DUBLIN — The Residential Tenancies Board (RTB) plays a central role in Ireland’s residential rental system, from registering tenancies and providing information on rental law to resolving disputes, enforcing certain rental-law requirements and producing data about the rental market.
For tenants and landlords, the RTB provides information about their rights and responsibilities and a statutory process for resolving many tenancy disputes without immediately having to take a case through the courts.
The RTB’s work covers private residential tenancies, Approved Housing Body (AHB) tenancies and student-specific accommodation. Its data and regulatory functions also provide important information about the size and characteristics of Ireland’s rental sector.
The RTB’s role has become particularly important as Ireland’s rental laws have changed significantly during 2026.
What does the RTB do?
The RTB has several major responsibilities within Ireland’s rental sector.
These include:
- registering residential tenancies;
- providing information about rental rights and responsibilities;
- resolving disputes between landlords and tenants;
- investigating and enforcing certain breaches of rental law;
- publishing rental-sector data and research;
- providing information and guidance to landlords and tenants; and
- providing evidence about the rental sector to support understanding and policymaking.
The RTB is a statutory public body whose functions are set out in residential-tenancy legislation.
Its role is therefore broader than simply resolving disputes.
Tenancy registration
One of the RTB’s core functions is maintaining Ireland’s national register of residential tenancies.
Landlords must generally register each tenancy when it begins, complete annual registration and update the registration when relevant tenancy details change.
The RTB currently requires a new tenancy to be registered within one month of the tenancy start date. Annual registration must then be completed on the anniversary of the tenancy start date. Certain changes to tenancy details must also be updated.
The registration system provides the RTB with extensive information about Ireland’s rental sector.
The organisation’s Profile of the Register data can be broken down by factors including county, local authority, dwelling type, dwelling size and landlord size.
This information helps the RTB understand the rental sector and supports its research and regulatory work.
Importantly, failure by a landlord to register a tenancy does not prevent a tenant from using the RTB’s dispute-resolution service.
Resolving disputes between landlords and tenants
Another major function of the RTB is resolving disputes arising from residential tenancies.
Disputes can involve issues such as:
- rent and rent reviews;
- deposits;
- rent arrears;
- property standards;
- repairs and maintenance;
- Notices of Termination;
- illegal eviction;
- breaches of landlord or tenant obligations; and
- other matters falling within the RTB’s jurisdiction.
The RTB provides different dispute-resolution processes, including mediation, adjudication and Tribunal hearings.
Mediation is designed to help the parties reach an agreement with the assistance of a trained mediator.
Adjudication involves an independent adjudicator considering the dispute and evidence and making a legally binding decision.
A Tribunal is a further stage of the RTB dispute-resolution process in cases that are appealed to that stage.
The system provides a statutory alternative to taking many tenancy disputes directly to court.
Mediation remains private
Mediation differs from adjudication and Tribunal proceedings because it is private.
The RTB describes mediation as a confidential process in which a mediator helps the parties try to reach an agreement.
The mediator does not decide which party is right or wrong.
Where an agreement is reached, its terms can be recorded in a legally binding Determination Order.
Mediation outcomes are not published by the RTB.
This means landlords and tenants can attempt to resolve a dispute without the details being published as part of the RTB’s public adjudication record.
RTB adjudication hearings are now public
There has been an important change to the RTB dispute-resolution system from 14 September 2026.
Adjudication hearings for dispute applications made from that date are now public.
The RTB publishes a weekly schedule of adjudication hearings, and members of the public can request to attend.
The full adjudication report is also published on the RTB website.
Published reports can contain information including the names of the parties, the rental property address, details of evidence presented and the outcome.
There are limited circumstances in which an adjudication hearing may be held privately.
Importantly, dispute applications made before 14 September 2026 are not subject to the new public-hearing arrangements.
This represents a significant change in transparency within the RTB dispute-resolution system.
The RTB and rental-law enforcement
The RTB’s role is not limited to resolving disputes after something has gone wrong.
From 14 September 2026, the RTB gained new powers to issue fixed-payment notices for six specified breaches of rental law.
The breaches include:
- Failure to register a tenancy
- Failure to update tenancy details
- Failure to provide required rent-setting information at the start of a tenancy
- Setting rent above the legal limit
- Failure to notify the RTB of a rent-control exemption
- Failure to provide a rent-review notice correctly
A fixed-payment notice can result in a fine of €200 for a rent breach and €100 for other specified breaches.
The new system is additional to the RTB’s existing investigation and prosecution powers.
The RTB says that where a landlord receives a fixed-payment notice, they generally have an opportunity to correct the breach and pay the fine. Failure to comply can result in criminal prosecution.
The RTB and rent regulation
The RTB also plays an important role in administering Ireland’s national rent-control system.
From 1 March 2026, a new national rent-control system applies to private tenancies and Student Specific Accommodation, subject to the rules and exceptions applying to particular tenancies.
For most private tenancies, rent can generally be increased once every 12 months by 2% or the rate of inflation, whichever is lower, with inflation measured using the Consumer Price Index.
However, the rules are not identical for every tenancy.
For private tenancies created from 1 March 2026, rent can be reset to market rent in certain circumstances, including when a new tenancy begins in specified circumstances and at the end of a six-year Tenancy of Minimum Duration.
The RTB provides a Rent Calculator to help landlords calculate permitted rent increases.
Landlords must also follow specific notice and information requirements.
Rent-setting and rent-review notices
The requirements for rent-setting and rent-review notices are particularly important because failing to comply can make a notice invalid.
For a private tenancy created from 1 March 2026, a landlord reviewing rent generally must serve the rent-review notice on the tenant and serve a copy on the RTB within seven days.
The landlord must also provide the required supporting information, including the previous rent, the date it was last set, the RTB Rent Calculator calculation and, where required, comparable properties from the RTB Rent Register.
There are different rules for setting rent at the start of a new tenancy or resetting it to market rent in circumstances where the legislation permits this. In those situations, the RTB requires the rent-setting notice to be served on the tenant and RTB on the same day. Failure to serve the notice on the RTB as required can make the rent-setting notice invalid.
This distinction is important because the applicable procedure can depend on whether the landlord is setting rent for a new tenancy, reviewing an existing tenancy or resetting rent to market rent.
The RTB/ESRI Rent Index
The RTB is also an important source of information about rents in Ireland.
The RTB/ESRI Rent Index tracks rental-price developments using tenancy-registration data held by the RTB and independently analysed by the Economic and Social Research Institute (ESRI).
The index covers both new and existing private tenancies.
The RTB says the index provides the most accurate picture of average rents for new and existing private tenancies because it is based on regulatory data covering registered tenancies rather than advertised asking rents.
The index also uses a standardised approach that accounts for differences in the characteristics of properties represented in the data.
This makes it useful for examining changes in rental prices over time.
Why the RTB’s data matters
The RTB’s registration system does more than record individual tenancies.
Its Profile of the Register is described by the RTB as its most authoritative and complete source of information on the size and profile of Ireland’s rental sector.
The RTB Data Hub also provides information on:
- registered private tenancies;
- Approved Housing Body tenancies;
- cost-rental tenancies;
- student-specific accommodation;
- rent levels;
- dispute applications; and
- Notices of Termination.
This information provides insight into developments within Ireland’s rental market.
The data can also be considered alongside information from organisations such as the Central Statistics Office, ESRI and the Department of Housing when examining issues including rental affordability, housing supply and market trends.
What the RTB cannot do
The RTB is not a general housing court and does not have jurisdiction over every dispute involving a rented property.
Its powers and responsibilities are defined by residential-tenancy legislation.
Some disputes may fall outside the RTB’s jurisdiction and may need to be dealt with by another body or through the courts.
The RTB also does not provide a new home to a tenant simply because a tenancy has ended.
Its role is primarily concerned with regulation, registration, information, enforcement, data and dispute resolution within the residential rental sector.
This distinction is particularly important for tenants facing homelessness or wider housing difficulties.
The RTB may deal with a dispute about a Notice of Termination, for example, but it is not the organisation responsible for providing social housing.
Why tenants should know about the RTB
For tenants, understanding the RTB can be particularly important when a disagreement develops with a landlord.
A tenant who receives a Notice of Termination, faces a rent dispute, has difficulty recovering a deposit or believes a landlord has breached rental law may have rights that can be pursued through the RTB.
The first step should generally be to understand the issue, gather relevant documents and check the RTB’s current guidance.
Tenants should keep copies of:
- tenancy agreements;
- rent records;
- Notices of Termination;
- rent-review notices;
- emails and text messages;
- photographs;
- receipts;
- repair records; and
- other evidence relevant to the dispute.
Having a clear record can become important if the matter proceeds to mediation, adjudication or a Tribunal.
For more information, see the M10News guide What Evidence Matters in an RTB Dispute?
Why landlords should know about the RTB
The RTB is equally important for landlords.
Landlords must comply with rental legislation, register their tenancies and follow the required procedures when setting rent, reviewing rent or ending a tenancy.
A failure to comply can result in a dispute, enforcement action, a financial penalty or delays.
The RTB provides information and guidance intended to help landlords understand their obligations.
The introduction of fixed-payment notices in September 2026 has also given the RTB an additional enforcement tool for specified breaches.
A rental sector undergoing major changes
Ireland’s rental system has undergone significant changes during 2026.
National rent-control rules came into effect from 1 March 2026, changing how rents can be set and reviewed and introducing new rules for newer tenancies.
Further changes came into effect on 14 September 2026, including:
- new fixed-payment notice powers for specified rental-law breaches;
- public RTB adjudication hearings for relevant new applications;
- publication of adjudication reports;
- changes to Notice of Termination service rules;
- changes to rent-review notice procedures; and
- changes to certain RTB appeal and hearing timeframes.
For landlords and tenants, this means older information about Irish rental law may no longer apply to every tenancy.
The rules can depend on factors including when the tenancy began, the type of tenancy, the landlord’s circumstances and the issue involved.
The RTB’s wider role in Irish housing
The RTB is more than a dispute-resolution service.
Its national tenancy register, data, research, information services, enforcement functions and dispute-resolution system give it a much broader role in Ireland’s rental sector.
For tenants, the RTB provides information and a statutory route for resolving many rental disputes.
For landlords, it provides guidance on legal obligations and a formal process for resolving disputes.
For policymakers and researchers, its registration data provide important evidence about Ireland’s rental market.
The RTB’s Data Hub includes information on tenancy numbers, landlord profiles, rents, disputes and Notices of Termination, making the organisation an important source of information about the country’s rental sector.
As Ireland continues to rely heavily on rented housing, understanding the RTB’s role is increasingly important.
For landlords and tenants alike, knowing what the RTB does — and what it does not do — can help them understand their rights, responsibilities and options within Ireland’s rental housing system.
This article provides general information about the role and functions of the Residential Tenancies Board and is not legal advice. Rental laws and RTB procedures can change, and the rules applying to a particular tenancy may depend on its circumstances and start date.
