Superadequacy is a type of functional obsolescence. It is a feature of the real estate that is not fully valued by the marketplace because is bigger, better, larger, or not typical of similar properties.
•Superadequacy is an improvement that costs more than its contributory value.
•Superadequacy is never curable.
•A swimming pool that cost $15,000 may only add $5,000 to the value of the house.
•The owner installs gold faucets in the master bath at a cost of $10,000. The contributory value is less than $2,000.
•A lavishly finished basement that cost $75,000 may add $25,000 to the value of the house.