Bestopedia Rankings

Best General Contractors in Diamond Bar, California

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

Last updated July 10, 2026

Our Top Pick

Kertland Roofing Inc

Trust Score 94/100. License standing CLEAR, bonded, workers’ comp current.

Verified

  1. Kertland Roofing Inc

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    94 / 100 Trust Score

  2. Cornerstone Construction Co

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    93 / 100 Trust Score

  3. Pirelli A W

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    92 / 100 Trust Score

  4. Arora Jay

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    91 / 100 Trust Score

  5. M T Quality Construction

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    90 / 100 Trust Score

  6. M D B Design Associates

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    90 / 100 Trust Score

  7. Zip Renovation & Air

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    90 / 100 Trust Score

  8. Pub Construction Inc

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    90 / 100 Trust Score

  9. Place Construction & Development Inc

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    89 / 100 Trust Score

  10. Halstead Todd Michael

    License standing CLEAR, bonded, workers’ comp current.

    Verified
    89 / 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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