How to Sue a Business or LLC in Colorado Small Claims Court

Why Getting the Business Name Right Matters

Suing the wrong entity is one of the most common mistakes in Colorado small claims court. If you name "Mike's Plumbing" on Form JDF 250 but the actual registered LLC is "M. Johnson Plumbing Services LLC," any judgment you win could be unenforceable. The name on your court papers must match the legal entity that owes you money.

Before filing, you need to figure out exactly what kind of business you are suing and what its legal name is.

Step 1: Identify the Business Entity Type

Colorado businesses operate under several structures, and each one gets named differently on your claim:

Sole proprietorship — an individual operating under a trade name. Sue the individual owner personally, adding the trade name: "Michael Johnson d/b/a Mike's Plumbing." This ensures the judgment attaches to the person, not just the business name.

LLC (Limited Liability Company) — a registered entity with its own legal identity. Sue the LLC under its exact registered name: "M. Johnson Plumbing Services LLC." The LLC's members are typically shielded from personal liability unless you can pierce the corporate veil, which is rare in small claims.

Corporation — similar to an LLC in that it is a separate legal entity. Sue under the registered corporate name, exactly as it appears in state records.

Partnership — you can sue the partnership by name and may also name individual partners if you know them.

Step 2: Verify the Entity at the Secretary of State

The Colorado Secretary of State maintains a free public business database at coloradosos.gov. Search for the business name and confirm:

• The exact legal name — copy it character for character, including "LLC," "Inc.," or "Corp."
• Active or inactive status — if the entity is delinquent or dissolved, confirm the proper party and service method before filing; its status alone does not establish that an owner is personally liable.
• The registered agent — every LLC and corporation in Colorado must designate a registered agent authorized to accept legal papers on the entity's behalf. The database shows the agent's name and physical address.
• Principal office address — this helps determine which county has proper venue under C.R.C.P. Rule 503.

Step 3: Serve the Registered Agent

For LLCs and corporations, service may be made on an officer, manager, or designated registered agent under C.R.C.P. Rule 304. Do not assume that handing papers to any employee at the store counter or job site is valid service.

Serving the wrong person can invalidate service and delay your case. Check the entity record and confirm the authorized recipient and service method before serving. If the registered agent is a commercial service (like "CT Corporation" or "Registered Agents Inc."), use the address listed for that agent.

Service methods are the same as for individuals: sheriff, licensed private process server, a disinterested adult over 18, or certified mail through the clerk. Service must be completed at least 15 days before the trial date under C.R.C.P. Rule 504.

When the Business Has Closed or Changed Agents

If the Secretary of State database shows the entity is delinquent or dissolved, do not assume that its owners are personally liable or that service on any owner is valid. Confirm the proper party and service method before filing. Consult the county court Self-Help Center about procedural resources, or seek legal advice if the correct party or service method is unclear.

What About Suing Both the Business and Its Owner?

You can name multiple defendants on Form JDF 250. An LLC owner is not automatically liable for the LLC's debt. If you believe the owner is personally responsible on a separate basis, such as a personal guarantee, confirm that basis before naming both "M. Johnson Plumbing Services LLC" and "Michael Johnson" individually.

At the hearing, you would need to establish the separate basis for holding the individual personally liable. Naming both parties does not itself establish liability.

At the Hearing

Business entities can appear in Colorado small claims court through an officer, manager, or designated full-time employee without hiring an attorney. Under C.R.C.P. Rule 520, attorneys are generally prohibited from participating; if a defendant files Form JDF 256 at least 7 calendar days before trial, the plaintiff is entitled to retain counsel.

If the business does not appear after valid service at least 15 days before trial, the court may enter a default judgment under C.R.C.P. Rule 515. You will still need to present evidence establishing the amount owed.

Our Colorado Small Claims Filing Guide includes an entity verification worksheet that walks you through the Secretary of State lookup, registered agent identification, and proper party naming — so your Form JDF 250 targets the right defendant from the start.

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