The ADA "Grandfather Clause" Myth for Parking Lots

The Most Expensive Misconception in Parking

"My lot is from the eighties, it's grandfathered in." It is one of the most common things business owners say about accessible parking, and it is wrong. There is no grandfather clause in the ADA that exempts old parking lots from accessibility. Believing there is one is how owners end up surprised by a demand letter or a building-department requirement they thought they were immune to.

This page clears up the myth: where it comes from, why it is false, and what an existing lot actually owes. The general accessible-parking standard is in our ADA parking compliance guide for Oregon, and this is general guidance, not legal advice.

Where the Myth Comes From

The grandfather idea is borrowed from other areas of law. Zoning and building codes often do grandfather existing structures, allowing a building that was legal when constructed to remain even if codes later change, until it is altered. People reasonably assume the ADA works the same way.

It does not. The ADA is a civil rights statute, not a building code, and it took a different approach. Rather than exempting existing facilities, it imposed obligations on them that apply regardless of when they were built. The confusion is understandable, but the conclusion, that an old lot is exempt, is the part that gets owners in trouble.

Why There Is No Grandfathering

The ADA reaches existing facilities through two separate mechanisms, neither of which has an age cutoff:

• The readily achievable duty. For existing facilities of public accommodations, businesses have an ongoing obligation to remove barriers where doing so is readily achievable, easily and inexpensively done. This duty applies no matter how old the lot is, and it is continuous. Our readily achievable barrier removal page covers it in depth.
• The alteration standards. When you alter a facility, repave a lot, reconstruct it, expand it, you must bring the altered area and the path of travel up to current standards to the extent required. This applies whenever you do the work, regardless of the lot's age. Our does repaving trigger ADA upgrades page explains the alteration trigger.

Between these two, an old lot is never exempt. It owes the readily achievable removals continuously, and it owes the alteration standards whenever it is worked on. There is no third path where age provides a pass.

The Building-Code Layer in Oregon

There is a related point that reinforces the myth's falseness in Oregon. Even setting aside the federal ADA, Oregon administers accessibility through the Oregon Structural Specialty Code, enforced by local building departments. When you pull a permit to alter or repave a lot, the building official applies the current state accessibility code as a condition of approval. An old lot does not get to keep its old accessibility just because it is old; the moment you do permitted work, the current code applies.

So in Oregon there are effectively three reasons an old lot is not grandfathered: the federal readily achievable duty, the federal alteration standards, and the state building code at permitting. None of them care how old the lot is.

What an Old Lot Actually Owes

Stripped of the myth, the real obligation for an existing Oregon lot is straightforward:

• Continuously remove readily achievable barriers. The cheap, simple accessible-parking fixes, striping, symbols, signs, aisle clearance, should be done as part of an ongoing duty.
• Meet current standards when you alter the lot. Any repaving or reconstruction brings the obligation to comply to the extent required, both federally and under the Oregon code at permitting.
• Do not assume age protects you. The most exposed lots are the ones whose owners believed they were grandfathered and did nothing.

The practical move is to stop treating the lot as exempt and start treating it as a lot with ongoing, manageable obligations, most of which are inexpensive striping and signage work.

Turning the Myth Into a Plan

The good news buried in the bad news is that most of what an old lot owes is cheap. The readily achievable barriers, the ones the duty most directly reaches, are overwhelmingly striping and signage fixes. An ADA compliance audit process identifies what your specific lot needs, and the bulk of it is usually a restripe-and-resign project, not a reconstruction.

The owner who accepts that there is no grandfather clause, gets the lot assessed, and knocks out the low-cost fixes is in a far better position than the one clinging to the myth until a letter arrives. This is general guidance, and your lot's specific obligations depend on its condition and your plans, which an assessment and, where needed, legal counsel can confirm.