HMO portable appliance testing (PAT) in Northern Ireland

A legal requirement for landlords in Northern Ireland. Every 12 months, and here is who can do it, which properties it covers and what the law says.

At a glance

How often
Every 12 months
Who does it
A registered, qualified electrician
Applies to
Rented properties that are houses in multiple occupation (HMOs)
Legal status
Legal requirement

Common questions

How often is the HMO portable appliance testing (PAT) needed in Northern Ireland?

Every 12 months in Northern Ireland. The next one is due 12 months after the last.

Who is responsible for the HMO portable appliance testing (PAT)?

A registered, qualified electrician.

Does it apply to every rented property in Northern Ireland?

No. It applies to rented properties that are houses in multiple occupation (HMOs).

What does the law say?

NI HMO standard licence conditions: a current PAT certificate for appliances the landlord supplies, produced to the council on demand. The conditions say 'current' without fixing an interval; 12 months is a Beamwise default.

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.

All Northern Ireland landlord requirements

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Beamwise provides compliance-tracking tools and does not constitute legal advice. Requirements differ between the Republic of Ireland and Northern Ireland and must be verified by a qualified professional. Privacy · Terms