You Got an ADA Demand Letter. What It Means and What to Do First

Q: What is an ADA demand letter?

A demand letter is a pre-litigation document: a law firm, usually representing a plaintiff, writes that your website violates the Americans with Disabilities Act because a person with a disability could not use it. The letter typically lists alleged WCAG failures, missing alt text, inaccessible forms, keyboard traps, low contrast, and proposes that you resolve the matter before a lawsuit is filed. Two facts put the letter in perspective. First, a large share of these letters come from a small group of law firms representing serial plaintiffs, the American Bar Association notes that a handful of plaintiffs and firms account for a striking portion of all digital-ADA activity. Second, most demand letters never become public lawsuits. Seyfarth Shaw, which tracks ADA Title III litigation, counted roughly 3,117 website-accessibility lawsuits filed in federal and select state courts in 2025, against tens of thousands of letters sent in the same year. A letter is a serious signal, not a verdict. None of that makes the letter safe to ignore. It means the situation is common, well-mapped, and handled best with a calm, documented response, guided by counsel.

Q: What should you do in the first 48 hours?

1. Don't ignore it, and don't reply emotionally. No angry email back, no quick "we'll fix it" promise, no public post about it. Anything you write can be used in the matter later. Silence toward the sender is fine for now; inaction on your side is not. 2. Engage an attorney, first, before anything else. Specifically one with experience in ADA Title III and web-accessibility matters. They know the firms, the patterns, and the realistic range of outcomes in your jurisdiction. Whether and how to respond, and on what terms, is a legal judgment call, not one to make from a template you found online. 3. Preserve the evidence. Keep the letter and its envelope or email headers. Capture the current state of your site: dated screenshots of the pages named in the letter, and ideally an archived copy. If you change things later, and you will, you want a clear record of what the site looked like when the letter arrived. 4. Get an independent factual baseline of your site. The letter contains the sender's claims about your site. Your attorney will want to know which of those claims are technically accurate, which are exaggerated, and what else is there. An honest automated scan gives you that first measurement in minutes: the WCAG violations a machine can establish with certainty, separated from the points that need human judgment. Scan your site for free, not because a scan resolves the letter (it does not), but because it replaces guesswork with facts you can hand to counsel. 5. Start documented remediation of the real issues, in code. Once you know what is genuinely broken, begin fixing it at the source and keep a dated record of every fix. Your attorney decides how that work is used in the matter; your job is to make sure the work is real and provable.

June 11, 2026

Short answer. You are not alone: legal observers estimate that 35,000 to 50,000 website-accessibility demand letters were sent to US businesses in 2025, far more than the number of lawsuits actually filed. Do not ignore the letter, and do not answer it on your own. Your first call is an attorney with experience in ADA and web-accessibility matters; this article is informational, not legal advice. After that, your job is to establish the facts: what is the actual state of your site, measured independently, so your attorney is working with evidence instead of the other side's claims.

What is an ADA demand letter?

A demand letter is a pre-litigation document: a law firm, usually representing a plaintiff, writes that your website violates the Americans with Disabilities Act because a person with a disability could not use it. The letter typically lists alleged WCAG failures, missing alt text, inaccessible forms, keyboard traps, low contrast, and proposes that you resolve the matter before a lawsuit is filed.

Two facts put the letter in perspective. First, a large share of these letters come from a small group of law firms representing serial plaintiffs, the American Bar Association notes that a handful of plaintiffs and firms account for a striking portion of all digital-ADA activity. Second, most demand letters never become public lawsuits. Seyfarth Shaw, which tracks ADA Title III litigation, counted roughly 3,117 website-accessibility lawsuits filed in federal and select state courts in 2025, against tens of thousands of letters sent in the same year. A letter is a serious signal, not a verdict.

None of that makes the letter safe to ignore. It means the situation is common, well-mapped, and handled best with a calm, documented response, guided by counsel.

What should you do in the first 48 hours?

Don't ignore it, and don't reply emotionally. No angry email back, no quick "we'll fix it" promise, no public post about it. Anything you write can be used in the matter later. Silence toward the sender is fine for now; inaction on your side is not.
Engage an attorney, first, before anything else. Specifically one with experience in ADA Title III and web-accessibility matters. They know the firms, the patterns, and the realistic range of outcomes in your jurisdiction. Whether and how to respond, and on what terms, is a legal judgment call, not one to make from a template you found online.
Preserve the evidence. Keep the letter and its envelope or email headers. Capture the current state of your site: dated screenshots of the pages named in the letter, and ideally an archived copy. If you change things later, and you will, you want a clear record of what the site looked like when the letter arrived.
Get an independent factual baseline of your site. The letter contains the sender's claims about your site. Your attorney will want to know which of those claims are technically accurate, which are exaggerated, and what else is there. An honest automated scan gives you that first measurement in minutes: the WCAG violations a machine can establish with certainty, separated from the points that need human judgment. Scan your site for free, not because a scan resolves the letter (it does not), but because it replaces guesswork with facts you can hand to counsel.
Start documented remediation of the real issues, in code. Once you know what is genuinely broken, begin fixing it at the source and keep a dated record of every fix. Your attorney decides how that work is used in the matter; your job is to make sure the work is real and provable.

No. The instinct is understandable, one line of code that promises "compliance" sounds like exactly what you need this week. But the record points the other way: plaintiffs have repeatedly sued sites that were already running an overlay widget, and the US FTC fined a major overlay vendor for deceptive compliance claims. We documented the numbers in sued despite an accessibility widget and the technical reasons in why an overlay widget does not protect you.

The short version: a widget places a layer over your page; the barriers named in the demand letter remain in your code underneath it. Remediation, in the sense that matters here, means fixing the code, the thing a plaintiff's expert, a court, or a regulator actually examines.

Why does California come up so often?

Because of state law stacked on top of the ADA. California's Unruh Civil Rights Act provides statutory damages of $4,000 per violation plus attorney's fees, the ADA itself, by contrast, gives private plaintiffs injunctive relief and fees, not damages. That financial asymmetry is why so many web-accessibility claims are framed under California law, and why filings concentrate heavily in California, New York, and Florida, a pattern Seyfarth's litigation tracking has shown year after year. If your letter cites the Unruh Act, that is one more reason the jurisdiction-specific judgment of an attorney comes first.

What does "documented remediation" look like?

A paper trail that shows real work over time, not a one-day cleanup:

A dated baseline scan from when the letter arrived, what was actually wrong, in machine-verifiable terms.
Fixes in your own code, each traceable: what was changed, where, when, and which WCAG criterion it addresses.
Dated re-scans showing the violation count going down, independent confirmation that the fixes hold.
A record you can hand your attorney: baseline, fixes, re-scans, and any human review of the points automation cannot judge.

This is the same evidence discipline that holds up in front of a regulator, we walk through it in how to prove accessibility to a regulator. What you should not expect: that any scan, tool, or document by itself makes the letter go away. It will not. It gives you and your counsel an accurate picture and a credible record, the rest is legal strategy, and that belongs with your attorney.

This article is informational, not legal advice, consult an attorney for your situation.

Sources

Seyfarth Shaw ADA Title III tracker (February 2026): ADA Title III Federal Lawsuit Filings Fall Slightly to 8,667 in 2025, adatitleiii.com, including website-lawsuit counts and the CA/NY/FL concentration.
American Bar Association (August 2025): Digital Accessibility Under Title III of the ADA, americanbar.org, on demand-letter volume estimates, serial plaintiffs, and the Unruh Act's $4,000 statutory damages plus attorney's fees.