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On April 25, 1965, the firm of Daniel Shapiro, Structural Engineer was formed. This small engineering company was headquartered in the Maybeck Building at 1736 Stockton Street in San Francisco. It was renamed Shapiro and Okino, Engineers when, in 1966, Harry Okino, C.E. joined as a partner. John Hom, S.E. joined the firm in 1970 as the third partner, thus establishing the firm as Shapiro, Okino, Hom and Associates, Engineers.


Over the next several years, the firm served the public and private sectors in and around the San Francisco Bay Area, providing seismic resistant design for new buildings, and seismic evaluation and rehabilitation design of existing buildings. Within a short time, the firm established a solid reputation within the community.

In 1987, the firm changed its name to SOH & Associates, Structural Engineers. The firm remained in the Maybeck Building for more than 25 years until it moved to Marathon Plaza in the early 1990s. In 1990, Frankie Lee was named President and Chief Executive Officer. In the ensuing years, the firm grew and diversified into broader services and project types, and added a Bridge & Transportation Division. In 1997, the firm became SOHA Engineers. Stephen Lau was promoted to President & CEO in April 2000, after being with the firm for more than 20 years, and brought SOHA much success while at their San Francisco office at 48 Colin P. Kelly Jr. Street, employing more than 30 engineering, technical, and administrative professionals.

At the start of 2022, SOHA's office relocated to 594 Howard Street, Suite 400 in downtown San Francisco with a secondary location at in Alameda County at 1670 Alvarado Street, Suite 3, San Leandro. Today, SOHA Engineers' leadership team is led by Farshad Khodayari as President beginning January 2022 along with Principals, Gerard Madden and Larry Chambers. SOHA Engineers continues the tradition of remaining at the forefront of state-of-the-art seismic design and rehabilitation by providing high quality structural engineering services.

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