ADA assistive listening requirements, explained (with a receiver calculator)

General information, not legal advice. We paraphrase the 2010 ADA Standards for Accessible Design on ada.gov. Your attorney, ADA coordinator or code official has the final word for your building.

Who has to provide assistive listening?

Two groups, under two parts of the ADA. Title II covers state and local government: city halls, council chambers, county and municipal courts, public libraries, public schools and universities, park districts. Title III covers private businesses open to the public: theaters, auditoriums, hotels and conference centers, private schools, senior centers and similar places.

Senior living is mixed. Assisted living, memory care and skilled nursing communities are generally treated as public accommodations under Title III, and those funded through Medicare or Medicaid generally fall under Section 504 of the Rehabilitation Act as well. Independent-living apartments fall mostly under the Fair Housing Act, though their public community rooms can bring in the ADA. More on what that means for senior living.

The Standards’ room-by-room rules, including the receiver table below, apply when you build or alter an assembly space. Older rooms aren’t automatically exempt: the ADA’s effective-communication rules list assistive listening among the aids a public body or business may need to provide. Your ADA coordinator or attorney can say how that applies to a room nobody has touched in years.

Do churches have to provide assistive listening?

Not under the ADA itself. Religious organizations, and entities they control, including places of worship, are exempt from Title III (42 U.S.C. §12187). Two things can still apply. Building codes, most of them based on the International Building Code, can require assistive listening when a church builds or renovates an assembly space, because the code follows the building rather than the owner. State codes treat places of worship differently, so ask your code official before a renovation. And a non-religious organization that runs a public program in your building may have obligations of its own.

Most churches don’t loop because of a rule. They loop because members stopped following the sermon. Our page on hearing loops and Auracast for churches covers pews, balconies, budgets and what to tell your committee.

Which rooms need it?

Each assembly area where hearing what’s said is integral to using the room needs a system (§219.2). If a room has no sound amplification, the Standards don’t require one there, with one exception: courtrooms need assistive listening whether or not they have speakers.

The Standards define assembly areas broadly, naming classrooms, lecture halls, courtrooms, public meeting and hearing rooms, legislative chambers, theaters, auditoriums, concert halls, arenas and convention centers, among others. A council chamber is both a legislative chamber and a public meeting room, and a library’s community room counts too.

Once a room has microphones and speakers, the amplification exception no longer covers it, so if a renovation adds a sound system, plan assistive listening at the same time. Courtrooms never get the exception, because testimony is where a missed word matters most. Here is what that means for courtroom privacy and spill.

Lobbies, concourses and service counters aren’t assembly areas, so Table 219.3 sets no receiver count for them, though counter loops are common at desks because they work. We’ll walk you through which rules touch which room.

How many receivers does the ADA require?

The count comes from the room’s seating capacity: 2 receivers up to 50 seats, rising with the seats to 55 at 2,000, then 1 more for every 100 seats after that. Fractions always round up. Enter your seat count below; the table under the calculator lists common sizes and works without JavaScript.

Use seating capacity, not typical attendance. For a room with movable seating, ask your code official how capacity is figured for it.

The rule behind the numbers

Three worked examples

• A 120-seat council chamber falls in the 51–200 row: 2, plus 70 seats over 50 ÷ 25 = 2.8, rounded up to 3. That’s 5 receivers, and 2 must be hearing-aid compatible.
• A 300-seat sanctuary or auditorium falls in the 201–500 row: 2, plus 250 ÷ 25 = 10. That’s 12 receivers, and a quarter of 12 is 3 hearing-aid compatible.
• An 800-seat theater falls in the 501–1,000 row: 20, plus 300 ÷ 33 = 9.1, rounded up to 10. That’s 30 receivers; a quarter of 30 is 7.5, rounded up to 8. More on assistive listening for theaters.

Hearing-aid-compatible receivers: the 25% rule

At least a quarter of the receivers, and never fewer than 2, must work with hearing aids (§219.3). The Standards meet that with neckloops (§706.3): a loop of wire worn around the neck that plugs into the receiver and sends the sound magnetically to the telecoil in a hearing aid or cochlear implant processor.

A telecoil is a small coil built into many hearing aids and implant processors that picks up a magnetic audio signal; the listener switches to it with a button or an app. Earbuds and headphones on their own don’t count as hearing-aid compatible: many hearing-aid users can’t wear them over or in place of their aids.

When you buy, that means receivers with the standard jack, a labeled neckloop for each hearing-aid-compatible unit, a charging station and a sign saying where to ask. As of October 2026, venue Auracast receivers sell for about $335–377 each and loop receivers for about $160–310, so a 300-seat room’s 12 receivers cost roughly $1,900–4,500 before charging and signs, depending on the system. Here is the honest cost of an Auracast system, receivers included.

And a telecoil user with a neckloop receiver still has to find the desk, ask, and wear a borrowed device. That’s why the next exception matters.

The loop exception, and sharing receivers between rooms

When an induction loop serves every seat in the room, the hearing-aid-compatible count doesn’t apply (§219.3, Exception 2). Telecoil users switch to T and listen from any seat. You still provide the total number of receivers, for people without telecoils. As of October 2026, no other technology has this exception, Auracast included.

“Every seat” is the phrase that matters. A loop that covers only the front half, or goes weak in the middle, doesn’t really earn the exception. The way to show coverage is to measure it: field strength within ±3 dB of the reference level across the seating, the core IEC 60118-4 test, written up in a commissioning report that lists any position outside the window. We only advise relying on Exception 2 when every seat measures inside it.

In a small room the exception saves only a couple of neckloops. Its real value is that telecoil users don’t have to ask anyone for anything.

Several rooms, one set of receivers (Exception 1)

If a building has several assembly areas under one management, you may size receivers on the total seats in those rooms rather than room by room, as long as every receiver works with every room’s system (§219.3, Exception 1). A library with meeting rooms of 40, 60 and 120 seats needs 10 receivers counted separately (2 + 3 + 5) but 9 counted together at 220 seats, and 3 hearing-aid compatible instead of 6.

Pooling works only if the receivers move easily and two big events don’t run at once, so we plan it with your room schedule in hand.

What the receivers must do (§706)

The Standards set a floor for the equipment itself: a standard jack, enough volume for people with significant hearing loss, a wide volume range, low internal noise and limited distortion. Check each product’s spec sheet against this list before you buy a fleet.

• Jack: a standard 1/8-inch mono jack, so people can plug in a neckloop or their own headphones (§706.2).
• Hearing-aid compatibility: through neckloops, for the receivers counted as hearing-aid compatible (§706.3).
• Volume: able to reach a sound pressure level of at least 110 dB and no more than 118 dB, with a 50 dB range on the volume control (§706.4).
• Noise: a signal-to-noise ratio of at least 18 dB for noise the system makes itself (§706.5).
• Distortion: peak clipping no more than 18 dB relative to the peaks of speech (§706.6).

None of this covers the sound going in: a receiver that meets every number is still useless on a muffled, half-mixed feed. More on that under what the ADA doesn’t check.

Signs

Each room that needs assistive listening needs a sign saying it’s available, with the International Symbol of Access for Hearing Loss (§216.10). Where you have a ticket office or window, the signs can go there instead of at each room. Say where to get a receiver, too: the Standards don’t require that line, but people need it.

For a hearing loop, advocates recommend the version of the symbol with a “T”, which tells telecoil users they can switch over without asking for anything. For Auracast, registering the venue with the Bluetooth SIG is free, licenses its Auracast signage, and isn’t mandatory. Put a line on agendas, programs and your website as well, such as “Hearing loop in this room: switch to T. Receivers at the clerk’s desk.”

Is Auracast™ broadcast audio ADA compliant?

Our reading: the scoping rule doesn’t name a technology. The Standards’ advisory notes mention wired, induction loop, infrared and FM systems because Bluetooth broadcast audio didn’t exist in 2010. A radio system that meets §706 can serve as the assistive listening system, and Auracast is a radio system, so it can be part of the answer.

Two things don’t change. The hearing-aid-compatible share can only be met with neckloops on loan receivers; the loop exception has no Auracast equivalent. And the count is set by seats. Some guests will arrive with hearing aids or phones that support Auracast, but the current text gives no credit for devices people bring, and no regulator has addressed it.

Those receivers matter in practice, not just on paper. As of October 2026, iPhones can’t join an Auracast broadcast on their own, only some Android phones can, and most hearing aids in use don’t support Auracast yet. For most rooms where a loop can be built, our default is a loop and Auracast fed from the same mix. Loop, Auracast or both walks through that choice, and how we design Auracast systems covers the rest.

Standards are catching up. IEC 63087:2026, published on September 18, 2026, sets requirements for providing assistive listening systems of every type, 2.4 GHz streaming included. IEC 60118-17, a dedicated standard for 2.4 GHz streaming to hearing aids, is forecast for November 2027. Meanwhile, we walk-test and document every Auracast system against its design.

Building codes, and where IEC 60118-4 comes in

The ADA isn’t the only rulebook. Most Midwest states and cities adopt building codes based on the International Building Code, which has its own assistive listening requirement for assembly spaces and points to the ICC A117.1 standard for the technical details. Your code official enforces those codes at plan review and inspection, whether or not anyone mentions the ADA.

The 2017 edition of ICC A117.1 references IEC 60118-4, the international performance standard for hearing loops, for induction loops; check which edition your jurisdiction has adopted. Many Illinois projects fall under the Illinois Accessibility Code instead. Code editions differ by state and sometimes by city, so ask your code official which one applies to your project, and write IEC 60118-4 into your specification either way.

IEC 60118-4 sets what a loop must deliver: a reference field strength of 400 mA/m at 1 kHz, held within ±3 dB across the listening area; a frequency response from 100 Hz to 5 kHz within ±3 dB of the 1 kHz level; and low background magnetic noise. We design and verify every hearing loop to IEC 60118-4, whether or not your code requires it, because it’s the objective test of whether a loop works.

What the ADA doesn’t check: whether anyone can hear

The ADA counts receivers and signs. It doesn’t test whether speech is clear at every seat. A loop can be installed, signed and counted and still fail the people it’s for: weak in the middle, buzzing, muffled, or fed the wrong mix. Only a measurement tells you which, so we measure every system before we hand it over.

The failures we get called to fix are predictable. As a rule of thumb from our design software, reinforced concrete can absorb 3–6 dB of the signal at 1 kHz and 9–18 dB at 5 kHz, which takes the consonants out of speech; we measure it on site. A loop fed from a mix without the dais microphones passes the meter while nobody can follow the meeting. Auracast has its own versions: a strong signal carrying no sound, or dropouts once the room fills, because one person in the path absorbs about 10 dB of the signal and two absorb about 15 dB.

A commissioning report is the record that the system works: every reading, the instrument, the date and what was adjusted. It’s also what you hand an advocate, a board member or an attorney who asks.

Keep a record

If anyone asks how a room meets the assistive listening rule, one folder should answer it. Keep these together, on paper and on a shared drive, and update them after every annual check:

• The commissioning report: measured results against IEC 60118-4 for a loop, with the date and instrument, or the walk-test record for Auracast.
• As-built drawings showing where every loop wire runs, so the next flooring crew doesn’t cut one.
• A receiver inventory: how many you have against the Table 219.3 count, which have neckloops, serial numbers, and where they’re stored and charged.
• Photos of each sign, with its location.
• A one-page procedure: who hands out receivers, how to check the system before a meeting, and who to call when it fails.
• A dated note after each annual check: what was measured and what changed.

Sources

• U.S. Department of Justice: 2010 ADA Standards for Accessible Design (§106.5 definitions, §216.10, §219, §706)
• 42 U.S.C. §12187: the Title III exemption for religious organizations
• U.S. Access Board: ADA and IBC comparison, scoping
• Illinois Accessibility Code, 71 Ill. Adm. Code 400
• Auracast positions: Bluetooth SIG Auracast FAQ, HLAA on Auracast systems, Center for Hearing Access on Auracast (all checked October 2026)