Most developers are required by their lenders to pre-sell a certain percentage of their projects before the bank or lender will lend them the funds for construction. This is the risk (and the opportunity) when buying a preconstruction condo unit. If for some reason the developer decides not to build the project then your deposit money has not been appreciating. Preselling condos has become a standard practice. Once the required presale percentages have been reached and construction has begun, your risk is greatly reduced.