California Insulation Contractors
Looking for insulation contractors in California? Below are 10 top-rated insulation contractors serving California in 2026 — every one rated 4.0+ stars with 10 or more verified Google reviews. Compare ratings and review counts, then contact them directly by phone or website. No middleman, no lead fees.
Listings are sourced from public Google Business Profiles and sorted by rating. Are you a California insulation contractor? Add your business free below.
Tyson Insulation
5645 E Westover Ave #101, Fresno, CA 93727, USA
479 reviews
Reviews via Google
California Attic & Build
4901 Morena Blvd, San Diego, CA 92117, USA
150 reviews
Reviews via Google
ELM INSULATION & SOUND SOLUTIONS
12402 Killion St, Valley Village, CA 91607, USA
83 reviews
Reviews via Google
Hunter's Insulation
17614 Los Alimos St, Granada Hills, CA 91344, USA
66 reviews
Reviews via Google
Vortex Insulation
1273 Industrial Pkwy W #530, Hayward, CA 94544, USA
47 reviews
Reviews via Google
Phoenix insulation inc
1971 E Washington Ave #3, Escondido, CA 92027, USA
40 reviews
Reviews via Google
Cal Spray Foam Insulation
Bakersfield, CA 93301, USA
33 reviews
Reviews via Google
Insulation Labs
7023 Valjean Ave, Van Nuys, CA 91406, USA
415 reviews
Reviews via Google
DS Insulation Corp & Specialties
6723 32nd St F, North Highlands, CA 95660, USA
121 reviews
Reviews via Google
Everguard Home Insulation
23450 Collins St, Woodland Hills, CA 91367, USA
116 reviews
Reviews via Google
Data sourced from Google Places. Updated April 12, 2026.
Hiring an Insulation Contractor in California
Buildermuse currently lists 10 insulation contractors in California, averaging 5.0 stars across 1,550 verified Google reviews. That is an unusually strong field — when nearly every firm clears 4.8 stars, response time and availability become the real differentiators, so call two or three rather than only the top result. Most of the crews above operate out of Bakersfield, Escondido, and Fresno.
California has the largest contractor licensing system in the U.S. Unlicensed work over $500 is a misdemeanor. The CSLB actively investigates unlicensed contracting. Confirm credentials with the Contractors State License Board (CSLB) at (800) 321-2752 before work begins. Licenses renew on a two-year cycle (active license date). Expect a $450 state application fee.
Labor is the biggest line item on most bids, and the California market sets the floor: construction workers here average $42.58 an hour — about $88,556 a year — across 920,470 workers statewide, per Bureau of Labor Statistics data. That puts California among the pricier construction labor markets in the country, so expect quotes to reflect it.
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