Need a Plumbing Contract in Washington? AroundWire Can Help

In Washington State, plumbing service contracts—whether for public or private projects—commonly specify that all work must comply with the Washington State Plumbing Code and relevant local ordinances. Contractors are required to hold an active Washington State contractor license with a plumbing specialty, and individual plumbers must be certified by the Washington State Department of Labor & Industries (L&I). Contracts typically mandate proof of general liability insurance and workers’ compensation coverage, with public agencies often requiring performance and payment bonds. Prevailing wage rules under RCW 39.12 apply to public works projects, necessitating accurate wage documentation and certified payrolls. Payment terms usually stipulate net 30 days, though retainage of up to 5% is standard on public contracts until project completion and acceptance. Contracts may include detailed scope-of-work definitions, clear change order procedures, and liquidated damages clauses for delays. Dispute resolution in Washington frequently favors mediation or arbitration before litigation. Risk factors include strict compliance with permitting and inspection requirements, as L&I enforces penalties for unlicensed work or code violations. Additionally, contracts often require adherence to safety standards per WAC 296-155. It is common for contracts to reference local jurisdictional requirements, especially in larger cities with their own permitting processes. Overall, plumbing contracts in Washington emphasize regulatory compliance, robust insurance, and clear mechanisms for change management and dispute resolution.