At a minimum, look for: the building size, style, siding type and color, door and window specs, your total price (cash or rent-to-own monthly), your deposit amount, and an estimated delivery window. If you're going rent-to-own, the agreement should also spell out your monthly payment, term length, and any options like early payoff or same-as-cash.
If someone's asking for a deposit and can't put all of that on paper for you, that's a conversation worth walking away from. This stuff shouldn't be hard to get in writing. We hand it over as part of the normal process because that's just how it should work.
