Bestopedia Rankings

Best Plumbers in Mill Valley, 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

Our Top Pick

Femenia Pedro & Sons Inc

Trust Score 100/100 — CLEAR license standing, bonded, workers’ comp current.

VERIFIED

  1. Femenia Pedro & Sons Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    100 / 100 Trust Score

  2. Altius Home Services

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    98 / 100 Trust Score

  3. Zion Engineering

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  4. Bayside Remodeling and Construction

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  5. Innovative Piping Systems

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    96 / 100 Trust Score

  6. Dill Plumbing Company

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    94 / 100 Trust Score

  7. Petersen Plumbing Services Inc

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    93 / 100 Trust Score

  8. Delta T Plumbing

    CLEAR license standing, bonded, workers’ comp current.

    VERIFIED
    82 / 100 Trust Score

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

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