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Corporate & Entity ServiceRCW 23.95.450RCW 4.28.080(9)RCW 4.28.080(10)RCW 48.05.200

How to Serve an LLC, Corporation, or Registered Agent in Washington

Complete statutory guide to serving Washington LLCs, domestic and foreign corporations, commercial registered agents (CT Corp, CSC, Northwest, RAI), and substituted service via the WA Secretary of State.

Key Statutory Takeaways for Washington Litigants

  • Under the Washington Uniform Business Organizations Code (RCW 23.95.450) and RCW 4.28.080(9), the primary method for serving any domestic or registered foreign LLC, corporation, or limited partnership is personal delivery to its designated Registered Agent.
  • Washington's commercial registered agent ecosystem is concentrated in two main corridors: the Olympia/Tumwater capital corridor (C T Corporation System and Corporation Service Company) and downtown Spokane (Northwest Registered Agent, Inc. and Registered Agents Inc. — which are two separate companies at separate addresses).
  • Under RCW 4.28.080(9), you may also serve a domestic company by delivering process to its president, other head of the company, corporate secretary, cashier, or managing agent.
  • If an entity fails to maintain a registered agent or the agent cannot with reasonable diligence be found at the registered office, RCW 23.95.450 permits alternative methods, including substituted service through the Washington Secretary of State at the Dolliver Building in Olympia where authorized by statute.

Primary Corporate Service Rules: RCW 23.95.450 & RCW 4.28.080(9)–(10)

When suing or subpoenaing a business entity in Washington—whether a Limited Liability Company (RCW 25.15), a Profit Corporation (RCW 23B), a Nonprofit Corporation (RCW 24.03A), or a Limited Partnership—service of process is governed by two interlocking statutes: the Uniform Business Organizations Code (RCW 23.95.450) and the general civil summons statute (RCW 4.28.080(9) and (10)).

Under RCW 23.95.450(1), a represented entity (any domestic entity or registered foreign entity) may be served with any process, notice, or demand required or permitted by law by serving its registered agent. Additionally, RCW 4.28.080(9) authorizes serving a domestic corporation or company by delivering a copy of the summons to the president or other head of the company or corporation, the registered agent, the corporate secretary, the cashier, or the managing agent thereof (or to the secretary, stenographer, or office assistant of any of those specific officers).

How to Look Up a Washington Registered Agent via the SOS CCFS Portal

Before dispatching a process server to a storefront or warehouse, always verify the entity's exact legal name, UBI (Unified Business Identifier) number, and designated Registered Agent on the Washington Secretary of State's Corporations and Charities Filing System (CCFS). Why? Because serving a frontline retail cashier, shift supervisor, or receptionist who is not an officer, managing agent, or personal assistant to an officer can lead to a motion to quash service under RCW 4.28.080(9).

On the CCFS portal, check the "Registered Agent Information" block. It will list both the Registered Agent's name and their physical Street Address in Washington (where personal hand-delivery must occur). Note that Washington distinguishes between Commercial Registered Agents (who register their standard intake address with the Secretary of State under RCW 23.95.420) and Noncommercial Registered Agents (often an individual LLC member, founder, or local law firm).

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Major Commercial Registered Agent Hubs in Olympia, Tumwater, Fife & Spokane

Our process servers make daily runs to every major commercial registered agent intake counter in Washington State. The five highest-volume commercial registered agent hubs in Washington are:

1. C T Corporation System (CT Corp) / National Registered Agents, Inc. (NRAI): Located at 711 Capitol Way South, Suite 204, Olympia, WA 98501 (Thurston County). Accepts service for thousands of Fortune 500 corporations, banks, and national retailers.

2. Corporation Service Company (CSC): Located at 300 Deschutes Way SW, Suite 208 (also Suite 304), Tumwater, WA 98501 (Thurston County). Serves as statutory registered agent for Amazon.com, Inc., Microsoft Corporation, and thousands of enterprise entities.

3. Northwest Registered Agent, Inc. (National Headquarters): Located at 522 West Riverside Avenue, Suite N, Spokane, WA 99201 (Spokane County). Important: Northwest Registered Agent is a completely separate company from Registered Agents Inc., with its own standalone intake counter on West Riverside Avenue.

4. Registered Agents Inc. (RAI): Located at 100 North Howard Street, Suite R, Spokane, WA 99201 (Spokane County). Separate commercial registered agent entity from Northwest Registered Agent.

5. InCorp Services, Inc.: Located at 4505 Pacific Highway East, Suite C-2, Fife, WA 98424 (Pierce County).

What If the Registered Agent Cannot Be Found? (RCW 23.95.450 & SOS Service)

Small single-member LLCs and defunct contractors frequently list a residential home, a vacated office suite, or a UPS Store mailbox as their registered office on the Secretary of State's registry. What happens when our server arrives and the registered agent has moved or cannot with reasonable diligence be found at the registered office?

Under RCW 23.95.450(2) and (3), if an entity ceases to have a registered agent, or if its registered agent cannot with reasonable diligence be served, the entity may be served by registered or certified mail (return receipt requested) or commercial delivery service addressed to the entity's governors at its principal office shown in its most recent annual report, OR by handing process to an officer, managing agent, or governor directly, OR—where authorized by specific Washington statutes—by serving the Washington Secretary of State's Corporations Division walk-in counter at the Dolliver Building (801 Capitol Way South, Olympia, WA 98501) along with a Declaration of Due Diligence and the statutory SOS fee.

Frequently Asked Questions: Serving LLCs, Corporations & Agents

Are Northwest Registered Agent and Registered Agents Inc. in Spokane the same office?

No! They are two separate companies at two different downtown Spokane buildings. Northwest Registered Agent, Inc. is located at 522 W. Riverside Ave, Suite N, Spokane, WA 99201, while Registered Agents Inc. (RAI) is located at 100 N. Howard St, Suite R, Spokane, WA 99201. Always verify which specific entity is named on the WA SOS CCFS filing.

How do I serve an out-of-state insurance company in Washington?

Under RCW 48.05.200, authorized foreign and alien insurance companies doing business in Washington must appoint the Washington State Insurance Commissioner as their statutory attorney to receive service of legal process. Service is made on the Office of the Insurance Commissioner (OIC) at 5000 Capitol Blvd SE, Tumwater, WA 98501.

Can I serve a corporation by handing papers to any employee at a branch store?

Generally no. Under RCW 4.28.080(9), Washington courts hold that delivery to a lower-level employee who is not an officer, managing agent, registered agent, or the personal secretary/office assistant to one of those officers is insufficient to establish personal jurisdiction over a domestic corporation.

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