Licensed insulation contractors in Seattle, WA
2 insulation contractors hold an active licence on the Washington State Department of Labor & Industries (L&I) register in Seattle, checked 4 Nov 2026: 2 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
- 17.1 yrs
- Bonded
- 100%
- Lead-Safe certified
- 0
- Google reviews
- 141
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
Am/pm Exterminators LLC
- Licence active
- Bonded $15,000
- No complaints
- 2
Hhl Insulation
- Licence active
- Bonded $30,000
- No complaints
Questions people ask about insulation contractors in Seattle
How many licensed insulation contractors are in Seattle?
2 insulation contractors hold an active Washington State Department of Labor & Industries (L&I) licence with a mailing address in Seattle, checked on 4 November 2026. 2 of them have been licensed for 10 years or more.
Does a insulation contractor need a licence in Washington?
Yes, when the whole job, labour and materials, costs $500 or more, is part of a bigger project, or they advertise as a contractor (RCW 18.27.090). Electrical and plumbing contractors need an L&I licence for any job, whatever its size (RCW 19.28.041, RCW 18.106.020). Look for an active CCSO licence.
How do I check a insulation contractor's licence in Seattle?
Ask for the licence number and look it up on the Washington L&I website, or search this page. Every insulation contractor listed here was matched to an active licence on the Washington L&I register.
Which insulation contractors rank highest in Seattle?
By our published formula (years licensed, complaint record, bond and insurance, and Google reviews), the top three are Am/pm Exterminators LLC (86), Hhl Insulation (65). Paying or claiming a listing never changes the order.
How much do insulation contractors charge in Seattle?
Insulation contractors in the Seattle-Tacoma-Bellevue metro earn a median $34.61 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 Seattle?
If your home was built before 1978 and the work disturbs paint, yes: the law requires a firm certified lead-safe by the Washington State Department of Commerce. 50% of homes here were built before 1980 (US Census, ACS 2024 1-year), and 0 of the 2 licensed insulation contractors listed are certified.