Va. Code Ann. § 15.2-911  (2008)
§ 15.2-911.  Regulation of alarm company operators

A. Any locality may by ordinance regulate the installation and maintenance of alarm systems operated by alarm company operators.

B. As used in this section, an "alarm company operator" means and includes any business operated for profit, engaged in the installation, maintenance, alteration, or servicing of alarm systems or which responds to such alarm systems. Such term, however, shall not include alarm systems maintained by governmental agencies or departments, nor shall it include a business which merely sells from a fixed location or manufactures alarm systems unless such business services, installs, monitors or responds to alarm systems at the protected premises.

C. As used in this section, the term "alarm system" means an assembly of equipment and devices arranged to signal the presence of a hazard requiring urgent attention and to which police or firefighters are expected to respond. Such system may be installed, maintained, altered or serviced by an alarm company operator in both commercial and residential premises.