In addition to the special uses listed in section 16.16.210 of this chapter, higher dwelling unit density than fourteen (14) units per acre shall be allowed in the R-14 zone and higher dwelling unit density than twenty-nine (29) dwelling units per acre in the central business district (CBD) zone in order to provide affordable housing in these zones, with the condition that all setbacks, lot coverage and performance standards (including parking) are followed. The minimum lot size shall be waived for developments which have been approved for higher density in the R-14 zone. Higher dwelling unit density than fourteen (14) units in the R-14 and twenty-nine (29) dwelling units in the CBD zones require a special use permit, a site development plan containing the elements required in section 16.20.080 of this title, and any other information required by the code administrator. The application procedure shall follow section 16.12.040.5 of this title. To be considered an affordable housing development the project must be participating in a public affordable housing program such as the town affordable housing program, New Mexico mortgage finance authority’s low income housing tax credit program, or USDA rural housing.