On Offer acceptance there is either a contract generated or a pro forma invoice generated. Since the offer is binding once accepted, the offer if well enough detailed and advised can and often does take the place of the contract. Customarily in Real Estate transactions the purchase offer itself is generally also the contract for purchase as well. The offer becomes a binding contract once accepted.
Contrary to the sellers' and their super sales_conscious agents' familiar claim that "There is nothing to lose in signing those documents," quite the complete opposite is true _ namely, a great deal, in fact, could potentially be lost particularly by the buyer by signing an LOI to a supposed seller. Why? In a word, this is because the LOI is actually fraught with many incalculable legal flaws, traps and pitfalls, much of which could often be prohibitively costly for the buyer, according to legal authorities and contract law experts. (See below for more on this)