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. Writing a compelling offer letter requires you to include all the necessary elements, follow certain best practices, and keep the relevant factors in mind.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. 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. Complete the offer letter included in this packet with the details of your offer. Be sure to check out the sample letters for ideas on the bio section. Here are house offer letter samples to win a bidding war. 3 examples to use as a reference point. The offer process for a home can be stressful.