Emergency accommodation is to be provided for 100 single people and 24 families in Dublin before Christmas.
The Peter McVerry Trust says the new accommodation represents the "single largest phase of new provision" it has provided.
The new services are located Dublin city, Fingal and Dun Laoghaire-Rathdown.
Pat Doyle is CEO of Peter McVerry Trust: "Our goal has always been to do whatever we can to respond to the need that exists.
"The unfortunate reality is that the number of people in homelessness continues to grow and as a result we need to secure significant increases in emergency accommodation provision."
"The delivery of 100 extra spaces for single adults as well as new accommodation for 24 families at this time of year is an enormous challenge not only to secure the buildings but to ensure we have the staff resources to deliver the appropriate levels of support."
The vast majority will be from new services, with a small number from expanding one of its city centre hostels.
Peter McVerry Trust said it's worked closely with the DRHE, local authorities and the Department of Housing to secure the new services.