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 a business license.

Alarm Business License Application

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

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.


Questions?Contact City Hall at (314) 993-3439 or


Upcoming Events

July 5
Zoning Board of Adjustment
4:00 PM
9345 Clayton Road
July 7
Architectural Review Board
8:30 AM
Via Zoom, 9345 Clayton Rd
July 18
City Council Meeting
4:00 PM
9345 Clayton Road
July 21
Architectural Review Board
8:30 PM
July 27
Zoning and Planning
4:00 PM
9345 Clayton Road
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