When the deal is too good, think twice! Information is power, and when it comes to buying property off-plan having the right type of information will help you, a prospective buyer or investor, make an informed decision on whether to invest or not. Buying property off-plan simply refers to purchasing property before construction is commenced or completed. Developers use pre-construction layouts, site developmental plan and building plans to market and sell their properties (apartments, villas, bungalows, townhouses) to prospective home buyers and real estate investors.