Commercial Earthquake Insurance Reasonable Amount Of Insurance For Commercial Property?

Reasonable amount of insurance for commercial property? - commercial earthquake insurance

Hello, what is the appropriate level of cover for commercial property in the earthquake and fire and liability? The property is a history, 3 tenants with 5500 square meters of land. The property is approximately 1.6 million euros.
Is the amount on the value of the property or the construction of the base cost of ownership?