NY doesn't require you to sign in front of a notary. While a bill of sale is generally valid without notarization, there are situations where it becomes a wise precaution.For most private vehicle sales between individuals, a bill of sale does not need to be notarized to be considered legally valid and binding. The quick answer is, usually, no. Generally when you sell your car, you won't need to worry about notarization. In many cases, you are not legally obligated to notarize a bill of sale. Six states actually require that a bill of sale be notarized before it can be used to transfer the title of a vehicle. Create a customized New York Bill of Sale document with our professionally written legal template. Begin now to generate your own personalized form. You can get a notarized bill of sale template from a legal or business website.