N.D. Cent. Code § 57-02.2-02
57-02.2-02. Improvement defined
57-02.2-02. Improvement defined
In this chapter, unless the context or subject matter otherwise requires, the term
"improvement" means the renovation, remodeling, or alteration, but not the replacement, of an
existing building or structure for use for commercial or residential purposes. An improvement for
residential purposes is limited to a building or structure at least twenty-five years old. An addition
constructed to an existing building or structure to enlarge it is an improvement for the purposes
of this chapter.