17-4-1 Zone districts and zoning groups established
A.   The zones and zoning groups listed in table 1 (zone districts and zoning groups summary) are established by this section.
B.   Table 1 also shows the consolidation of certain residential zoning districts into zoning groups as of the effective date of this chapter. These zoning groups combine zones that allow the same uses in the use matrix table (table 2) and the conditions per use table (table 3). In some cases, a zoning group label is used for ease of reference in table headings and cross-references (for example, "ER" in place of "R-36").
C.   Official zone map. The location and boundaries of each of the zones are shown on the official zone map of the town, and the map is a part of this code. Whenever amendments or changes are made in zone boundaries, the amendments or changes must be made by ordinance and recorded on the official zone map. The official zone map data layer maintained by and located in the office of the technology services department is the final authority in determining current zoning status.
D.   Zone districts and zoning groups summary table. The following table shows the town's zone districts and zoning groups.
Table 1. Zone districts and zoning groups summary
Table 1. Zone districts and zoning groups summary
Agricultural zone
AG
Agricultural
Ranchette residential zoning group (RA)
R-180
R-180 residential
R-144
R-144 residential
R-80
R-80 residential
Estate residential zoning group (ER)
R-36
R-36 residential
Neighborhood residential zoning group (NR)
R-16
R-16 residential
R-10
R-10 residential
R-8
R-8 residential
R-7
R-7 residential
R-6
R-6 residential
Garden residential zoning group (GR)
R-5
R-5 residential
R-4
R-4 residential
R-3
R-3 residential
Multi-family residential zoning group (MR)
MR-1
Multi-family residential (high density)
MR-2
Multi-family residential (medium density)
Commercial zones
RR
Resort and recreation
NC
Neighborhood commercial
VC
Village commercial
Industrial zones
LI
Light industrial
HI
Heavy industrial
Mixed-use zones
DMO
Downtown Marana overlay
DT
Downtown
DN
Downtown neighborhood
BU
Blended-use
Specific plan zone
SP
Specific plan