Do I Need a Written Tenancy Agreement in Ireland?

If you are renting out a property in Ireland - or renting one as a tenant - you might wonder whether a written tenancy agreement is legally required. The short answer: while verbal agreements are technically valid, a written agreement is strongly recommended by the RTB and is essential for protecting both parties.

What the Law Says

The Residential Tenancies Act 2004 (as amended by the 2026 Act) does not strictly require a written tenancy agreement. However, landlords are legally required to provide tenants with a written statement of the tenancy terms. In practice, a comprehensive written agreement serves this purpose and goes much further - covering rent, deposit, obligations, termination, and house rules in detail.

Since 1 March 2026, all new tenancies are Tenancies of Minimum Duration (TMDs) with a 6-year rolling term and nationwide rent control (capped at CPI or 2%, whichever is lower). A written agreement that reflects these new rules is more important than ever.

Why a Written Agreement Matters

Without a written agreement, disputes become a matter of "he said, she said." The RTB handles thousands of disputes every year, and cases with clear written terms are resolved faster and more fairly. A written agreement protects the landlord by documenting the rent, deposit conditions, and tenant obligations. It protects the tenant by confirming the rent amount, the tenancy type, and the landlord's maintenance duties.

What Should Be Included

A solid tenancy agreement should cover the names and addresses of all parties, the property address and eircode, the rent amount and payment method, whether the tenancy is fixed-term or TMD, deposit amount and return conditions, house rules, maintenance responsibilities, termination provisions, and a GDPR clause for how tenant data is processed.

The 2026 Act Changes

The Residential Tenancies (Miscellaneous Provisions) Act 2026 introduced nationwide rent control, replacing the old RPZ system. It also introduced Tenancies of Minimum Duration (TMDs) with restricted termination grounds, and different rules for small (1-3 tenancies) and large (4+) landlords. Any agreement created from March 2026 onward should reflect these changes.

What Happens Without One

If a dispute arises and you have no written agreement, the RTB will apply the default terms of the Residential Tenancies Act. These may not reflect what you actually agreed verbally. For landlords, this can mean being unable to enforce house rules or specific deposit conditions. For tenants, it can mean uncertainty about rent review terms or notice periods.

The Bottom Line

A written tenancy agreement is not technically mandatory, but it is practically essential. It protects both parties, makes RTB registration straightforward, and ensures compliance with the 2026 Act's new rules on rent control and TMDs. For the cost involved, there is no good reason not to have one.