MarkhamBuilding InspectionsInspections

Smoke Alarms

Published by City of Markham

This is the City of Markham’s document, as published on its website on 18 October 2026. The municipality may have changed it since: check the current version at the source. Legal notice

Type: Guide
Published by: City of Markham
Date: January 1, 2025
Also called: Smoke Alarms (Part 9)
For: builder
Building types: All building types
Pages: 4
Instruments: CAN/ULC-S531 · CAN/ULC-S553 · NFPA 72

Overview

Markham's four-page Builder Tip Issue No. 5 on smoke alarms in houses, linked as Smoke Alarms (Part 9) among the City's housing tips for the 2024 Ontario Building Code and dated January 1, 2025. It quotes Articles 9.10.19.1. to 9.10.19.6.: where alarms go, including houses with a secondary suite, sound patterns, location on each storey and by sleeping rooms, visual signalling to NFPA 72 at 175 cd in bedrooms, hard-wired power with seven-day battery backup, interconnection and ten-minute silencing, then an Objective citing CAN/ULC-S553.

What it covers

9.10.19.1. Required Smoke Alarms
9.10.19.2. Sound Patterns of Smoke Alarm
9.10.19.3. Location of Smoke Alarms
9.10.19.4. Power Supply
9.10.19.5. Interconnection of Smoke Alarms
9.10.19.6. Silencing of Smoke Alarms
Objective

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