TITLE THREE - ZONING DISTRICTS Chap. 1119. Districts Established. Chap. 1121. General Zoning Regulations. Chap. 1123. Low Density Residential District (R1). Chap. 1125. Medium Density Residential District (R2). Chap. 1127. High Density Residential District (R3). Chap. 1129. Single Family Dwelling Zone - Zero Lot Line (R4). Chap. 1131. Multi-Family Residential District (R5). Chap. 1132. Condominium Residential District (R6). Chap. 1133. Neighborhood Commercial District (NC). Chap. 1135. General Commercial District (GC). Chap. 1137. Manufacturing District (M1). Chap. 1139. Light Manufacturing and Office District (M2). Chap. 1141. Planned Developments. Chap. 1143. Conservation District (C1). Chap. 1145. Adult Entertainment Business.