Question - Affordable housing action plan [use Housing—affordable]

In relation to the announcement new homes will no longer be required to install greywater piping, (a) when does the Government intend to repeal the mandatory greywater piping requirement, (b) will there be any transitional arrangements for current development applications or building approvals that were lodged under the existing requirement; if so, what are they, (c) how will the Government communicate the timing and details of this change to industry, certifiers and prospective home builders and (d) will the change apply to renovations or extensions of existing homes, in addition to new builds.