Serving legal papers on a business is not the same as serving an individual. You cannot simply walk up to a store, hand the documents to whoever is standing at the counter, and call it done. Companies are legal entities, and the law lays out specific rules about who can accept service on a business's behalf and where that service must take place.

Get it right, and your lawsuit moves forward on solid ground. Get it wrong, and the business can ask the court to throw out the service entirely — forcing you to start over and potentially blowing past important deadlines. This guide walks you through exactly how to serve a business with legal papers in California, including the differences between LLCs, corporations, and sole proprietorships, how registered agents work, and the mistakes that derail otherwise valid cases.

Why Serving a Business Is Different

A business is what the law calls a "legal entity." A corporation or LLC can sue and be sued in its own name, own property, and enter contracts — but it cannot literally accept a stack of papers, because it is not a person. Instead, the law designates certain human beings who are authorized to receive legal documents on the company's behalf.

This is the single most important concept in serving a business: you are not serving "the company" in the abstract. You are serving a specific, legally authorized person who represents the company. Hand the papers to the wrong person, and service may be invalid even if the company clearly knows about the lawsuit.

The type of business entity determines who that authorized person is. Serving an LLC follows different rules than serving a corporation, which differs again from serving a sole proprietor. We will cover each below.

The Registered Agent: Your First and Best Option

Most formal business entities in California — corporations, LLCs, and limited partnerships — are required to designate a registered agent for service of process (also called an "agent for service of process"). This is a person or company officially appointed to receive legal documents on the business's behalf.

The registered agent is your cleanest path to valid service. Because the agent is specifically authorized by law to accept service, handing the papers to them is virtually impossible to challenge. There is no argument about whether the recipient had authority — that is the agent's entire job.

How to Find a Business's Registered Agent

In California, the registered agent is a matter of public record. You can look it up for free through the California Secretary of State's business search at bizfileonline.sos.ca.gov. Search the business name, open the entity's record, and you will find the name and address of its registered agent for service of process.

The agent may be:

If you are dealing with skip tracing or locating a hard-to-find party, the same public records can help. For more on tracking down individuals and businesses, see our guide on how to find someone for service of process.

Serving a Corporate Registered Agent Like CT Corporation

Large national companies frequently designate a professional registered agent like CT Corporation. These firms maintain staffed offices specifically to accept service of process during business hours. A process server simply visits the listed office address, hands the documents to the intake clerk, and the firm logs the service and forwards the papers to the business.

This is one of the most reliable forms of business service precisely because the agent is set up to be served. There are no evasion games and no question about authority.

Always Check the Secretary of State First

Before sending a server to a company's storefront, look up its registered agent on the California Secretary of State website. Serving the registered agent is the most defensible method and often the fastest. A professional process server will do this research as a matter of course.

Serving a Corporation

Under California Code of Civil Procedure section 416.10, a corporation may be served by delivering the documents to any of the following:

In practice, the registered agent is almost always the preferred target. But if the agent cannot be located — for example, the listed address is vacant or outdated — California law (CCP 415.20) allows substitute service or, in limited circumstances, service through the Secretary of State itself after a court order. The rules around substituted service are technical; you can read more in our overview of substitute service of process.

Serving an LLC (Limited Liability Company)

LLCs are governed by CCP section 416.10 as well, and the rules closely mirror those for corporations. A limited liability company may be served by delivering the papers to:

As with corporations, the registered agent listed on the Secretary of State record is the safest and most defensible person to serve. Serving a random employee at an LLC's office — someone with no management authority — is a common mistake that can lead to invalid service.

Serving a Sole Proprietorship

A sole proprietorship is fundamentally different from a corporation or LLC. Legally, there is no separate entity — the business and the owner are the same. A sole proprietor who runs "Joe's Plumbing" is personally responsible for the business's debts and legal obligations.

Because of this, you generally serve a sole proprietor the same way you would serve any individual: by personally serving the owner. The business may operate under a fictitious business name (DBA), but the lawsuit and the service are directed at the human owner. You would typically name the defendant as "Joe Smith, an individual doing business as Joe's Plumbing."

This means the standard rules of personal and substitute service for individuals apply. If the owner is dodging service at the storefront, the same diligence and substitute-service rules come into play. For background on serving people at their place of work, see our guide on how to serve someone at work.

Serving a Partnership

General and limited partnerships have their own rules under CCP 416.40. A partnership may be served by delivering the documents to a general partner, the general manager of the partnership, or a designated agent for service of process. Limited partnerships are also required to register with the Secretary of State, so their agent information is publicly searchable just like corporations and LLCs.

What If the Business Has No Registered Agent on File?

Sometimes a business has let its registration lapse, never properly designated an agent, or the listed agent has resigned or moved. This is more common than people expect, especially with smaller or troubled companies.

When the registered agent cannot be served, California provides fallback options:

Each of these fallback methods requires careful documentation of your attempts. Courts will not approve alternative service unless you can show genuine diligence in trying to reach the registered agent first.

Step-by-Step: How to Serve a Business Correctly

  1. Identify the exact legal entity. Confirm whether you are dealing with a corporation, LLC, partnership, or sole proprietorship. The entity type controls who can be served. Check the Secretary of State record for the precise legal name.
  2. Look up the registered agent. Use the California Secretary of State business search to find the agent's name and current address.
  3. Confirm the address is current. Registered agent addresses can go stale. A quick verification before sending a server saves wasted trips.
  4. Serve the agent or an authorized officer. Deliver the documents to the registered agent, or to an officer/manager authorized to accept service.
  5. Document the service. The server records the date, time, location, and the name and title of the person served, then completes a proof of service. Learn more about this critical document in our guide to proof of service.
  6. File the proof of service with the court. This is what officially establishes that the business was served.

Common Mistakes When Serving a Business

1. Serving the Wrong Person

Handing papers to a cashier, receptionist, or random employee who has no authority to accept service is the most frequent error. Unless that person is the registered agent, an officer, or someone "apparently in charge" under the substitute-service rules, the service may not hold up.

2. Using an Outdated Agent Address

Businesses move, and agents resign. Serving at an address that no longer houses the agent wastes time and may invalidate service. Always verify the current address.

3. Confusing the DBA with the Legal Entity

A fictitious business name (DBA) is not a legal entity you can sue on its own. You must identify and name the actual corporation, LLC, or individual behind the DBA. Suing or serving only the trade name can sink your case.

4. Skipping the Secretary of State Lookup

Going straight to the storefront without checking the registered agent record often leads to messy, challengeable service. The public record exists to make business service clean — use it.

5. Incomplete Proof of Service

Failing to record the name and title of the person served, or failing to file the proof of service properly, gives the business grounds to challenge. Accurate documentation is non-negotiable.

The goal of serving a business is the same as serving an individual: giving the entity fair, legally adequate notice of the case against it. The law just channels that notice through specific authorized people instead of an abstract "company."

Why Use a Professional Process Server for Business Service

Serving a business correctly requires knowing the entity type, locating the right authorized person, verifying addresses, and documenting everything to court standards. A professional process server handles all of this routinely. At Famous Legal Services, we:

If you need to serve a corporation, LLC, partnership, or sole proprietor anywhere in California or nationwide, we can help you do it right the first time. Explore our full range of process serving services or learn the broader rules in our guide to process server rules in California.

Final Thoughts

Serving a business with legal papers comes down to one key question: who is legally authorized to accept service for this entity? Answer that correctly — usually by serving the registered agent listed with the Secretary of State — and your service will stand up in court. Skip the research or hand papers to the wrong person, and you risk having your case delayed or dismissed.

When real money and real deadlines are on the line, professional service is worth it. Place your order online or call us at (888) 335-3318, and we will make sure your business defendant is served properly and on time.

Experiencing phone issues? Call us directly at (818) 371-2544