Licensed insulation contractors in Winnetka, Los Angeles, CA
2 insulation contractors hold an active licence on the Contractors State License Board (CSLB) register in Winnetka, checked 4 Nov 2026: 0 licensed 10 years or more, 100% bonded and none with a complaint or board disclosure on record. Ranked by a published formula; nobody pays to move up.
- Active licences
- 2
- Median time licensed
- 1.9 yrs
- Bonded
- 100%
- Lead-Safe certified
- 0
Filled tags sit at the business's Google location; hollow tags show its mailing ZIP code only. Each tag is the theoPros score.
Ranked list
- 1
Attic Cats Inc
- Licence active
- Bonded
- Works alone
- 2
Insulation Contractors
- Licence active
- Bonded
- Works alone
Questions people ask about insulation contractors in Winnetka
How many licensed insulation contractors are in Winnetka?
2 insulation contractors hold an active Contractors State License Board (CSLB) licence with a mailing address in Winnetka, checked on 4 November 2026. 0 of them have been licensed for 10 years or more.
Does a insulation contractor need a licence in California?
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.
How do I check a insulation contractor's licence in Winnetka?
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.
Which insulation contractors rank highest in Winnetka?
By our published formula (years licensed, complaint record, bond and insurance, and Google reviews), the top three are Attic Cats Inc (39), Insulation Contractors (37). Paying or claiming a listing never changes the order.
How much do insulation contractors charge in Winnetka?
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.
Do I need a lead-safe certified insulation contractor in Winnetka?
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. 76% of homes here were built before 1980 (US Census, ACS 2024 1-year), and 0 of the 2 licensed insulation contractors listed are certified.