Plans for nearly 2,500 homes in Dublin have been lodged with An Bord Pleanála over the past week.
They involve five separate developments across the county.
The largest of the proposals involves 999 apartments at North Wall Quay in Dublin city. More than half of the flats are destined for the rental market.
There are also plans for 659 apartments in nearby Sheriff Street Upper and the East Wall Road.
Towards the north of the county, plans have been lodged for 512 apartments on the Howth Road.
On the south side, there are also proposals for nearly 200 houses and apartments in Kilternan and 119 apartments in Dundrum.
Some of the applications are at consultation stage.
Others are full applications that have been lodged under the new fast-track mechanism for large developments.