I don't use my insurance much, nor do I read the details in the declarations pages. I just know what I've said because a lady across the street from me had her house burn down. She wanted to take the settlement and move somewhere else. She couldn't until the house got rebuilt. Then she could sell it, take the proceeds, and use that to buy a new house elsewhere.
Every insurance policy you have ever seen has a stated limit. That limit is expressed in dollars, not board feet or gallons of paint.
Insurance companies are not in the house building business. They truly do not care what you do with the money.