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Best Licensed Insulation Contractors in Fullerton, CA

4 insulation companies registered in Fullerton hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by years licensed.

How we chose: We identified 4 companies registered in Fullerton. 4 passed license verification. All 4 are listed below. Our methodology

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  1. 1.Thomasville Construction Inc.

    ✓ CSLB License #585556 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1990
    Phone
    (626) 224-8359

  2. 2.A & V Contractors Inc.

    ✓ CSLB License #845252 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2004
    Phone
    (714) 525-3503

  3. 3.International Walls & Ceilings Inc.

    ✓ CSLB License #947700 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2010
    Phone
    (714) 412-2658

  4. 4.Enso Squared Building Solutions

    ✓ CSLB License #1102528 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2023
    Phone
    (714) 254-5117

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
Thomasville Construction Inc.#585556On file1990
A & V Contractors Inc.#845252On file2004
International Walls & Ceilings Inc.#947700On file2010
Enso Squared Building Solutions#1102528Exempt or none on file2023

Orange County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 90 active C-2 insulation and acoustical licenses in Orange County, 4 of them registered in Fullerton. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fullerton license has been held 16 years, and the longest-standing one dates to 1990. California law requires workers' compensation cover for C-2 licensees, so it is a legal baseline rather than a way to tell two contractors apart: 3 of Fullerton's 4 licenses (75.0%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 90 of the county's 90 licenses carry the same $25,000 bond California sets by statute. 4 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.

Insulation Contractors in Fullerton: common questions

How many licensed insulation contractors are there in Fullerton?

4 active C-2 insulation and acoustical licenses are registered in Fullerton, out of 90 across Orange County. 4 Fullerton-registered companies passed our license verification, and all 4 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license insulation contractors?

Yes. California licenses contractors by classification, and C-2 is the CSLB classification that authorises this work. 4 active C-2 insulation and acoustical licenses are registered in Fullerton and 90 across Orange County, the longest-standing issued in 1990. Only CLEAR, unexpired licenses appear here.

How do I check an insulation 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 California requires of C-2 licensees and 3 of Fullerton's 4 currently carry. 4 Orange County licenses expire within 90 days.

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