This rule proposes to amend HUD's Fair Housing Act design and construction regulations by incorporating by reference the 2009 edition of International Code Council (ICC) Accessible and Usable Building and Facilities (ICC A117.1-2009) standard, as a safe harbor. The Accessible and Usable Buildings and Facilities standard is a technical standard for the design of facilities that are accessible to persons with disabilities. HUD proposes to determine that compliance with ICC A117.1-2009 satisfies the design and construction requirements of the Fair Housing Act and its amendments. This rule also proposes to designate the 2009, 2012, 2015 and 2018 editions of the International Building Code (IBC) as safe harbors under the Fair Housing Act. The IBC is a model building code and not law, but it has been adopted as law by various states and localities. The IBC provides minimum standards for public safety, health, and welfare as they are affected by building construction.