Architects, contractors, developers, and owners handle a lot of responsibilities on a project; hence it would be impossible for anyone in that role to dedicate all their time and focus to the accessibility codes. If you're relying on the permitting plan review by your local jurisdiction to ensure accessibility, keep in mind that they are only reviewing for local code compliance in the limited time they have. They are not responsible for verifying accessibility compliance with the federal codes, such as the ADA Standards or the Fair Housing Act.