The acceptance letter, along with the offer, constitutes the formation of a binding contract between the buyer and the seller. Under New York Law, a contract for the sale for real property must be in writing; thus a verbal offer creates no binding obligation upon either party.Making an offer on an apartment in NYC can be nervewracking but it doesn't need to be! Most real estate contracts include wording where if you don't accept an offer, you can still be required to pay the commissions. The three legal requirements for all contracts are an offer, acceptance and consideration. If the offer is accepted, the agent will send out the sales instructions, which allow the buyer's solicitor to complete the original contract.