All offers should be presented immediately to allow your clients to consider the offer and respond, if he or she chooses, prior to the expiration deadline. The industry standard is to get back to interested buyers within 24 to 72 hours.Offer a closing date that works for the seller. No tricks, no gimmicks, no hidden fees or costs. Just follow below and you will be well on your way to getting the best offer for your Maryland house. Topics on this page. A: Under Maryland law, contracts for the sale of real property (house or land) must be in writing and signed.