Recommended good practice for landlords in Northern Ireland, not a statutory requirement. Every 12 months, and here is who can do it, which properties it covers and what the law says.
Every 12 months in Northern Ireland. The next one is due 12 months after the last.
A suitably competent person.
No. It applies to rented properties that are not HMOs, and with a solid-fuel appliance (a stove or open fire).
No. It is recommended good practice rather than a statutory duty in Northern Ireland. No statutory sweeping duty for a single let in Northern Ireland; an annual sweep is good practice. A CO alarm is required by law where there is a solid-fuel appliance. For HMOs, annual flue cleaning is a licence condition.
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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