17 Va. Admin. Code § 10-20-80
4. Additional research documenting that a larger or smaller area should be listed.
The director shall recommend no enlargement of a boundary unless the additional area possesses previously unrecognized significance in American history, architecture, archeology, engineering or culture. The director shall recommend no diminution of a boundary unless the properties recommended for removal do not meet the National Register criteria for evaluation.
Four justifications exist for altering a boundary of a property previously listed in the National Register:
§ 10.1-2202 of the Code of Virginia.
Derived from VR392-01-02 § 3.5, eff. February 9, 1994.