A legal requirement for landlords in Northern Ireland. No fixed renewal date, and here is who can do it, which properties it covers and what the law says.
There is no fixed renewal date. It is a standing duty that applies whenever the rules below are triggered, for example at the start of a tenancy.
A suitably competent person.
No. It applies to rented properties with a gas supply (natural gas or LPG), or with oil-fired heating, or with a solid-fuel appliance (a stove or open fire).
Smoke, Heat and Carbon Monoxide Alarms for Private Tenancies Regulations (NI) 2024 (SR 2024/123), reg 3: a CO alarm (BS EN 50292) in every room or circulation space with a fixed combustion appliance (gas, oil or solid-fuel boiler, fire or stove, but not a gas cooker) or a flue. New tenancies from 1 September 2024; existing tenancies from 1 December 2024.
Written from the same rule Beamwise uses to track this for properties in Northern Ireland, last updated 15 Sept 2026. Rules change, so check the legislation named above or take professional advice before relying on it.
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