Over half of tenants living in rent pressure zones don't realise there are restrictions on their landlords.
A new report by the RTB found that rent in rent pressure zones would be up to 3 per cent higher if the measures hadn't been brought in.
Under the legislation, landlords can't increase rent by more than 4 per cent a year.
Director of the RTB Rosalind Carroll says tenants don't realise that the rule also applies to new tenancies.
She says, "Rent pressure zones and the cap on rents in terms of that 4% increase applies not only to existing tenancies but to a tenancy that is being re-let in the market. So lots of people get that it applies within your existing tenancy but the research found that a lot of people didn't get it at the re-let stage. That's something we had thought for a while now and the research concludes on that also."
