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Midwest Multi-Disciplinary Engineering Firm William Tao & Associates Joins Mazzetti


Mazzetti and William Tao & Associates merger expands innovative engineering design and consulting services, nationwide

SAN FRANCISCO (August 1, 2018) – Mazzetti Inc., a global MEP engineering and technology consulting firm, and St. Louis-based William Tao & Associates (WTA), multi-disciplinary engineers serving nationwide clients, have merged. The merged company will retain the Mazzetti Inc. name.

“As our clients nationalize, they need expertise in close proximity to their many locations. WTA brings us expertise in the Midwest to better serve clients in this geographical location,” said Walt Vernon, Mazzetti CEO. “WTA also brings a similar employee-owned culture, complimenting that of Mazzetti’s. We highly prioritize cultural fit to ensure a thriving work environment, yielding better (more innovative) outcomes for our clients.”

Lisa Sombart, WTA CEO and President, will be a Mazzetti Principal, leading the St. Louis Team as part of the Mazzetti East Region.

The combined firm will have a staff of 206 and 11 locations: Irvine, Sacramento and San Francisco, Calif.; Denver, Colo.; Atlanta, Georgia; St. Louis, Missouri.; Portland, Ore.; Nashville, Tenn.; Dallas, Texas; Seattle, Wash.; and Bengaluru, India.

“WTA is a recognized leader in innovative engineering and energy-effective building systems with a diverse award winning portfolio in healthcare, labs, and higher education,” said Sombart. “This merger will enhance our existing track record of quality, award winning design, while furthering our client reach.”

For more than 55 years, Mazzetti has consulted sophisticated nationwide clients in the planning, design, and operations for technologically advanced, energy efficient facilities. The addition of WTA will enable Mazzetti to further this mission, particularly in the Midwest.

Media Contact: Jessica Hamann, Director of Corporate Marketing


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