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Best Licensed Insulation Contractors in Vallejo, CA

3 insulation companies registered in Vallejo hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by years licensed.

How we chose: We identified 3 companies registered in Vallejo. 3 passed license verification. All 3 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.J B L Acoustics

    ✓ CSLB License #979514 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2012
    Phone
    (707) 731-1755

  2. 2.City Plumbing

    ✓ CSLB License #1016211 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2016
    Phone
    (707) 655-2055

  3. 3.California Quality Insulation

    ✓ CSLB License #1050955 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2019
    Phone
    (707) 805-9935

Compare the top 3 at a glance

CompanyLicenseWorkers' compLicensed since
J B L Acoustics#979514On file2012
City Plumbing#1016211Exempt or none on file2016
California Quality Insulation#1050955On file2019

Solano County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 20 active C-2 insulation and acoustical licenses in Solano County, 4 of them registered in Vallejo. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Vallejo license has been held 7 years, and the longest-standing one dates to 2012. 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 Vallejo'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: 19 of the county's 20 licenses carry the same $25,000 bond California sets by statute. 2 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 Vallejo: common questions

How many licensed insulation contractors are there in Vallejo?

4 active C-2 insulation and acoustical licenses are registered in Vallejo, out of 20 across Solano County. 3 Vallejo-registered companies passed our license verification, and all 3 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 Vallejo and 20 across Solano County, the longest-standing issued in 2012. 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 Vallejo's 4 currently carry. 2 Solano County licenses expire within 90 days.

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