Details for Notice to Contractors Washington State Law (RCW 18.27.100) requires that
Notice to Contractors Washington State Law (RCW 18.27.100) requires that all advertisements for construction related services include the contractors current Department of Labor and Industries registration number in the advertisement. Failure to obtain a certificate of registration from L & I or show the registration number in all advertising will result in a fine up to $5,000 against the unregistered contractor. For more information, call Labor and Industries Specialty Compliance Service Division at 1-800-647-0982 or check L&I's internet site at www.wa.gov/lni Businesses & services mandated to have a contractor's license number (or provide said service) shall include the number within their advertisement.
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