Follow these links to information about Home Rule and Municipal Government in Virginia.
Virginia State Constitution (pdf)
Virginia State Code
Dillon's Rule in Virginia
Virginia Special Districts and Discretionary Authorities
From the Virginia State Constitution:
Article 9, Section 7. Exclusions from term "corporation" or "company."
The term "corporation" or "company" as used in this article shall exclude all municipal corporations, other political subdivisions, and public institutions owned or controlled by the Commonwealth.