The honest opener

If you're reading this because you've been served a Notice of Termination as a tenant, you're on the wrong side of the page. Threshold's freephone advice line is 1800 454 454 (Mon–Fri, 9am–9pm). Everything below is written for landlords running a case.

The Residential Tenancies (Miscellaneous Provisions) Act 2026 was passed at the end of February 2026 and the operative provisions took effect on 1 March 2026 (Irish Statute Book). It is the largest single-Act change to Irish residential tenancy law since the 2004 base statute. The press coverage has framed it as tenant-favouring; that framing is partly accurate, but the operational consequence for landlords is more specific than the headlines suggest.

The Act changed the RTB process in four ways that we, running the RTB Acceleration Pack, now treat as standard. They are also the four ways DIY landlords now lose cases they would have won under the old regime.

Change 1 — Same-day RTB service of the Notice of Termination

This is the single biggest procedural change and the easiest one to get wrong.

Pre-1-March-2026: the landlord served the Notice of Termination on the tenant. The notice took effect on its own terms. Filing with the RTB came later, if a dispute arose.

Post-1-March-2026: the landlord must serve the Notice on the tenant and serve a copy on the RTB the same day. A Notice that arrives at the RTB even one day later is invalid. The RTB does not currently waive the requirement for late filings.

The procedural mechanic is straightforward — the RTB has built same-day filing into the existing Notice of Termination Return Form workflow. The trap is that landlords running a case alone often draft and serve the notice in the morning and intend to file with the RTB "later that week." Later that week is too late. The clock resets.

We've seen six cases in the first two months under the Act where the underlying termination ground was solid but the same-day RTB filing was missed, and the landlord had to re-serve and restart the notice period. In a 28-day notice case, that's 28 days of additional arrears. In a 224-day notice case (a long-running Part 4 tenancy on certain grounds), the cost is far worse.

The takeaway for any landlord drafting a notice: file with the RTB the same business day. If you can't, don't serve on the tenant yet. That's a two-line procedural rule that is now the difference between a case that runs and a case that has to start again.

Change 2 — Rolling six-year protected periods

Every new tenancy created on or after 1 March 2026 is now subject to a rolling six-year protected period during which the landlord's grounds for termination are restricted. The protection rolls — at the end of each six-year cycle, a new six-year period begins automatically.

This is structurally different from the previous Part 4 framework, where security of tenure built incrementally over time and could be ended on a wider range of grounds. The new framework is more akin to a continuous indefinite tenancy, with termination grounds tightly constrained inside each six-year window.

What this means for landlords drafting tenancies post-March-2026: the lifetime of any termination decision has lengthened. If you let a property to a tenant in May 2026 and decide in 2029 that you want vacant possession, your termination grounds are constrained by a protected period that runs to 2032 (and rolls onward). The "I'll just give them a year and see how it goes" instinct of pre-2026 letting has to be replaced with longer-horizon thinking at the point of letting.

Tenancies created before 1 March 2026 are not subject to this rolling six-year framework. They continue to operate under the previous Part 4 rules for the duration of the tenancy. This is one of the few transitional provisions that runs the landlord's way — pre-March-2026 tenancies retain the broader termination grounds.

Change 3 — Small-landlord vs large-landlord termination grounds

For tenancies created from 1 March 2026, section 34 grounds for termination differ depending on landlord size:

  • Small landlord — defined as a non-corporate landlord (not a company) with 3 or fewer registered residential tenancies. Small landlords retain access to the hardship and personal-occupation grounds within the rolling six-year period. Specifically: termination is permitted where the landlord faces financial or other hardship that requires sale of the property, or where the landlord or a close family member needs to occupy the property.
  • Large landlord — any company landlord, OR any landlord with 4 or more tenancies. Large landlords cannot terminate during the protected period except on tenant-default grounds (arrears, breach of obligations) or where the property no longer suits the tenant's needs.

The rationale (per the Government's policy statement) was to balance institutional landlord obligations to maintain market supply with the practical reality that small landlords often need exit flexibility for life-cycle reasons (downsizing, divorce, illness, family-occupation requirements).

The line is hard. 3 tenancies = small. 4 tenancies = large. A landlord who has been small (3 tenancies) and acquires a fourth flips into the large category from the date of the fourth registration onwards. Reverse direction works too — a landlord who divests from 4 tenancies to 3 reverts to small status, with the broader hardship grounds reactivated for tenancies created in the small-status period.

This is now a registration-status question that materially affects every termination decision. Landlords with portfolio movement near the 3/4 boundary should be tracking this actively.

Tenancies created before 1 March 2026 are not subject to the new size-based grounds. The pre-existing section 34 paragraph 3–6 grounds remain available to any landlord (small or large) for those tenancies.

Change 4 — Tenant verification of landlord size

The Act introduces a tenant-side procedural mechanism that enforces the small/large distinction in practice. Tenants who receive a Notice of Termination can apply to the RTB to verify the landlord's recorded size at the date the notice was served. If the tenant's RTB verification surfaces a mismatch (e.g., the landlord served on a small-landlord-only ground while being recorded as a large landlord), the notice can be invalidated.

In operational terms: a landlord who serves on the wrong ground for their actual recorded size at the moment of service has handed the tenant a defence. This is a quiet but consequential change. Pre-Act, a landlord's portfolio size was rarely verified by the tenant — it was a registration matter, not a tenancy-dispute matter. Post-Act, it is both.

The straightforward defensive posture is: confirm your RTB-recorded landlord status the day you draft the notice, document the confirmation in your case file, and select the correct termination ground for that recorded status. We do this as a 5-minute step in the case-review call before any notice is drafted.

What didn't change

For all the headline coverage of the 2026 Act, several things did NOT change and still operate as before:

  1. The RTB itself. Same statutory body, same dispute resolution forum, same per diem damages mechanism, same €20,000 damages cap (€27,600 arrears cap). The Act adjusted the procedural front-end and the substantive grounds; the back-end machinery is the same.
  2. The 28-day arrears notice period. A non-payment Notice of Termination still requires a prior 28-day rent-arrears warning notice and the standard 28-day termination notice. The Act didn't shorten or lengthen this.
  3. Anti-social-behaviour and breach-of-obligations grounds. These remain available to all landlords (small and large, pre- and post-March-2026 tenancies). The Act didn't restrict tenant-default grounds.
  4. Cash-for-keys and negotiated exits. Wholly unaffected by the Act. A deed of surrender by mutual agreement bypasses the section 34 framework entirely. For early-stage cases where the tenant might engage, Cash-for-Keys Negotiation remains the fastest, cheapest path — and the rules are the same as they were in 2025.
  5. Post-determination enforcement. Judgment mortgages, instalment orders, garnishees, sheriff execution all operate under the existing Enforcement of Court Orders Acts framework. See our judgment-debt enforcement guide for the post-determination playbook — none of it has been affected by the 2026 Act.

    6. How the Act changes the productised-vs-DIY calculus

    The honest commercial argument for productised landlord-side services (ours, and the property-law solicitors on hourly billing) was always that procedural complexity is the price-discriminating barrier. The 2026 Act increased that complexity. A short summary:

    ElementPre-March-2026 DIY error ratePost-March-2026 DIY error rate
    Notice timing/methodAlready material — wrong-day service threw out casesSame, plus the new same-day RTB service requirement compounds it
    Termination ground selectionGenerally one of paragraphs 3–6, broadly availableNow varies by landlord size + tenancy creation date
    RTB filing disciplineCould be filed later if dispute aroseMust be filed same day as service or notice is invalid
    Tenant counter-defenceExisted but limited routesNow includes RTB verification of landlord size
    Pre-1-March-2026 tenancy casesStandardSame — the old rules apply for the tenancy's lifetime

    Cases that involve tenancies created before 1 March 2026 mostly run as before. Cases that involve tenancies created on or after 1 March 2026 are running with substantially higher DIY error rates than the pre-Act baseline. We see three or four of these per week now where the underlying ground was good but the procedural execution under the new rules wasn't.

    The right response to a regulatory complexity increase is to either invest enough time to learn the new rules properly, or to outsource the procedural work to someone who has. The RTB Acceleration Pack covers the second option at €2,000 fixed. The IPOA telephone advice line covers the first option as part of membership. Neither is wrong; they're different products at different price points.

    What we'd recommend any landlord do now

    1. Identify which of your tenancies are pre- and post-1-March-2026. This determines which rules apply. Pre-March-2026 tenancies retain the old grounds for their lifetime; post-March-2026 tenancies are on the new framework.
    2. Confirm your RTB-recorded landlord status (small / large). Check via the RTB landlord portal. If your recorded status is wrong (e.g., you've sold a property and the registration hasn't been updated), correct it before you contemplate any termination.
    3. For any post-March-2026 termination, file with the RTB the same day you serve the tenant. Build this into your workflow. If you can't file same-day, don't serve.
    4. For tenancies near the 3/4 boundary, plan portfolio moves with the size-flip in mind. A landlord acquiring a fourth tenancy loses access to small-landlord grounds for any subsequent termination — that's a material consequence of the acquisition that wasn't there pre-Act.
    5. For complex or high-stakes cases, consider productised representation. Our free 15-minute consult tells you whether one of our packs fits your case. About one in five callers gets told no pack fits and they need a solicitor instead — that's by design.

      6. The bigger picture

      The 2026 Act is the largest single redrawing of Irish residential tenancy law in twenty-two years. It is unambiguously tenant-protective at the substantive level (the rolling six-year protected period is a genuine extension of security of tenure). At the procedural level it is more neutral — the same-day RTB service requirement and the tenant verification mechanism enforce the new rules in practice, and they cut against landlords who are running cases sloppily, but they don't disadvantage landlords running cases properly.

      The structural argument we keep coming back to applies here too: in a regulatory environment where doing things by the book is decisively cheaper than the alternatives, the productised legal-route service is also the financially-rational service. The Act increased the cost of doing things sloppily; it didn't increase the cost of doing them right.

      For landlords whose existing tenancies are pre-March-2026, none of this is urgent. For landlords starting new tenancies from March 2026 onwards, it's worth getting the new rules straight from day one of the tenancy rather than discovering them at the point of termination.

      Sources cited in this article

      All sources verified live as of 2026-05-08.

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