Mountain Insulation, C-2 Insulation and Acoustical Contractor in Grass Valley, CA
Mountain Insulation operating as a sole owner holds an active California contractor license (CSLB #1137068), valid through May 31, 2027. First issued in 2025, the license has been on the CSLB roster for 1 year. It carries a single CSLB classification: C-2 — Insulation and Acoustical Contractor. Records show an active surety bond on file with Jet Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Grass Valley, in Nevada County, California.
- License Number
- 1137068
- Issued
- May 6, 2025
- Status
- CLEAR
- Expires
- May 31, 2027
- Entity
- Sole Owner
- Surety
- Jet Insurance Company
- Bond Number
- JT030858
- Effective
- Apr 14, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Apr 17, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
- License issued less than 2 years ago
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Mountain Insulation licensed in California?
Yes. Mountain Insulation holds California Contractors State License Board license number 1137068, which is active and in good standing. The license was first issued on May 6, 2025. It is valid through May 31, 2027.
What does Mountain Insulation specialize in?
Mountain Insulation is licensed for one CSLB classification: C-2 Insulation and Acoustical Contractor.
Where is Mountain Insulation headquartered?
Mountain Insulation is headquartered at Po Box 1336, Grass Valley, CA 95945, in Nevada County, California.
Does Mountain Insulation have an active surety bond on file with CSLB?
Yes. Mountain Insulation has an active California contractor surety bond filed with Jet Insurance Company.
Does Mountain Insulation carry workers' compensation coverage?
Mountain Insulation reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Mountain Insulation's contractor license?
You can verify Mountain Insulation's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1137068.
- WC coverage startsApr 17, 2025
- License issuedMay 6, 2025
- Bond activeApr 14, 2026
- License expiresMay 31, 2027
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