Description Mercoza was founded to provide premium concrete services in the cities of San Francisco, Bay Area, Palo Alto, Oakland, and San Jose. Our most popular services are concrete walkways, driveways, and foundations. With over 70 years of combined experience, we always offer a high-quality concrete service to our clients. Whether its residential, commercial or industrial, in any project you should only expect one thing, excellence in every phase of construction. We partner with the best in the industry, every slab, foundation, basement and wall will be done right the first time. Contact us today for a Free quote on high-quality concrete work.