Pennsylvania - Other Types of Vehicles - Registration Steps With The PA DMV - DMV Guide
When you register your homemade trailer, or one made from a kit, there are several registration steps. Take four color photos, one of each side of the trailer. With these photos, be sure to include the chains attached to the tow hitch, and of the lighting present on the trailer.
Complete an MV-1, Application for Certificate of Title, and Form MV-426, Application for Reconstructed or Specially Constructed Vehicle.
You'll also need to submit a Bill of Sale and documents that prove ownership. These documents could include a certificate of title, the manufacturer's certificate or origin, salvage certificate, and receipts for all major components.
The title fee for homemade trailers is $22.50, plus you'll need to pay sales tax, and the appropriate trailer registration fee. The annual registration fees for trailers weighing:
* 3,000 lbs. or less―$6
* 3,001 lbs. to 10,000 lbs.―$12
* 10,001 lbs. or more―$27
You may register trailers 10,000 pounds or less for one to five years at a time.
This is for homemade trailer so I am not sure if it differs but the best bet would be call the DMV and ask.