To be recognized as one of California’s best construction companies
working with passion and professionalism while providing high
standard projects.


Corner Keystone Construction Corporation’s mission is to undertake as successfully complete construction jobs for residential, commercial and public works vertical and horizontal structures, satisfying the set forth standards and constantly exceeding our client’s expectations.

Contractors State License Board Licensed Contractor

B - General Building Contractor

A general building contractor is a contractor whose principal contracting business is in connection with any structure built, being built, or to be built, for the support, shelter, and enclosure of persons, animals, chattels, or movable property of any kind, requiring in its construction the use of at least two unrelated building trades or crafts, or to do or superintend the whole or any part thereof.


C33 - Painting and Decorating Contractor

A painting and decorating contractor prepares by scraping, sandblasting or other means and applies any of the following: paints, papers, textures, fabrics, pigments, oils, turpentines, japans, driers, thinners, varnishes, shellacs, stains, fillers, waxes, adhesives, water and any other vehicles, mediums and materials which adhere by evaporation and may be mixed…


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