Almost 500 'improvement letters' have been issued to landlords who are now obliged to carry out necessary renovations.
The letters are part of a major new initiative being rolled out by Dublin City Council in a bid to improve the living standards of city residents.
Two northside locations -- the North Circular Road and Cabra Park -- have initially been targeted as part of the 'Intensified Inspection Programme'.
More than 100 buildings were inspected on the North Circular Road with officials deeming 80pc of the dwellings to be in need of improvement.
Documents obtained by the Herald reveal that on top of the improvement letters issued, a further 116 improvement notices have been sent out.
Council bosses hope that their actions will ensure that landlords make the necessary improvements to dwellings in the city.
A total of 81 landlords have been given "specific advice" in relation to the properties they let out, the documents state.
Landlords who receive these instructions are required to make the necessary changes to the dwellings by the end of 2013.
The key areas targeted as part of the crackdown include fire safety, refuse safety and electricity and gas.
Inspectors also target deficiencies in areas such as ventilation and lighting. Landlords who do not fully comply with the improvement letters and notices face the prospect of a prohibition order and may even face prosecution.
Independent councillor for the North Inner City, Nial Ring said that the scheme would boost the living standards of city residents.
"This really is a case of the council getting tough on slum landlords which is badly needed in parts of the city, he told the Herald.