Market appreciation is the gradual increase in value of every property in the market. It is driven by large macroeconomic factors.
Forced appreciation comes in a much shorter timeframe. It is appreciation that comes from improving the property or improving the management of a property.
Forced appreciation typically is incremental and occurs with bursts of activity. It can even be paired with market appreciation for more dramatic results.
Forced appreciation benefits both multi family real estate investors as well as single family investors. The way it impacts both is different though.
Forced appreciation is repeatable. By creating 30% of value, that is something you can then go to a bank and refinance based off of.