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Best Licensed General Contractors in San Leandro, CA

278 general contractors registered in San Leandro 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 278 companies registered in San Leandro. 278 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.Eric F Anderson Incorporated

    ✓ CSLB License #82540 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1945
    Phone
    (510) 430-8404

  2. 2.Western Roofing Service

    ✓ CSLB License #180533 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1959
    Phone
    (510) 686-4951

  3. 3.Wes-Co Industries

    ✓ CSLB License #246673 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1967
    Phone
    (510) 534-3320

  4. 4.Cal Phase Electric Inc.

    ✓ CSLB License #256896 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1969
    Phone
    (925) 671-9200

  5. 5.Alco Iron & Metal Co

    ✓ CSLB License #293917 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1974
    Phone
    (510) 562-1107

  6. 6.Chambers General Construction Inc.

    ✓ CSLB License #315008 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1976
    Phone
    (510) 569-3081

  7. 7.San Leandro Door Company

    ✓ CSLB License #318174 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1976
    Phone
    (510) 351-1111

  8. 8.Welte Construction Inc.

    ✓ CSLB License #410148 - look up this number at CSLB
    Verified
    August 22, 2026
    Licensed since
    1981
    Phone
    (510) 614-0800

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
Eric F Anderson Incorporated#82540On file1945
Western Roofing Service#180533On file1959
Wes-Co Industries#246673On file1967
Cal Phase Electric Inc.#256896On file1969
Alco Iron & Metal Co#293917On file1974
Chambers General Construction Inc.#315008On file1976

Alameda 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: 3,239 active B general building contractor licenses in Alameda County, 285 of them registered in San Leandro. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Leandro license has been held 12 years, and the longest-standing one dates to 1945. 132 of San Leandro's 285 licenses (46.3%) 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: 3,237 of the county's 3,239 licenses carry the same $25,000 bond California sets by statute. 250 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 San Leandro: common questions

How many licensed general contractors are there in San Leandro?

285 active B general building contractor licenses are registered in San Leandro, out of 3,239 across Alameda County. 278 San Leandro-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. 285 active B general building contractor licenses are registered in San Leandro and 3,239 across Alameda County, the longest-standing issued in 1945. 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 132 of San Leandro's 285 currently carry. 250 Alameda County licenses expire within 90 days.

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