J R Insulation, C-2 Insulation and Acoustical Contractor in Mammoth Lakes, CA
J R Insulation operating as a sole owner holds an active California contractor license (CSLB #1034117), valid through Dec 31, 2027. First issued in 2017, the license has been on the CSLB roster for 9 years. It carries a single CSLB classification: C-2 — Insulation and Acoustical Contractor. Records show an active surety bond on file with Western Surety Company and an exempt workers' compensation status (no employees on payroll). The business is based in Mammoth Lakes, in Mono County, California.
- License Number
- 1034117
- Issued
- Dec 18, 2017
- Status
- CLEAR
- Expires
- Dec 31, 2027
- Entity
- Sole Owner
- Surety
- Western Surety Company
- Bond Number
- 73757840
- Effective
- Sep 22, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Dec 10, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is J R Insulation licensed in California?
Yes. J R Insulation holds California Contractors State License Board license number 1034117, which is active and in good standing. The license was first issued on December 18, 2017. It is valid through December 31, 2027.
What does J R Insulation specialize in?
J R Insulation is licensed for one CSLB classification: C-2 Insulation and Acoustical Contractor.
Where is J R Insulation headquartered?
J R Insulation is headquartered at Po Box 75, Mammoth Lakes, CA 93546, in Mono County, California.
Does J R Insulation have an active surety bond on file with CSLB?
Yes. J R Insulation has an active California contractor surety bond filed with Western Surety Company.
Does J R Insulation carry workers' compensation coverage?
J R Insulation reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify J R Insulation's contractor license?
You can verify J R Insulation's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1034117.
- License issuedDec 18, 2017
- Bond activeSep 22, 2025
- WC coverage startsDec 10, 2025
- License expiresDec 31, 2027
Working a California job with J R Insulation, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own J R Insulation? Claim or correct this profile