Dublin City Council has told around 40 residents of a Temple Bar flat complex that they will to move out because of fire safety risk.
Residents of Crampton Buildings will have to be rehoused for two years, but say they are happy the problems will be dealt with.
Crampton Buildings, which was built in the 19th Century, is the oldest community in Temple Bar. It is mostly owned by Dublin City Council although Treasury Holdings own the ground floor commercial units and open area.
The council says most bedrooms are "inner rooms" accessible only through living rooms, which is a breach of fire safety regulations while the complex also needs upgrading to walls and new wiring and plumbing.
The council says it has secured funding of €2.9 million for the works which will take two years.
Peter Ayton of the council's Housing and Regeneration services says tenants will be given alternative accomodation in new apartments nearby in Townsend St and Bridgefoot St so neighbours can still live beside each other.
Earlier, Independent Councillor Mannix Flynn had complained about the lack of information and the fact that the problems in the flats had been left for so long.
However, after meeting with council officials, residents' spokesman Eric Mooney said they were now happy with arrangements and that they will be allowed back once the works are finished.
It is expected that residents will be given a month to move out.
