Va. Code § 17.1-114
Whenever in the opinion of a circuit court or the judge thereof, the courthouse or other place wherein it is required to hold its session cannot or should not for any reason be occupied by it, or if the same has been destroyed, or is being repaired, renovated, or enlarged, the court may hold its session at such places within the geographical limits of the same judicial circuit as the court may direct by an order to its clerk. The court shall continue to hold its sessions in such other place until the courthouse or its lawful place of session can be occupied, or until another has been built and fitted for the court's occupation, or until such repairs, renovations or additions have been completed, or until some other place is designated by the court. Except as provided in subsection C of § 17.1-330 or this section or as agreed to by all parties to an action, no session of a circuit court shall be held outside the geographical limits of the county or city of which it is the court.
In the interest of justice, the chief judges of the Twenty-first and the Twenty-third Judicial Circuits may, by order, designate one or more of the courtrooms of any circuit court within their respective circuits as the courtroom or courtrooms in which civil or criminal cases whose venue is laid within the circuit may be tried. In criminal cases, jurors summoned to appear at such courtroom or courtrooms shall reside in the locality in which the crime was committed, except as otherwise provided by law.
Va. Code § 17.1-114