the real estate property Investment value

Real estate investment value:-
       It is the value of the property for a specific person, given its financial condition and cash flows. The tax situation sometimes requires some investors to purchase investments that may be financially losing in the short term and therefore have no value to another investor. Real estate losses are sometimes used for long-term investment gains.

then the cost :-
     The price paid to obtain a good is its cost to the buyer. The cost price to a specific buyer may not be the same as the cost price to another person (the purchase price varies according to different people.
The cost price of the property is the price of purchasing the land and building on it, and not necessarily the price of selling it.