(1) Subject to subsections (2) and (3) , the following may make an agreement with the owner of a place of historic cultural heritage significance relating to the conservation of the place:(a) the Minister;(b) . . . . . . . .(c) the relevant planning authority with the Minister's approval.(2) The Minister may only make a heritage agreement after(a) obtaining and considering the Heritage Council's advice; and(b) consulting with the relevant planning authority.(3) A planning authority may only make a heritage agreement after obtaining and considering the Heritage Council's advice.(4) A planning authority may be a party to a heritage agreement.