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Best Licensed Door & Gate Contractors in San Leandro, CA

9 door and gate companies registered in San Leandro hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.

How we chose: We identified 9 companies registered in San Leandro. 9 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.R & S Erection Incorporated

    ✓ CSLB License #285120 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1973
    Phone
    (510) 483-3710

  2. 2.Security Central Inc. DBA Reed Brothers Security

    ✓ CSLB License #681462 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1993
    Phone
    (510) 652-2477

  3. 3.Commercial Door And Frame Inc.

    ✓ CSLB License #951855 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2010
    Phone
    (510) 957-5108

  4. 4.All Bay Garage Doors Inc.

    ✓ CSLB License #964684 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2011
    Phone
    (510) 969-7167

  5. 5.Frontier Building Products Pacific Inc.

    ✓ CSLB License #1058493 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2019
    Phone
    (510) 935-0086

  6. 6.Centrified Security Solutions Inc.

    ✓ CSLB License #1075698 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2021
    Phone
    (925) 245-1213

  7. 7.Kasbrook Inc.

    ✓ CSLB License #1143568 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2025
    Phone
    (510) 410-1026

  8. 8.R & S Overhead Doors Of San Diego Inc.

    ✓ CSLB License #321078 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1976
    Phone
    (510) 483-9700

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
R & S Erection Incorporated#285120On file1973
Security Central Inc. DBA Reed Brothers Security#681462On file1993
Commercial Door And Frame Inc.#951855On file2010
All Bay Garage Doors Inc.#964684On file2011
Frontier Building Products Pacific Inc.#1058493On file2019
Centrified Security Solutions Inc.#1075698On file2021

Alameda County door and gate licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 82 active D-28 doors, gates and activating devices licenses in Alameda County, 9 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 15 years, and the longest-standing one dates to 1973. 7 of San Leandro's 9 licenses (77.8%) 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: 82 of the county's 82 licenses carry the same $25,000 bond California sets by statute. 5 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.

Door & Gate Contractors in San Leandro: common questions

How many licensed door and gate contractors are there in San Leandro?

9 active D-28 doors, gates and activating devices licenses are registered in San Leandro, out of 82 across Alameda County. 9 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 door and gate contractors?

Yes. California licenses contractors by classification, and D-28 is the CSLB classification that authorises this work. 9 active D-28 doors, gates and activating devices licenses are registered in San Leandro and 82 across Alameda County, the longest-standing issued in 1973. Only CLEAR, unexpired licenses appear here.

How do I check a door and gate 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 7 of San Leandro's 9 currently carry. 5 Alameda County licenses expire within 90 days.

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