California LLC Name Search (2026): Rules, Restricted Words & How to Check

Q: What words must a California LLC name include?

Your name must contain "Limited Liability Company," "LLC," or "L.L.C." You're allowed to abbreviate "Limited" to "Ltd." and "Company" to "Co." — so "Sunset Ltd. Liability Co." is also valid, though "LLC" is by far the most common ending.

Q: How do I check if my California LLC name is available?

Use the California Secretary of State's free Business Search on the bizfile portal. Search your exact name plus variations and plurals. Remember that the state has final say — availability in the search is a strong signal but isn't a guarantee until your filing is approved.

Q: What words are restricted in a California LLC name?

An LLC name can't include words like bank, trust, trustee, incorporated, corporation, corp., inc., insurer, or insurance company, because they imply a different entity type or regulated activity. Words suggesting a government agency are also off-limits. These either require special approval or are prohibited entirely.

Q: How much does it cost to reserve a name in California?

A name reservation costs $10 and holds your name for 60 days via a Name Reservation Request. It's optional — if you're ready to file your Articles of Organization right away, you can skip the reservation and simply file.

California's LLC Naming Rules

California's naming requirements come down to three things: the right designator, distinguishability, and avoiding restricted words. Get all three right and your Articles of Organization won't get bounced.

Include a designator: "Limited Liability Company," "LLC," or "L.L.C." You may abbreviate "Limited" to "Ltd." and "Company" to "Co."
Be distinguishable from every existing California entity name of the same type, in the Secretary of State's records.
Don't mislead the public — no words implying you're a different entity type or a government agency.

Restricted & prohibited words

An LLC name cannot contain words that make it look like a corporation, a bank, or an insurer. These typically require special approval or are off-limits:

banktrusttrusteeincorporatedcorporationcorp.inc.insurerinsurance company

California Name Compliance Checker

Type your proposed name to instantly check the designator and scan for restricted words. Then run the official availability search to confirm it's not already taken:

Name Compliance Checker

Checks designator + restricted words (not availability)

This checks formatting and restricted words only. It does NOT confirm the name is available — always run the official Secretary of State business search before filing. Not legal advice.

Small spelling or formatting differences may not meet the Secretary of State’s distinguishability standard. Apply the current LLC naming regulations and await the filing decision; this formatting tool does not search the official database or clear a trademark.

How to Search & Reserve Your Name

Search bizfile: use the Secretary of State's free Business Search and try variations, misspellings, and plurals.
Check trademarks: run a quick USPTO search — a name can be free in California but federally trademarked.
Reserve if needed ($10): not ready to file? Hold your name for 60 days with a Name Reservation Request. Skip it if you're filing right away.
Grab the domain and social handles while you're at it, so your brand is consistent.

Search Names on bizfile

Ahmad Adil's Take: Don't fall in love with a name before you search it — that's the mistake I see most. Pick two or three options, run them all through bizfile, and check the .com and trademark database before you commit. In my experience, most first-choice names are already taken in California, so having backups saves you a rejected filing and the wait that comes with it. And unless you genuinely need to lock a name weeks ahead, skip the $10 reservation and just file when you're ready.

Optional Formation Service

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Search, optional reservation and final review

California evaluates a proposed LLC name against existing and reserved LLC names under its current distinguishability rules. The search is preliminary; the Secretary of State makes the filing decision. Trademark rights and regulated-word restrictions require separate review. Optional name reservation costs $10 and lasts 60 days.

Official requirements and instructions

Frequently Asked Questions

California LLC Name — FAQ

What words must a California LLC name include?

Your name must contain "Limited Liability Company," "LLC," or "L.L.C." You're allowed to abbreviate "Limited" to "Ltd." and "Company" to "Co." — so "Sunset Ltd. Liability Co." is also valid, though "LLC" is by far the most common ending.

How do I check if my California LLC name is available?

Use the California Secretary of State's free Business Search on the bizfile portal. Search your exact name plus variations and plurals. Remember that the state has final say — availability in the search is a strong signal but isn't a guarantee until your filing is approved.

What words are restricted in a California LLC name?

An LLC name can't include words like bank, trust, trustee, incorporated, corporation, corp., inc., insurer, or insurance company, because they imply a different entity type or regulated activity. Words suggesting a government agency are also off-limits. These either require special approval or are prohibited entirely.

How much does it cost to reserve a name in California?

A name reservation costs $10 and holds your name for 60 days via a Name Reservation Request. It's optional — if you're ready to file your Articles of Organization right away, you can skip the reservation and simply file.

What makes two California names "distinguishable"?

A cosmetic change may be insufficient under California’s LLC naming regulations. Compare proposed names using the official search and current rules; the Secretary of State makes the final decision.

Can I use a DBA (fictitious business name) in California?

Yes. If you want to operate under a different brand than your LLC's legal name, you can file a Fictitious Business Name (DBA) with the county where your business is located. The DBA doesn't replace your LLC name — it's an additional public name your LLC is allowed to use.

Does a name search guarantee trademark protection?

No. A preliminary California LLC-name search does not establish trademark rights or guarantee filing acceptance. Check federal and relevant state trademark records and obtain advice for conflicts.

About the Author

Ahmad Adil

Ahmad Adil is the founder and CEO of LLC School. The naming rules here — the required LLC designator, the distinguishability standard, the restricted-word list, and the $10 / 60-day name reservation — were verified against the California Secretary of State's business-entity name regulations (Corp. Code §17701.08). LLC School updates its California guides as the rules change.

About Ahmad Adil → California LLC Overview →

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