Homversa

Best Licensed Insulation Contractors in Rohnert Park, CA

Homversa lists 3 insulation companies registered in Rohnert Park holding current CSLB licenses, matched against the CSLB licensee file as of . All 3 are listed below, ordered by years licensed.

How we chose: We identified 3 insulation companies registered in Rohnert Park. Every one of them holds a current license, checked against the official register. 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.Division 9 Specialty

    ✓ CSLB License #1003305 - look up this number at CSLB (opens in a new window)

    On the CSLB register since 2015, with workers' compensation cover on file and bonded at $25,000.

    Verified
    Registered in
    Rohnert Park, CA 94928
    Licensed since
    Phone
    (707) 303-6199

  2. 2.K M Insulation

    ✓ CSLB License #1057770 - look up this number at CSLB (opens in a new window)

    On the CSLB register since 2019, with bonded at $25,000.

    Verified
    Registered in
    Rohnert Park, CA 94927
    Licensed since
    Phone
    (707) 292-6409

  3. 3.Sound Management Group Limited Liability Company

    ✓ CSLB License #1080714 - look up this number at CSLB (opens in a new window)

    On the CSLB register since 2021, with workers' compensation cover on file and bonded at $25,000.

    Verified
    Registered in
    Rohnert Park, CA 92928
    Licensed since
    Phone
    (908) 295-9027

Compare the top 3 at a glance

Swipe the table sideways for all columns - the company name stays put.

Compare the top 3 Licensed Insulation Contractors in Rohnert Park, CA
Insulation ContractorLicenseWorkers' compLicensed since
Division 9 Specialty#1003305On file2015
K M Insulation#1057770Exempt or none on file2019
Sound Management Group Limited Liability Company#1080714On file2021

How this page is built

Nobody pays to appear on this page, and position cannot be bought. A company is listed only where the official register showed it holding a current license when we checked on September 4, 2026.

  • Ranked by years licensed.
  • Left off anything expired on the date we checked, or carrying any status other than current.
  • Not published at all until at least 3 insulation companies pass that check. At most 10 appear - a cut through the ranking, not a further test.

The full method, including what each register does and does not publish.

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: 37 active C-2 insulation and acoustical licenses in Sonoma County, 3 of them registered in Rohnert Park. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Rohnert Park license has been held 6 years, and the longest-standing one dates to 2015. 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: 2 of Rohnert Park's 3 licenses (66.7%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 37 of the county's 37 licenses carry the same $25,000 bond California sets by statute. 0 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 Rohnert Park: common questions

How many licensed insulation contractors are there in Rohnert Park?

3 active C-2 insulation and acoustical licenses are registered in Rohnert Park, out of 37 across Sonoma County. 3 Rohnert Park-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. 3 active C-2 insulation and acoustical licenses are registered in Rohnert Park and 37 across Sonoma County, the longest-standing issued in 2015. 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 2 of Rohnert Park's 3 currently carry. 0 Sonoma County licenses expire within 90 days.

Why is a company not on this list?

A company appears only when we can match it to a current record in the register this page is verified against - 3 companies passed that match for Rohnert Park. A credential that is expired or suspended, or a business we cannot conclusively match to a current record, never appears. A listed business that believes its information is wrong can reach us through the contact and corrections page at homversa.com/contact. How current each date is, and what happens when a credential lapses, are explained on our methodology page.

Which nearby cities have verified insulation contractors?

Santa Rosa (18 verified), Sebastopol (3 verified), Petaluma (4 verified), Novato (5 verified) and San Rafael (4 verified) each publish their own list, verified separately against the state register, so the counts differ city by city. The links are in the nearby-cities section below.

Other services in Rohnert Park

All 21 trades in Rohnert Park

Insulation Contractors in nearby cities

Deepest nearby market: Santa Rosa ranks 10 insulation companies for this trade within the same area.

All insulation contractors in California

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