Key Takeaways
- Search tool: Business Database Search, free, run by the Colorado Secretary of State
- Search by business name, trademark, trade name, entity id number, document number
- Name reservation available for $25 (120 days)
- Colorado does not require LLC members/owners to be listed in the public record
- New LLC names must include a designator such as "limited liability company," "ltd. liability company," "limited liability co.," "ltd. liability co.," "limited," "l.l.c.," "llc," or "ltd."
- Same-day name-availability confirmation and formation filing available through LLC Attorney at no markup on state fees
Searching Colorado's Business Database is refreshingly generous compared to most states — the Secretary of State runs a dedicated Name Availability Search alongside the general lookup, and Colorado issues a free, instant Certificate of Good Standing online, the cheapest in the country.
This guide covers exactly how to search for a Colorado business or check LLC name availability in 2026 — the Business Database and Name Availability Search tools, Colorado's distinguishability standard, name reservation, trade name registration, and what a search actually reveals about an existing company.
How to Search for a Business in Colorado
Use the Colorado Secretary of State's Business Database Search to search for an existing business or check whether a new LLC name is available. Search by business name, trademark, trade name, entity id number, document number. The search is free.
Search directly at coloradosos.gov/biz/BusinessEntityCriteriaExt.do.
Colorado explicitly disclaims that capitalization, punctuation, and spacing differences don't create distinguishability — "ABC Inc," "A.B.C. Inc," and "ABC, Inc" are all treated as the same name — so search the plainest version of your name rather than the exact punctuation you're picturing on your logo. Use the dedicated Name Availability Search (a separate tool from the general Business Database Search) when you specifically want a yes/no availability read rather than a general lookup.
Every result is timestamped with a note that filings are processed through a specific date, and the Secretary of State is explicit that it "acts as a filing registry" and lacks authority to certify that a business is operating legally — the good-standing status shown reflects filing compliance only, not a legal or reputational endorsement of the business.
Checking Name Availability Before You File
Colorado runs a dedicated Name Availability Search separate from its general Business Database Search — use it specifically to confirm your desired LLC name isn't already taken or too similar to an existing registered name before filing. As in every state, true availability is only locked in at filing or through a formal reservation.
Colorado's Distinguishability Standard
C.R.S. §7-90-601 requires a name to be "distinguishable" from reserved and existing names on record. Colorado's own guidance confirms that capitalization, punctuation, and spacing differences alone don't satisfy the standard — a genuinely different word or a materially different sequence of letters is what counts.
Reserving a Name in Colorado Before You Form
Name reservation available: For $25, you can reserve your chosen name for 120 days before filing.
File the reservation online through the Secretary of State's business filing system. It holds the name for 120 days and can be renewed by filing a Statement of Renewal of Reservation of Name before it expires, also handled entirely online.
Searching for DBAs and Fictitious Names in Colorado
Colorado's trade name (DBA) is searchable in the same Business Database Search and filed online for $20. Sole proprietors and partnerships must renew annually for a smaller fee (roughly $5–10, depending on the year's fee schedule), but an LLC's or corporation's trade name doesn't require renewal at all as long as the underlying entity stays in good standing — a meaningfully lighter ongoing burden than most states place on business entities.
Colorado LLC Naming Requirements
Your new LLC's name must include a designator such as "limited liability company," "ltd. liability company," "limited liability co.," "ltd. liability co.," "limited," "l.l.c.," "llc," or "ltd.".
As in most states, terms implying banking, government affiliation, or misleading representations about the business's purpose are restricted and generally require additional documentation or regulatory approval before the Secretary of State will accept the filing — confirm the current specific list at the time you file, since it's adjusted periodically.
An Available LLC Name Isn't the Same as a Trademark-Safe Name
Yes — a Statement of Registration of Trademark is filed with the Secretary of State, but unlike some states, Colorado requires prior actual use in commerce before you can register. The registration is valid for 5 years and renewable for successive 5-year terms, providing state-only protection.
Colorado's Business Database Search does let you search trademarks and trade names alongside entity names, but it only checks Colorado-registered marks — not the USPTO's federal database. Search the USPTO's Trademark Electronic Search System (TESS) separately before committing to a name, since Colorado registration alone provides no protection against a federal trademark holder in another state.
What a Colorado Business Search Reveals
Colorado's Articles of Organization only require the name of the person forming the entity and the registered agent — not a full member or manager list — and the Periodic Report primarily updates the principal office address and registered agent information rather than refreshing an ownership disclosure. That makes Colorado one of the more privacy-friendly states in this guide relative to states like Alaska or Arizona that mandate member/manager listing.
Colorado does not require LLC members/owners to be listed in the public record, so a standard search will not reveal ownership information.
Getting a Colorado Certificate of Good Standing
You can confirm an LLC's good standing status and request a Certificate of Good Standing through the same Business Database Search, for Free online; $5 by mail (plus an optional $150 expedite fee) (instant online delivery if the entity is in good standing).
How to Search and Reserve Your Colorado LLC Name
If You Do It Yourself
Step 1 — Search the Business Database Search at coloradosos.gov/biz/BusinessEntityCriteriaExt.do.
Search by business name, trademark, trade name, entity id number, document number to confirm your desired name isn't already taken.
Step 2 — Apply the state's distinguishability standard, not just an exact-match check.
C.R.S. §7-90-601 requires a name to be "distinguishable" from reserved and existing names on record. Colorado's own guidance confirms that capitalization, punctuation, and spacing differences alone don't satisfy the standard — a genuinely different word or a materially different sequence of letters is what counts.
Step 3 — Check your name against restricted/regulated words.
As in most states, terms implying banking, government affiliation, or misleading representations about the business's purpose are restricted and generally require additional documentation or regulatory approval before the Secretary of State will accept the filing — confirm the current specific list at the time you file, since it's adjusted periodically.
Step 4 — Confirm your name includes a required LLC designator.
Your name must include a designator such as "limited liability company," "ltd. liability company," "limited liability co.," "ltd. liability co.," "limited," "l.l.c.," "llc," or "ltd.".
Step 5 — Reserve your name for $25 if you're not ready to file yet.
File the reservation online through the Secretary of State's business filing system. It holds the name for 120 days and can be renewed by filing a Statement of Renewal of Reservation of Name before it expires, also handled entirely online.
Step 6 — Run a separate USPTO trademark search before you commit.
Colorado's Business Database Search does let you search trademarks and trade names alongside entity names, but it only checks Colorado-registered marks — not the USPTO's federal database. Search the USPTO's Trademark Electronic Search System (TESS) separately before committing to a name, since Colorado registration alone provides no protection against a federal trademark holder in another state.
Step 7 — File your formation documents promptly once you've confirmed availability.
If you didn't reserve the name, nothing holds it for you — another filer could take it first.
Step 8 — Watch for Colorado-specific search quirks.
Colorado stands out for generosity, not complexity: the Certificate of Good Standing is completely free and delivered instantly online — the cheapest in this guide, where every other state charges at least a few dollars. Trade names attached to entities in good standing also never expire or require renewal, unlike the annual renewal sole proprietors face, and Colorado's Articles of Organization don't require a member/manager list, making it comparatively privacy-friendly.
If LLC Attorney Does It for You
- Submit your desired business name at llcattorney.com along with one or two backup options.
- LLC Attorney runs the Colorado name-availability search, checks it against restricted-word rules, and confirms your designator is correctly formatted before filing.
- Receive confirmation once your name is filed, plus access to flat-fee attorney consultations (no retainer) if a trademark conflict or distinguishability question comes up.
When Should You Talk to an Attorney About Your Colorado LLC Name?
Talk to an attorney before finalizing your Colorado LLC name if a close match appears in the trademark or trade-name portion of the Business Database Search rather than the entity-name portion, since those are governed by slightly different standards, or if member/manager privacy is a priority and you want to structure your Articles of Organization and Periodic Report filings to keep ownership information as minimal as Colorado's rules allow.
What You Actually Get With LLC Attorney's Colorado Name Search
Colorado's punctuation-blind distinguishability rule means a name that looks different on your logo can still conflict on the record. LLC Attorney checks the plain-text version of your name against Colorado's actual standard as part of every formation order, not just the styled version you have in mind.
- A Colorado name-availability search run for you before you pay any state filing fee.
- Restricted-word and distinguishability screening, so your filing isn't rejected for a naming issue you didn't know about.
- Formation starting at $49, with your confirmed name filed the same day where the state allows it.
- Access to professionally trained Business Success Advisors at no charge, plus flat-fee attorney consultations (no retainer) for trademark-conflict questions.
Colorado makes several things easier than most states — LLC Attorney makes sure your name search and filing take full advantage of that, from the free good-standing certificate to the no-renewal trade name.
Ready to Form Your Colorado LLC?
Once you've confirmed your name is available, LLC Attorney can handle the rest of your Colorado LLC formation, starting at $49. See our full pricing for all service tiers.
Frequently Asked Questions
Yes. Colorado's Business Database Search and dedicated Name Availability Search, both through the Secretary of State, are completely free with no account required.
Use Colorado's dedicated Name Availability Search to confirm your desired name isn't taken or too similar to an existing one. Remember that capitalization, punctuation, and spacing differences don't count as distinguishing under Colorado law — search the plainest version of your name.
Yes. A name reservation costs $25, lasts 120 days, and can be renewed online by filing a Statement of Renewal before it expires.
No. Colorado's Articles of Organization only require the organizer's name and the registered agent's information, and the Periodic Report doesn't mandate an ongoing member/manager disclosure — making Colorado one of the more privacy-friendly states in this guide.
Colorado offers a free, instant online Certificate of Good Standing if your entity is in good standing — the cheapest and fastest option among every state in this guide. Mail requests cost $5, with an optional $150 expedite fee.
Yes — Colorado's trade name is searchable in the same Business Database Search and costs $20 to file online. An LLC's or corporation's trade name doesn't require renewal at all as long as the entity stays in good standing; only sole proprietors and partnerships must renew annually.
Your Colorado LLC name must include "limited liability company" or an approved abbreviation like "LLC" or "Ltd." and be distinguishable from existing names — capitalization, punctuation, and spacing alone don't count as distinguishing.
No. Colorado's Business Database Search only checks Colorado-registered trademarks and trade names, not the USPTO's federal database. Search TESS separately, and note that Colorado's own trademark registration requires prior actual use in commerce before you can even register.
Yes. LLC Attorney runs a Colorado name-availability search as part of every formation order, and flags any restricted-word or distinguishability issue before you pay a filing fee.