You’re moving into a house with security components
A new home may come with an existing security system. All the alarms and cameras work, are installed in the correct spaces, and are ready to go. In this instance, just turn on the phone to call and start a new monitoring contract. A Vivint professional will still show up to ensure there are no usability issues, and they might offer ideas on where you should replace bad outdated components. It's a fast visit, and you can get your monitoring set up without worrying about any new devices -- unless you make additions.
The previous homeowners can move an existing Vivint contract to your family for a nominal set-up cost to make your life simpler. If the previous owners are downsizing to a condo or smaller home, transferring the Vivint service might be a part of the sale.
You need to move and take your existing components with you
You might need to bring along your old Vivint system with you to your new house when you move. That’s fairly easy to accomplish, as most components are plug and play. You can remove each device by yourself or use a professional installer to come and take care of the system. Then a pro will hang the same devices -- and any smart services you need to add -- in your new place. The home security contract will remain the same.