The downside of rent-to-own is that it can be more expensive than traditional renting or buying. This is because you are paying for the option to buy the home, as well as any interest and fees associated with the agreement. There is also the risk that the property may not appreciate in value as much as you hope, leaving you with little equity when you do decide to purchase it. Additionally, if you default on the agreement, you could lose any money you have already paid towards the home.