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Unfortunately, when the cowboys of real estate decided to value assets they used this fairly lazy concept of cap rate to reach a market valuation. It takes gross effective rent and subtracts operating expenses (property tax, insurance, utilities, salaries, grounds and maintenance - only painting and cleaning type maintenance no capital improvement dollars, amenities) and totally ignore all big capital expenditures to the property. Valuing a real estate asset at a cap rate where you treat the cap rate as a yield is essentially treating every capital expenditure for the property as a "sunk cost".
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