An NGO representing people in local authority housing has said tenants' health is being put at risk due to poor living standards.
The Community Action Network said condensation and damp in social housing has led to serious illness among its members.
It says Dublin City Council received 1,500 complaints on the issue in 2015, with 97% of them rejected.
Spokesperson Cecilia Forrestal outlined the case of one woman who was given a flat after being homeless for a number of years, saying: "Within a couple of months of arriving in the flat, she noticed there was a lot of condensation and mould growth.
"Within a couple of months, her children began to be ill. Now two years later she has a two-year-old who has been hospitalised a few times and just recently had bronchial pneumonia. She herself has had pleurisy."