Bestopedia Rankings

Best General Contractors in Irwindale, California

Ranked by the Bestopedia Trust Score, computed from CSLB license, bond, and workers’ compensation records.

Last updated July 11, 2026

  1. Electric Service & Supply Co of Pasadena

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    100 / 100 Trust Score

  2. Png Builders

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    100 / 100 Trust Score

  3. American Grandstand Seating Co Inc

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    96 / 100 Trust Score

  4. Gammill Electric Inc

    License standing CLEAR, bonded, workers’ comp not current.

    Listed
    91 / 100 Trust Score

  5. Los Angeles Plumbing & Backflow Testing Inc

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    89 / 100 Trust Score

  6. Alliance General Contractors

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    89 / 100 Trust Score

  7. Roelle Michael G Plumbing & Fire Sprinkler Contractor Inc

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    88 / 100 Trust Score

  8. California Maintenance & Environmental

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    88 / 100 Trust Score

  9. Irwindale Windows Co

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    88 / 100 Trust Score

  10. Best Ridge Line Inc

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    78 / 100 Trust Score

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

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

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