Fair market value means the price at which a property would transfer for cash or its equivalent under prevailing market conditions if:  Exposed for sale in the open market with a reasonable time for the seller to find a purchaser. Both the seller and the purchaser know all of the uses and purposes to which the property is adapted and for which it is capable of being used and of the enforceable restrictions on its use. Both the seller and the purchaser seek to maximize their gains and neither is in a position to take advantage of the exigencies of the other.