OL 4000 Form – If you operate a California business that holds a DMV occupational license — such as an auto dealer, dismantler, manufacturer, transporter, or similar vehicle-related operation — and your physical business address has no regular U.S. Postal Service mail delivery, the OL 4000 form is the official document you need.
Also known as the Postal Service Verification of No Mail Delivery Service or Change of Mailing Address, the OL 4000 allows licensed businesses to request (or change) an alternative mailing address while keeping all business records at the approved physical location. It is required only when regular postal service is unavailable at your licensed business address.
This guide explains everything you need to know about the OL 4000 form, including who needs it, when to use it, step-by-step completion instructions, and how to submit it correctly.
Who Needs the DMV OL 4000 Form?
The OL 4000 is exclusively for businesses with California DMV Occupational Licenses (OL). It is not used for personal driver’s licenses, vehicle registration address changes, or standard DMV customer mailings.
Common users include:
- Auto dealers and dismantlers
- Vehicle manufacturers and distributors
- Salespersons and transporters
- Other vehicle-industry professionals regulated by DMV Occupational Licensing
Business records must remain at the licensed and approved physical address — the OL 4000 only addresses mailing issues.
When Should You Submit the OL 4000 Form?
Use the form in these situations:
- You are requesting a mailing address for the first time because regular postal service is not available at your business location.
- You need to change a previously approved mailing address due to ongoing postal delivery problems.
Typical reasons verified by the Postal Service include:
- Rural vandalism reported to the U.S. Post Office
- Theft reported to the U.S. Post Office
- The address is not a deliverable address (with explanation)
The form ensures your business can receive important DMV correspondence without violating licensing rules that require mail to be tied to a verifiable location.
Step-by-Step: How to Fill Out the OL 4000 Form?
The form is straightforward and divided into three main sections. Here’s exactly how to complete it:
Section A – Reason for Submission
Check one box:
- Request for Mailing Address (new request)
- Change of Previously Approved Mailing Address
Section B – To Be Completed by Licensee (Business Owner)
Provide:
- Business name
- Occupational License (OL) number
- Physical business address (city, state, ZIP)
- Requested or new mailing address (city, state, ZIP)
- Former mailing address (if changing)
- Printed name, signature, title, and date of the licensee
Section C – To Be Completed by Postal Representative
A U.S. Postal Service employee must verify the issue by:
- Checking the appropriate box (e.g., “Not a deliverable address” or vandalism/theft)
- Providing their printed name, title, signature, date, phone number, and post office address
- Applying the official U.S. Postmaster’s stamp
Important Note: Incomplete forms or missing postal verification will delay processing. Business records must stay at the licensed address.
Where to Submit the Completed OL 4000 Form?
Mail or deliver the original completed form to your local Occupational Licensing (OL) Inspector. California has 14 OL inspector field offices and 2 designated service locations. Appointments are recommended — walk-ins are generally not accepted.
Find your local office and contact information on the official DMV Occupational Licensing Inspector Field Offices page.
Official OL 4000 PDF Download (Current Version)
Direct download link (provided):
https://www.dmv.ca.gov/portal/uploads/2025/02/OL-4000-R8-2005-ASB-WWW.pdf
This is the current official version (REV. 8/2005), hosted directly by the California DMV and confirmed active as of 2026. Always download from dmv.ca.gov to ensure you have the latest authorized copy.
Key Requirements and Compliance Tips
- The form can only be used when regular postal service is not available at the business location.
- You must maintain all required business records at the licensed physical address.
- False information or misuse may affect your occupational license compliance.
- Keep a copy for your records before submitting.
Frequently Asked Questions (FAQ) About OL 4000
Q: Can individuals use the OL 4000 for personal address changes?
A: No. It is strictly for DMV-licensed businesses under Occupational Licensing.
Q: How long does it take to get approval?
A: Processing times vary by office; contact your local OL Inspector for current timelines.
Q: Is the form still current in 2026?
A: Yes — the REV. 8/2005 version remains the official form listed on the DMV website.
Q: Do I need an appointment to submit?
A: Yes — most OL offices require appointments. Call ahead.
Why the OL 4000 Form Matters for Your Business?
Maintaining a valid mailing address is essential for timely receipt of DMV notices, renewals, and compliance documents. Using the OL 4000 ensures your business stays fully compliant with California Vehicle Code requirements while solving real-world postal delivery challenges.
Need the form right now?
Download it here: OL 4000 PDF – California DMV
For the most accurate and up-to-date instructions, always refer to the official California DMV Occupational Licensing pages and contact your local OL Inspector directly.
Last updated: April 2026. Information based on current DMV forms and procedures.