Costco Wholesale Corporation
Licensed Plumbing Contractor · Seattle, Washington
Is this you? Claim it free →● WA Licence #COSTCWC770K6
- Address
- Po Box 35005, Attn: Licensing, Seattle, WA 98124
- Phone
- (425) 313-8100
- Website
- Not listed yet
- Licence type
- Plumbing Contractor
- Licence status
- Active
- Expires
- 06/05/2027
Source: Washington State Department of Labor & Industries (L&I) — Contractor License Data (data.wa.gov) · checked 2026-07-02
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