Jefferson City Zoning Code
CHAPTER 12
62 ACCESSORY DWELLINGS
§ 12.62.010 Purpose and intent.
The purpose and intent of allowing accessory dwelling units is to:
A.
Provide older homeowners with a means of obtaining rental income, companionship, security, and services, thereby enabling them to stay more comfortably in homes and neighborhoods they might otherwise be forced to leave.
B.
Add moderately priced rental units to the housing stock to meet the needs of smaller households and make housing units available to moderate income households who might otherwise have difficulty finding housing.
C.
Develop housing units in single-family neighborhoods that are appropriate for households at a variety of stages in their life cycle.
D.
Provide housing for persons with disabilities.
E.
Protect stability, property values, and the residential character of a neighborhood.
(Ord. 642 § 16, 2003; Ord. 709 § 2, 2018)
§ 12.62.030 Permitted in residential, agricultural and mixed use zones.
A maximum of one accessory dwelling unit is permitted per lot containing a permitted detached singlefamily dwelling in the Residential (R-1, R-2, R-3), Agricultural (F) and Mixed Use (MU-H, MU-M) Zones. The housing density standard of the zone does not apply to an accessory dwelling unit that meets all of the requirements of Chapter 12.62. Where other sections of Title 12 conflict with the provisions of Chapter 12.62, Chapter 12.62 controls.
(Ord. 642 § 16, 2003; Ord. 709 § 2, 2018)
§ 12.62.040 Accessory dwellings, review and approval.
Within the R-1, R-2, R-3, F, MU-H and MU-M Zones, review and approval for all accessory dwelling unit requests is through the building permit process. Notice and a public hearing are not required.
(Ord. 642 § 16, 2003; Ord. 709 § 2, 2018)
§ 12.62.050 Accessory dwellings, building code.
Construction of an accessory dwelling unit must comply with the provisions of the building codes, including, but not limited to, structural, electrical, plumbing and mechanical codes. Conversion of a structure not previously in residential use requires a change of occupancy inspection to ensure building code compliance.
(Ord. 642 § 16, 2003; Ord. 709 § 2, 2018)
§ 12.62.060 Use and dimensional regulations.
When the following requirements are met, the City may allow development of an accessory dwelling unit.
A.
One accessory dwelling unit shall be allowed for each detached single-family dwelling on a lot. A manufactured home meeting the requirements of Chapter 12.62, and placed on a permanent perimeter foundation is allowed as a detached accessory dwelling unit. A "tiny home" placed on a permanent perimeter foundation and constructed in accordance with the applicable building codes for single-family dwellings and Chapter 12.62 is allowed as a detached accessory dwelling unit.
B.
A new separate outside entrance serving an accessory dwelling unit shall be on the side or rear of a detached accessory dwelling unit, and on the side or rear of the primary dwelling for an attached or interior accessory dwelling unit.
C.
The maximum gross habitable floor area (GHFA) of the accessory dwelling unit shall not exceed 50% of the GHFA of the primary dwelling on the lot, or shall not exceed a maximum of 900 square feet, whichever is less. An accessory dwelling unit resulting from the conversion of a level or floor, including, but not limited to, a basement, attic, or second story, of a primary dwelling may occupy the entire level or floor.
D.
An interior, attached or detached accessory dwelling unit shall not be enlarged beyond the maximum size in subsection C, and shall not be the subject of a variance to allow such enlargement.
E.
Off-Street Parking. No on-site parking is required.
F.
An accessory dwelling unit shall not be located in a front yard.
G.
Accessory dwelling units shall not be allowed in addition to duplex dwellings.
(Ord. 642 § 16, 2003; Ord. 709 § 2, 2018; Ord. 719 § 7, 2021; Ord. 731, 5/23/2024)
§ 12.62.070 Accessory dwellings, building height and setbacks.
An accessory dwelling unit shall not exceed the height and setback standards for the zone.
(Ord. 642 § 16, 2003; Ord. 709 § 2, 2018; Ord. 719 § 8, 2021)
§ 12.62.080 Screening.
A building permit application for an accessory dwelling unit shall include a site plan showing the location of the detached primary single-unit dwelling, the location of the proposed accessory dwelling unit, and the general locations of adjoining buildings and yards. Screening is encouraged, but is not required. Where the building permit applicant will voluntarily provide screening, the non-mandatory guidelines are in Section 12.42.140.
(Ord. 642 § 16, 2003; Ord. 709 § 2, 2018)