Fianna Fáil TD John Curran obtained the data from the Department of Housing and said it is "another consequence of Ireland’s housing emergency".
He continued: "Private landlords, Local Authorities and approved housing bodies all have a legal obligation to comply with the appropriate standards in rented dwellings.
"Tenants are paying extortionate rents that show no sign of abating – the very least they should expect is that their accommodation meets the basic relevant regulatory requirements in health and safety.
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"A property must be in a proper state of structural repair and adequately maintained inside and out, to be available for rent on the housing market.
"Many tenants avoid reporting or highlighting deficiencies out of fear that their tenancy could be affected as a result. There's such a severe shortage of rental properties altogether that a lot of people feel forced to put up with these shoddy standards. These poor standards are a consequence of an unacceptably highly competitive market.
"It might sound extreme but failing to put in place the essential safeguards against Carbon Monoxide or fire and smoke is effectively playing with people’s lives. It's likely to be just sheer luck that no accident and injury has happened or at least that the general public have been made aware of.
"As this housing crisis has continued we have all become aware of the desperate shortage of accommodation but this is one of the other less heard of aspects of the emergency."
