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Walnut City Zoning Code

CHAPTER 6

12 R-1 ONE-FAMILY RESIDENTIAL ZONE

§ 6.12.010 Intent and purpose.

A. 
Zone R-1 is established to provide for residential areas to be developed exclusively for one-family dwellings. In order to provide for the expansion of single-family residential development into rural areas, provisions are made for the maintenance of limited agricultural pursuits. Additional uses, necessary and incidental to single-family development, are also permitted.
B. 
All property in the R-1 Zones is presently designated with a number providing a minimum required square footage; it is the intent of this chapter that such number shall continue as the required area.

§ 6.12.020 Principal uses permitted.

Premises in Zone R-1 may be used for the following principal uses:
A. 
One-family dwelling.
B. 
Agricultural crops. (This subsection shall not be construed to permit roadside stands or signs advertising products produced on the premises.)
C. 
The grazing of cattle, goats, sheep or horses on a parcel of land having an area of not less than five acres. Maximum number permitted shall be two per acre. (This subsection shall not be construed to permit any permanent structures except the incidental fencing of the premises.)
D. 
Riding and hiking trails.
E. 
Public parks.
F. 
Day care for children, family home.
G. 
Home for the aged person, foster family.
H. 
Home for children, foster family.
I. 
Mobilehomes, certified under the National Mobile Home Construction and Safety Standards Act of 1974, on a foundation system, pursuant to Section 18551 of the Health and Safety Code in the R-1-7200 zone only.

§ 6.12.030 Accessory uses permitted.

Premises in Zone R-1 may be used for accessory uses provided such uses are established on the same lot or parcel of land, are incidental to and do not substantially alter the character of any permitted principal use, including but not limited to:
A. 
Accessory buildings or structures, including private garages or carports.
B. 
Building materials, storage of, used in the construction of a building or building project for which the owner or developer has a valid construction or grading permit, during construction and 30 days from the final completion date, provided that any lot or parcel of land so used shall be a part of the building project or on property adjacent to the construction site.
1. 
For projects of less than five dwelling units, a utility shed with a maximum dimension of 10 feet by 12 feet may be placed on the project site to be utilized for the storage of equipment and other items during the construction, for a maximum period of one year provided that the owner or developer has a valid construction or grading permit for the project. This time may be extended for cause by the City Manager.
2. 
For projects of five or more dwellings, the provisions of Section 6.08.160 shall apply.
C. 
A guesthouse or second unit housing, subject to the regulations established in Section 6.08.210.
D. 
Horses, donkeys, cattle, sheep or goats on a lot or parcel of land having an area of not less than 20,000 square feet, provided that said animals are kept or maintained for the private use of members of the family residing on the premises, but in no event more than one such animal for each 20,000 square feet of lot area, and that such animals are not kept or housed within 50 feet of any street, highway, or any building used for human habitation. However, a person shall not keep or maintain any of the following animals: Any adult male horse, adult male donkey, adult male burro, adult male cattle, adult male bovine, adult male sheep, adult male goat or adult male pony that has not been castrated.
E. 
Poultry, rabbits and other small animals of domestic noncommercial uses; provided that such poultry and animals shall not exceed 25 in number on any site having an area of 15,000 square feet or more.
F. 
Dogs, cats, rabbits and other household pets not to exceed a total of three over the age of six months. Rabbits must be kept in a secured area within the property.
G. 
Home occupation (subject to regulations established in Section 6.08.180).
H. 
Model homes erected on the same premises and used in conjunction with a new subdivision tract offered for sale for the first time, provided they are not used in conjunction with a general real estate business.
I. 
Real estate tract office, temporary, for the purpose of conducting sales of lots in the subdivision upon which such office is located, provided such office shall not be used to conduct a general real estate business. At the end of two years from construction, any use permitted in the zone where located, except that the Commission may, upon a showing of need by the owner of the property extend the permitted time for a period of not to exceed one additional year.
J. 
The Planning Director may approve the use of the model homes and/or the temporary real estate tract office to be used for the sale of homes in other subdivisions within the City by the same developer.
K. 
Antennas, towers, telecommunication facilities and their support structures pursuant to Chapter 6.88.

§ 6.12.040 Uses by conditional use permit.

Premises in zone R-1 may be used for the following purposes, provided a conditional use permit has first been obtained, pursuant to the provisions of Chapter 6.64 (Conditional Use Permits):
A. 
Churches, temples or other places used exclusively for religious worship on a parcel of land with a minimum area of one acre.
B. 
Private Recreational Clubs. Such clubs shall mean an association of persons, whether or not incorporated, organized for the primary purpose and function of providing recreational facilities to its members such as facilities for tennis, golf, swimming, racquet ball and similar activities.
C. 
Educational institutions.
D. 
Golf courses, including incidental commercial uses normal to the operation of the golf course.
E. 
Public buildings and uses.
F. 
Public utilities or utilities operated by mutual agencies.
G. 
Commercial radio or television transmitters.
H. 
Day nursery, children, when such facility is located in conjunction with subsections A, B, and C of this section, and subject to the provisions of Section 6.08.230.
I. 
Tutoring and learning centers in conjunction with subsections A, B, and C of this section, and subject to the provisions of Sections 6.08.230 and 4.12.130.

§ 6.12.050 Standards of development.

Premises in zone R-1 shall be subject to the development standards prescribed in this section.
A. 
Lot Area.
1. 
Required Area. Each lot or parcel of land in zone R-1 shall have a minimum area of not less than:
a. 
Seven thousand two hundred square feet when no number follows the zoning symbol.
b. 
Where a number follows the zoning symbol:
i. 
A gross area, including that portion, if any subject to a highway easement or other public or private easement where the owner of the servient tenement does not have the right to use the entire surface, of the number of acres shown by such number, if such number is less than 100, provided that portion of the lot or parcel of land not subject to any easement shall have an area not less than 40,000 square feet.
ii. 
A net area of the number of square feet shown by such number if such number is greater than 100.
B. 
Lot Width and Depth.
1. 
Each lot or parcel of land in Zone R-1 shall have a minimum lot width at the setback line and a depth of not less than:
Required Area (square feet)
Minimum Width Interior Lots (feet)
Minimum Width Cul-de-sac and Knuckle Curve Lots (feet)
Minimum Depth (feet)
7,200—14,999
60
50
100
15,000 and over
75
50
120
2. 
Frontage. Each lot or parcel of land shall have a street frontage of not less than 40 feet when the front property line coincides with the street line unless otherwise provided in paragraph (3), Identification or Designation of Lot Lines in Doubt.
3. 
Identification or Designation of Lot Lines in Doubt. Where the identification or designation of the front, side, or rear lot line is in doubt, as in the following situations, the Commission shall determine the identification or designation of the lot lines:
a. 
Corner lots or parcels of land with two street frontages approximately equal in length;
b. 
Through lots or parcels of land fronting on two or more streets;
c. 
Lots or parcels of land where the only contiguous boundary to a public street is provided by a driveway or other private access or where said lot or parcels of land have a street frontage of less than 35 feet.
C. 
Yards.
1. 
Front Yard. Each lot or parcel of land in Zone R-1 shall have a front yard setback as follows:
a. 
Single-family structures with less than 4,500 square feet of living area shall have a front yard of not less than 20 feet in depth, except when the access to a garage is facing the street, the minimum setback for the garage portion shall be 25 feet.
b. 
Single-family structures with 4,500 square feet or more of living area shall have a front yard setback of not less than 30 feet.
2. 
Side Yard. Each lot or parcel of land in Zone R-1 shall have side yard setbacks as follows:
a. 
Single-family structures with less than 4,500 square feet of living area shall have a side yard of five feet in width on one side and 12 feet in width on the other side. The street side of a corner lot shall have 12 feet in width.
b. 
Single-family structures with 4,500 square feet or more of living area shall have a side yard of 15 feet in width on one side and 10 feet in width on the other side. The street side of a corner lot shall have 15 feet of width.
3. 
Rear Yard. Each lot or parcel of land in Zone R-1 shall have a rear yard setback as follows:
a. 
Single-family structures with less than 4,500 square feet of living area, measured by including accessory structures and garage, shall have a rear yard of not less than 15 feet of depth. Accessory structures shall maintain the same rear yard setback as the main structure. Any portion of the structure exceeding one story in height cannot be within 25 feet of the rear property line. The one story portion of any structure may project within 10 feet of the rear property line as long as the main structure and any accessory structures do not cover more than 20% of the required rear yard setback area.
b. 
Single-family structures with 4,500 square feet or more of living area, measured by including accessory structures and garage, shall have a rear yard of not less than 30 feet. Accessory structures shall maintain the same rear yard setback as the main structure. Accessory structures may be constructed with a minimum 20-foot setback, but not to cover more than 20% of the rear yard setback area.
c. 
At least 10 feet of the rear yard setback depth, measured perpendicular from the structure, shall be a substantially flat area for pedestrian and emergency access.
d. 
Accessory structures for the housing or care of animals or for the housing of gardening equipment shall not be included in measuring the square footage of living area.
e. 
Accessory structures for the housing or care of animals or for the housing of gardening equipment, which do not exceed 500 square feet in area, may maintain a rear yard setback of not less than five feet.
4. 
Intrusion into Required Yards. In addition to the intrusions permitted into the required yard as provided in Section 6.08.100, the following structures may be erected:
a. 
Maximum height of fence or wall in required front yard setback shall be three feet. The height of the fence or wall shall be measured along the street side of the fence or wall.
b. 
Maximum height of fence or wall in the side or rear yard shall be six feet. A corner lot may have the fence or wall on the property line adjacent to the street and the height of the wall shall be measured from the level of the sidewalk or street side of the fence or wall. All other fences or walls shall be measured from the high side of the fence or wall. Where the permitted wall includes a retaining wall and the height as measured from the low side of the grade exceeds six feet in height, any portion of such fence or wall above the retaining wall shall be open-work fence. An open-work fence means a fence in which the component solid portions are evenly distributed and constitute not more than 50% of the total surface area of the fence. The provisions of this subparagraph shall not apply to fences required by state law to surround and enclose public utility installations or to chain-link fences enclosing school grounds and public playgrounds.
c. 
A roofed patio open on three sides may be constructed within the required 12 feet provided the supporting posts are maintained at a minimum distance of five feet from the side property line and that no portion of the structure is nearer than five feet from the front wall of the residence.
D. 
Building Bulk.
1. 
Height Limits. No lot or parcel of land in Zone R-1 shall have a dwelling unit in excess of two stories or 35 feet in height, nor an accessory building in excess of one story or 17 feet in height, whichever is less.
2. 
Maximum Lot Coverage. The maximum coverage of the lot of any roofed structures shall not exceed 40% of the lot building area.
3. 
Minimum Floor Area. The average floor area of all single-family dwellings in a subdivision shall be as follows:
Required Area
(square feet)
Average
(square feet)
7,200—9,999
1500
10,000—14,999
1600
15,000 and over
1700
The minimum house size for an individual building a dwelling unit, other than in a subdivision, shall be the same as the average required in a subdivision. As used herein, the average floor area shall be computed from all proposed dwellings within any approved tentative tract, or if such tentative tract is partially recorded, the floor area shall be computed from all proposed dwellings within the partial recordation. No building permit or group of building permits shall be issued to a single applicant wherein the average floor area requirements as stated herein are not met, unless a previous building permit or group of building permits within the same tract, when averaged with the permitted requested meets the average floor area required herein.
E. 
Use of Yards. Yards may be used for structures, landscaping, paving, parking, and storage as noted in Sections 6.08.080 through 6.08.140 and 6.12.050(C) except as noted in Chapter 3.36. Said items that are not otherwise allowed in the front yard shall be located behind a minimum five foot high fence/gate. Said fence/gate may be an open work fence/gate.
F. 
Impervious Surfaces/Landscaping. Walkways, parking areas, vehicular accessways and other impervious surfaces shall not collectively occupy more than 50% of the entire front yard area, as required by the Walnut Zoning Code. All other areas shall be landscaped with lawn, trees, shrubs, ground covers and other plant materials and shall be properly maintained in a neat and orderly manner. The area necessary for providing access to the garage (maximum 25 feet wide) shall not be included in the calculation of impervious surfaces. Exceptions may be granted by the Planning Commission in accordance with Chapter 6.84 of the Walnut Municipal Code relative to site plan and architectural review.
G. 
Boats, Trailers or Recreational Equipment. Any boat, trailer or recreational equipment incapable of movement under their own power may not be parked or stored in the areas from the lot line(s) abutting a street to a line parallel with the main structure.

§ 6.12.060 Off-street parking.

Each single-family residence shall have on the lot or parcel of land off-street parking facilities as set forth in Chapter 6.68.

§ 6.12.070 Signs.

Each lot or parcel of land in Zone R-1 may have such signs as prescribed in Chapter 6.92.