The Hillside Development Suffix is established in order to:

The standards of Sections 17.54.050 through 17.54.200, and the applicable requirements of Chapter 17.115 (Objective Design Standards), shall apply to any use, development, or alteration of land included in this zone; provided, however, that such standards shall not apply to the development of not more than one single-family dwelling unit and accessory buildings on a parcel of record at the date of the adoption of this chapter. Standards for Accessory Dwelling Units and Junior Accessory Dwelling Units are specified in Chapter 17.110 (Accessory Dwelling Units and Junior Accessory Dwelling Units).

Any use, development, or alteration of a parcel shall have a maximum amount of land coverage as calculated by the following rules:

The building height and setback standards specified by the base zone may increase or decrease if such increase or decrease is necessary for the compliance of a proposed use, development, or alteration with the purpose and intent of this section.

For any residential use, development, or alteration of a parcel included in this zone the following building types are permitted: single-family detached dwelling units, duplexes and multiple-family units, accessory dwelling units and junior accessory dwelling units; provided, however, that the maximum number of dwelling units shall not exceed the maximum number of dwelling units that would be permitted pursuant to the standards of the use zone in which the use, development, or alteration is located.

No cut or embankment with a slope greater than three feet horizontal to one foot vertical and more than fifteen feet in total elevation shall be located adjacent to a publicly maintained right-of-way unless an agreement with the city for the vegetation and perpetual maintenance of such slope, at no cost to the city, is executed and bonded.

Within six months after the commencement of grading activities, all graded areas not covered by impervious surface shall be stabilized by vegetative means approved by the city. No final approval of construction shall be given unless there is evidence of eighty percent land coverage by vegetation and a program of landscape maintenance to assure continued growth and effectiveness of vegetation which has been approved by the city.

Vegetative coverage and stabilization of graded areas shall be selected and designed to be compatible with surrounding natural vegetation or to replace removed natural vegetation and should recognize climatic, soil, and ecological characteristics of the region. Plant material that requires excessive water after becoming established should be avoided. Native dry climate grasses and other xerophytic materials shall be selected wherever feasible.

Siting and location of all roads, buildings, and other structural improvements or land coverage shall be designed to fit the natural topography and shall minimize grading and modification of existing land forms and natural characteristics.

No use, development, or alteration shall create uniform, geometrically terraced building sites which are contrary to the natural land forms, substantially detract from the scenic and visual quality of the city or substantially change the natural characteristics of existing major watercourses, established trees, dominant vegetative communities, or habitats of endangered species of wildlife.

No use, development, or alteration shall have a significant adverse environmental impact on the scenic or visual qualities of the environment.

Landscaping shall be required in yards and abutting scenic highways consistent with the purpose of the scenic highways element of the general plan. The existing natural vegetation and land forms within the yards abutting scenic highways shall remain in a natural state unless modification is found to be necessary for a specific use. To enhance the scenic corridor, additional new landscaping may be required concurrent with development.

Where adopted plans indicate the development of trail systems, the development plans shall include those provisions which are found necessary by the reviewing body for the development of such trails.

Modification of adopted standards and specifications for public street and public utility improvements may be considered by the city council upon the recommendation of the public works and planning departments, when found to be consistent with the public's health, safety and welfare.

No property shall develop at a density which exceeds the maximum of the general plan range within which that property lies. If a parcel of property is situated within two different general plan ranges, the density range for that parcel shall be the weighted average of those ranges.

This zone is particularly applicable to those properties lying southerly of the urban slope line as described in the general plan. The urban slope line is specifically defined west to east as below:

Beginning at the northwest corner of the southeast quarter of the northwest quarter of Section 35, thence southerly to the southeast corner, thence easterly to the northwest corner of the northeast quarter of the southeast quarter of the southeast quarter of Section 36, thence southerly to the southwest corner thence easterly to the northwest corner of the southwest quarter of the southeast quarter of Section 31, thence southerly to the southwest corner, thence easterly to the southeast corner of Section 31.