Appreciation is the rise in a property’s value over time. Market appreciation comes from outside forces — local demand, neighborhood growth, and general inflation — while “forced” appreciation comes from things you control, like renovations or raising net operating income, which can lift what the property is worth.
Appreciation is largely unrealized until you sell or refinance, and it isn’t guaranteed — values can stall or fall. That’s why many investors treat it as the upside on top of cash flow rather than the reason to buy. Together with loan paydown, appreciation is what builds your equity over the years you hold.