Call PennDot and ask. The seller's signature may require notarization on some out-of-state titles.This document will require notarization and may be required for registration. Does a bill of sale have to be notarized in New York? No. A bill of sale for a private party vehicle transfer does not need to be notarized in New York. Both parties do not have to be present at a notary even if both are PA residents. âť– Form MV-1 must be completed and a check or money order payable to the Commonwealth of. While a bill of sale is generally valid without notarization, there are situations where it becomes a wise precaution. Looking for a Pennsylvania bill of sale? We provide a free printable form with detailed guidelines and a document maker for custom forms.