We are a family owned and operated specialty contractor operating in California since 1978 encompassing two generations. We are amongst the first firms to install Helical Anchor Products for residential underpinning in the U.S. beginning in the 1980’s as an original A.B. Chance certified installer. We continue to conduct business throughout the bay area and beyond blending innovation and creativity to execute our work on new and existing structures. Much of our work involves technically challenging construction in very difficult and sensitive environments.


Sunstone corrects, protects, saves and creates space.

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