Member Directory FiltersClear () Member Type contractor (1) Contractor Specialties (-) concrete architectural structural (1) concrete flatwork precast stamp work (1) general engineering (1) Territory (-) Alameda County (1) Location Primary Location (1) Interested in becoming a member of United Contractors? Join us here. All A B C G J L M P R S V Showing Results (1 - 1) of 1 Vanguard Construction Member since May 2004 (925) 245-1300 Platinum Annual Sponsors All 2025 Annual Sponsors