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Best Licensed Insulation Contractors in Carlsbad, CA

6 insulation companies registered in Carlsbad hold current CSLB licenses, verified against official records as of August 17, 2026. All 6 are listed below, ordered by years licensed.

How we chose: We identified 6 companies registered in Carlsbad. 6 passed license verification. All 6 are listed below. 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.Seaside Specialty Construction Inc.

    ✓ CSLB License #631072 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1991
    Phone
    (760) 814-8848

  2. 2.Synergy Enterprises Inc.

    ✓ CSLB License #804759 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2002
    Phone
    (510) 825-5689

  3. 3.Energy Efficiency Ac

    ✓ CSLB License #945168 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2010
    Phone
    (510) 754-3687

  4. 4.Dempsey Construction Inc.

    ✓ CSLB License #945467 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2010
    Phone
    (760) 918-6900

  5. 5.Isc

    ✓ CSLB License #991135 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2014
    Phone
    (760) 473-8638

  6. 6.Attic Advisor

    ✓ CSLB License #1067298 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2020
    Phone
    (949) 316-8844

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
Seaside Specialty Construction Inc.#631072On file1991
Synergy Enterprises Inc.#804759On file2002
Energy Efficiency Ac#945168On file2010
Dempsey Construction Inc.#945467On file2010
Isc#991135On file2014
Attic Advisor#1067298On file2020

San Diego County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 94 active C-2 insulation and acoustical licenses in San Diego County, 8 of them registered in Carlsbad. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Carlsbad license has been held 12 years, and the longest-standing one dates to 1991. 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: 8 of Carlsbad's 8 licenses (100.0%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 94 of the county's 94 licenses carry the same $25,000 bond California sets by statute. 8 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 Carlsbad: common questions

How many licensed insulation contractors are there in Carlsbad?

8 active C-2 insulation and acoustical licenses are registered in Carlsbad, out of 94 across San Diego County. 6 Carlsbad-registered companies passed our license verification, and all 6 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. 8 active C-2 insulation and acoustical licenses are registered in Carlsbad and 94 across San Diego County, the longest-standing issued in 1991. 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 8 of Carlsbad's 8 currently carry. 8 San Diego County licenses expire within 90 days.

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