Developments stuck seven months in planning process
Housing developments of 101 to 200 homes are taking almost seven months to get through the planning process - more than twice the time for much larger schemes.
New figures highlight that applications for large-scale housing developments of 200 or more units are decided in 83 days on average, compared with schemes of 101 to 200 homes which take 206 days.
Figures from Construction Information Services, which collates local authority planning data, show that the vast majority of new houses in the planning process or under construction are three and four-bedroom units.
This is despite experts saying a mix of all house sizes is needed to cater for a younger, transient population and older people hoping to trade down.
In September, planning was granted for 3,428 new houses and apartments, of which 487 were one-off.
In all 52 housing developments were approved, totalling 1,508 houses and 1,389 apartments.
Of these, 581 houses were approved by An Bord Pleanála under a fast-track planning process, with the average length of time from submission to approval being 108 days.
Across the local authorities, it took an average of 83 days to decide schemes of 200 or more units. The longest average time to decide an application was for schemes of 101 to 200 homes at 206 days, followed by developments of two to 10 units at 161 days, 51 to 100 units at 169 days and 21 to 50 at 105 days.
A one-off home is typically decided in 98 days.
Just 22 one-bed homes secured planning permission in the same month - the vast bulk, 82pc, were for three and four-bed homes.
The figures also show that construction work started on 1,809 residential units in September of which 339 were one-off houses.
Of 1,114 houses under construction, 87pc or 999 were three and four-bedroom houses.
The figures highlight how a mix of homes is not being developed, despite experts warning that three and four-bed homes will not help prevent urban sprawl or provide a range of housing options in communities.
Of the 1,451 houses and apartments where work commenced in September, just 68 are one-bed (4.6pc) and 302 are two-bed (20.8pc).