Va. Code Ann. § 46.2-2118

All permits and certificates of fitness issued under this chapter shall be issued for a period of 12 consecutive months except, at the discretion of the Department, the periods may be adjusted as necessary. Such permits and certificates shall expire if not renewed annually. Such expiration shall be effective 30 days after the Department has provided the permittee or certificate holder notice of nonrenewal. If the permit or certificate is renewed within 30 days after notice of nonrenewal, then the permit or certificate shall not expire.