Except as provided by the declaration:
A. if walls, floors or ceilings are designated as boundaries of a unit, all lath, furring, wallboard, plasterboard, plaster, paneling, tiles, wallpaper, paint, finished flooring and any other materials constituting any part of the finished surfaces thereof are a part of the unit, and all other portions of the walls, floors or ceilings are a part of the common elements;
B. if any chute, flue, duct, wire, conduit, bearing wall, bearing column or any other fixture lies partially within and partially outside the designated boundaries of a unit, any portion thereof serving only that unit is a limited common element allocated solely to that unit, and any portion thereof serving more than one unit or any portion of the common elements is a part of the common elements;
C. subject to the provisions of Subsection B of this section, all spaces, interior partitions and other fixtures and improvements within the boundaries of a unit are a part of the unit;
D. any shutters, awnings, window boxes, doorsteps or stoops and all exterior doors and windows or other fixtures designed to serve a single unit, but located outside the unit's boundaries, are limited common elements allocated exclusively to that unit; and
E. any porches, balconies or patios designed to serve a single unit, but located outside the unit's boundaries, are limited common elements allocated exclusively to that unit.