What You Need to Do to Register an Out-of-State Trailer in Maine

To register a trailer in Maine after moving from another state, you must surrender your out-of-state registration and obtain a Maine registration from the Bureau of Motor Vehicles. The process takes about two weeks if you have all documents ready, though it can take longer if your trailer needs a safety inspection or if paperwork is incomplete. You cannot legally operate the trailer on Maine roads with an out-of-state registration once you become a Maine resident.

The Maine Bureau of Motor Vehicles handles all trailer registrations. You will work directly with them — there is no separate trailer registration office. Most people complete this in person at a BMV branch office, though some steps can be done by mail if you cannot visit in person.

Key Takeaways

  • You must bring your out-of-state registration, proof of Maine residency, and a bill of sale or title document to the BMV office.
  • Trailers registered in Maine for the first time may need a safety inspection from a state-approved inspector, which costs money and takes a separate appointment.
  • The registration fee depends on the trailer's dry weight and how long you want the registration to last (one, two, or three years).
  • If your trailer has a lien (the bank or lender owns it), you will need written permission from the lien holder before the BMV will register it in your name.
  • You can find the nearest BMV office and current wait times on the Maine Bureau of Motor Vehicles website.

Gather Your Documents Before Visiting the BMV

Bring your current out-of-state registration and your trailer's title or bill of sale. If you do not have the title, you will need a bill of sale signed by the previous owner with the sale date, purchase price, and both signatures. The BMV will not register a trailer without proof of ownership.

You also need proof that you now live in Maine. A driver's license with a Maine address, a lease or mortgage in your name, or a utility bill dated within the last 60 days all work. If your driver's license still shows an out-of-state address, bring two forms of proof instead of one.

If someone else holds a lien on the trailer (a bank, credit union, or finance company), bring a letter from them stating they consent to the registration transfer. Some lien holders provide this automatically; others require you to request it. Call the lender before your BMV visit to confirm whether they need to send anything.

Understand the Safety Inspection Requirement

Maine requires a safety inspection for trailers being registered in the state for the first time, unless the trailer was previously registered in Maine and you are straightforward transferring ownership. The inspection checks that brakes, lights, coupling, and frame are safe to operate on public roads.

You must schedule the inspection with a state-approved inspector before or after your BMV visit — the BMV cannot do it. The BMV office can give you a list of approved inspectors in your area. The inspection typically costs between $25 and $50, depending on the inspector. Once the inspection is complete, the inspector gives you a certificate that you bring to the BMV.

If your trailer fails inspection, you have time to fix the problems and schedule a re-inspection. Many people schedule the inspection appointment first, fix any issues, then visit the BMV once they have the passing certificate in hand. This avoids a second trip to the BMV office.

Calculate the Registration Fee

Maine registration fees for trailers are based on the trailer's dry weight — the weight of the trailer itself without cargo. You can find this on the trailer's manufacturer's plate, usually mounted on the frame near the tongue. If you cannot locate it, the previous owner or the bill of sale may list it.

Fees vary by weight and registration term. A light utility trailer (under 1,500 pounds) costs less than a heavy equipment trailer (over 5,000 pounds). You can choose a one-year, two-year, or three-year registration. The BMV website lists current fee schedules by weight class, and the office staff can calculate your exact fee once you provide the weight.

Bring a payment method — cash, check, or debit/credit card — to the BMV office. If you are mailing in your registration, include a check or money order.

Visit the BMV Office or Mail Your Documents

The fastest route is to visit a BMV office in person with all documents and the safety inspection certificate. Bring your out-of-state registration, Maine proof of residency, title or bill of sale, the inspection certificate, and payment for the registration fee. The staff will review everything, issue your Maine registration, and give you new plates on the same day.

If you cannot visit in person, you can mail your documents to the BMV. Include a cover letter listing what you are sending, your contact phone number, and the registration term you want (one, two, or three years). Mail everything to the Bureau of Motor Vehicles at the address listed on their website. Processing by mail takes two to three weeks, and the BMV will contact you if anything is missing.

Do not mail your original title or lien letter — send copies instead. Keep the originals for your records. If the BMV needs the original, they will contact you and you can bring it to an office or mail it separately.

What Happens After Registration

Once your registration is approved, you receive a Maine registration certificate and new Maine license plates. Attach the plates to your trailer before towing it on Maine roads. Your old out-of-state registration is no longer valid.

Keep your registration certificate with you when you tow the trailer. Maine law requires you to have proof of registration in the vehicle towing the trailer. Renew your registration before the expiration date on the certificate — you can renew by mail, online, or in person at any BMV office.

Frequently Asked Questions

Can I use my out-of-state registration while I wait for the Maine registration?

No. Once you become a Maine resident, you must register your trailer in Maine within a certain timeframe. Operating it with an out-of-state registration after that is illegal. Register it as soon as you have your documents ready to avoid fines or having the trailer impounded.

What if my trailer does not have a title?

A bill of sale signed by the previous owner works instead. It must include the sale date, purchase price, trailer description (year, make, model if known), and both signatures. If you do not have a bill of sale, contact the previous owner and ask them to provide one, or visit the BMV office to ask about other options for proving ownership.

Do I need to register the trailer if I only use it occasionally?

Yes. Any trailer operated on Maine public roads must be registered, regardless of how often you use it. If you store the trailer off-road and never tow it on public roads, registration is not required, but once you tow it anywhere on a public road, it must be registered.

How long does the whole process take?

If you visit the BMV office in person with all documents and a passing safety inspection certificate, you can complete registration the same day. If you mail your documents, allow two to three weeks. The safety inspection itself takes one to two weeks to schedule, depending on inspector availability in your area.

What if I move to Maine but keep my trailer registered in my old state?

Maine law requires you to register your trailer in Maine once you become a resident. Keeping an out-of-state registration is not legal. You must complete the registration transfer within the timeframe set by Maine law to avoid penalties.