For example, if one apartment is always vacant in a 20-unit apartment, the annual vacancy rate is 1%. The annual vacancy rate varies greatly depending on individual factors of the property and market conditions.

Fixed property tax, city planning tax, repair reserve fund, etc. are annual expenses. Usually, the target of the annual expense ratio is 10% to 20%.

The borrowing period depends on the building's age, structure, and other conditions.

Yield obtained by simply dividing the rent income when the room is full by the property price Use this to roughly understand the profitability of the property.

Yield calculated by subtracting vacancy costs and annual expenses from rent income when occupied. Generally, it is used to understand the actual yield.

Yield obtained by dividing take-off income by own funds at the time of purchase. Use this to understand the return on your own funds.