Is there any reason we should be back-referencing the 2009 version of ANSI when local code requires that we follow the newer 2017 version? It's a question that comes up quite often from architects and developers. And while it may seem counterintuitive to apply accessibility codes that were published over a decade ago, and in most cases a lot older than that. There’s actually a legal reason for using these older codes, and that’s compliance with the FHA (Fair Housing Act).