The purpose of the RM zone is to provide areas in the city for high-density residential development.

Permitted uses in the RM zone are as follows:

1. Single-family dwellings, attached or detached;
2. Accessory buildings customary to multi-family and single-family residential buildings; and
3. Home occupations.

Conditional uses in the RM zone are as follows:

1. Bed and breakfast;
2. Churches;
3. Day care/pre-school, as allowed by the applicable accessory regulations in Chapter 19.76, “Supplementary and Qualifying Regulations”;
4. Dwelling group, provided that;
   1. The parcel of ground on which the dwelling group (as defined in Chapter 19.04, “Definitions”) is to be erected shall have an area equal to the aggregate of the minimum lot areas otherwise required in the zone for the number of individual dwelling structures in the group.
   2. The distance between principal buildings shall be equal to the total side yards required in the zone. The distance between principal buildings and the nearest perimeter lot line shall be at least 15 feet. The distance between any building and a public street shall be at least the front yard required in the zoning district, except on corner lots the side yard which faces on a public street shall be at least 20 feet.
   3. Access shall be provided by a private street or right-of-way from a public street; such private street or right-of-way shall be at least 20 feet wide for one or two rear dwelling units and at least 30 feet wide for three or more dwelling units.
   4. A minimum of two parking spaces shall be provided for each dwelling unit. Parking spaces and vehicular maneuvering areas shall meet city standards.
   5. Every dwelling structure in the dwelling group shall be within 60 feet of an access roadway or drive.
   6. The development plan shall provide a buffer landscaped area along all property lines and decorative landscaping adjacent to the buildings in appropriate locations. Solid visual fences shall be provided along all interior property lines unless the planning commission approves otherwise.
5. Golf course;
6. Hospital;
7. Hotel;
8. Lodging house;
9. Multiple unit dwellings, either apartments or condominiums;
10. Nursing home;
11. Offices, professions and general business;
12. Planned unit development;
13. Private parks and recreational grounds;
14. Public and quasi-public use;
15. Radio and/or television tower;
16. Temporary structures, as allowed by the applicable accessory regulations in Chapter 19.76, “Supplementary and Qualifying Regulations”;
17. Two-family dwellings;
18. Utility stations and lines, as allowed by the applicable accessory regulations in Chapter 19.76, “Supplementary and Qualifying Regulations”; and
19. Public schools.

The minimum lot size in the RM zone is 10,000 square feet for each single-family or two-family dwelling, with 2,000 extra square feet for each additional unit in a building with more than one unit.

The minimum lot width in the RM zone is 65 feet measured 30 feet from the front lot line.

1. Setbacks/yard requirements are intended to provide a description of the required space between buildings and property lines. Primary buildings shall maintain a minimum distance from property lines as follows: Front: 30 feet. Sides: On interior lots, a total of at least 25 feet between the two side yards, with no side yard of less than ten feet. On corner lots, at least 30 feet on the street side and at least 10 feet on the interior side. Rear: 30 feet.
2. Accessory buildings in the RM zone shall maintain a minimum distance from property lines as follows: Front: Accessory buildings, excluding garages, shall maintain a setback of at least six feet from primary buildings in the rear yard for the particular property. Sides: Five feet, excluding garages, on interior lots; 20 feet on street side of corner lots. Rear: Five feet, excluding garages, on interior lots; 20 feet on corner lots. Attached garages shall conform to the rear yard requirements of main buildings. Detached garages shall conform to the rear yard requirements of accessory buildings, provided that the garage is in the rear yard and at least six feet away from the main building. Garages: The minimum side yard for a private garage shall be eight feet, except that private garages and other accessory buildings located in the rear yard and at least six feet away from the primary building shall maintain a minimum side yard of not less than five feet.

1. For uses where the slope of the original ground surface is greater than 15%, or if a slope stability hazard is present on site, the maximum structure height shall be 30 feet.
2. All other properties shall maintain a maximum structure height of 35 feet.
3. Accessory Buildings.
   
   No accessory building shall exceed 20 feet in height. For each foot of height over 14 feet, accessory buildings shall be set back from property lines an additional foot from the minimum setback to allow a maximum height of 20 feet.

The maximum lot coverage in the RM zone is 50%, including all structures, except portions of those properties also located in the Sensitive Lands Overlay Zone, for which the maximum lot coverage shall be 30% including all structures and impervious surfaces.

The minimum open space requirement for developments over two acres in the RM zone is 15%.

Any development of land in the RM zone shall be subject to the requirements of a master development plan approved by the planning commission.