When people talk about a "dealer number" on a title or sale papers, they almost always mean the selling dealer's occupational license number, the number DMV assigns when it licenses a dealership. It appears on the dealer's sale paperwork, such as the Report of Sale (REG 51) a California dealer completes on every retail sale and the dealer's reassignment documents, and it ties the transaction to a licensed business. You can check any California dealer's license with DMV's Occupational License Status lookup.
Educational information only. This article is not legal advice.
In this article
Where the dealer number shows up
| Document | What it's for |
|---|---|
| Report of Sale (REG 51) | Required for every retail sale by a licensed California dealer; reports the sale to DMV |
| Dealer reassignment and transfer documents | Show the vehicle passed through a licensed dealer |
| Dealer special plates | Issued "bearing the firm's license number" (VC §11714) |
| Contracts, temporary plates and advertising | Identify the selling dealership |
Under VC §5753(b), a licensed dealer generally meets its duty to deliver the title by submitting the documents and fees to DMV, unless the buyer demands the certificate of ownership in writing.
Why it matters
- For buyers: a missing or invalid number is a red flag that the seller may not be licensed.
- For curbstoning checks: a private seller with many cars and no dealer number may be dealing without a license. See How many cars can you sell without a dealer license?
- For dealers: your number goes on paperwork DMV audits. Errors delay transfers and invite penalties.
How to check one
Use DMV's Occupational License Status Information System and search by license number or business name. See How to look up a dealer license number.
Frequently asked questions
What is a dealer number?
The occupational license number DMV issues to a licensed dealership.
Is the dealer number the same as the VIN?
No. The VIN identifies the vehicle. The dealer number identifies the business that sold it.
How do I verify a dealer number in California?
Search it on DMV's Occupational License Status lookup.
Related questions
- How to look up a dealer license number
- What does DLR mean on a license plate?
- How to register a used car in California
- Back to the California Dealer License FAQ
Resources
- DMV manual §8.010: Completing the Report of Sale (REG 51) (Opens in new window)
- California Vehicle Code §5753 (Opens in new window)
- DMV manual §2.090: Special dealer plates (Opens in new window)
Sources: DMV Vehicle Industry Registration Procedures Manual §§8.010 and 2.090 · Vehicle Code §§5753 and 11714. Verified 2026-10-16.
This article is for educational purposes only and is not legal advice. Title and form layouts change; follow DMV's current instructions.