Summary
Canada's model building code requirements for assistive listening in assembly buildings and at service counters, with an explanatory note that leaves room for technologies other than FM, infrared and loops.
Key findings
- In buildings of assembly occupancy, classrooms, auditoria, meeting rooms and theatres larger than 100 m² must have an assistive listening system, and it must encompass the entire seating area.
- At each location where the public is served at counters in assembly buildings, at least one counter needs an assistive listening system or adaptive technology, plus an amplification system where a barrier such as a glass screen is present; the system must allow the clear communication the exchange needs.
- Note A-3.8.3.19 gives FM, infrared and induction loops as examples, says the technology is advancing rapidly so other types "could be considered", and lists cost, maintenance, suitability for the audience, ease of operation and privacy as selection factors.
- Signs must show where assistive listening systems are, using the International Symbol of Access or the International Symbol of Access for Hearing Loss with information that makes the type of facility clear.
- Sets no receiver count, no hearing-aid-compatible share and no performance figures. Designers may instead follow the listed provisions of CSA B651-18 in their entirety (Clause 6.6 for communication).
Limits
A model code that provinces and territories adopt and amend on their own timetables, so the code in force may differ. The NBC states that its Notes are explanatory and not requirements. Does not mention Bluetooth or Auracast.
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Cited in
- Which systems satisfy the ADA and building codes, and does a listener's own phone count?Disputed
- Auracast, hearing loop, infrared, RF or Wi-Fi: which suits which room?Disputed
- How many receivers and neckloops does each code require, and how should a loan pool be run?Partly answered
- What commissioning tests and pass limits will the standards require?Open
- Can Auracast serve ticket windows, service counters and reception desks?Open
- What does each system cost to install and to run over its life?Open
- How do listeners learn that a venue has assistive listening, and which signs and symbols do the rules ask for?Partly answered
- What works in courtrooms, council chambers and other meeting rooms where speech must be heard by all and kept in the room?Partly answered
- What works in theatres and cinemas, and what do the rules ask of them?Partly answered
Cite this source
Canadian Board for Harmonized Construction Codes. National Building Code of Canada 2025: assistive listening systems (Articles 3.8.2.9 and 3.8.3.19, Note A-3.8.3.19). National Research Council Canada. 22 December 2025. https://doi.org/10.4224/26fz-gg26 (accessed 9 October 2026).
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