You’re relocating to a place with security devices
A new home may come with a home security system. All the alarms and cameras work, are installed in the right areas, and are ready to go. In this example, just turn on the phone to call and start a new monitoring contract. A Vivint professional will still come out to make sure there are no compatibility problems, and they might offer suggestions on upgrades. It's a fast visit, and you can get your alarm monitoring set up without paying for any new alarms and cameras -- unless you get some new devices.
The old homeowners can transfer an existing Vivint contract to your family for a nominal transfer cost to make your life a snap. If the outgoing residents are downsizing to a condo or retirement community, turning over the Vivint service might be an addendum of the sale.
You want to move and bring your home security devices with you
You may want to take your favorite smart devices with you to your new house when you move. It should be fairly easy to accomplish, as many components are portable. You can uninstall each alarm or camera yourself or call a Vivint expert to come and take care of your devices. Then a pro will hang the same components -- and any smart services you want to add -- in your new place. Your home security contract will remain the same.