Nelson T. Lewis Construction CO., Inc has gained a reputation as a full-service contracting company that communicates well, completes its projects in a timely fashion and ensures quality craftsmanship at competitive prices. One of the oldest general contracting firms still active in the San Francisco Bay Area, the company is experienced in design/build projects ; concrete tilt-up, masonry and wood-frame buildings ; tenant improvements ; biotech and medical device projects ; seismic upgrades ; banks, convalescent and hospital projects ; and other types of construction for commercial, industrial, high tech and internet businesses. Located near downtown Hayward the Company performs construction work throughout the greater San Francisco Bay Area extending from Los Gatos to Vacaville and from Halfmoon Bay to Tracy. Nelson T. Lewis Construction is particularly proud of its long-standing continuing relationships with our clientele. Approximately 60% to 70% of our work is repeat negotiated work with the balance of our work being competitive bid. .