A Junior Minister is writing to councillors to try and block the Housing Minister's plans for the redevelopment of what was one of the most disadvantaged areas in the country.
Catherine Byrne has publicly clashed with Eoghan Murphy over the proposal to build 470 homes on the former St Michael's Estate in Inchicore.
Back in July, the embattled Housing Minister revealed the development would include some social housing with the remainder rented out to people at affordable prices, under the country's first cost-rental scheme.
"We can allow people to afford to be able to rent in their own communities, but we can also protect them from the very dramatic ups and downs of the market", he said.
But Minister for Health Promotion, Catherin Byrne, is unhappy with the ratio of rented homes to permanent ones.
"There's over 70% proposed for the site and I don't think cost-rental will bring stability here. People are very much in favour of having affordable housing the site that people can buy into, settle down and rear children."