Which type of property value is determined by investors?

Investment value refers specifically to the value of a property as determined by an individual investor based on their specific criteria, expectations, and potential investment returns. This value can vary significantly from one investor to another due to factors such as different risk tolerances, investment strategies, and financial goals. It reflects what the property is worth to that particular investor, taking into account potential income streams, costs, and the investor’s specific circumstances.

In contrast, market value is generally determined by the collective opinion of buyers and sellers in the market and reflects what a property might sell for under typical market conditions. Assessed value typically refers to the valuation assigned by a governmental entity for taxation purposes, which may not directly reflect current market conditions or an investor's perspective. Depreciated value generally relates to the decrease in value over time due to wear and tear or obsolescence, which does not specifically account for investor-driven expectations or returns.

Thus, investment value distinctly denotes the valuation viewpoint of investors, making it the correct answer.