137.112.  Deferred maintenance, defined. — 1.  As used in sections 137.112 to 137.114, "deferred maintenance" means maintenance, repairs or replacements, as described in this section, to an existing dwelling consisting of any number of residential units, regardless of the classification of the real property for assessment purposes.  The term "deferred maintenance" does not mean the addition of new construction to an existing building which increases the number of square feet of living space, nor does it mean maintenance, repairs, replacements, or new construction to a portion of an existing dwelling if such portion is used for commercial purposes.

  2.  Deferred maintenance includes the maintenance, repair or replacement of the following:

  (1)  Broken floor joists, missing sections or collapsed interior floors;

  (2)  Improperly installed or collapsing partitions, loose or missing plaster;

  (3)  Broken or missing sash, frames or window panes;

  (4)  Inadequate light or ventilation;

  (5)  Missing or defective weather stripping or storm windows;

  (6)  Missing or broken doors;

  (7)  Collapsed or broken stairs, stairways or stair railings;

  (8)  Missing or inoperative sanitary facilities;

  (9)  Hazardous gas or electric installations;

  (10)  Leaking sinks or defective drainboards;

  (11)  Improperly installed, obstructed, broken or leaking piping, drains, vents or traps;

  (12)  Inoperative or obsolete heating plant;

  (13)  Electrical insulation missing or damaged, overloaded electrical circuits, improper electrical installations or connections;

  (14)  Split or buckled basement support beams, open breaks or severe settlement in basement walls;

  (15)  Inadequate exterior wall and attic insulation;

  (16)  Open cracks or breaks in exterior building walls;

  (17)  Holes or cracks through roof, defective roof flashing or skylights;

  (18)  Collapsing or deteriorating chimneys;

  (19)  Broken or missing gutters and downspouts;

  (20)  Rotted fascia boards, eaves, soffits and cornices;

  (21)  Collapsed or broken porch joists, columns or railings;

  (22)  Rotted or broken porch flooring;

  (23)  Missing or broken step treads; and

  (24)  Exterior or interior paint.