Dublin City Council has said it has no power to stop people selling on affordable housing for a profit.
Assistant Chief Executive Brendan Kenny was responding to questions about the sale of an affordable housing unit by its owners for a net profit of €100,000.
They had bought the house in Poppintree through the Ó Cualann Cohousing Alliance four years ago.
Independent councillor Noleen Reilly had asked if purchasers can be stopped from selling on for a large profit.
Under the Ó Cualann model, the housing is built on council land without a developer's fee and development fees to the council are waived.
Mr Kenny said, "we have no right to stop them selling to anybody".
He pointed out that there is a clawback which goes to paying the council back for its subsidy.
In the case of the Poppintree house, this amounted to over €57,000.
Mr Kenny said the council intended to give further sites in Ballymun to Ó Cualann.