Several housing organizations, like the National Association of Home Builders and Mortgage Bankers Association, have expressed support for the legislation, arguing that it will open doors for homeowners and would-be homeowners to build generational wealth and equity. The move would also address the nation's housing supply crisis. Still, industry leaders caution that federal backing alone won't solve all the obstacles. Challenges around valuation, underwriting and builder capacity remain barriers to scaling ADUs into a widespread affordability solution.