Chapter 17.64
ADDITIONAL YARD SETBACK REQUIREMENTS AND EXCEPTIONS

Sections:

17.64.010    Purpose.

17.64.020    Additional setback from centerline required.

17.64.030    No yard required – Structure not on property line.

17.64.040    Exceptions to yard requirements.

17.64.050    Projections into required yards.

17.64.010 Purpose.

The purpose of this chapter is to permit or afford better light, air and vision clearance on more heavily traveled streets and on streets of substandard width, to make the location of structures compatible with the need for the eventual widening of streets by providing for additional yard setback distances, to ensure there is adequate distance between buildings on the site and to provide standards for projections into yard areas. (Ord. 2875 § 1.104.010, 2003)

17.64.020 Additional setback from centerline required.

(1) To ensure improved light, air, and sight distance and to protect the public health, safety, and welfare, structures in any zoning district which abut certain arterial and collector streets shall be set back a minimum distance from the centerline of the street.

(2) Where the street is not partially or fully improved, the measurement shall be made at right angles from the centerline or general extension of the street right-of-way:

(a) Arterial Streets. The required setback distance for buildings on arterial streets is the setback distance required by the zoning district plus the following distances measured from the centerline of the street:

Major Arterial	Additional Centerline Setback Requirement
Highway 30	50 feet

Minor Arterials	Additional Centerline Setback Requirement
Achilles Road/Ross Road Bachelor Flat Road Columbia Boulevard Deer Island Road Gable Road Millard Road North 6th Street Old Portland Road Pittsburg Road South Vernonia Road St. Helens Street Summit View Drive Sykes Road	30 feet

(b) Collector Streets. The required setback distance for buildings on the following collector streets is the setback distance required by the zoning district plus 25 feet measured from the centerline of the street.

Including the following:
Sunset Boulevard	South 18th Street
North Vernonia Road	South 15th Street
Hankey Road	South 12th Street
Highway 30 Frontage Road	South 7th/8th Street
North Morse Road/Firlok Park Street	South 4th Street
Matzen Street	South 1st Street
McNulty Way	Kaster Road
Industrial Way	Wyeth Street
Milton Way	West Street
Railroad Avenue	Oregon Street
Port Avenue	North 11th/12th Street
Plymouth Street	North 15th/16th Street

(3) The minimum yard requirement shall be increased in the event a yard abuts a street having a right-of-way width less than required by its functional classification on the city’s transportation plan map and, in such case, the setback shall be not less than the setback required by the zone plus one-half of the projected road width as shown on the transportation map.

(4) The minimum distance from the wall of any building (except fences or other structures allowed in this code) to the centerline of an abutting street, however, shall not be less than 25 feet plus the yard required by the zone. This provision shall not apply to rights-of-way of 60 feet or greater in width. (Ord. 2875 § 1.104.020, 2003)

17.64.030 No yard required – Structure not on property line.

In zoning districts where a side yard or a rear yard setback is not required, a structure which is not to be built on the property line shall be set back from the property line by a distance in accordance with the Uniform Building Code requirements. (Ord. 2875 § 1.104.030, 2003)

17.64.040 Exceptions to yard requirements.

(1) If there are dwellings on both abutting lots with front yard depths less than the required depth for the zone, the depth of the front yard for the intervening lot need not exceed the average depth of the front yards of the abutting lots.

(2) If there is a dwelling on one abutting lot with a front yard of less depth than the required depth for the zone, the front yard for the lot need not exceed a depth half-way between the depth of the abutting lot and the required front yard depth. (Ord. 2875 § 1.104.040, 2003)

17.64.050 Projections into required yards.

(1) Cornices, eaves, belt courses, sills, canopies, or similar architectural features may extend or project into a required yard not more than 36 inches provided the width of such yard is not reduced to less than three feet.

(2) Fireplace chimneys may project into a required front, side, or rear yard not more than three feet provided the width of such yard is not reduced to less than three feet.

(3) Open porches, decks, or balconies not more than 36 inches in height and not covered by a roof or canopy may extend or project into a required rear or side yard provided such natural yard area is not reduced to less than three feet and the deck is screened from abutting properties. Porches may extend into a required front yard not more than 36 inches.

(4) Unroofed landings and stairs may project into required front or rear yards only.

(5) No building or portion thereof, regardless of size, shall be placed closer than three feet to a property line. (Ord. 2875 § 1.104.050, 2003)