Bestopedia Rankings

Best Plumbers in Cupertino, 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. Pacific Northstar Mechanical Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  2. J & R Plumbing Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  3. A - Tech Plumbing & Fire Protection

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  4. Just Faucets

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    85 / 100 Trust Score

  5. Magic Plumbing Services LLC

    CLEAR license standing, bond not current, workers’ comp current.

    LISTED
    67 / 100 Trust Score

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

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