No property may contain any dangerous structure or derelict building as described in this chapter. All such structures must be repaired or demolished.

1. A. A derelict building is considered to exist whenever any building, structure, or portion thereof that is unoccupied meets any of the following criteria or any residential structure that is at least 50 percent unoccupied meets any of the following two criteria:
   1. 1. Has been ordered vacated by the City Administrator pursuant to Chapter 29.60;
   2. 2. Has been issued a correction notice by the City Administrator pursuant to Section 29.60.050;
   3. 3. Is unsecured;
   4. 4. Is boarded;
   5. 5. Has been posted for violation of Chapter 29.20 more than once in any two-year period; or
   6. 6. Has, while vacant, had a nuisance abated by the City pursuant to this Title.
2. B. Any property that has been declared by the City Administrator to include a derelict building is in violation of this Title until:
   1. 1. The building has been lawfully occupied;
   2. 2. The building has been demolished and the lot cleared and graded under building permit, with final inspection and approval by the City Administrator; or
   3. 3. The owner has demonstrated to the satisfaction of the City Administrator that the property is free of all conditions and in compliance with all notices listed in the definition of a derelict building in this Section.

Any structure that has any or all of the following conditions or defects to the extent that life, health, property, or safety of the public or the structure’s occupants are endangered, is deemed to be a dangerous structure and such condition or defects must be abated pursuant to Sections 29.60.050 and 29.60.080 of this Title.

1. A. High loads. Whenever the stress in any materials, member, or portion of a structure, due to all dead and live loads, is more than 1-1/2 times the working stress or stresses allowed in the Oregon Structural Specialty Code and Fire and Life Safety Code for new buildings of similar structure, purpose, or location.
2. B. Weakened or unstable structural members or appendages.
   1. 1. Whenever any portion of a structure has been damaged by fire, earthquake, wind, flood, or by any other cause, to such an extent that the structural strength or stability is materially less than it was before such catastrophe and is less than the minimum requirements of the Oregon State Structural Specialty Code and Fire and Life Safety Code for new buildings of similar structure, purpose, or location; or
   2. 2. Whenever appendages including parapet walls, cornices, spires, towers, tanks, statuaries, or other appendages or structural members that are supported by, attached to, or part of a building, and that are in a deteriorated condition or otherwise unable to sustain the design loads that are specified in the Oregon State Structural Specialty and Fire and Life Safety Code.
3. C. Buckled or leaning walls, structural members.Whenever the exterior walls or other vertical structural members list, lean, or buckle to such an extent that a plumb line passing through the center of gravity does not fall inside the middle one-third of the base.
4. D. Vulnerability to earthquakes, high winds.
   1. 1. Whenever any portion of a structure is wrecked, warped, buckled, or has settled to such an extent that walls or other structural portions have materially less resistance to winds or earthquakes than is required in the case of similar new construction; or
   2. 2. Whenever any portion of a building, or any member, appurtenance, or ornamentation of the exterior thereof is not of sufficient strength or stability, or is not so anchored, attached or fastened in place so as to be capable of resisting a wind pressure of one-half of that specified in the Oregon Structural Specialty Code and Fire and Life Safety Code for new buildings of similar structure, purpose, or location without exceeding the working stresses permitted in the Oregon State Structural Specialty Code and Fire and Life Safety Code for such buildings.
5. E. Insufficient strength or fire resistance. Whenever any structure that, whether or not erected in accordance with all applicable laws and ordinances:
   1. 1. Has in any non-supporting part, member, or portion, less than 50 percent of the strength or the fire-resisting qualities or characteristics required by law for a newly constructed building of like area, height, and occupancy in the same location; or
   2. 2. Has in any supporting part, member, or portion less than 66 percent of the strength or the fire-resisting qualities or characteristics required by law in the case of a newly constructed building of like area, height, and occupancy in the same location.
   3. This subsection does not apply to strength required to resist seismic loads. For application of seismic requirements see Chapter 24.85.
6. F. Risk of failure or collapse.
   1. 1. Whenever any portion or member of appurtenance thereof is likely to fail, or to become detached or dislodged, or to collapse and injure persons or damage property; or
   2. 2. Whenever the structure, or any portion thereof, is likely to partially or completely collapse as a result of any cause, including but not limited to:
      1. a. Dilapidation, deterioration, or decay;
      2. b. Faulty construction;
      3. c. The removal, movement, or instability of any portion of the ground necessary for the purpose of supporting such structure; or
      4. d. The deterioration, decay, or inadequacy of its foundation.
7. G. Excessive damage or deterioration.Whenever the structure exclusive of the foundation:
   1. 1. Shows 33 percent or more damage or deterioration of its supporting member or members;
   2. 2. 50 percent damage or deterioration of its non-supporting members; or
   3. 3. 50 percent damage or deterioration of its enclosing or outside wall coverings.
8. H. Demolition remnants on site.Whenever any portion of a structure, including unfilled excavations, remains on a site for more than 30 days after the demolition or destruction of the structure;
9. I. Lack of approved foundation.Whenever any portion of a structure, including unfilled excavations, remains on a site, including:
   1. 1. Where a structure is not placed on an approved foundation and no valid permit exists for a foundation for that structure: or
   2. 2. For more than 90 days after issuance of a permit for a foundation for a structure, where the structure is not placed on an approved foundation.
10. J. Fire hazard. Whenever any structure is a fire hazard as a result of any cause, including but not limited to: Dilapidated condition, deterioration, or damage; inadequate exits; lack of sufficient fire-resistive construction; or faulty electric wiring, gas connections, or heating apparatus.
11. K. Other hazards to health, safety, or public welfare.
    1. 1. Whenever, for any reason, the structure, or any portion thereof, is manifestly unsafe for the purpose for which it is lawfully constructed or currently is being used; or
    2. 2. Whenever a structure is structurally unsafe or is otherwise hazardous to human life, including but not limited to whenever a structure constitutes a hazard to health, safety, or public welfare by reason of inadequate maintenance, dilapidation, unsanitary conditions, obsolescence, fire hazard, disaster, damage, or abandonment.
12. L. Public nuisance.
    1. 1. Whenever any structure is in such a condition as to constitute a public nuisance known to the common law or in equity jurisprudence; or
    2. 2. Whenever the structure has been so damaged by fire, wind, earthquake or flood or any other cause, or has become so dilapidated or deteriorated as to become:
       1. a. An attractive nuisance, or
       2. b. A harbor for vagrants or criminals.
13. M. Chronic dereliction. Whenever a derelict building, as defined in this Title, remains unoccupied for a period in excess of six months or period less than six months when the building or portion thereof constitutes an attractive nuisance or hazard to the public.
14. N. Violations of codes, laws.Whenever any structure has been constructed, exists, or is maintained in violation of any specific requirement or prohibition applicable to such structure provided by the building regulations of this City, as specified in the Oregon State Structural Specialty Code and Fire and Life Safety Code or any law or ordinance of this State or City relating to the condition, location, or structure or buildings.

All structures or portions of them that are determined after inspection by the City Administrator to be dangerous as defined in this Title are declared to be public nuisances and will be abated by repair, rehabilitation, demolition, or removal in accordance with the procedures specified in this Title. If the City Administrator determines that a structure is dangerous, as defined by this Title, the City Administrator may commence proceedings to cause the repair, vacation, demolition, or warehousing of the structure.