Most developers contracts have no financing contingency, so...you would be expected to close when the building is complete. There are many people in the very same situation; Family & Financial situations have changed from the time the deposit was made and the contract signed. More devasting is the fact that values have also changed from the time the contract was signed and now. Many people, especially in Miami, Miami Beach, Sunny Isles Beach have bought or entered into contracts just to flip them and reap a big profit. Depending on the developer, the type of unit you bought, whether the contract is assignable, etc. You could possible sell your contract. If the unit is in demand, the developer may wish to re-sell it for you. Best to seek competent legal advise fro an experience qualified attorney.