Hazard Insurance-Additional Insured or Interest?

It will depend on the insurance policy and most likely State insurance laws. Not having the owner of the property as a named insured on a NFIP would not be acceptable. Typically, it is not acceptable on other insurance policies also. Someone cannot insure something they do not own. While the leasee may have an additional insurable interest, normally they cannot insure a property without the joinder of the property owner. If it was allowed, the leasee could burn the building down, collect the insurance, and the building owner would be left holding the bag.