DSA IR 11B-10: SCOPING AND PATH OF TRAVEL UPGRADE REQUIREMENTS FOR FACILITY ALTERATION, ADDITION AND STRUCTURAL REPAIR PROJECTS (with revisions issued through April 2017)

2. If the following elements of a path of travel have been constructed or altered in compliance with the accessibility requirements of the immediately preceding edition of the California Building Code, it shall not be required to retrofit such elements to reflect the incremental changes in this code solely because of an alteration to an area served by those elements of the path of travel:

1. A primary entrance to the building or facility,
2. Toilet and bathing facilities serving the area,
3. Drinking fountains serving the area,
4. Public telephones serving the area, and
5. Signs.