Cal. Rev. & Tax. Code § 3792

If property tax defaulted for more than five years, or more than three years in the case of nonresidential commercial property, as defined in Section 3691, in an applicable county, has been sold for taxes for two or more years or has been deeded for taxes to two or more taxing agencies, they may make a joint agreement with the board of supervisors under this article. The joint agreement may provide for the conveyance of all or any interest in the property to one of them or to any combination of them.