Jefferson City Zoning Code
CHAPTER 12
20 RESIDENTIAL R DISTRICT STANDARDS
§ 12.20.010 Residential standards.
Residential uses shall be in conformance with the provisions outlined in this chapter.
(DC § 6.020)
§ 12.20.020 Lot area.
The minimum lot areas within the residential districts shall be as follows:
A.
Single-family dwellings: 6,000 square feet;
B.
Duplex dwellings: 6,000 square feet;
C.
Three-family dwellings: 10,000 square feet;
D.
Four-family dwellings: 12,000 square feet;
E.
Five to 20 units: 2,000 square feet per unit plus 4,000 square feet;
F.
Twenty to 37 units: 1,750 square feet per unit plus 9,250 square feet;
G.
Thirty-eight to 63 units: 1,500 square feet per unit plus 18,500 square feet;
H.
Over 63 units: 1,500 square feet per unit plus 50,000 square feet;
I.
Single room occupancy (SRO): 6,000 square feet per SRO that provides a maximum of six units (rooms) that surround a core kitchen area. In the R-3 and MU zones, minimum lot area is 2,000 square feet per SRO that provides a maximum of six units that surround a core kitchen.
(DC § 6.020(A); Ord. 731, 5/23/2024)
§ 12.20.030 Lot dimensions.
A.
The minimum average lot width for a single-family dwelling, manufactured home on individual lot or duplex dwelling shall be 60 feet, except along the bulb of a cul-de-sac where the minimum width shall be 70 feet at the building line.
B.
For permitted multifamily residences, the minimum average lot width shall be 75 feet. The minimum lot frontage shall be 25 feet on a public street.
C.
On cul-de-sac bulbs the frontage shall be measured at the chord distance of the arc of the bulb.
D.
The minimum lot depth shall be 80 feet. No lot shall be dimensioned to contain part of an existing street. Lot depth shall not exceed two and one-half times the average lot width.
(DC § 6.020(B); Ord. 731, 5/23/2024)
§ 12.20.040 Setback/yard requirements.
Within the residential zone the following setbacks shall apply:
A.
The minimum front yard setback in a residential zone shall be 15 feet from the property line provided that a minimum of 20 feet shall be maintained in front of any garage to allow for adequate parking. All corner lots shall be considered as having two front yards. See "lot line, front" definition, Section 12.04.080.
B.
The minimum rear yard setback in a residential zone shall be 20 feet for a dwelling and five feet for an accessory building from the rear lot line.
C.
The side setback in a residential zone shall be a minimum of five feet; however any point of a building exceeding 15 feet in height must have a setback from a side property line equal to or greater than one-third the height of that point. The height shall be measured from grade level adjacent to the building wall which is closest to the side property line.
D.
Where permitted, multifamily structures or more than two separate dwelling units which are grouped as one project on a tract of land, the minimum distance between two buildings at any point shall not be less than the sum of the required side yards computed separately for each building. Also, each multi-family development shall provide at least one continuous common use open space for all the occupants. Such open space shall be at least 1,000 square feet in area for the first five units, plus 150 square feet for each additional unit over five. This common area shall be no less than 30 feet in any dimension, and there shall be no parking allowed within this open space.
E.
When a residential building is sited within 28 feet of street right-of-way, the building shall contain entrances, directly accessible from the street, to individual units, clusters of units or common interior alleys.
(DC § 6.020(C); Ord. 573 § 1, 1997; Ord. 576 § 1, 1997; Ord. 582 § 2, 1998; Ord. 583 § 1, 1998; Ord. 614 § 4, 2000; Ord. 633 § 1, 2002)
§ 12.20.050 Open space requirements.
The following standards shall be applied to all multiple-family dwellings placed in any residential zoned district within the City:
A.
General Open Space. Open space shall be provided in all newly constructed multiple- family developments. Exclusive of required yards, a minimum 15% of gross site area shall be designated and permanently reserved as open space.
B.
Common Open Space. Each multifamily development shall provide at least one continuous common use open space for all the occupants. Common open space shall be at least 500 square feet in area with no horizontal dimension less than 20 feet.
1.
Multiple-family development must designate 250 square feet of children's play or adult recreation area for every 20 units or increment of 20 provided. No horizontal dimension shall be less than 15 feet.
2.
Placement of children's play areas and adult recreation areas shall not be allowed in any required or buffer yard or parking space.
C.
Private Open Space. All private open space shall be directly accessible from the dwelling unit through a doorway. In all newly constructed multiple-family developments:
1.
Dwellings located at finished grade, or within five feet of finished grade, shall provide a minimum of 96 square feet of private open space per dwelling unit, with no dimension less than six feet;
2.
Dwellings located more than five feet from the finished grade shall provide a minimum of 48 square feet of private open space per dwelling unit, with no dimension less than six feet.
 |
(DC § 6.020(D); Ord. 582 § 3, 1998)
§ 12.20.055 Purpose and intent of residential design standards.
The purpose and intent of the residential design standards in Sections 12.20.055 through 12.20.080 is to:
A.
Protect and enhance the community livability, character, welfare, health, and safety.
B.
Enhance the environmental, aesthetic and visual quality of the City.
C.
Safeguard the economic value of public and private investments.
D.
Encourage new development to be architecturally and aesthetically compatible with the community.
(Ord. 633 § 2, 2002)
§ 12.20.060 Residential design standards.
The following standards shall be applied to all single-family dwellings, manufactured homes on individual lots and duplex dwellings placed in any residentially zoned district within the City:
A.
All units shall utilize at least three of the following design features to the street-facing building façade:
1.
Dormers;
2.
Gables;
3.
Bay or bow windows;
4.
Off-sets on building face of at least 16 inches in depth and six feet in length;
5.
Window shutters;
6.
Roof pitch greater than or equal to nominal 6:12;
7.
Architectural grade laminated shingles, cedar shakes or shingles, tile, slate, or copper (not including standard three-tab asphalt shingles);
8.
Horizontal lap siding;
9.
Garage set at least 10 feet behind the front face of the primary dwelling unit;
10.
Architectural or decorative pillars (not including simple 4x4 posts);
11.
Brickwork or masonry.
B.
All dwellings on individual lots in any residential district (R zone) shall:
1.
Have a garage or carport with the exterior material (including siding and roofing) matching the dwelling. A garage (rather than a carport) shall be required if there are garages with existing dwellings on six out of the nine residential lots with front lot lines closest to the new dwelling;
2.
Have eaves (minimum six inches projection);
3.
Have a covered porch to a facade that faces a street or a recessed (minimum 16 inches) entry roof.
(DC § 6.020(E); Ord. 582 § 4, 1998; Ord. 633 § 3, 2002; Ord. 731, 5/23/2024)
§ 12.20.070 Windows and main entrance doors to street-facing facades.
At least 12% of the area of each facade that faces a street lot line must be windows or main entrance doors. Windows in garage doors do not count toward meeting this standard, but windows in garage walls do count toward meeting this standard. To count toward meeting this standard, a door must be at the main entrance and facing a street lot line. For a corner lot, only one side of the dwelling must meet this standard.
(Ord. 633 § 4, 2002; Ord. 731, 5/23/2024)
§ 12.20.080 Main entrances.
At least one main entrance for each structure must be within eight feet of the longest street-facing wall of the dwelling unit and shall meet one of the following:
A.
Face the street; or
B.
Be at an angle of up to 45 degrees from the street; or
C.
Open onto a porch or breezeway that meets the following requirements:
1.
Be at least 25 square feet in area;
2.
Have at least one access facing the street; and
3.
Have a roof that is no more than 12 feet above the floor and at least 30% solid. This standard may be met by having 30% of the area covered with a solid roof, or by having the entire area covered with a trellis or other open material if no more than 70% of the area of the material is open.
(Ord. 633 § 5, 2002; Ord. 731, 5/23/2024)