The contractor is just not permitted to include the waivers within the "modest print" or buried within the legalese from the agreement. If possible, usually do not comply with a waiver of implied warranties, as it can limit your rights to sue from the occasion of a later on dispute. https://www.topworldnewstoday.com/8-things-to-consider-before-getting-a-contractor-in-building-a-new-house/