TABLE 6.3-3.B: EXCEPTIONS TO THE O-1, O-2, & O-3 DIMENSIONAL STANDARDS

Zone	Use	Exceptions to the Zone ’s Dimensional Standards
O-1	• Communications, limited to wireless communication towers and antennas (S) • Residential Care Services: Adult Care Service or Physical and Behavioral Health Service (S)	Lot Size (min.) = 72,000 sf Lot Coverage (max.) = 15% Nonres Use adjacent to Res Zone (min.) = 1½(H) Nonres Use adjacent to Nonres Zone (min.) = 0'
	• Cultural Use [S] • Distribution System [S] • Residential Care Services: Adult Care Service or Physical and Behavioral Health Service (S)	Lot Size (min.) = 20,000 sf Lot Coverage (max.) = 60%
	Single-family, Attached (P)	Lot Size (min.) = Equivalent to multi-family density (5,445 sf)
	Renewable Energy Production (S)	Site Area (min.) = 0 Height (max.) = 16' Nonres Use adjacent to Nonres Zone (min.) = (H)
O-2	Residential Care Services: Rehabilitation Service or Shelter Care (S)	Lot Size (min.) = 72,000 sf Lot Coverage (max.) = 15% Nonres Use adjacent to Res Zone (min.) = 1½(H) Nonres Use adjacent to Nonres Zone (min.) = 0
	• Civic Assembly (P) • Communications, limited to wireless communication towers and antennas (S) • Cultural Use (P) • Educational Use: Elementary and Secondary School (P & S) • Educational Use: Postsecondary Inst. (P) • Religious Use (P)	Lot Size (min.) = 20,000 sf Lot Coverage (max.) = 15%
	• Cultural Use (S) • Residential Care Services: Rehabilitation Service or Shelter Care (S)	Lot Size (min.) = 20,000 sf Lot Coverage (max.) = 60%
	Day Care: Child Care (P & S)	Lot Size (min.) = 14,000 sf Lot Coverage (max.) = 80%
	Day Care: Child Care (S)	Lot Size (min.) = 2.5 acres Lot Coverage (max.) = 60%
	Renewable Energy Production (S)	Height (max.) = 16' Nonres Use adjacent to Nonres Zone (min.) = (H)
	Cultural Use (P - government owned and operated only)	Lot size (min.) = 20,000 sf Lot Coverage (max.) = 15%
O-3	Family Dwelling in the Rio Nuevo District (P)	Residential Density = 17/acres Lot Size (min.) = 2,500 sf Lot Coverage (max.) = 90% Res Use adjacent to Res Zone (min.) = 1½(H) Res Use adjacent to Nonres Zone (min.) = 0
	Cemetery (P)	Lot Size (min.) = 10 acres Lot Coverage (max.) = 15% Nonres Use adjacent to Res Zone (min.) = 1½(H) Nonres Use adjacent to Nonres Zone (min.) = 0
	Communications, limited to wireless communication towers and antennas (S)	Lot Size (min.) = 72,000 sf Lot Coverage (max.) = 15% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 1½(H) Nonres Use adjacent to Nonres Zone (min.) = 0
	• Cultural Use (S) • Distribution System (S)	Lot Size (min.) = 20,000 sf Lot Coverage (max.) = 60% Height (max.) = 25'
	Day Care: Child care (2 uses with different use-specific standards)	Lot Size (min.) = 10,000 sf Lot Coverage (max.) = 50% Height (max.) = 25'
	• Civic Assembly (P) • Educational Use: Elementary and Secondary School (P & S) • Educational Use: Postsecondary Inst. (P) • Parks and Recreation (P) • Religious Use (P)	Lot Coverage (max.) = 70%
	Day Care: Child Care (S)	Lot Coverage (max.) = 60% Height (max.) = 25'
	• Administrative and Professional Office (P) • Communications (P) • Day Care: Adult Day Care (P) • Residential Care Services: Adult Care Service or Physical and Behavioral Health Service (P - 2 uses with different use-specific standards) • Medical Service - Extended Health Care, Major, or Outpatient (P) • Residential Care Services: Rehabilitation Service - children’s facility (P) • Residential Care Services: Rehabilitation Service or Shelter Care (P & S)	Nonres Use adjacent to Res Zone (min.) = 1½(H) Nonres Use adjacent to Nonres Zone (min.) = 0
	Single-family, Attached (P)	Lot Size (min.) = Equivalent to permitted density (1,980 sf)

 

Key:

Max. = Maximum permitted

Min. = Minimum requirement

P = Permitted Use

S = Special Exception Use

Uses without a “P” or “S” indicate the use is permitted within the zone

(Am. Ord. 11070, 5/14/2013; Am. Ord. 11996, 3/21/2023)

TABLE 6.3-4.A: DIMENSIONAL STANDARDS FOR THE C-1, C-2, C-3, OCR-1, & OCR-2 ZONES

Note: Several variables factor into determining a use’s required dimensional standards. See Section 6.3.2, Determining a Use’s Dimensional Standards, for further details.

Dimensional Standard	Zone
	C-1	C-2	C-3	OCR-1	OCR-2
Residential Density (maximum)	36/acre	44/acre	87/acre	N/A	N/A
Lot Size /Site Area (minimum)	0	0	0	0	0
Lot Coverage (maximum)	Res: 75%   Nonres: N/A	Res: 70%   Nonres: N/A	Res: 80%   Nonres: N/A	Res: 80%   Nonres: N/A	Res: 80%   Nonres: N/A
Height (maximum)	Res: 25'   Nonres: 30'	40'	75'	140'	300'
Perimeter Yard [Standard based on the proposed use’s adjacency to a residential or nonresidential zone or street ]
Street	Section 6.4.5.C	Section 6.4.5.C	Section 6.4.5.C	Section 6.4.5.C	Section 6.4.5.C
Res Use Res Zone	10' or ¾(H)*	10' or ¾(H)*	1½(H)	1½(H)	1½(H)
Res Use Nonres Zone	10' or ¾(H)*	10' or ¾(H)*	0	0	0
Nonres Use Res Zone	1½(H)	1½(H)	1½(H)	2(H)	2(H)
Nonres Use Nonres Zone	0	0	0	0	0

 

* The greater of the two dimensions applies

Key:

(H) = Height of the proposed exterior building wall

MF = Multifamily Development (Section 6.3.3.C)

MH = Mobile Home Dwelling (Section 6.3.3.A)

MH Park = Mobile Home Park (Section 6.3.3.B)

N/A = Not Applicable

Nonres = Nonresidential (Section 6.3.3.D or .E, whichever is applicable)

Res = Residential (Section 6.3.3.H or .I, whichever is applicable)

SF = Single-family Use (Section 6.3.3.J)

sf = square feet

= adjacent to

(Am. Ord. 11070, 5/14/2013)

TABLE 6.3-4.B: EXCEPTIONS TO THE C-1, C-2, C-3, OCR-1, & OCR-2 DIMENSIONAL STANDARDS

Zone	Use	Exceptions to the Zone ’s Dimensional Standards
C-1	Golf Course (P)	Lot Size (min.) = 30 acres Lot Coverage (max.) = 10%
	Cemetery (P)	Lot Size (min.) = 10 acres Lot Coverage (max.) = 15%
	Communications, limited to wireless communication towers and antennas (S)	Lot Size (min.) = 1 acre Lot Coverage (max.) = 20%
	Distribution System (S)	Lot Size (min.) = 20,000 sf Lot Coverage (max.) = 60% Nonres Use adjacent to Res Zone (min.) = 10' or ¾(H) Nonres Use adjacent to Nonres Zone (min.) = (H)
	Research and Product Development (P)	Lot Size (min.) = 10,000 sf Lot Coverage (max.) = 50% Nonres Use adjacent to Res Zone (min.) = 10' or ¾(H) Nonres Use adjacent to Nonres Zone (min.) = (H)
	Group Dwelling (P)	Lot Size (min.) = 7,000 sf Lot Coverage (max.) = 70% Nonres Use adjacent to Res Zone (min.) = 10' or ¾(H) Nonres Use adjacent to Nonres Zone (min.) = (H)
	•   Personal Storage (P) •   Renewable Energy Generation (P)	Height (max.) = 16' Nonres Use adjacent to Res Zone (min.) = 10' or ¾(H) Nonres Use adjacent to Nonres Zone (min.) = (H)
C-2	Golf Course (P)	Lot Size (min.) = 30 acres Lot Coverage (max.) = 10% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 2(H)
	Correctional Use: Supervision Facility (P)	Lot Size (min.) = 1 acre Lot Coverage (max.) = 20% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 2(H)
	Billboard (P)	Lot Size (min.) = 1,500 sf Height (max.) = In accordance with Chapter 3, Sign Code, of the Tucson Code
	Artisan Residence (P)	Height (max.) = 50'
	Renewable Energy Generation (P)	Height (max.) = 16'
C-3	Golf Course (P)	Lot Size (min.) = 30 acres Lot Coverage (max.) = 10% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 2(H)
	Correctional Use: Supervision Facility (P)	Lot Size (min.) = 1 acre Lot Coverage (max.) = 20% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 2(H)
	Residential Care Services: Rehabilitation Service or Shelter Care (S)	Height (max.) = 40'
	Billboard (P)	Lot Size (min.) = 1,500 Height (max.) = In accordance with Chapter 3, Sign Code, of the Tucson Code
	Group Dwelling (P)	Height (max.) = 50' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	•   Residential Care Services: Adult Care Service or Physical and Behavioral Health Service (P) •   Residential Care Services: Rehabilitation Service - children’s facilities (P) •   Residential Care Services: Rehabilitation Service or Shelter Care (P & S) •   Residential Care Services: Shelter Care - victims of domestic violence (P)	Height (max.) = 40' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	Renewable Energy Generation (P & S)	Height (max.) = 16'
OCR-1	Correctional Use: Supervision Facility (P)	Lot Size (min.) = 1 acre Lot Coverage (max.) = 20% Height (max.) = 25'
	Renewable Energy Generation (P & S)	Height (max.) = 16'
OCR-2	Correctional Use: Custodial Facility (S) Correctional Use: Supervision Facility (P)	Lot Size (min.) = 1 acre Lot Coverage (max.) = 20% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	Residential Care Services: Rehabilitation Service or Shelter Care (P)	Height (max.) = 40' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	Renewable Energy Generation (P & S)	Height (max.) = 16'

 

Key:

Max. = Maximum permitted

Min. = Minimum requirement

P = Permitted Use

S = Special Exception Use

Uses without a “P” or “S” indicate the use is permitted within the zone

(Am. Ord. 11070, 5/14/2013; Am. Ord. 11408, 11/9/2016)

TABLE 6.3-5.A: DIMENSIONAL STANDARDS FOR THE P-I, I-1, & I-2 ZONES

Note: Several variables factor into determining a use’s required dimensional standards. See Section 6.3.2, Determining a Use’s Dimensional Standards, for further details.

Dimensional Standard	Zone
	P-I	I-1	I-2
Residential Density (maximum)	N/A	N/A	1 unit for a caretaker
Lot Size /Site Area (minimum)	0	0	0
Lot Coverage (maximum)	N/A	N/A	N/A
Height (maximum)	50'	75'	140'
Perimeter Yard [Standard based on the proposed use’s adjacency to a residential or nonresidential zone or street ]
Street	Section 6.4.5.C	Section 6.4.5.C	Section 6.4.5.C
Res Use Res Zone	1½(H)	2(H)	2(H)
Res Use Nonres Zone	0	0	0
Nonres Use Res Zone	1½(H)	1½(H)	2(H)
Nonres Use Nonres Zone	0	0	0

 

Key:

(H) = Height of the proposed exterior building wall

MF = Multifamily Development (Section 6.3.3.C)

MH = Mobile Home Dwelling (Section 6.3.3.A)

MH Park = Mobile Home Park (Section 6.3.3.B)

N/A = Not Applicable

Nonres = Nonresidential (Section 6.3.3.D or .E, whichever is applicable)

Res = Residential (Section 6.3.3.H or .I, whichever is applicable)

SF = Single-family Use (Section 6.3.3.J)

sf = square feet

= adjacent to

TABLE 6.3-5.B: EXCEPTIONS TO THE P-I, I-1, & I-2 DIMENSIONAL STANDARDS

Zone	Use	Exceptions to the Zone ’s Dimensional Standards
P-I	Educational Use: Elementary and Secondary Schools (S)	Height (max.) = 75'
	Renewable Energy Generation (P)	Height (max.) = 16'
	•   Civic Assembly (P) •   Cultural Use (P) •   Educational Use, Instructional or Postsecondary Institution (P) •   Membership Organization (P) •   Postal Service (P) •   Religious Use (P) •   Alcoholic Beverage Service:    •   Excluding Large Bar (P)    •   Large Bar (S)    •   With a Microbrewery as an accessory Use (P) •   Animal Service (P) •   Entertainment:    •   Excluding Dance Halls (P)    •   Dance Hall (S) •   Food Service: Soup Kitchen (S) •   Funeral Service (P) •   Medical Service:    •   Extended Healthcare (P)    •   Major (P)    •   Outpatient, Limited to blood donor centers (S) •   Trade Service and Repair, Minor (P) •   Food and Beverage Sales:    •   Excluding Large Retail Establishments (P)    •   Large Retail Establishments (S) •   General Merchandise Sales:    •   Excluding Large Retail Establishments (P)    •   Large Retail Establishments (S)	Height (max.) = 40'
I-1	Golf Course (P)	Lot Size (min.) = 30 acres Lot Coverage (max.) = 10% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 2(H)
	Billboard (P)	Lot Size (min.) = 1,500 sf Height (max.) = In accordance with Chapter 3, Sign Code, of the Tucson Code
	Perishable Goods Manufacturing (P)	Height (max.) = 50'
	•   Residential Care Services: Rehabilitation Services or Shelter Care (P) •   Residential Care Services: Shelter Care - victims of domestic violence (P)	Height (max.) = 140' Nonres Use adjacent to Res Zone (min.) = 2(H)
	•   Alcoholic Beverage Service - Large Bar (S) •   Communications (P & S) •   Entertainment - Dance Hall (S)	Height (max.) = 300' Nonres Use adjacent to Res Zone (min.) = 2(H)
	Renewable Energy Generation	Height (max.) = 16'
I-2	Any use from the following use groups not allowed as a permitted or special exception use in any other zone or as a special exception use in the I-2 zone are permitted in the I-2 zone : •   Agricultural Use Group •   Commercial Use group •   Restricted Adult Act Use Group •   Retail Trade Use Group	Height (max.) = 40' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	Billboard (P)	Lot Size (min.) = 1,500 sf Height (max.) = In accordance with Chapter 3, Sign Code, of the Tucson Code Nonres Use adjacent to Res Zone (min.) = 1½(H)
	•   Automotive - Service and Repair (P) •   Medical Marijuana Designated Caregiver Cultivation Location (P) •   Medical Marijuana Dispensary Off-Site Cultivation Location (P) •   Medical Services - Outpatient, limited to blood donor center (S) •   Medical Marijuana Qualifying Patient Cultivation Location (P) •   Any use from the Civic Use Group not allowed as a permitted or special exception use in any other zone or as a special exception use in the I-2 zone is permitted in the I-2 zone (P)	Height (max.) = 75' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	•   Alcoholic Beverage Service - Large Bar (S) •   Communications (P & S) •   Entertainment - Dance Hall (S)	Height (max.) = 300'
	Renewable Energy Distribution (P)	Height (max.) = 16'

 

Key:

Max. = Maximum permitted

Min. = Minimum requirement

P = Permitted Use

S = Special Exception Use

Uses without a “P” or “S” indicate the use is permitted within the zone

(Am. Ord. 11201, 9/23/2014; Am. Ord. 11996, 3/21/2023)

TABLE 6.3-6.A: DIMENSIONAL STANDARDS FOR THE OS, IR, P, & RV ZONES

Note: Several variables factor into determining a use’s required dimensional standards. See Section 6.3.2, Determining a Use’s Dimensional Standards, for further details.

Dimensional Standard	Zone
	OS	IR	P	RV
Residential Density (maximum)	N/A	1/36 acres	N/A	8/acre
Lot Size /Site Area (minimum)	4,000 sf	36 acres	5,000 sf	7,000 sf
Lot Coverage (maximum)	10%	SF, MH: N/A   Nonres: 10%	N/A	70%
Height (maximum)	12'	30'	16'	16'
Perimeter Yard [Standard based on the proposed use’s adjacency to a residential or nonresidential zone or street ]
Street	Section 6.4.5.C	Section 6.4.5.C	Section 6.4.5.C	Section 6.4.5.C
Res Use Res. Zone	4(H)	25'	6' or 2/3(H)*	10' or ¾(H)*
Res Use Nonres. Zone	0	(H)	6' or 2/3(H)*	10' or ¾(H)*
Nonres Use Res Zone	4(H)	4(H)	6' or 2/3(H)*	10' or ¾(H)*
Nonres Use Nonres Zone	0	0	6' or 2/3(H)*	10' or ¾(H) *

 

* The greater of the two dimensions applies

Key:

(H) = Height of the proposed exterior building wall

MF = Multifamily Development (Section 6.3.3.C)

MH = Mobile Home Dwelling (Section 6.3.3.A)

MH Park = Mobile Home Park (Section 6.3.3.B)

N/A = Not Applicable

Nonres = Nonresidential (Section 6.3.3.D or .E, whichever is applicable)

Res = Residential (Section 6.3.3.H or .I, whichever is applicable)

SF = Single-family Use (Section 6.3.3.J)

sf = square feet

= adjacent to

(Am. Ord. 11070, 5/14/2013)

TABLE 6.3-6.B: EXCEPTIONS TO THE OS, IR, P, & RV DIMENSIONAL STANDARDS

 

Zone	Use	Exceptions to the Zone ’s Dimensional Standards
IR	Renewable Energy Distribution (P)	Site Area (min.) = 0 Lot Coverage (max.) = N/A Height (max.) = 16'

 

Key:

Max. = Maximum permitted

Min. = Minimum requirement

TABLE 6.3-7.A: DIMENSIONAL STANDARDS FOR THE NC, RVC, & MU ZONES

Note: Several variables factor into determining a use’s required dimensional standards. See Section 6.3.2, Determining a Use’s Dimensional Standards, for further details.

Dimensional Standard	Zones
	NC	RVC	MU
Residential Density (maximum)	8/acre	N/A	SF: 1/7,000 sf MF: 15/acre
Lot Size /Site Area (minimum)	Res: 7,000 sf Nonres: 10,000 sf	N/A	SF: 7,000 sf MF: 5,000 sf Nonres: N/A
Lot Coverage (maximum)	Res: 70% Nonres: N/A	N/A	SF: 70% MF: 75% Nonres: N/A
Height (maximum)	16'	30'	Res: 25' Nonres: 30'
Perimeter Yard [Standard based on the proposed use’s adjacency to a residential or nonresidential zone or street ]
Street	Section 6.4.5.C	Section 6.4.5.C	Section 6.4.5.C
Res Use Res. Zone	10' or ¾(H)*	1½(H)	10' or ¾(H)*
Res Use Nonres Zone	10' or ¾(H)*	0	10' or ¾(H)*
Nonres Use Res Zone	10' or ¾(H)*	1½(H)	1½(H)
Nonres Use Nonres Zone	10' or ¾(H)*	0	0

 

* The greater of the two dimensions applies

Key:

(H) = Height of the proposed exterior building wall

MF = Multifamily Development (Section 6.3.3.C)

MH = Mobile Home Dwelling (Section 6.3.3.A)

MH Park = Mobile Home Park (Section 6.3.3.B)

N/A = Not Applicable

Nonres = Nonresidential (Section 6.3.3.D or .E, whichever is applicable)

Res = Residential (Section 6.3.3.H or .I, whichever is applicable)

SF = Single-family Use (Section 6.3.3.J)

sf = square feet

= adjacent to

(Am. Ord. 11070, 5/14/2013)

TABLE 6.3-7.B: EXCEPTIONS TO THE NC, RVC, & MU DIMENSIONAL STANDARDS

Zone	Use	Exceptions to the Zone ’s Dimensional Standards
NC	Communications, limited to wireless to communication towers and antennas (S)	Lot Size (min.) = 72,000 sf Lot Coverage (max.) = 15% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 2(H) Nonres Use adjacent to Nonres Zone (min.) = 0
	•   Distribution system (S) •   Educational Uses: Elementary and Secondary Schools (P & S)	Lot Size (min.) = 20,000 sf Lot Coverage (max.) = 15% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 10' or 3/4 (H) Nonres Use adjacent to Nonres Zone (min.) = (H)
	Artisan Residence (P)	Lot Size (min.) = 0 Height (max.) = 50' Nonres Use adjacent to Res Zone (min.) = 1½(H) Nonres Use adjacent to Nonres Zone (min.) = 0
RVC	Communications, limited to wireless to communication towers and antennas (S)	Lot Size (min.) = 1 acre Lot Coverage (max.) = 20% Height (max.) = 25' Res Use adjacent to Res Zone (min.) = 2(H) Nonres Use adjacent to Res Zone (min.) = 2(H)
	Distribution System (S)	Lot Size (min.) = 20,000 sf Lot Coverage (max.) = 60% Height (max.) = 25' Res Use adjacent to Res Zone (min.) = 10' or ¾(H) Res Use adjacent to Nonres Zone (min.) = (H) Nonres Use adjacent to Res Zone (min.) = 10' or ¾(H) Nonres Use adjacent to Nonres Zone (min.) = (H)
MU	Animal Production, limited to commercial stables (P)	Lot Size (min.) = 10 acres Lot Coverage (max.) = 10% Nonres Use adjacent to Res Zone (min.) = 1½(H)
	•   Medical Service - Extended Health Care (P) •   Medical Service - Major (P)	Lot Size (min.) = 10 acres Lot Coverage (max.) = 10% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	•   Correctional Use - Custodial Facility (S) •   Correctional Use - Supervision Facility (P)	Lot Size (min.) = 1 acre Lot Coverage (max.) = 20% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 1½(H)
	Animal Production (P)	Lot Size (min.) = 36,000 sf Lot Coverage (max.) = 15% Nonres Use adjacent to Res Zone (min.) = 2(H)
	Group Dwelling (P)	Lot Size (min.) = 7,000 sf Lot Coverage (max.) = 70% Height (max.) = 25' Nonres Use adjacent to Res Zone (min.) = 10' or ¾(H) Nonres Use adjacent to Nonres Zone (min.) = (H)
	Medical Services, Outpatient (P)	Lot Size (min.) = 180,000 sf Lot Coverage (max.) = 20% Nonres Use adjacent to Res Zone (min.) = 1½(H)
	Billboard (S)	Lot Size (min.) = 1,500 sf
	•   Parking (S) •   Renewable Energy Generation (P & S)	Height (max.) = 16' Nonres Use adjacent to Res Zone (min.) = 10' or ¾(H) Nonres Use adjacent to Nonres Zone (min.) = (H)

 

Key:

Max. = Maximum permitted

Min. = Minimum requirement

P = Permitted Use

S = Special Exception Use

Uses without a “P” or “S” indicate the use is permitted within the zone

6.4. RULES OF MEASUREMENT AND EXCEPTIONS TO DIMENSIONAL STANDARDS