78-351 - Common open space and good site plan LAST AMENDED 2/2/2011 The provisions of this Section shall not apply to any #zoning lot# subdivided to under four acres after January 1, 1972, nor to any #large-scale residential development# for which authorization has been granted by the City Planning Commission prior to July 31, 1972. In R3-2 or R4 Districts, or in #Commercial Districts# in which #residential buildings# are governed by the #bulk# regulations of such #Residence Districts#, for any #large-scale residential development# which complies with the requirements of Section 78- 34 (Special Permit Provisions for Certain Large-scale Developments), the permitted #residential# #floor area ratio#, required #open space ratio# and density regulations for the #large-scale residential development# as a whole may be modified as set forth in this Section. At least 25 percent of the total required #open space# is to be provided in common areas meeting the requirements of Section 78-52 (Common Open Space). No portion of such common #open space# is to be used for driveways or off-street parking. The findings required in paragraph (e) of Section 78-313 (Findings) are to be satisfied. District Maximum #Floor Area Minimum #Open Space Ratio# Ratio# R3-2 .60 125.0 R4 1.00 66.5 The maximum number of #dwelling units# shall equal the total #residential # #floor area# permitted divided by the applicable factor in Section 23-20 (DENSITY REGULATIONS). In R5 Districts, or in #Commercial Districts# in which #residential buildings# are governed by the #bulk# regulations of such #Residence Districts#, at least 25 percent of the total required #open space# is to be provided in common areas that meet the requirements of Section 78-52. No portion of such common #open space# is to be used for driveways or off-street parking. All findings required in paragraph (c) of Section 78-313 are to be satisfied.