This chapter shall apply to the following zoning districts which are zones predominantly for residential use:
(1) 
R-SE: Suburban Estate Zone;
(2) 
R-SR: Suburban Residential Zone;
(3) 
Single-Family Residential (SFR) Zones designated as: RS-15,000; RS-9,600; RS-8,400; RS-7,200; and RS-4,000;
(4) 
RA-3600: Attached Townhouse and Duplex 3,600 Zone;
(5) 
RM-2400: Multifamily 2,400 Zone.
(Ord. 1841, 1/22/2026)
The purpose of this chapter is to adopt the process and procedures for the creation of unit lots for middle housing and accessory dwelling unit development through established subdivision procedures while generally only applying development standards to the parent site as a whole rather than to individual unit lots.
(Ord. 1841, 1/22/2026)
Requests for unit lot subdivisions shall be processed and decided upon as specified in chapter 17.05 DMMC, Short Subdivisions.
(Ord. 1841, 1/22/2026)
A unit lot subdivision creates a relationship between the parent parcel and each lot created, referred to as a "unit lot." Unit lot subdivisions shall meet all of the following standards:
(1) 
Parent Parcel. In order to be eligible for the unit lot subdivision process, the parent parcel shall meet all Title 18 DMMC standards of the applicable zone in which it is located.
(2) 
A unit lot subdivision cannot be used to permit land uses or densities that are not otherwise allowed in the zone in which the unit lot subdivision is proposed.
(3) 
Unit lots shall be subject to applicable requirements of Titles 14, 16, 17 and 18 DMMC, except as otherwise modified by this chapter.
(4) 
Unit lot(s) are not subject to Title 18 DMMC dimensional standards of the applicable zoning district but shall meet the applicable building fire separation standards, fire access, adequacy of emergency vehicle access and fire protection water system standards.
(5) 
Access. The parent parcel and each unit lot shall make adequate provisions for ingress and egress and parking, where required, which may or may not include use of common areas or easements.
(6) 
Conditions of approval may require dedication of rights-of-way but shall not require frontage improvements, unless the development of the unit lot(s) would be required under applicable codes, regulations, and design standards to make frontage improvements.
(7) 
Common Areas. Portions of the parent parcel not subdivided for unit lots shall be identified as tracts or easements and owned in common by the owners of the unit lots or by a homeowners' association comprised of the owners of the individual unit lots. Common areas shall be addressed within deed restrictions.
(Ord. 1841, 1/22/2026)
Notes shall be prominently placed on the face of the short plat to be recorded with the County to state the following:
(1) 
The title of the plat shall include the phrase "Unit Lot Subdivision."
(2) 
Approval of the development (design and layout) on each unit lot was granted by the review of the development, as a whole, on the parent lot under file #_________.
(3) 
Subsequent subdivision actions, additions, or modifications to the unit lot housing development, including all structures, may not create or increase any nonconformity of the parent lot as a whole, and shall conform to the approved unit lot housing development project or to the land use and development standards.
(4) 
If a structure or portion of a structure within the unit lot housing development project has been damaged or destroyed, any repair, reconstruction, or replacement of any structure shall comply with chapter 18.15 DMMC - Nonconforming Buildings and Uses.
(5) 
Additional development or redevelopment of the individual unit lots may be limited as a result of the application of development standards to the parent lot.
(Ord. 1841, 1/22/2026)