This is an unoccupied flip house and our home inspector recommended having the crawl space checked out. The floor has a few saggy spots and in one corner of the living room there’s a 2 inch crack where ceiling meets the wall which might indicate settling of the floor. Also there appears to have been some joists replaced under the house by the previous owner but likely the work stopped before completion. Would like to get a professional appraisal of the seriousness of the problem.