Alarm Company Business License

Alarm Business License
Any business that engages in the activity of altering, installing, leasing, maintaining, moving, repairing, replacing, selling, servicing, or responding to an emergency alarm system, or which causes any of these activities to take place in the City of Ladue must obtain and maintain that license. Alarm Business Licenses run for a calendar year and must be renewed each year by January 2nd.

Alarm Business License Application

To apply, download the Alarm Business License form and submit by mail to: City of Ladue 9345 Clayton Rd St. Louis, MO 63124 or email: [email protected]

The annual fee for an Alarm Business License is $75.00 and must be renewed each year.  Click the link below to pay online. Must receive both payment and application form to be considered complete.


Each alarm business that sells or leases, and installs an emergency alarm system within the city must offer service, directly or through an agent, to repair such alarm so as to correct any malfunction that may occur. At the time of the installation, each alarm business shall furnish to the alarm user written information as to how service can be obtained at any time, including the telephone number to call for service, and the alarm user shall be responsible for having the system repaired as quickly as possible after he learns of any malfunction. Before performing any service on any alarm system in the city the alarm business must notify the City Police Department by calling 314-993-1214.

To view the City's code on Alarm Business visit the following link.


Contact City Hall at (314) 993-3439 or [email protected].