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Colusa County Unincorporated
City Zoning Code

44-2.30 Residential

Zoning Classifications.

(Ord. No. 765 § 2 (Exh. A) (part))

44-2.30.10 Purpose of the Residential Zones.

(a) Rural Residential (R-R). The R-R zone is intended for areas where land ownership and parcel patterns preclude the use of land for agriculture, but the land is not appropriate for urban uses and densities due to lack of public water and/or sewer service. Allowed uses in the R-R zone include single-family housing, accessory units, crop cultivation, and small-scale agricultural activities that are not the primary use of the parcel. This designation accommodates semi-rural and rural living at average densities of one house per two to ten acres. This designation is used to preserve the attractive low-density character of the areas around or adjacent to established urban areas, such as Colusa, Williams, Arbuckle, and Maxwell and adjacent to rural community centers, such as Grimes, Princeton, and Stonyford and the partially developed nonsewered communities and settlements such as College City and Century Ranch. The rural residential designation may serve as a buffer between farmland and urban uses. The R-R zone includes R-R-2, which allows for a minimum two-acre lot size, and R-R-5, which allows for a minimum five-acre lot size.

(b) Residential Single-Family (R-1). The purpose of the R-1 zone is to allow for single-family homes and related uses in residential neighborhoods. The standards for the R-1 zone are intended to preserve and protect the character of existing neighborhoods, and to ensure that new residential neighborhoods are developed in areas containing appropriate access, topography, utilities and public services to support single-family residential living. The R-1 zone is intended to accommodate the majority of future residential growth in or adjacent to existing communities and urban centers. Residential densities may range from one to five units per acre. The R-1 zone includes R-1-6, which allows for a minimum six thousand square foot lot size, and R-1-8, which allows for a minimum eight thousand square foot lot size.

(c) Residential Two-Family (R-2). The purpose of the R-2 zone is to provide opportunities for a mix of housing types to accommodate low-to medium-density residential development in areas close to urban centers where all utilities and services are available, and where housing demand justifies a density of two families on each building lot. Residential densities may range from three to nine units per acre.

(d) Residential Multiple Family (R-3). The purpose of the R-3 zone is to provide opportunities for a mix of housing types, including apartment complexes, duplexes, and condominiums to accommodate medium-density residential development in areas of the county close to urban centers where all utilities and services are available. Residential densities may range from six to twenty units per acre.

(e) Apartment-Professional (R-4). The purpose of the R-4 zone is to provide opportunities for higher-density residential development in areas of the county close to urban centers where all utilities and services are available. Professional and business offices are also appropriate uses in the R-4 zone. Residential densities may range from twelve to twenty units per acre. (Ord. No. 765 § 2 (Exh. A) (part); Ord. No. 788 § 4)

44-2.30.20 Development Standards in the Residential Zones.

Allowed uses and associated structures shall comply with the following development standards, in addition to any other applicable requirements of this Title, unless a variance is obtained in compliance with Section 44-1.90.050. Table 44-2.30-1 identifies the minimum parcel standards and residential density standards applicable to the Residential Zones, and Table 44-2.30-2 identifies the applicable setbacks and height standards in the Residential Zones.

TABLE 44-2.30-1: DEVELOPMENT STANDARDS (PARCEL SIZE AND DENSITY) IN THE RESIDENTIAL ZONES 

Development Standards (Parcel Size and Density) – Rural Residential (R-R), Residential Single-Family (R-1), Residential Two-Family (R-2), Residential Multiple Family (R-3), Apartment-Professional (R-4)

Zoning Classifications

Minimum Parcel Size

Minimum Parcel Width

Minimum Parcel Depth

Maximum Units per Parcel

Residential Density (Units/Acre)

Minimum

Maximum

RR-2

2 ac

60 ft

100 ft

1 single-family home;

1 accessory dwelling

-

0.5 un/ac

RR-5

5 ac

60 ft

100 ft

1 single-family home; 1 accessory dwelling

-

0.2 un/ac

R-1-6

6,000 sf

50 ft

80 ft

1 single-family home; 1 accessory dwelling

1 un/ac

7.3 un/ac

R-1-8

8,000 sf

50 ft

80 ft

1 single-family home; 1 accessory dwelling

1 un/ac

5.4 un/ac

R-2

8,000 sf

40 ft

80 ft

N/A

3 un/ac

10.8 un/ac

R-3

4,000 sf

40 ft

80 ft

N/A

6 un/ac

20 un/ac

R-4

4,000 sf

35 ft

70 ft

N/A

12 un/ac

20 un/ac

TABLE 44-2.30-2: DEVELOPMENT STANDARDS (SETBACKS AND HEIGHT) IN THE RESIDENTIAL ZONES 

Development Standards (Setbacks and Height) – Rural Residential (R-R), Residential Single-Family (R-1), Residential Two-Family (R-2), Residential Multiple Family (R-3), Apartment-Professional (R-4)

 

Zoning Classifications

R-R

R-1

R-2

R-3

R-4

Special Regulations

Setbacks and Height Standards

Minimum Setbacks

Front

20 ft

20 ft

20 ft

20 ft

15 ft

 

Rear

20 ft

20 ft

15 ft

15 ft

15 ft

 

Interior Side

10 ft

6 ft

6 ft

6 ft

6 ft

 

Street Side

10 ft

8 ft

8 ft

8 ft

8 ft

 

Minimum Setbacks Accessory Structure [1]

Front

20 ft

20 ft

20 ft

20 ft

20 ft

 

Rear

5 ft

5 ft

5 ft

5 ft

5 ft

 

Interior Side

5 ft [2]

3 ft [3]

5 ft [2]

3 ft [3]

5 ft [2]

3 ft [3]

5 ft [2]

3 ft [3]

5 ft [2]

3 ft [3]

 

Street Side

10 ft

10 ft

10 ft

10 ft

10 ft

 

Maximum Structure Height

30 ft

30 ft

30 ft

40 ft

40 ft

 

Notes:

[1] Attached accessory buildings which are unenclosed and not conditioned space as per the California Building Code, used primarily for shade such as patio covers and awnings. Detached accessory buildings must be 5 feet from any building.

[2] Front 50% of lot.

[3] Rear 50% of lot.

(Ord. No. 765 § 2 (Exh. A) (part); Ord. No. 788 § 5; Ord. No. 796, § 4.)

44-2.30.30 Allowed Uses in the Residential Zones.

Table 44-2.30-3 identifies land uses allowed in the residential zones.

TABLE 44-2.30-3: ALLOWED USES IN THE RESIDENTIAL ZONES 

Permitted Uses – Rural Residential (R-R), Residential Single-Family (R-1), Residential Two-Family (R-2), Residential Multiple Family (R-3), Apartment-Professional (R-4)

P = Permitted Use

A = Administrative Permit

M = Minor Use Permit

U = Use Permit

T = Temporary Use Permit

- = Use not allowed

Zoning Classifications

R-R

R-1

R-2

R-3

R-4

Special Regulations

Agricultural and Agricultural Support Uses

Agricultural Processing, Off-Site Products

-

-

-

-

-

 

Agricultural Processing, On-Site Products

-

-

-

-

-

 

Animal Grazing

P

-

-

-

-

 

Animal Processing and Rendering

-

-

-

-

-

 

Animal Raising and Keeping, Commercial

-

-

-

-

-

 

Animal Raising and Keeping, Private

P

-

-

-

-

 

Apiaries

P

-

-

-

-

 

Accessory Structures to Primary Agricultural Use

P

-

-

-

-

 

Crop Production and Cultivation, Including Orchards and Vineyards

P

-

-

-

-

 

Dairy

-

-

-

-

-

 

Intensive Animal Operations

-

-

-

-

-

 

Nurseries and Greenhouses

M

-

-

-

-

 

Private Farm Airstrips

-

-

-

-

-

 

Stables, Commercial

U

-

-

-

-

 

Stables, Private

M

-

-

-

-

 

Visitor-Serving Agricultural Support Use

-

-

-

-

-

 

Wineries

-

-

-

-

-

 

Natural Resource Uses

Energy Generation for Off-Site Use

-

-

-

-

-

 

Energy Generation for On-Site Use

P

P

P

P

P

 

Forestry and Logging

-

-

-

-

-

 

Mining

-

-

-

-

-

 

Oil and Gas Extraction

-

-

-

-

-

 

Timber Processing

-

-

-

-

-

 

Habitat Mitigation and Management

-

-

-

-

-

 

Commercial Uses

Agricultural Product Sales, Off-Site

-

-

-

-

-

 

Agricultural Product Sales, On-Site

M

-

-

-

-

 

Agriculture Auction and Sales Yards

-

-

-

-

-

 

Agriculture Chemicals Manufacture, Distribution, Use and Storage

-

-

-

-

-

 

Animal Hospitals and Kennels

U

-

-

-

-

 

Bars, Nightclubs, and Lounges

-

-

-

-

-

 

Bed and Breakfast

M

-

-

-

-

 

Commercial Recreation, Indoor

-

-

-

-

-

 

Commercial Recreation, Outdoor

-

-

-

-

-

 

Construction, Maintenance, and Repair Services

M

-

-

-

-

 

Equipment Sales and Rental

-

-

-

-

-

 

Farm Equipment: Sale, Rental, Repair and Supplies

-

-

-

-

-

 

Farm Supply and Feed Store

-

-

-

-

-

 

Gas and Service Stations

-

-

-

-

-

 

Grocery Stores

-

-

-

-

-

 

Hotel and Motel

-

-

-

-

-

 

Hotel and Motel – Extended Stay

-

-

-

-

-

 

Duck, Hunting, and Fishing Clubs

-

-

-

-

-

 

Medical Offices and Clinics

-

-

-

-

-

 

Nursery, Retail

-

-

-

-

-

 

Offices, Professional

-

-

-

-

P

 

Personal Services

M

-

-

-

-

 

Public/Mini Storage

-

-

-

-

-

 

Recreational Vehicle Parks

U

-

-

-

-

 

Restaurant

-

-

-

-

-

 

Retail, General

-

-

-

-

-

 

Retail, Large Projects

-

-

-

-

-

 

Tasting Rooms

-

-

-

-

-

 

Vehicle Repair, Service and Maintenance

M

-

-

-

-

 

Vehicle Sales and Rental

-

-

-

-

-

 

Community and Recreational Uses

Boat Ramps and Landings

-

-

-

-

-

 

Campground

-

-

-

-

-

 

Cemeteries

-

-

-

-

-

 

Child Care Center

U

-

U

U

U

44-4.20

Clubs, Lodges, and Private Meeting Halls

-

-

-

-

-

 

Community Centers

-

-

-

-

-

 

Community Colleges and Universities

-

-

-

-

-

 

Correctional Institutions and Facilities

-

-

-

-

-

 

Cultural Institutions and Museums

-

-

-

-

-

 

Emergency Shelters

-

-

-

-

-

 

Family Day Care, Small

P

P

P

P

P

 

Family Day Care, Large

M

M

M

M

M

44-4.20

Golf Courses and Country Clubs

-

-

-

-

-

 

Group Day Care Center

U

-

-

U

U

44-4.20

Hospitals

-

-

-

-

-

 

Marinas

-

-

-

-

-

 

Off-Highway Vehicle Recreation Area

-

-

-

-

-

 

Offices, Governmental

-

-

-

-

-

 

Parks and Recreational Facilities, Public

M

M

M

M

M

 

Public Safety Facilities

-

-

-

-

-

 

Recreational Facilities, Private

-

-

-

-

-

 

Religious Facilities and Institutions

M

M

U

U

U

 

Residential Care Facility

-

-

-

U

U

44-4.30

Schools, Public and Private

U

U

U

U

U

 

Trail Head Parking or Staging Area

-

-

-

-

-

 

Residential Uses

Agricultural Worker Housing Center

-

-

-

P

P

 

Agricultural Worker Housing Unit

-

-

-

-

-

 

Caretaker Quarters

-

-

-

-

-

 

Duplex Dwelling

-

-

P

P

P

 

Live/Work Unit

-

-

-

-

P

 

Manufactured or Mobile Home

P

P

P

P

P

44-4.70

Mobile Home (Temporary)

T

T

T

T

T

44-4.80

Mobile Home Park

-

-

-

U

U

 

Multifamily Dwelling

-

-

P

P

P

 

Residential Care Home, Large

M

M

M

M

M

44-4.30

Residential Care Home, Small

P

P

P

P

P

44-4.30

Secondary Dwelling

P

P

P

P

P

 

Single-Family Home

P

P

P

P1

P1

See footnote (R-3 and R-4).

Industrial Uses

Manufacturing, General

-

-

-

-

-

 

Manufacturing, Heavy

-

-

-

-

-

 

Manufacturing, Light

-

-

-

-

-

 

Research and Development

-

-

-

-

-

 

Warehousing, Wholesaling, and Distribution

-

-

-

-

-

 

Transportation, Communication, and Utility Uses

Airport-Related Uses

-

-

-

-

-

 

Airports for Commercial Farm Services

-

-

-

-

-

 

Solid Waste Disposal Site

-

-

-

-

-

 

Composting Facilities

-

-

-

-

-

 

Sewage Disposal Site

-

-

-

-

-

 

Freight and Truck Terminals and Yards

-

-

-

-

-

 

Recycling Collection or Processing Facility, Large

-

-

-

-

-

 

Recycling Collection or Processing Facility, Small

-

-

-

-

-

 

Reverse Vending Machine

-

-

-

-

-

 

Telecommunications Facilities

-

-

-

-

-

 

Utilities, Major

U

U

U

U

U

 

Utilities, Minor

P

P

P

P

P

 

1 A single-family home in the R-3 and R-4 zones is only permitted if the single-family home is: (1) replacing an existing single-family unit on a one-for-one basis, (2) on an existing lot of eight thousand square feet or less, or (3) is part of a housing development with the majority of units affordable to extremely low, very low, and/or low-income households.

(Ord. No. 765 § 2 (Exh. A) (part); Ord. No. 788, § 6: Ord. No. 793, § 3; Ord. No. 827, § 5; Ord. No. 832, § 3; Ord. No. 839, § 2.)