In all instances where a declarant intended to establish on the declarant's property a condominium pursuant to this chapter, as established by the recording of a declaration, plats and plans, and by the subsequent recording of a deed or deeds intending to convey any unit or units, but failed to substantially comply with this chapter due to defects in the drafting, execution, or recording of the declaration, plats or plans, title to any unit that has been constructed and so deeded by the declarant for at least four calendar years without legal challenge shall be deemed to be marketable notwithstanding such defects.
N.C. Gen. Stat. § 47C-1-110