This is more than just a Green Party plan. The proposals are contained in the revised Programme for Government document where both parties in government outline a number of possible options which they could introduce to help people who are struggling with mortgages.
They also say the following which may be referring to the US subsidy scheme that the Indo picked up on, "With reference to the measures adopted in other jurisdictions, the Government will examine ways of expanding its own mortgage -support measures".
I didn't say I agree with the proposals and obviously I accept the point that it's us as taxpayers who would ultimately pick up the tab. Whatever people think, they do appear to want to introduce something.