The purpose of the RR-1-43 zone is to provide areas in the city for low-density rural residential development, at a rate of one unit per acre, together with limited agricultural uses.

Permitted uses in the RR-1-43 zone are as follows:

1. Single-family detached dwellings;
2. Accessory uses and buildings customarily incidental to permitted uses; and
3. Agriculture, farm, and farm animals, subject to the restriction of the accessory regulations of this code.

Conditional uses in the RR-1-43 zone are as follows:

1. Fruit and/or vegetable stand, provided that the products are produced on the premises;
2. Nursing home;
3. Planned unit development;
4. Public and quasi-public uses;
5. Residential health care facility for up to five residents on streets less than 80 feet in width, and up to ten residents on street 80 feet and wider, excluding the facility operator and his/her related family with a maximum of one nonresident part-time relief employee on the premises at any one time unless additional staffing is required by the state department of health, which use shall not change the residential appearance and character of the property;
6. Sportsman’s kennel for personal, non-commercial use;
7. Home occupations; and
8. Churches and private non-profit recreational grounds associated with that use.

The minimum lot size for any use in the RR-1-43 zone is 43,560 square feet. Upon the director’s recommendation, the planning commission may require that certain uses, other than single-family residential, maintain a larger minimum lot size.

The minimum width of any lot in the RR-1-43 zone shall be 100 feet, measured at the front setback of the home.

In RR-1-43 zone, the minimum depth of the front yard for the primary building and for detached garages which have a minimum side yard of eight feet shall be 30 feet, or the average of the existing buildings where 50% or more of the frontage is developed, provided that in no case shall the depth of the front yard be less than 20 feet, or be required to be more than 30 feet. All accessory buildings, other than detached garages which have a side yard of at least eight feet, shall be located at least six feet in the rear of the primary building.

In the RR-1-43 zone:

1. The minimum side yard for the primary building shall be ten feet, and the total width of the two required side yards shall be not less than 20 feet.
2. The minimum side yard for a detached garage shall be eight feet, except that detached 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.
3. On corner lots, the side yard which faces on a street for both primary and accessory buildings shall be not less than 20 feet, or the average of existing buildings where 50% or more of the frontage is developed, but in no case less than 15 feet.

In the RR-1-43 zone, the minimum depth of the rear yard for the primary building shall be 30 feet, and for accessory buildings five feet; provided, that on corner lots which rear upon the side yard of another lot, accessory buildings shall be located not closer than ten feet to such side yard.

In the RR-1-43 zone:

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. No accessory structure shall exceed 20 feet in height. For each foot of height over 14 feet, accessory structures shall be set back from property lines an additional foot from the minimum setback to allow a maximum height of 20 feet.
4. Accessory structures which meet the minimum side, rear and front setbacks for primary buildings in the RR-1-43 zone may have an increase in maximum height to equal the maximum height of primary buildings in the RR-1-43 zone.

The maximum lot coverage in the RR-1-43 zone is 30%, which includes all structures. For those portions of properties also located in the Sensitive Lands Overlay Zone, all impervious surfaces shall also be included in the percentage calculation.

The minimum open space requirement for developments over five acres in the RR-1-43 zone is 10% for standard subdivisions. For PUD’s, the minimum open space shall be determined by the planning commission, but shall not be less than 20% per project.