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Thurston County Unincorporated
City Zoning Code

CHAPTER 20

09 - RURAL RESIDENTIAL—ONE DWELLING UNIT PER FIVE ACRES RR 1/5

20.09.010 - Purpose.

The intent of this district is to assist in maintaining the commercial timber industry and to protect the public health in areas with severe soil limitation for septic system, severely limited water supply, aquifer recharge and floodplains, and the Nisqually subarea.

(Ord. 11398 § 3 (part), 1997: Ord. 11025 § 5, 1995: Ord. 6708 § 3 (part), 1980)

20.09.020 - Primary uses.

Subject to the provisions of this title, the following uses are permitted in this district;

1.

Agriculture, including forest practices;

2.

Single-family and two-family residential (within urban growth management areas, limited to four residential dwelling units per lot; otherwise, limited to one primary residential structure per lot);

(Ord. 11804 § 47, 1998: Ord. 11398 § 3 (part), 1997: Ord. 11025 § 4, 1995: Ord. 10398 § 6, 1993: Ord. 8216 § 14, 1985; Ord. 6708 § 3 (part), 1980)

(Ord. No. 14773, § 7(Att. F), 7-24-2012)

20.09.025 - Special uses.

See Chapter 20.54 for special uses permitted in this district.

(Ord. 11398 § 3 (part), 1997: Ord. 8216 § 15, 1985)

20.09.030 - Family member unit.

1.

In addition to the maximum number of dwelling units permitted on a lot, one temporary mobile/manufactured home or modular home may be located upon a lot for the purposes of housing a person or persons who are family members to a person residing in a structure existing on the lot when application for family unit approval is requested. A person is a family member when related by blood, marriage or adoption.

2.

Persons wishing to establish a family member unit shall furnish proof of family member status and shall receive written approval to establish such unit from the department before locating or constructing the unit.

3.

Dwelling units which are located or constructed pursuant to this section shall be removed when the family member no longer occupies the family member unit.

4.

Dwelling units which are pursuant to this section shall be removed prior to sale of the property, unless the purchaser provides a letter to the county stating the family member unit will be occupied by a family member.

5.

A family member unit must have an approved sewage disposal system, adequate water source, and all other applicable permits.

(Ord. 11804 § 48, 1998; Ord. 11398 § 3 (part), 1997: Ord. 10595 § 12, 1994: Ord. 6708 § 3 (part), 1980)

(Ord. No. 14773, § 10(Att. I), 7-24-2012)

20.09.040 - Design standards.

The following standards are established as the minimum necessary to insure that the purpose of this rural residential, one unit per five acre district is achieved and maintained as new lots are created and new buildings are constructed:

1.

Minimum Lot Size:

a.

Conventional subdivision lot (net)—four acres for single-family, eight acres for duplexes;

b.

Nonresidential use—five acres;

2.

Maximum Building Height—thirty-five feet;

3.

Minimum Yard Requirements: See Section 20.07.030;

4.

Maximum Coverage by Hard Surfaces. Maximum hard surface coverage for new development in this district is as follows (also see Chapter 20.07):

a.

Lots two and one-half acres or greater: Ten percent.

b.

Lots less than two and one-half acres: Sixty percent or ten thousand square feet, whichever is less.

(Ord. 12761 § 10, 2002; Ord. 11398 § 3 (part), 1997: Ord. 10595 § 14, 1994: Ord. 6708 § 3 (part), 1980)

(Ord. No. 15355, 1(Att. A, § R), 10-18-2016)

20.09.045 - Subdivisions within the Nisqually subarea.

The subdivision of parcels twenty acres and larger which are located within the Nisqually subarea shall meet the following standards:

1.

At least seventy-five percent of the parcel shall be open space;

2.

The open space portion of the lot shall only be used for agriculture, forestry, or passive recreation with no more than twenty-five percent of this area used for stormwater facilities or sewage system drainfields;

3.

Subdivisions created under these standards shall have a twenty percent density bonus but no fractional units may be created;

4.

Lots may be as small as one-half acre provided that the sewage disposal and water supply systems are approved by the environmental health department;

5.

Lots shall also have a minimum width to length ratio of not less than one unit per four units of length (1 to 4);

6.

The minimum setback from the exterior boundary of the site shall be the same as the underlying zone; however, other setback requirements may be waived to provide design flexibility, provided individual buildings shall maintain a ten-foot separation; and

7.

The design of the subdivision shall minimize its impacts upon critical areas and resource lands.

(Ord. 11398 § 3 (part), 1997: Ord. 10595 § 15, 1994: Ord. 10199 § 6, 1992)

20.09.050 - Density.

1.

The base density for this district is a maximum of one unit per five acres, or one unit per one-one hundred twenty-eighth of a section of land; and

2.

The maximum number of dwelling units allowed shall be determined by:

a.

Subtracting from the parcel area: documented high groundwater hazard areas, wetlands twenty-two thousand square feet or more and two thousand five hundred square feet or more if adjacent to a stream or within its one-hundred-year floodplain, marine bluff hazard areas to the top of the bluff and landslide hazard areas; one-hundred-year floodplains; and submerged lands as defined in the Shoreline Master Program for the Thurston Region, as amended;

b.

Critical area buffers shall not be subtracted from the parcel for purposes of making the density calculation; and

c.

The zoning density shall be applied to the remainder of the parcel.

d.

For the purposes of calculating density, the documented area of a wetland shall not be subtracted from the parcel area if a property owner opts to develop a planned residential development as specified in Chapter 20.30 TCC.

(Ord. No. 14773, § 7(Att. F), 7-24-2012)

20.09.070 - Additional regulations.

Refer to the following chapters for provisions which may qualify or supplement the regulations presented above:

1.

Chapter 20.32, Open Space;

2.

Chapter 20.34, Accessory Uses and Structures;

3.

Chapter 20.40, Signs and Lighting;

4.

Chapter 20.44, Parking and Loading;

5.

Chapter 20.45, Landscaping and Screening.

(Ord. 11398 § 3 (part), 1997: Ord. 11025 § 6, 1995: Ord. 8216 § 18, 1985; Ord. 6708 § 3 (part), 1980)