Guide to the ADA Standards

Special Provisions for Alterations

The standards apply the same requirements used in new construction to alterations but also include provisions unique to alterations. Some provisions clarify application, while others are structured as exceptions that limit coverage or relax technical criteria under certain conditions. Located throughout the standards at the relevant scoping or technical requirement, these provisions and exceptions are distinguished by references to “alterations” or “existing facilities.”

Examples of Provisions for Alterations

Vertical Access

An accessible route to stories and mezzanines is required in alterations (or additions) where stairs or escalators are added where none existed previously and major structural modifications are necessary (§206.2.3.1) (or as needed to provide an accessible path of travel to an altered primary function area if not disproportionate to the cost (§202.4)), unless the building is exempt from the requirement for access between stories.

Elevators

If elevators are altered, all cars programmed to respond to the same call control must be similarly modified (§206.6.1).

Fire Alarms

Compliant fire alarm systems are required only in alterations where fire alarm systems are installed new, replaced, or upgraded (§215.1, Ex. 1).

Ramps

Slightly steeper running slopes are permitted for short ramps (maximum 6” rise) where space is limited (§405.2, Ex.).

Stairs

Full handrail extensions at stairs are not required where they would project hazardously into circulation paths (§505.10, Ex. 3).