((a)) ** .—** Except as provided in subsection (b) and subject to any reasonable accommodations that may be made for individuals in accordance with the Americans with Disabilities Act ( et seq.) restrooms in a public building shall be equipped with baby changing facilities that the Administrator determines are physically safe, sanitary, and appropriate.

((b)) ** .—** The requirement under subsection (a) shall not apply—

((1)) to a restroom in a public building that is not available or accessible for public use;

((2)) to a restroom in a public building that contains clear and conspicuous signage indicating where a restroom with a baby changing table is located on the same floor of such public building;

((3)) if new construction would be required to install a baby changing facility in the public building and the cost of such construction is unfeasible; or

((4)) to a building not subject to an alteration as set forth in section 3307.

((c)) ** .—** In this section:

((1)) ** .—** The term “baby changing facility” means a table or other device suitable for changing the diaper of a child age 3 or under.

((2)) ** .—** The term “public building” means a public building as defined in section 3301 and controlled by the Public Building Service of the General Services Administration.