The Courts Service has announced plans to overhaul the District Court in Dublin.
The service wants to centralise all criminal business in the Criminal Courts of Justice on Parkgate Street.
Under the proposals, traffic cases would be heard at Blanchardstown courthouse.
Courthouses in Swords, Dún Laoghaire, Balbriggan and Tallaght would be closed.
The Courts Service is seeking submissions and views on the proposals at email@example.com
It says the proposals would allow for the maximum utilisation of buildings and staff by concentrating business in the minimum number of office and court locations in Dublin city and county.
It says it would also optimise the facilities and capacity available within the CCJ.
The service says it has written to court user groups in Dublin who would be affected by any changes.
The proposals will be considered by the Courts Service Building Committee at the end of this month.
A final decision in relation to closing venues will be made by the Board of the Courts Service.
In a statement, the Courts Service said it fully accepted closing venues would inevitably cause inconvenience for some.
But it said the proposals would result in improved services for court users in offices and courtrooms that are fit for purpose, have facilities and support services not available at suburban venues, and enable people to conduct their business with dignity and privacy.
It said if it did not reorganise, there would be disruption to and cancellation of court sittings.
The service anticipates the new arrangements for the district court in Dublin would begin in January next year.