More than 1,500 social housing offers were refused across the country last year.
New figures show there have been at least 7,260 refusals since 2019 in 19 local authorities.
Dublin had the highest proportion of applicants declining an offer, followed by Kildare and Louth.
At least 420 people have been suspended from their waiting lists for refusing more than one offer.
On a county-wide basis, Dublin had the highest proportion - with some 3,835 refusals and 227 suspensions.
Kildare had the second highest proportion with 799 refusals and 119 suspensions, followed by Louth with 306 refusals.
Mike Allen, Director of Advocacy at Focus Ireland, has said says there are genuine reasons people refuse a property.
"The vast majority of cases where people turn down social housing, you can really understand why," he said.
"It might be they've a disabled child and there might not be public transport in the area which is adapted for disability.
"They may need family members to provide childcare so they can hang on to their job.
"You find that the reasons, in very many cases, are about people trying to find the best life for them and their family."
