The Cork Simon Community says the lifting of the moratorium on evictions led to a large increase in requests for help.
The eviction ban was introduced at the start of the pandemic to protect people whose livelihoods were impacted by lockdown and was lifted in April this year.
There were 395 people homeless in the city and county at the end of that month, rising to 440 in October.
Speaking to RedFM News, Paul Sheehan from the Cork Simon Community says the homeless figures have steadily been increasing since evictions resumed:
"We saw that increase slowly but steadily increase over the summer. And, you know, the most recent set of figures we have were for October, we saw a significant increase in October. In fact, the monthly figures for October, were the highest for two years. And, you know, our concern going into the winter was that that would only get worse."