The party has come under fire for the promise.
A Laois Offaly Sinn Féin TD is re-iterating his party's promise they could provide affordable homes for under €300,000.
Sinn Féin has come under fire for claims it could deliver such a scheme in the Capital.
However, Deputy Brian Stanley says their party research has found they could reduce the cost of a home under an affordable housing scheme by up to 30%.
He says there would be little regional variation:
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