In addition to the objectives outlined in Section 18.02.020, the open space zones are included in the zoning regulations to achieve the following purposes:
A. 
To preserve open space for the conservation of natural resources.
B. 
To maintain the natural character of the land.
C. 
To provide for public and quasi-public uses.
D. 
To conserve areas of historic and community significance for the enjoyment of future generations.
E. 
To provide for private use of land under limited development.
F. 
To promote public health and safety.
(Ord. 2004-884; Ord. 2019-1056 § 3)
This zone is intended for general agriculture, open space and public uses. Only those additional uses are permitted that are complimentary to, and can exist in harmony with open space. There is no size limitation and it is the intent that this zone may be applied to a portion of a lot provided that the remainder of the lot meets the requirements for which it is zoned.
(Ord. 2004-884; Ord. 2019-1056 § 3)
Table 18.16-6 identifies the permitted uses, and accessory uses within the open space zones. Uses in the table are permitted subject to the permit criteria referenced. Any use not included shall be considered prohibited.
Table 18.16-6
OPEN SPACE LAND USE MATRIX
Use
OS
OSR
Comments
Accessory dwelling unit
•
P
See Ch. 18.20 Art. IX
Agriculture, horticulture, grazing
P
P
Sale of produce raised on-site permitted
Agriculture experimental facility
C
•
 
Amphitheater
C
•
 
Animal hospital, large animal
C
C
See Ch. 18.20 Art. VII
Animal hospital, small animal
C
•
See Ch. 18.20 Art. VII
Animal shelter
C
•
See Ch. 18.20 Art. VII
Beehives (1-3)
P
P
 
Beehives (4 or more)
C
C
 
Caretakers quarters
A
A
 
Cemetery/mausoleum
C
C
 
Co-generation plant
C
C
 
Commercial recreation
C
C
 
Communication facility
C
C
See Ch. 18.20 Art. XI
Community care facility, large
•
C
See Ch. 18.20 Art. VIII
Community care facility, small
•
P
See Ch. 18.20 Art. VIII
Community center
C
C
 
Construction office/trailer
T
T
 
Corporation yard
C
•
 
Dwelling, single family
•
P
 
Equestrian center
C
C
 
Family day care home, large
•
C
See Ch. 18.20 Art. VIII
Family day care home, small
•
P
See Ch. 18.20 Art. VIII
Farm/ranch, commercial
P
P
 
Fruit/vegetable stand
T
T
 
Funeral home/mortuary/crematory
C
C
 
Golf course, tennis/swim club
C
C
 
Greenhouse, commercial
C
C
 
Guest House
•
A
See Ch. 18.20 Art. IX
Home occupation
•
A
See Ch. 18.20 Art. II
Kennel, commercial
C
C
See Ch. 18.20 Art. VII
Kennel, noncommercial
P
P
See Ch. 18.20 Art. VII
Library/museum, public
C
C
 
Manufactured home
•
D
See Section 18.10.100.D
Nursery, wholesale
P
P
 
Outdoor event
T
•
 
Park/recreation facility, public
C
C
 
Performing arts center
C
•
 
Public buildings/grounds
C
C
 
Public utility facility
C
C
 
Recreational court
C
C
See Ch. 18.20 Art. III
Recreational facility, private
C
C
 
Recreational vehicle parking
•
A
 
Stable, commercial
C
C
 
Wildlife preserve/sanctuary
P
P
 
Zoo
C
C
 
(A = Accessory Use; C = Conditional Use; D = Design Review; T = Temporary Use; P = Permitted Use; • = Prohibited Use)
(Ord. 2004-884; Ord. 2019-1056 § 3)
The standards in Table 18.16-7 shall apply to development within the open space zones.
Table 18.16-7
OPEN SPACE DEVELOPMENT STANDARDS
 
Standard
Zones
OS
OSR
Maximum density
0
0.2 units/acre
Minimum lot width
0
150 ft.
Front setback
0
30 ft.
Side setback
0
20 ft.
Maximum building height
35 ft./2-story1
35 ft./2-story1
Minimum dwelling size
N/A
1,500 sq. ft.
1
Whichever is less
(Ord. 2004-884; Ord. 2019-1056 § 3)
A. 
In the OSR zone, minimum lot sizes may be reduced by 30 percent provided the density of a tract does not exceed 0.2 lots per acre and no more than 25 percent of the lots in a tract are smaller than five acres.
B. 
In an open space zone, the number of permitted equine or cleft-foot animals shall conform to the requirements of Article 7 of Chapter 18.20 of this title and, further provided that no such animals are kept closer than 100 feet to an adjoining dwelling.
(Ord. 2004-884; Ord. 2019-1056 § 3)
No sign, outdoor advertising structure, or display or any character shall be permitted except as prescribed in Chapter 18.24.
(Ord. 2004-884; Ord. 2019-1056 § 3)
Wall or fences within 15 feet of property lines, within drainage courses, or across established animal traverses require City approval prior to construction.
(Ord. 2004-884; Ord. 2019-1056 § 3)
At the time an application for zoning is made or at the filing of a tentative map, the City may designate portions of the open space as accessible to the public and require appropriate easements over the property in accordance with the adopted Master Plan of Trails or another adopted specific plan.
(Ord. 2004-884; Ord. 2019-1056 § 3)