N.C. Gen. Stat. § 40A-11
Any condemnor without having filed a petition or complaint, depositing any sum or taking any other action provided for in this Chapter, is authorized to enter upon any lands, but not structures, to make surveys, borings, examinations, and appraisals as may be necessary or expedient in carrying out and performing its rights or duties under this Chapter. The condemnor shall give 30 days' notice in writing to the owner at his last known address and the party in possession of the land of the intended entry authorized by this section.
Entry under this section shall not be deemed a trespass or taking within the meaning of this Chapter, however, the condemnor shall make reimbursement for any damage resulting from such activities, and the owner is entitled to bring an action to recover for the damage. If the owner recovers damages of twenty-five percent (25%) over the amount offered by the condemnor for reimbursement for its activities the court, in its discretion, may award reasonable attorney fees to the owner.
N.C. Gen. Stat. § 40A-11