Licensed window and glass contractors in Seattle, WA
14 window and glass contractors hold an active licence on the Washington State Department of Labor & Industries (L&I) register in Seattle, checked 4 Nov 2026: 9 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
- 14
- Median time licensed
- 16.2 yrs
- Bonded
- 100%
- Lead-Safe certified
- 1
- Google reviews
- 686
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
Windorco Supply Inc
- Licence active
- Bonded $15,000
- No complaints
- 2
Cascade Glass Co
- Licence active
- Bonded $15,000
- No complaints
- 3
Double Hung Window Restoration
- Licence active
- Bonded $15,000
- No complaints
- Washington Commerce Lead-Safe
- 4
R E Glaze Unlimited Inc
- Licence active
- Bonded $15,000
- No complaints
- 5
Perkins Glass & Mirror Inc
- Licence active
- Bonded $15,000
- No complaints
- 6
Smart Glass Inc
- Licence active
- Bonded $15,000
- No complaints
- 7
Emerald City Tinting & Signs I
- Licence active
- Bonded $15,000
- No complaints
- 8
Hh Seattle City Glass LLC
- Licence active
- Bonded $15,000
- No complaints
- 9
Annapurna Glass Design
- Licence active
- Bonded $15,000
- No complaints
- 10
Dehax LLC
- Licence active
- Bonded $15,000
- No complaints
- 11
Unique Art Glass LLC
- Licence active
- Bonded $15,000
- No complaints
- 12
Northwest Shower Door
- Licence active
- Bonded $15,000
- No complaints
- 13
Tam Industries Inc
- Licence active
- Bonded $15,000
- No complaints
- 14
Lebel Studios
- Licence active
- Bonded $15,000
- No complaints
Questions people ask about window and glass contractors in Seattle
How many licensed window and glass contractors are in Seattle?
14 window and glass contractors hold an active Washington State Department of Labor & Industries (L&I) licence with a mailing address in Seattle, checked on 4 November 2026. 9 of them have been licensed for 10 years or more.
Does a window and glass 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 CCBP licence.
How do I check a window and glass 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 window and glass contractor listed here was matched to an active licence on the Washington L&I register.
Which window and glass contractors rank highest in Seattle?
By our published formula (years licensed, complaint record, bond and insurance, and Google reviews), the top three are Windorco Supply Inc (99), Cascade Glass Co (93), Double Hung Window Restoration (65). Paying or claiming a listing never changes the order.
How much do window and glass contractors charge in Seattle?
Window and glass contractors in the Seattle-Tacoma-Bellevue metro earn a median $36.35 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 window and glass 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 1 of the 14 licensed window and glass contractors listed are certified.