Serve legal documents anywhere in Washington State with confidence. Served 123 LLC coordinates sheriffs and RCW 18.180-registered private process servers across all 39 Washington counties — from Seattle and Tacoma through Spokane, Vancouver, Olympia, and Bellingham, across the Cascades, Olympic Peninsula, Columbia Basin, and Palouse — delivering same-day service and returns that hold up in any Washington Superior or District Court.
Under RCW 4.28.080 and CR 4(c), service of process in Washington may be made by the sheriff of the county where service is effected, a deputy sheriff, or any person over 18 years of age who is competent to be a witness in the action and who is not a party. Washington also operates a process server registration program under RCW 18.180, administered at the county level — private process servers must be registered with the county in which they routinely serve, with bond and annual renewal requirements. Using an unregistered private server where registration is required invites motions to quash. Served 123 LLC uses only RCW 18.180-registered servers with active credentials.
Manner of personal service on individuals is governed by RCW 4.28.080: personal delivery (subsections 1-14 for specific defendants), and substituted service under RCW 4.28.080(15) — leaving a copy at the usual place of abode with a person of suitable age and discretion then resident therein. Washington does not require a family relationship — any suitable-age resident qualifies. Service on corporations is under RCW 4.28.080(9). Service by publication under RCW 4.28.100 requires a court order. Long-arm jurisdiction uses RCW 4.28.185. Return of service is governed by CR 4(g).
Washington's 39 counties concentrate population along the I-5 corridor west of the Cascades. King, Pierce, Snohomish, Thurston, and Clark counties contain roughly two-thirds of the state. Outside the I-5 corridor, Spokane anchors the east, and the state fans out across the Olympic Peninsula, Columbia Basin agricultural counties, and Palouse wheat country. For rural Eastern Washington service — Lincoln, Adams, Ferry, Columbia, Garfield counties — in-region servers with active county registration are essential because travel from Seattle or Spokane burns a full day. Served 123 LLC routes regionally and maintains active registrations statewide.
Washington sheriff or RCW 18.180-registered private server · Registration number endorsed on every private-server affidavit · Up to three diligent attempts · GPS-timestamped verification · Return of Service compliant with CR 4(g) · Substituted-service documentation under RCW 4.28.080(15) · Skip tracing at no additional charge · Court e-filing coordination on request.
Within those 39 counties, we routinely serve in Washington's largest cities and legal markets:
What to include: recipient name, service address (WA county matters for RCW 18.180 registration routing), document type, and deadline. Most requests are priced and confirmed within 5–10 minutes during business hours.
Start Your Washington Quote →Same-day service in Seattle, Tacoma, Spokane, Vancouver, and Olympia. Sheriff and RCW 18.180-registered private servers with active county-level registrations across all 39 WA counties — no unregistered servers that risk motions to quash. Court-ready returns, every time.