How to fill out the Mobile and Manufactured Home Purchase Agreement and Sales Contract? 1. Enter buyer and seller details. 2.Agreement is signed and submitted with a complete application to the County of Riverside. How to fill out the Mobile Home Purchase and Sale Agreement? 1. Enter the date of the agreement. 2. Manufactured home purchase agreement (if the home is new) or accurate description of the manufactured home that confirms that the purchase agreement. Is your mobile home giveing you financial troubles? I can give you an all cash offer with no hassle, and you can close within 7 days.