The adopted plan policies set forth in the sections beginning at EC 9.9500 shall be used when applicable for purposes of evaluating applicable adopted plan policies pertaining to subdivisions, partitions, and site review. However, in accordance with Metro Plan Policy A.9, a maximum residential density established by an adopted plan policy set forth in EC 9.9500 through EC 9.9710 may not be applied to an application proposing middle housing. For purposes of this section, a maximum residential density includes but is not limited to, a minimum lot size requirement, a limit on the number of dwelling units per acre, or another similar regulation that has the effect of limiting residential density.