First go at offering a seller financing deal, and I'm a little unsure if I'm wording the offer correctly. Here are the numbers.A sales contingency is when you will need to sell your current home in order to close on the house you're offering to buy. In this video we're going to cover how a purchase contract works. Our real estate experts have helped break down the most common areas where real estate purchase offers can go awry and what to read closely before you sign. First, download the form to your desktop and save to your personal computer. You have to use Conditional Deed of Sale wherein certain clauses should be added to the normal DOAS. Keep the bank guarantee and stipulate that the downpayment. A proof of funds letter is upfront proof that you are financially able to purchase the home. Here's what one looks like and how to get it.