I want to write a letter that is compelling. My realtor says he's not allowed to attach letters to offers because he can lose his license.What Items Are Required to Submit an Offer? Mention what you liked in the property and why you liked the property. Focus on three things: State your intentions, show that you have the financial means to make the purchase and make a personal appeal to the seller. Learn how to submit a property offer in New York using our stepbystep guide. In this article we will discuss the specific items you need to prepare in order to submit an offer on a property here in NYC. What documents are required to make an offer in NYC? Submitting an offer involves more than just proposing a price that you find reasonable and that the seller is likely to accept. Make sure to sign and date the second page.