Neither the creation of a district nor any other provision in this article shall affect the power, jurisdiction, or duties of the respective local governing bodies, sheriffs, treasurers, commissioners of revenue, circuit, district, or other courts, clerks of any court, magistrates, or any other town, county, or state officer in regard to the area embraced in any district, nor restrict or prevent any town or county or its governing body from imposing and collecting taxes or assessments for public improvements as permitted by law. Notwithstanding any contrary provisions of law, any county that creates a district pursuant to this section may obligate itself with respect to the zoning ordinances, zoning ordinance text, and regulations relating thereto for all classifications within the district as provided in subsection C of § 15.2-4802 for a term not to exceed 20 years from the date on which such a district is created.