A conference on high-rise development has heard that the Dublin region will need nearly 250,000 housing units over the next eight years.
Dublin City Manager John Tierney was speaking about proposals to introduce high-rise and high density housing in parts of the city.
He said the council wants to use public transport hubs, urban centres like Rathmines and Finglas, the knowledge axis of Grangegorman and the Digital Hub and unused industrial areas like the Docklands.
He said there is a clear link between housing density and productivity, while urban sprawl is causing congestion.
DIT lecturer Conor Skehan again criticised the Government's spatial strategy, saying that there is no plan to cater for the growth that is projected to happen in the east of the country.
Mr Skehan said that two-thirds of the population will be living within 35km of the east coast by 2030.
Deputy City Council Planner John O'Hara said there have been 135 submissions on the high-rise and intensification strategy.
Developers are concerned about the lack of clarity in 30 different area plans and had offered to draw up plans themselves.
Residents and heritage groups have also made submissions and there are concerns about loss of quality with higher density.
The proposals are due to go back to councillors and face another period of public consultation with the process taking up to a further six months before any strategy is agreed.
