The legal contract that binds both the purchaser and the seller to settle on the agreed date at the agreed price. It is either not subject to any conditions or those conditions have already been satisfied. You should only consider entering an unconditional agreement if and when you are absolutely sure you want to buy a particular property and you already have the full purchase price or 'pre-approved' loan finance from a lender. You should also be confident that there are no other issues or requirements that must be satisfied before you are committed to purchase the property. An unconditional agreement commits you to purchasing the property.