure of LSA’s ability to deliver quality products on time and within budget can be confirmed by our long list of valued clients.

Meet Our People

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