Plans for more than 850 state-subsidised dwellings at one of Dublin City Council’s biggest sites are due to be submitted in December.

Developer Glenveagh will seek permission for the 853 homes at Oscar Traynor Road, Santry, through a deal approved by city councillors in November 2021.

Under the agreement, 40% of the homes will be for social housing, 40% for cost-rental homes, and 20% sold to low- and middle-income workers qualifying for the affordable purchase scheme, The Irish Times reported.

The deal was approved a year after councillors rejected an earlier agreement with Glenveagh for a mix of 30% social housing, 20% affordable housing and 50% of the homes sold privately, and it comes almost eight years after the redevelopment was first put forward.

The potential development comes at a time when the city’s housing stock is failing to keep up with demand. Urban economics and demographic consultant Brian Hughes warned delegates at Bisnow’s conference on residential development on 10 November that the National Planning Framework’s strategy to limit Dublin’s growth was “self-harming Ireland’s economy”.

He called the Framework a “load of nonsense” and said the government needs to “get real and plan for expansion”.

At Santry, an application is expected to be lodged with the council in mid-December under the new large-scale residential development system, which replaced the previous strategic housing development system.

If permission is granted, work should start by the end of 2023. In total, the scheme will include 240 houses, plus 613 apartments and duplex units of up to six storeys. The first phase of 30-50 houses is expected to be completed by 2024 and the full scheme will complete at the end of 2027.

The 17-hectare site to the east of the entrance to the Dublin Port Tunnel was bought by the council in the 1980s and has been the subject of a number of unfulfilled industrial, leisure and housing schemes.