17 Va. Admin. Code § 10-20-110
In addition to determining the property's significance, the director shall determine its integrity. As set out in 17VAC10-20-50, a property's integrity is assessed by examining its location, design, setting, materials, workmanship, feeling, and association. A property nominated for designation as a National Historic Landmark must retain a high degree of integrity.
§ 10.1-2202 of the Code of Virginia.
Derived from VR392-01-02 § 3.8, eff. February 9, 1994.