ADA in Existing Facilities: Alterations, Barrier Removal, and Triggers

The single most expensive misunderstanding in accessibility compliance is the belief that the ADA works like a building code: that it applies to new construction, that older buildings are grandfathered, and that a permit from the local building department settles the matter. All three beliefs are false, and the reasons they are false define the owner's real obligations.

The ADA is a civil rights law, not a building code. There is no plan review, no permit, and no local sign-off under the federal standards; enforcement runs through complaint investigations by federal agencies and through litigation, and the ultimate arbiter of whether a facility discriminates is the Department of Justice and, if necessary, a federal judge. Local building departments enforce the IBC's accessibility chapter and may waive its provisions, but no local waiver exempts an owner from federal ADA obligations: the two regimes run in parallel, and the design that satisfies the inspector can still produce a federal action. The ADA also contains gray areas that building codes do not, which converts accessibility design into a joint exercise of designer expertise and explicit owner risk decisions rather than a checklist.

Existing facilities carry live obligations. For private facilities under Title III, physical barriers must be removed in the areas where the public receives goods and services whenever removal is readily achievable: accomplishable without significant difficulty or expense. For public entities under Title II, programs and services must be made accessible unless the improvement is an undue burden. Both duties are ongoing: a barrier whose removal was not readily achievable in 1992 must be removed whenever it becomes so, which means the compliance question is never permanently answered. And for parking specifically, the DOJ's own guidance sets a low bar: adding striping and properly sizing accessible spaces is readily achievable "in most cases," because restriping is cheap. The one recognized exception (where restriping would drop the count below a zoning or covenant minimum) comes with the Access Board's view that authorities would waive the minimum where the loss creates accessible spaces.

Successive standards and the grandfather logic. The move from ADAAG 1991 to the 2004 guidelines (carried into the 2010 Standards) works on a safe-harbor principle: a facility that meets the older standard need not be brought to the newer one unless or until it is altered; a facility that never met the older standard gets no shelter and must meet the current standard whenever the improvement is readily achievable, effectively a penalty for noncompliance deferred. The van-accessible ratio illustrates the mechanics: a pre-1992 facility that achieved the 1991-era one-in-eight van ratio holds that position until alteration, while a facility that never complied must meet the current requirement (one van space per six accessible spaces) as soon as it is achievable. The practice takeaway is an audit habit: know which standard each facility in the portfolio was built or improved to, because that fact determines today's obligation.

Alterations are the trigger. An alteration is any change affecting the usability of the facility or a portion of it (remodeling, renovation, reconstruction, structural rearrangement), and the 2004 guidelines added the one that catches parking owners: resurfacing of circulation paths or vehicular ways. Painting, reroofing, and mechanical or electrical equipment replacement that do not affect usability are exempt. Once triggered, altered elements must meet the current standard, the path of travel to the altered area carries its own improvement requirements, and any barrier removal that the alteration renders readily achievable comes due with it. The safe rule of thumb the source offers is worth adopting as policy: anything taken out gets replaced to current ADAAG specifications, expansion joints included.

Alterations and new construction: full scope. In alterations and new construction, all elements and spaces must be accessible, limited only by technical infeasibility (alterations) or structural impracticability (new construction), and the coverage includes employee-only work areas, not merely public zones, regardless of whether the entity sits under Title II or III.