Where a lot has frontage upon a county road proposed for right-of-way widening on the Master Plan or Official Map of the County of Salem, the required front yard depth shall be measured from a line parallel to and 33 feet from the road center line measured at a right angle unless the existing street line is a greater distance from the road center line. Where a lot has frontage on any road with the street line at less than 25 feet measured at a right angle from the center line, the required front yard depth shall be measured from a line parallel to and at that distance from the center line.

If two, or more lots or combinations of lots or portions of lots with contiguous frontage in single ownership are of record at the time of passage or amendment of this chapter and if all or part of the lots do not meet the requirements for lot width and area as established by this chapter, the lands involved shall be considered to be an undivided parcel for the purpose of the chapter, and no portion of said parcel shall be used or sold which does not meet lot width and area requirements established by this chapter, nor shall any division of the parcel be made which leaves remaining any lot with a width or area less than the requirements stated in this chapter.

Building setback lines for a corner lot shall be the same as required on the adjoining lot along either block.

All buildings and structures shall be subject to height limitations specified in the Schedule of District Regulations[1] except spires, belfries, domes, cupolas, scenery lofts, masts, flagpoles, chimneys, flues, ventilators, elevator penthouses, water tanks, towers, antennas, skylights, bulkheads and similar decorative features and necessary mechanical appurtenances usually carried above roof level. The aggregate horizontal area covered by such features shall not exceed 20% of the area covered by the principal building. The excess height of any such structure shall not be greater than the shortest distance from such structure to any required yard, nor shall the total height exceed twice the building height limitation in the district in which it is located. The foregoing does not pertain to transmission towers and associated right-of-way widths which are to be determined by standards in the National Electric Safety Code. Agricultural buildings not intended for human occupancy shall not be subject to the horizontal area limitations.

In the case of irregularly shaped lots on culs-de-sac or curved street sections, the minimum lot width specified in the schedule shall be measured at the building setback, provided that in no case shall a distance between side lot lines be reduced to less than 50% of the minimum lot width requirement.

Building projections, including bays, chimneys, cornices and gutters, may extend into required yard areas for a distance not to exceed five feet and shall not be located within 10 feet of any property line.

Every principal building shall be built upon a lot having frontage on a public street as defined in this chapter.

No part of a yard or other open space or off-street parking or loading space required about or in connection with any buildings for the purpose of complying with this chapter shall be included as part of a yard, open space or off-street parking or loading space similarly required for any other building.

Within each district, the regulations set by this chapter shall be minimum regulations and shall apply uniformly to each class or kind of structure or land.

No yard or lot existing at the time of passage of this chapter shall be reduced in size or area below the minimum requirements set forth herein. Yards or lots created after the effective date of this chapter shall meet at least the minimum requirements as established by this chapter.