For common open space, a one-percentage point decrease in lot size may be given for the creation of open space within the development. To qualify for the density bonus, the open space shall be least five percent of the total development and in one continuous block. One percentage point decreased up to six percent can be awarded for each open space created.

For preservation of natural features, percentage points may be given for lack of major alterations to sites with over 12% slopes according to the following standards: six points are awarded for minimal disturbance with no excavation other than for foundations, roads follow contours of land and no or very minor vegetation removal and grading. Three points are awarded for moderate disturbance. To qualify for moderate disturbance: road cuts shall be no deeper than four feet; retaining walls shall be no higher than four feet; and excavation for foundations and grading for placement of structures are allowed. No points are awarded for severe disturbance with extensive grading for roads and structures, extensive tree and ground cover removal over most of the site and placement of retaining walls for structures and roads.

Percentage points may be given for provisions of major recreational facilities not required by Chapters 10 to 14 according to the following standards: six points shall be given for a major facility such as tennis courts or swimming pools; three points shall be given for a small playground, tot lot or similar facility.

As many as six percentage points may be given for energy conservation features such as solar space or water heating devices, heat pumps and similar devices. In order to qualify for the density bonus, all dwelling units within the development shall have energy conservation.

As many as six percentage points may be given for multifamily developments where structural and design amenities are provided such as individual decks, courtyards or balconies, exterior design (such as peak roofs and natural wood siding), blending of structures with existing trees and topography, planned landscaping, covered parking, landscaped walkways and arrangement of dwellings and windows for privacy.

Within the area defined in subsection B, if a developer provides housing subsidized under programs provided by the U.S. Department of Housing and Urban Development or the Oregon Department of Commerce for "low or moderate income families" or "elderly persons" or "persons with disabilities," as defined by such programs, and the subsidized housing represents not less than 50% of the total buildable area of the lot or parcel, the developer need only provide 25% of the off-street parking requirement. Such bonus shall remain effective only upon continued compliance with the provisions of the applicable Federal or State program.

The off-street parking bonus may be granted within the boundaries depicted on the following map: Beginning at a point on the southwesterly line of Eleventh Street, said point being the northwesterly corner of Lot 8, Block 50, of Nichols Addition; thence southwesterly along first, the southeasterly line of Jefferson Street to this intersection with the northeasterly line of Ewauna Street also being the southwesterly corner of Lot 4, Block 11, of Ewauna Heights; thence southeasterly along the northeasterly line of Ewauna Street to this intersection with the southeasterly line of Main Street; thence easterly along the radii of the southerly line of Center Street to this intersection with the southeasterly line of Klamath Avenue; thence northeasterly along the southeasterly line of Klamath Avenue to its intersection with the northeasterly line of Fifth Street, also being the southwesterly corner of Lot 5, Block 75, Klamath Addition; thence southeasterly along the northeasterly line of Fifth Street, to its intersection with the northwesterly line of Willow Street, also being the southeasterly corner of Lot 6, Block 97, Klamath Addition; thence northeasterly along the northwesterly line of Willow Street, to its intersection with the southwesterly line of Seventh Street also being the northeasterly corner of Lot 10, Block 96, Klamath Addition; thence southeasterly along the northwesterly line of Seventh Street to its intersection with the westerly line of Commercial Street, also being Lot 10, Block 105, Klamath Addition; thence north along the westerly line of Commercial Street to intersection with the southwesterly line of Eleventh Street; thence northwesterly along the southwesterly line of Eleventh Street to the point of beginning.