17.06.010   Establishment of zone names.
   A.   In order to classify, regulate, restrict and segregate the uses of land and buildings, to regulate and restrict the height and bulk of buildings and to regulate the area of yards and other open spaces about buildings, and to regulate the density of population, several classes of zones are established to be known as follows:
   1.   Agricultural zone, abbreviated as A;
   2.   Single-family residential zone – 20,000 square foot minimum site area, abbreviated as R-1-20;
   3.   Single-family residential zone – 12,500 square foot minimum site area, abbreviated as R-1-12.5;
   4.   Single-family residential zone – 5,000 square foot minimum site area, abbreviated as R-1-5;
   5.   Multi-family residential zone – 3,000 square foot minimum site area, abbreviated as R-M-2;
   6.   Multi-family residential zone – 1,200 square foot minimum site area, abbreviated as R-M-3;
   7.   Neighborhood commercial zone, abbreviated as C-N;
   8.   Regional commercial zone, abbreviated as C-R;
   9.   Service commercial zone, abbreviated as C-S;
   10.   Mixed use commercial zone, abbreviated as C-MU;
   11.   Mixed used downtown zone, abbreviated as D-MU;
   12.   Professional/administrative office zone, abbreviated as O-PA;
   13.   Office conversion zone, abbreviated as O-C;
   14.   Business research park zone, abbreviated as BRP;
   15.   Light industrial zone, abbreviated as I-L;
   16.   Industrial zone, abbreviated as I;
   17.   Airport zone, abbreviated as AP;
   18.   Quasi-public zone, abbreviated as QP;
   19.   Open space zone, abbreviated as OS.
   B.   The R-1-20, R-1-12.5, and R-1-5 zones may be collectively identified as Single-family Residential zones, and abbreviated as R-1.
   C.   The R-M-2 and R-M-3 zones may be collectively identified as Multi-family Residential zones, and abbreviated as R-M. (Ord. 2017-01 (part), 2017: prior code § 7226)