Bestopedia Rankings

Best Roofers in Union City, California

Ranked by the Bestopedia Trust Score, drawn from verified CSLB license, bond, and workers’-comp records. Rankings are earned — never for sale.

Last updated July 8, 2026

  1. Haight D Roofing Contractor

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  2. Bay Area Roofing Master Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    84 / 100 Trust Score

  3. Alphabet Roofing Corporation

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    80 / 100 Trust Score

  4. Rmg Roofing

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    80 / 100 Trust Score

  5. Bayshield Roofing

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    80 / 100 Trust Score

noun /best-oh-PEE-dee-uh/

a curated ranking of the best in any category, based on independent review.