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Best Licensed Insulation Contractors in Santa Rosa, CA

19 insulation companies registered in Santa Rosa hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.

How we chose: We identified 19 companies registered in Santa Rosa. 19 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.Sauls Acoustical

    ✓ CSLB License #360726 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1978
    Phone
    (707) 799-2983

  2. 2.C D M Builders Inc.

    ✓ CSLB License #401720 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1981
    Phone
    (707) 478-5793

  3. 3.All About Homes

    ✓ CSLB License #416809 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1982
    Phone
    (707) 479-6312

  4. 4.Humphrey Construction

    ✓ CSLB License #498768 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1986
    Phone
    (707) 528-7577

  5. 5.D M I

    ✓ CSLB License #533381 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1988
    Phone
    (707) 889-2649

  6. 6.Verdin Insulation Inc.

    ✓ CSLB License #645916 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1992
    Phone
    (707) 792-5930

  7. 7.Brett Moody

    ✓ CSLB License #664856 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1993
    Phone
    (661) 343-1540

  8. 8.Dana Kitchens & Associates Inc.

    ✓ CSLB License #744400 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1998
    Phone
    (707) 571-8326

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
Sauls Acoustical#360726Exempt or none on file1978
C D M Builders Inc.#401720On file1981
All About Homes#416809Exempt or none on file1982
Humphrey Construction#498768On file1986
D M I#533381Exempt or none on file1988
Verdin Insulation Inc.#645916On file1992

Sonoma County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 36 active C-2 insulation and acoustical licenses in Sonoma County, 19 of them registered in Santa Rosa. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Santa Rosa license has been held 21 years, and the longest-standing one dates to 1978. 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: 13 of Santa Rosa's 19 licenses (68.4%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 36 of the county's 36 licenses carry the same $25,000 bond California sets by statute. 1 county license reaches its 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 Santa Rosa: common questions

How many licensed insulation contractors are there in Santa Rosa?

19 active C-2 insulation and acoustical licenses are registered in Santa Rosa, out of 36 across Sonoma County. 19 Santa Rosa-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 insulation contractors?

Yes. California licenses contractors by classification, and C-2 is the CSLB classification that authorises this work. 19 active C-2 insulation and acoustical licenses are registered in Santa Rosa and 36 across Sonoma County, the longest-standing issued in 1978. 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 13 of Santa Rosa's 19 currently carry. 1 Sonoma County license expires within 90 days.

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