The Grandfather Myth: Why Pre-1990 Buildings Are Not Exempt from ADA Compliance

The Most Expensive Myth in Commercial Real Estate

"My building was built before the ADA. It's grandfathered in."

That sentence has cost California property owners millions of dollars in settlements, attorney fees, and court-ordered remediation. It is also completely wrong.

There is no grandfather clause in the Americans with Disabilities Act. There never has been. The ADA.gov website states this explicitly: "There is no grandfather clause in the ADA." The Department of Justice, every federal circuit court, and every California state court to address this question have confirmed the same thing — a building's construction date provides zero exemption from current accessibility requirements.

The myth persists because property owners confuse two distinct legal concepts. Under building codes, a structure built to the standards in effect at the time of construction generally does not need to be retroactively upgraded — unless it undergoes alterations or a change of use. This is the actual "grandfather" principle, and it applies to fire codes, seismic codes, and energy codes.

It does not apply to the ADA.

The ADA created a separate, independent obligation that applies to every place of public accommodation regardless of building age or original code compliance. A restaurant built in 1955, a medical office from 1972, and a retail store from 1988 all face the same barrier removal requirements as a building completed last year. The only difference is the standard: new construction must achieve full accessibility, while existing facilities must remove barriers to the extent "readily achievable."

That "readily achievable" standard is not a shield — it is a sliding scale. What was considered too expensive or difficult in 1995 may be readily achievable today, because materials are cheaper, contractors are more available, and technology has improved. The obligation does not freeze in place. It expands.

In United States v. Los Angeles County Metropolitan Transportation Authority (C.D. Cal., April 2023), the DOJ found that Los Angeles Union Station — built in 1939, a full 51 years before the ADA — was not accessible to persons with disabilities. Metro committed $20 million for accessibility improvements including restroom retrofits, path-of-travel corrections, and 250 planned accessibility upgrades. The building's age was treated as an aggravating factor requiring more extensive work, not as a defense.

What the Law Actually Says

Two overlapping legal frameworks govern accessibility for California commercial properties: federal ADA Title III and California Building Code Chapter 11B. Both apply simultaneously. When the two conflict, the stricter standard controls.

Federal: ADA Title III and the "Readily Achievable" Standard

Under 42 U.S.C. §12182(b)(2)(A)(iv), all existing places of public accommodation must remove architectural barriers where doing so is "readily achievable" — defined as "easily accomplishable and able to be carried out without much difficulty or expense." The DOJ regulations at 28 CFR §36.304(b) list 21 specific examples: installing ramps, making curb cuts, widening doors, installing grab bars, creating accessible parking spaces, repositioning shelves, adding raised elevator markings, and installing accessible door hardware, among others.

When alterations are made to a primary function area, 28 CFR §36.403 triggers a separate obligation: the path of travel to that area must be made accessible, with accessibility improvements capped at 20% of the total alteration cost. The three-year cumulative cost rule under §36.403(h) prevents property owners from splitting projects into smaller phases to avoid this trigger.

California: CBC Chapter 11B and the Alteration Trigger

California Building Code Chapter 11B exceeds federal ADA requirements in multiple areas. Where the ADA requires 36-inch minimum clear width for accessible routes, California often requires 48 inches. Where the ADA permits operable parts on doors up to 48 inches high, CBC 11B-404.2.7 caps them at 44 inches. Parking ratios, signage specifications, and path-of-travel obligations are all more stringent under state law.

The California alteration trigger under CBC §11B-202.4 works differently from the federal rule. When the adjusted construction cost of an alteration project exceeds the 2026 valuation threshold of $209,208, full path-of-travel compliance with current CBC accessibility standards is required — not just 20%. Even a standard tenant improvement in a pre-1990 building can push past this threshold, triggering obligations that extend from the area of alteration to the primary entrance.

California's Unruh Civil Rights Act (Cal. Civ. Code §51) adds a damages layer that federal law does not: a minimum of $4,000 in statutory damages per occasion of denied access, plus attorney fees to the prevailing plaintiff. Federal ADA Title III limits private plaintiffs to injunctive relief only — no monetary damages. Plaintiffs' attorneys append Unruh Act claims to ADA complaints specifically to access California's statutory damages.

The result: a California property owner faces dual compliance obligations and financial exposure that property owners in other states do not. A building that passes a federal ADA assessment can still violate California law — and every violation exposes the owner to $4,000 in statutory damages per occasion, unless the property has been CASp-inspected and holds Qualified Defendant status.

Why Pre-1990 Buildings Face the Highest Risk

The math is straightforward. Buildings constructed before the ADA took effect in 1990 were never designed to meet accessibility standards. Every year without remediation adds another year of barrier accumulation — and another year of litigation exposure.

In the City of Los Angeles, roughly 75% of medium and large commercial buildings (over 7,500 sq ft) were constructed before 1980 — representing over 39,000 buildings with high ADA non-compliance risk. Across the greater LA metro area, pre-1990 building stock ranges from 81.7% in Beverly Hills to 99.7% in West LA. Hollywood sits at 97.8%. Mid-Wilshire at 97.7%. Koreatown at 97.3%.

These are not estimates. These numbers come from LA County Tax Assessor data analyzed by the Building Electrification Institute. They mean that virtually every commercial property in core Los Angeles was built without any ADA consideration — and every one of them carries the same barrier removal obligations as a building constructed yesterday.

Serial plaintiffs target what they can see from the street

Older buildings are easier to identify because their non-compliance is visible. A stepped entrance with no ramp. Faded parking striping. Non-compliant door hardware. Narrow doorways. These are the violations serial plaintiffs document during "drive-by" scouting, and they are overwhelmingly concentrated in pre-1990 construction.

The data confirms the targeting pattern. Seven of the top 11 most-targeted ZIP codes for ADA physical barrier lawsuits in 2024 were in Los Angeles County — areas dominated by pre-1980 commercial building stock. The top violations reported to the CCDA in 2024 are hallmarks of pre-ADA construction: non-compliant parking (15.96% of all violations), exterior path-of-travel barriers (10.89%), and inaccessible counter heights (9.41%).

In 2024, a single law firm — So. Cal. Equal Access Group — filed 2,598 federal ADA lawsuits in California through attorney Jason Kim, averaging 7 cases per weekday using 24+ serial plaintiffs. Manning Law APC filed 1,775 complaints and demand letters, accounting for 41.1% of all CCDA submissions statewide. Together, the top 10 firms accounted for 95.8% of all filings.

Once a single barrier gives a plaintiff standing, every other barrier at the property becomes actionable. The Ninth Circuit confirmed this in Doran v. 7-Eleven (506 F.3d 1191, 2007): a plaintiff who encounters or knows of one barrier has standing to challenge all accessibility barriers related to their disability at that property. For pre-1990 buildings with accumulated non-compliance across parking, entrances, restrooms, and paths of travel, a single visit can expose the owner to claims on every deficiency simultaneously.

The financial exposure compounds with each year of inaction. Multiple plaintiffs can — and routinely do — sue for the same barrier at the same building. Settling with one plaintiff does not prevent a different plaintiff from filing a new lawsuit next week for the identical violation. In 2024, 41% of federal ADA lawsuits targeted companies that had been sued before. The only way to stop the cycle is to remediate the barrier itself and document the correction through a CASp inspection that activates Qualified Defendant status.

The "Readily Achievable" Standard: What It Actually Requires

"Readily achievable" does not mean optional. It means "easily accomplishable and able to be carried out without much difficulty or expense" — and the DOJ applies a four-factor test to determine what qualifies: the nature and cost of the action, the overall financial resources of the facility, the number of employees, and the effect on expenses and operations.

The key word is "achievable," not "affordable." The DOJ regulations at 28 CFR §36.304(b) list 21 specific examples of readily achievable barrier removal, including installing ramps, widening doors, installing grab bars, creating accessible parking spaces, repositioning shelves, installing accessible door hardware, and adding raised elevator markings.

What counts as readily achievable varies by property type — but for pre-1990 buildings, the most common violations are also the most straightforward to address:

The standard also evolves. A barrier that was arguably too expensive to remove in 2000 may be readily achievable today because materials cost less, contractors specializing in ADA work are more available, and prefabricated accessibility products — portable ramps, modular grab bars, ADA-compliant hardware — now exist at a fraction of their original price. The DOJ has stated that readily achievable barrier removal is an "ongoing obligation." The analysis must be revisited periodically. A property owner cannot assess the property once, conclude nothing is readily achievable, and never reassess.

The California Supreme Court confirmed in Munson v. Del Taco (46 Cal.4th 661, 2009) that a property owner does not need to intend to discriminate. The court unanimously held that ADA violations at a place of public accommodation automatically trigger Unruh Act damages of $4,000 minimum per occasion — strict liability, no intent required. For a pre-1990 building that has never removed a single barrier, the question is not whether violations exist. It is how many.

What Property Owners Should Do Now

If your building was constructed before 1990 and has never had a CASp inspection, you have maximum liability exposure with zero legal protections. Every day without an inspection is a day a serial plaintiff can target your property for full $4,000-per-occasion Unruh Act damages with no reduction available.

The fix is a CASp inspection. It is the only action that simultaneously identifies every violation at your property, provides a contractor-ready scope of work to address them, and activates the legal protections that change the economics of a potential lawsuit.

Step 1: Schedule a CASp inspection

A Certified Access Specialist conducts an on-site assessment of your property: parking, paths of travel, entrances, restrooms, service counters, signage, and common areas. For most commercial properties, the inspection takes 1 to 4 hours. Same-day preliminary findings are available for properties in urgent situations — demand letter received, escrow closing, or imminent litigation.

Step 2: Receive a contractor-ready scope of work

A CASp report from an inspector with construction experience delivers more than a violation list. It provides itemized remediation with materials, specifications, dimensions, and sequencing that a contractor can bid on immediately. A report from a CASp who Built Ronald Reagan UCLA Medical Center with Tutor Perini, an ENR Top-10 Contractor, tells you exactly what the fix involves — and goes straight to a contractor for bidding, with no additional architectural interpretation required.

Step 3: Qualified Defendant status activates

The moment your CASp inspection is complete and the Disability Access Inspection Certificate is issued, Qualified Defendant status becomes available under Cal. Civ. Code §55.52. If a lawsuit is filed after your inspection date, you qualify for three protections that fundamentally change the economics:

• 75% damage reduction: Statutory damages drop from $4,000 to $1,000 per occasion under Cal. Civ. Code §55.56(g)(1), if violations are corrected within 60 days of being served.
• 90-day litigation stay: The court halts proceedings for 90 days under Cal. Civ. Code §55.54, giving you time to address violations without escalating fees.
• 120-day grace period: For businesses with 50 or fewer employees, SB 269 provides a 120-day window from statutory damages entirely while corrections are underway.

Without these protections, you are the most profitable target on every serial plaintiff's list. With them, your property becomes the least profitable — and serial filers move on to the next uninspected building.

If you have already received a demand letter, the urgency is immediate. Qualified Defendant status requires a CASp inspection completed before a lawsuit is served. The typical window from demand letter to filed complaint is 30 to 90 days. Emergency inspections with 72-hour report turnaround are available.

Your Building's Age Is Not a Shield — It's a Target

There is no grandfather clause in the ADA. There never was.

The "readily achievable" barrier removal standard applies to every commercial building in California regardless of when it was constructed. That standard increases over time — the obligation expands, not shrinks. California Building Code Chapter 11B adds requirements that exceed the federal standard, and the Unruh Civil Rights Act attaches $4,000-per-occasion statutory damages to every violation.

Pre-1990 buildings face the highest risk because they were never designed for accessibility, their accumulated barriers are visible from the street, and they fit the exact profile serial plaintiff firms target. In Los Angeles County alone, 7 of the top 11 most-targeted ZIP codes are concentrated in neighborhoods where 90%+ of commercial buildings predate the ADA.

Your building was not exempted when the ADA was signed in 1990. It was not exempted when you bought it. It is not exempted now. The question is not whether your property faces risk — it is whether you address it on your terms or on a serial plaintiff's.