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Best Licensed General Contractors in Rosemead, CA

114 general contractors registered in Rosemead hold current CSLB licenses, verified against official records as of August 22, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.

How we chose: We identified 114 companies registered in Rosemead. 114 passed license verification. The 8 below are the top-ranked of those. Our methodology

We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.

  1. 1.Ampert Development Inc.

    ✓ CSLB License #482800 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1985
    Phone
    (626) 285-7808

  2. 2.Air Care Mechanical Co

    ✓ CSLB License #516562 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1987
    Phone
    (626) 216-6769

  3. 3.T D T Contractor Inc.

    ✓ CSLB License #521176 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1987
    Phone
    (626) 523-4691

  4. 4.Pacific Great West Construction Inc.

    ✓ CSLB License #557191 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1989
    Phone
    (626) 230-7707

  5. 5.Leavon Development Inc.

    ✓ CSLB License #613257 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1991
    Phone
    (626) 260-4600

  6. 6.J P Construction Co

    ✓ CSLB License #642751 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1992
    Phone
    (626) 572-9181

  7. 7.American Tech Construction

    ✓ CSLB License #662300 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1993
    Phone
    (626) 757-9521

  8. 8.T Y Construction Inc.

    ✓ CSLB License #716679 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1995
    Phone
    (626) 315-4338

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
Ampert Development Inc.#482800On file1985
Air Care Mechanical Co#516562On file1987
T D T Contractor Inc.#521176On file1987
Pacific Great West Construction Inc.#557191On file1989
Leavon Development Inc.#613257On file1991
J P Construction Co#642751On file1992

Los Angeles County general building licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 20,659 active B general building contractor licenses in Los Angeles County, 117 of them registered in Rosemead. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Rosemead license has been held 9 years, and the longest-standing one dates to 1970. 49 of Rosemead's 117 licenses (41.9%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 20,631 of the county's 20,659 licenses carry the same $25,000 bond California sets by statute. 1,744 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.

General Contractors in Rosemead: common questions

How many licensed general contractors are there in Rosemead?

117 active B general building contractor licenses are registered in Rosemead, out of 20,659 across Los Angeles County. 114 Rosemead-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license general contractors?

Yes. California licenses contractors by classification, and B is the CSLB classification that authorises this work. 117 active B general building contractor licenses are registered in Rosemead and 20,659 across Los Angeles County, the longest-standing issued in 1970. Only CLEAR, unexpired licenses appear here.

How do I check a general contractor's license in California?

Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 49 of Rosemead's 117 currently carry. 1,744 Los Angeles County licenses expire within 90 days.

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