Licensed insulation contractors in Wilmington, Los Angeles, CA

2 insulation contractors hold an active Contractors State License Board (CSLB) licence with a mailing address in Wilmington, checked on 4 November 2026. 1 of them have been licensed for 10 years or more.

Yes, when the whole job, labour and materials, costs $1,000 or more or needs a permit. Below that, California's minor-work exemption (B&P Code 7048) applies, but only if they work alone. Look for an active C-2 licence.

Ask for the licence number and look it up on the CSLB website, or search this page. Every insulation contractor listed here was matched to an active licence on the CSLB register.

By our published formula (years licensed, complaint record, bond and insurance, and Google reviews), the top three are Arctic Insulation Inc (86), Bartkowski Firestop Installation (62). Paying or claiming a listing never changes the order.

Insulation contractors in the Los Angeles-Long Beach-Anaheim metro earn a median $23.30 an hour (BLS, May 2025); contractors typically bill about twice the wage to cover insurance, overhead and profit.

If your home was built before 1978 and the work disturbs paint, yes: the law requires a firm certified lead-safe by the US Environmental Protection Agency. 64% of homes here were built before 1980 (US Census, ACS 2024 1-year), and 0 of the 2 licensed insulation contractors listed are certified.