ADA plaintiffs find websites to sue the same way anyone could: they run automated accessibility scanners against large batches of sites and flag the ones with obvious, machine-detectable failures — missing image alt text, unlabeled form fields, links and buttons that a screen reader announces as nothing. An ADA serial plaintiff — a person or law firm that files these suits by the dozens or hundreds — treats that scan output as a lead list, manually confirms a few barriers, and files a near-templated complaint. If your site fails a free scan in thirty seconds, you are findable, and the finding is largely automated.
What is an ADA serial plaintiff?
Title III of the Americans with Disabilities Act lets a person with a disability sue over access barriers, and most courts treat business websites as covered — in Robles v. Domino’s Pizza (2019), the Ninth Circuit held the ADA applies to a website and app tied to physical locations, and the Supreme Court declined review. An ADA serial plaintiff uses that right at industrial scale: dozens or hundreds of near-identical suits, usually filed through a handful of specialized firms.
The volume is real. 8,667 ADA Title III lawsuits were filed in 2025 — among the highest totals on record — and more than 5,000 of them targeted websites and apps, up roughly 20% over 2024. A large share of that digital docket comes from repeat filers.
The economics explain the model. Most of these cases settle for between $10,000 and $75,000 plus a remediation commitment; the average settlement runs $30,000 or more before you count attorney fees. Defending in court usually costs more than settling, so most defendants pay. For a firm working from complaint templates, that is a volume business — and target selection is systematic, not personal.
How do serial plaintiff firms find websites to sue?
Nobody is browsing the web hoping to stumble onto a barrier. The pipeline looks like this:
- Bulk automated scanning. Free and commercial tools can test enormous numbers of pages for detectable WCAG failures, and there is no shortage of hits: WebAIM’s 2025 analysis of the top one million homepages found detectable failures on 94.8% of them.
- Filtering for loud failures. The most common problems — low-contrast text, missing image alt text, missing form labels, and empty links or buttons — are exactly the ones a scanner flags in seconds and a complaint can describe concretely.
- Manual confirmation. The plaintiff or a tester then attempts a real task with a screen reader — add a product to the cart, book a table, check out — and documents where it breaks. That firsthand barrier is what goes into the complaint.
- Template, file, repeat. Because the complaints are nearly identical, the marginal cost of lawsuit number forty is close to zero.
What makes a website an easy target?
Three things, usually together: the site sells something (a transaction the plaintiff can attempt and fail), it visibly fails an automated scan, and it sits in reach of a plaintiff-friendly venue. A site with zero automated-scan violations is not immune — automated tools detect only roughly a third of WCAG success criteria — but it never lands on the lead list, and staying off the list is most of the game.
Which businesses get sued the most?
By industry, e-commerce dominates: roughly 70% of 2025’s web-accessibility suits targeted online retail, with food service around 18% and healthcare around 4%; the rest spread across fitness, education, travel, and entertainment. If your site has a cart, a menu, or a booking flow, you are in the pool.
Geography matters just as much. New York leads state-court filings — its state and city human-rights laws stack on top of the ADA. Florida is the most active state for federal filings. And California generates a steady stream of demand letters through the Unruh Act, which makes any ADA violation an automatic state-law violation carrying minimum statutory damages of $4,000 per violation plus attorney’s fees — we cover the mechanics in our guide to California Unruh Act website lawsuits.
Hotels face a dedicated wave of their own: the DOJ’s reservation rule (28 CFR 36.302(e)) requires online booking systems to identify accessible rooms and features, and a whole category of suits targets exactly that omission. For where filings are heading, see our breakdown of ADA lawsuit trends in 2026.
Does an accessibility overlay keep serial plaintiffs away?
No — and the data suggests it can make you a more attractive target, not less. UsableNet’s reports repeatedly find that hundreds of the companies sued each year already had an accessibility widget or overlay installed. WebAIM’s million-homepage analysis found sites running overlays averaged roughly as many detectable errors as sites without them. The overlay sits on top; the underlying code still fails the same scan the plaintiff’s firm runs.
The compliance claims themselves are now a legal liability. In January 2025 the FTC announced a $1 million action against accessiBe over claims that its widget could make any website WCAG-compliant; the final order bars unsubstantiated compliance claims. The National Federation of the Blind formally opposes overlay products, describing them as “not only ineffective but harmful.”
One distinction worth being precise about: a user-facing preference widget — contrast and text-size controls on a site that is already accessible at the code level, making no compliance claims — is a courtesy; our own site runs one. A third-party overlay sold as making a broken site compliant is a different product with a false promise. The problem is the compliance claim, never the preference button. See our full accessibility widget vs. overlay comparison.
How do you get off the target list?
The playbook is unglamorous, which is why it works:
- See what they see. Run the same class of automated scan a plaintiff’s firm runs — or request a free accessibility audit and we will run it for you, with the results explained in plain English.
- Fix the loud failures at the code level. Low-contrast text, missing alt text, unlabeled form fields, and empty links or buttons account for most detectable errors. Fixing them moves you toward zero automated-scan violations and removes the signal that put you on the list.
- Test the money paths by hand. Automated tools catch only part of WCAG 2.2. Run your checkout, contact, and booking flows with a keyboard alone and with a screen reader, because that is precisely what the plaintiff will do.
- Benchmark against WCAG 2.2 AA. It is the conformance level courts, settlements, and regulators reference. Full-conformance claims should only ever rest on expert human testing, never on a scan alone.
- Monitor. Sites regress with every template change and content update. A clean scan from last year proves nothing about today.
To be clear: none of this makes a business lawsuit-proof, and anyone who promises that is selling something. But serial litigation is a numbers operation, and numbers operations skip hard targets. And more than 1 in 4 U.S. adults live with a disability — every barrier you remove is a customer who can now buy from you.
If you want to know whether your site would surface on a plaintiff firm’s lead list, start with our free accessibility audit. We run the same automated checks they do, review the results by hand, and tell you exactly what to fix first — no scare tactics, no overlay pitch.
Frequently asked questions
Is it legal for one person to file hundreds of ADA lawsuits?
Generally, yes. The ADA does not cap how many suits a person can file, and the law was built around private enforcement — no federal agency pre-approves claims. Courts occasionally push back on standing (whether the plaintiff genuinely intended to use the business), but those rulings are case-by-case and have not slowed overall filing volume. The courts will not filter serial plaintiffs out for you; the reliable defense is not appearing on the lead list at all.
What should I do if I receive an ADA demand letter?
Do not ignore it, and do not panic-install an overlay — companies with overlays installed get sued every year. Loop in a lawyer, preserve the letter and your site’s current state, and get an honest technical read on what a scan and a screen-reader test actually show. We wrote a step-by-step guide on what to do when an ADA website demand letter arrives.
Are small businesses really targets, or just big brands?
Small businesses are sued routinely. Because most cases settle in the $10,000-to-$75,000 range, a serial filer does not need a Fortune 500 defendant to make a case worthwhile — a small online shop that fails a scan and can write a five-figure check is a perfectly good target. Big brands make the headlines; volume filings mostly hit businesses that never expected to be noticed.