Portland city ordinance 11-132 (Alarm Systems) makes it an offense for any person or business to install, cause to be operated, or operate an alarm system without first obtaining a valid permit from the City of Portland. A separate permit is required for each alarm site.
Even alarms that are not being monitored by an alarm company may need an alarm permit. If the alarm system is not being monitored but is being used and the alarm goes off and a neighbor standing outside can hear the alarm, then the resident /business is required to have a valid permit with the city.
This ordinance includes fire alarms. Obtaining an alarm permit is the responsibility of the alarm user, not the alarm company. You can apply for an alarm permit in person at the police department or by downloading an alarm permit application.