This is an electronic version of Form 500NY in a fill-able pdf format. The program application does all of the calculations for you.How to fill out the Mobile and Manufactured Home Purchase Agreement and Sales Contract? How to fill out the Mobile Home Purchase and Sale Agreement? 1. Enter the date of the agreement. 2. This template outlines the terms, conditions, and responsibilities for both buyers and sellers. Download now to secure your mobile home purchase. A mobile home bill of sale is used to prove the legal sale and purchase of a mobile home between a buyer and seller. Edit, sign, and share mobile home purchase agreement online. No need to install software, just go to DocHub, and sign up instantly and for free.