The following uses are permitted outright in the R-1 zone:
A. 
Single-family dwelling.
B. 
Manufactured home on an individual lot, subject to standards of Chapter 18.100 RMC.
C. 
Accessory buildings incidental to the primary residential use.
D. 
Agricultural or horticultural uses. No poultry or livestock, other than household pets, shall be permitted within 100 feet of any residence on an adjacent lot.
E. 
Home occupation which meets the restrictions of Chapter 18.90 RMC.
F. 
Residential care facility.
G. 
Residential home.
H. 
Attached accessory dwelling units.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998; Ord. 1091 § 7, 2023; Ord. 1095 § 2, 2024)
The following uses are permitted in the R-1 zone when a conditional use permit is approved subject to Chapter 18.130 RMC:
A. 
Two-family dwelling.
B. 
Public use.
C. 
Semipublic use.
D. 
Home occupation which does not meet the restrictions of Chapter 18.90 RMC.
E. 
Detached accessory dwelling units.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998; Ord. 1095 § 2, 2024)
New parcels created in the R-1 zone shall be connected to city water and sewer facilities. The following minimum lot sizes and lot dimensions apply to the creation of new parcels:
A. 
The minimum lot size shall be 10,000 square feet for a single-family dwelling and 15,000 square feet for a two-family dwelling.
B. 
The minimum average lot width shall be 70 feet.
C. 
The minimum average lot depth shall be 90 feet.
D. 
The minimum average lot frontage shall be 30 feet.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998)
A. 
The minimum front yard shall be 20 feet.
B. 
The minimum side yard shall be 10 feet, except that the minimum side yard on the street side of a corner lot shall be 20 feet.
C. 
The minimum rear yard shall be 20 feet.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998)
Buildings in the R-1 zone shall not exceed a height of 35 feet or two and one-half stories, whichever is less.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998)
The lot coverage shall not exceed 40 percent of the total area of the lot.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998)
A. 
If attached to the main building or separated by a breezeway, the accessory building shall be subject to the same side and front yard setbacks of the main building.
B. 
A one-story accessory building may be located adjacent to a side lot line not fronting on a street, when in compliance with the building code.
C. 
A one-story accessory building shall have a minimum setback of five feet from the rear property line.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998)
Where a lot of record has an area of less than 10,000 square feet, and was held under separate ownership or was on public record at the time the ordinance codified in this title became effective, such lot may be occupied by a single-family dwelling. In no case, however, shall a dwelling unit have a lot area of less than 3,000 square feet.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998)
When a lot is created in the R-1 zone which is 20,000 square feet or larger, a redivision plan shall be submitted showing that the lot can be later divided into 10,000-square-foot lots. The plan shall be reviewed and determined by planning and public works as a Type I decision.
(Ord. 974 § 4 (Exh. A.2 § 3.2), 1998)