These regulations apply only to residential developments or mixed-use housing developments of five or more residential units, including single-family and multi-family units, for sale or for rent. For purposes of this section, housing developments may include subdivisions, planned unit or condominium developments, the substantial remodel and conversion of an existing commercial building to residential use, the substantial remodel of an existing multi-family dwelling where the remodel would create a net of at least five residential units, qualifying mobile home parks, senior housing developments or residential developments proposed in the C-L (Limited Commercial) Zone. Qualified development projects must consist of five or more dwelling units not including units granted as a density bonus.