The Insurance Services Office (ISO) HO-3 gives coverage, then takes it away, and then gives it again.
The valuation clause states that replacement cost applies to the building when it is insured to 80% of its value.
The bad news is in the Exclusions section. It states that if there is an ordinance or law that adds to the cost to rebuild, there is no coverage for that additional cost.
The good news is in the Additional Coverages section. It provides an additional amount of insurance to cover costs due to enforcing ordinances or laws. The additional amount caps at 10% of the building limit of insurance.
Click here to review the PF&M analysis of these sections of the HO-3.