License Plate Lookup API — DPPA-Compliant Registered Owner Data for Developers
License plate lookup API access is now live for developers who need legal, reliable registered owner data built on a real compliance framework — not scraped databases or stale records.
This page is the official documentation hub for the License Plate Owner API. If you are a developer, legal professional, insurance adjuster, process server, or repossession company looking for a plate lookup tool you can actually stand behind — you are in the right place.
What This API Does
You send in a plate number and a state. We send back the registered owner name, current address, and vehicle details including make, model, year, and VIN.
That is it. Clean, simple, and legal.
Every lookup is fulfilled by hand by a licensed California private investigator (CA PI #27617) operating under the federal Driver’s Privacy Protection Act (DPPA). No bots. No scraped data. No gray areas.
Why DPPA Compliance Matters
The DPPA is a federal law that controls who can access vehicle registration records and for what reason. It was put in place to stop people from pulling someone’s home address just by writing down their plate number.
Most plate lookup tools on the market ignore this law entirely. They pull from copied databases and sell access without verifying who is asking or why.
That creates real legal exposure for the developer who built the app, the business using it, and the end user making the request.
This API works differently. Every request is reviewed against a valid DPPA permissible purpose before fulfillment.
Permissible Purposes We Cover
Purpose 1 — Insurance
Insurance companies and adjusters verifying vehicle ownership during claims and underwriting.
Purpose 2 — Litigation
Attorneys and legal teams who need ownership records for active court cases and legal proceedings.
Purpose 8 — Private Investigation
Licensed private investigators conducting lawful investigations.
Purpose 9 — Repossession and Towing
Repossession agents and towing companies locating vehicles tied to unpaid loans or violations.
How the API Works
The License Plate Owner API uses a simple REST structure. You can make GET or POST requests with three parameters:
plate — the license plate number state — the two letter state code purpose — your DPPA permissible purpose number
The API returns a JSON response with an order URL that routes your request directly to our licensed PI team for fulfillment.
Results come back within one to two business days.
Who This Is Built For
This tool was built for people who need plate data as part of a real, legal workflow. That includes:
Developers
Building apps for insurance companies, law firms, fleet managers, or process serving firms who need a compliant data source they can integrate cleanly.
Legal Professionals
Attorneys and paralegals who need ownership verification for litigation support without going through a full PI engagement every time.
Insurance Adjusters
Claims teams who need fast, reliable ownership data during active investigations.
Process Servers
Professionals who need to locate registered owners to complete service of process.
Repossession Companies
Agents who need to track down vehicles tied to defaulted loans across multiple states.
Coverage and Availability
The License Plate Owner API currently covers 36 US states. A free tier is available on RapidAPI to test and integrate before committing.
The API is live on two platforms:
RapidAPI: https://rapidapi.com/ljkc916/api/license-plate-owner-lookup Postman: https://www.postman.com/licenseplatelookup-3057154
Get Started
Full documentation, code examples in JavaScript, PHP, Python, and cURL, and DPPA compliance details are all available at:
https://license-plate-owner.com/api/
If you need legal, reliable registered owner data with a real compliance framework behind it — this is the only license plate lookup API fulfilled by a licensed private investigator.
About License Plate Owner
License Plate Owner is operated by Lance Casey & Associates, a licensed private investigation firm with over 25 years of experience and a law enforcement background (CA PI #27617), operating in full compliance with federal DPPA requirements.