California contractor license
SIERRA INSULATION CO INC
- C-2 Insulation And Acoustical
SIERRA INSULATION CO INC is a C-2 Insulation And Acoustical contractor in Auburn, Placer County, licensed in California for 43 years (since 1983). As of Oct 27, 2025, the license is active with an expiration date of Aug 31, 2027 on record and a license bond is on file.
SIERRA INSULATION CO INCC-2 Insulation And Acoustical · checked Oct 27, 2025
ActiveLicense number#444172
Licensed sinceAug 5, 1983
Years licensed43 years
Expiration on recordAug 31, 2027
City and countyAuburn, Placer County
License bondOn file
ProjectsNone on file
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Source: California Contractors State License Board (CSLB) and City of Los Angeles permit records. Last updated Oct 27, 2025.