What Is ADA Accessible? Buildings, Websites, and Rights

A place, service, or website is ADA accessible when it meets the federal requirements that let people with disabilities use it on equal terms with everyone else. Those requirements come from the Americans with Disabilities Act and cover three settings: employment (Title I), state and local government programs (Title II), and private businesses open to the public (Title III). Accessibility is not a single checklist. It runs from the slope of a ramp to the contrast of text on a screen to whether a receptionist can communicate with a customer who is deaf.

The sections below walk through what “accessible” actually means in each of those areas, who has to comply, and what happens when they don’t.

Physical Accessibility: What the Building Has to Do

The 2010 ADA Standards for Accessible Design set the technical rules for the built environment. They apply in full to new construction and major alterations, and they shape what existing buildings must do when changes are “readily achievable.”¹

Routes, Ramps, and Doors

An accessible route has to run through the facility. Ramps can be no steeper than a 1:12 slope, meaning one inch of rise for every twelve inches of run.² In tight existing spaces, short rises may go up to 1:8, but nothing steeper is allowed.

Doorways need a clear opening of at least 32 inches when the door is open at 90 degrees. Thresholds can’t rise more than half an inch, and anything above a quarter inch has to be beveled so a wheelchair wheel can roll over it.³

Restrooms

An accessible restroom has a toilet centered 16 to 18 inches from the side wall, grab bars mounted 33 to 36 inches above the floor that can hold at least 250 pounds of force, and a clear floor space at least 60 inches across so a wheelchair can turn all the way around.⁴

Parking

If a facility has parking, some of it has to be accessible. A lot with 1 to 25 spaces needs one accessible space; 26 to 50 spaces needs two; and the count keeps climbing from there. At least one in every six accessible spaces has to be van-accessible.⁵

Standard accessible spaces are at least 96 inches wide with a 60-inch access aisle. Van-accessible spaces are either 132 inches wide with a 60-inch aisle or 96 inches wide with a 96-inch aisle. Two spaces can share one aisle between them.

Service Counters

Sales and service counters must have an accessible portion no higher than 36 inches off the floor. For a parallel approach, that portion is at least 36 inches long; for a forward approach, it’s at least 30 inches long with knee space underneath.⁶

What About Older Buildings?

An older building isn’t automatically off the hook. Owners must remove architectural barriers when it’s “readily achievable,” meaning doable without much difficulty or expense given the size and resources of the business.⁷ Typical examples: installing a ramp over a single step, moving furniture to widen an aisle, adding grab bars in a restroom. New construction and major renovations must meet the current standards in full.

Digital Accessibility: When Websites and Apps Count

Accessibility isn’t limited to physical space. Websites, mobile apps, and other digital services also have to work for people with disabilities, though the rules split between government and private operators.

State and Local Government Sites

In April 2024, the Department of Justice finalized a rule requiring state and local government web content and mobile apps to meet the Web Content Accessibility Guidelines (WCAG) Version 2.1, Level AA.⁸ Governments serving 50,000 or more people must comply by April 24, 2026. Smaller governments and special district governments have until April 26, 2027.⁹ The rule also reaches apps operated by private companies on a government’s behalf, such as a city parking-payment app.

Private Business Sites

For private businesses, the DOJ has not issued a specific technical rule. Its position is that Title III’s general nondiscrimination and effective communication requirements apply to what businesses offer online.¹⁰ Courts and settlement agreements routinely use WCAG 2.1 Level AA as the yardstick, so it functions as the practical standard for most business websites.

What WCAG Actually Requires

WCAG 2.1 Level AA covers several core areas:

Non-decorative images need descriptive alternative text so screen readers can convey them.
Every interactive element—links, forms, menus, buttons—must be usable with a keyboard alone.
Standard text needs a contrast ratio of at least 4.5 to 1 against its background.⁹
Videos need synchronized captions.
Auto-playing, blinking, or scrolling content must have controls to pause, stop, or hide it.

Communication Access

Being accessible also means giving people with sensory disabilities the same information, at the same time, as anyone else. The regulation calls the tools for doing this “auxiliary aids and services,” and the right choice depends on what’s being communicated.¹¹

For people who are deaf or hard of hearing, a complex interaction like a medical appointment or legal consultation usually calls for a qualified sign language interpreter. Simpler exchanges may be handled through written notes or a text device. Video remote interpreting is a common alternative when the video is real-time, full-motion, and clear enough to see the interpreter’s face, hands, and fingers. Public assembly spaces like theaters, lecture halls, and courtrooms typically need assistive listening systems.

For people who are blind or have low vision, options include Braille materials, audio recordings, screen-reader-compatible electronic documents, and large-print versions, generally in 14- to 18-point font.¹¹ The business or agency pays for these aids. Charging an extra fee for a sign language interpreter or a Braille menu isn’t allowed.

Service Animals

The most common policy question involves service animals. Under the ADA, a service animal is a dog individually trained to perform a specific task for a person with a disability, such as guiding someone who is blind, alerting to a seizure, or interrupting a panic attack. Businesses with “no pets” rules have to let service dogs, and in some cases miniature horses, come in.¹²

Emotional support animals don’t qualify under the ADA because they haven’t been trained to perform a specific task; their benefit is companionship. Federal law doesn’t require a business to admit one, though some state or local laws go further.¹³ Businesses can’t charge a surcharge for a service animal, even where pet fees would otherwise apply.

The Fundamental-Alteration Limit

A modification isn’t required if it would fundamentally alter what the business actually offers.¹⁴ A restaurant doesn’t have to change its menu concept, and a movie theater doesn’t have to describe a film’s visuals aloud during a regular screening. The business has to show the change would genuinely transform the service, not just make it harder or costlier.

Accessibility at Work

Title I of the ADA applies to employers with 15 or more employees, including private companies, state and local governments, and labor organizations. It requires “reasonable accommodation,” meaning changes to the work environment or the way a job is done that let a qualified employee or applicant with a disability participate on equal footing.¹⁵

Common workplace accommodations include:

Making a workspace wheelchair-accessible, adjusting workstation heights, or reserving close-in parking.
Modified schedules, part-time hours, or extra breaks for medical needs.
Screen-reading software, amplified phones, ergonomic tools, or other assistive devices.
Reassigning non-essential tasks, or moving the employee to a vacant position they’re qualified for.
Adjusting training materials, exam formats, or allowing remote work when the essential job functions permit it.

An employer can refuse only if the accommodation would create “undue hardship,” meaning significant difficulty or expense relative to the employer’s size, resources, and operations.¹⁵ It’s a high bar, and it’s harder for a large employer to clear than a small one.

Who Isn’t Covered

Two categories fall outside Title III entirely. Religious organizations, including churches, mosques, synagogues, and any entity they control such as a religious school or daycare, have no Title III obligations even when they open their doors to the public.⁷ Private clubs that qualify as exempt under Title II of the Civil Rights Act of 1964 are also outside ADA coverage, as long as they don’t make their facilities available to customers of a public accommodation.¹⁶ Employers with fewer than 15 employees aren’t covered by Title I.

What Happens When a Place Isn’t Accessible

A person who experiences disability discrimination can file a complaint with the Department of Justice, or, for employment issues, with the Equal Employment Opportunity Commission.¹⁷ They can also file a private Title III lawsuit in federal court without waiting for the government. Private plaintiffs can only get injunctive relief—a court order to fix the violation—plus reasonable attorney’s fees; monetary damages aren’t available to them.⁷ Fees alone can still make a losing case expensive.

When the Attorney General brings the case, the court can award damages to the people affected and impose civil penalties. As of 2024, the maximum civil penalty is $115,231 for a first violation and $230,464 for a subsequent violation, adjusted upward each year for inflation.¹⁸ Punitive damages aren’t available in ADA cases.

Tax Offsets for Getting Compliant

Two federal tax provisions help offset the cost of accessibility work. The Disabled Access Credit under Section 44 lets an eligible small business claim a credit equal to 50 percent of accessibility spending between $250 and $10,250 in a year, for a maximum credit of $5,000. To qualify, the business must have had gross receipts of $1 million or less in the prior year, or no more than 30 full-time employees.¹⁹

The Architectural Barrier Removal Deduction under Section 190 lets any business, regardless of size, deduct up to $15,000 per year for expenses tied to removing physical barriers at an existing facility, such as widening doorways or installing ramps.²⁰ Eligible small businesses can use both in the same year, but not on the same dollar of spending.

1
eCFR. 28 CFR Part 36 Subpart D – New Construction and Alterations
2
U.S. Department of Justice. 2010 ADA Standards for Accessible Design
3
U.S. Department of Justice. ADA Standards for Accessible Design Title III Regulation 28 CFR Part 36
4
U.S. Department of Justice. ADA Standards – Grab Bars at Water Closets
5
ADA.gov. Accessible Parking Spaces
6
U.S. Access Board. Chapter 9: Built-In Elements
7
ADA.gov. Americans with Disabilities Act Title III Regulations
8
Federal Register. Nondiscrimination on the Basis of Disability; Accessibility of Web Information and Services of State and Local Government Entities
9
ADA.gov. Fact Sheet: New Rule on the Accessibility of Web Content and Mobile Apps Provided by State and Local Governments
10
ADA.gov. Guidance on Web Accessibility and the ADA
11
eCFR. 28 CFR 36.303 – Auxiliary Aids and Services
12
eCFR. 28 CFR 36.302 – Modifications in Policies, Practices, or Procedures
13
ADA.gov. Frequently Asked Questions about Service Animals and the ADA
14
ADA.gov. Americans with Disabilities Act of 1990, As Amended
15
Office of the Law Revision Counsel. 42 USC 12111 – Definitions
16
Office of the Law Revision Counsel. 42 U.S. Code 12187 – Exemptions for Private Clubs and Religious Organizations
17
ADA.gov. File a Complaint
18
Federal Register. Civil Monetary Penalties Inflation Adjustments for 2024
19
Office of the Law Revision Counsel. 26 U.S. Code 44 – Expenditures to Provide Access to Disabled Individuals
20
Office of the Law Revision Counsel. 26 U.S. Code 190 – Expenditures to Remove Architectural and Transportation Barriers to the Handicapped and Elderly