You moved into a house with a pre-installed security system
Sometimes when you purchase a house, a security system is already installed. All the components work, are hung in the best spaces, and are ready to go. In this example, you might find that you have to call and set up a new service contract. A Vivint installer will still come out to make sure there are no integration issues, and they might offer suggestions on where you should replace bad outdated components. It's a quick appointment, and you can get your alarm monitoring set up without worrying about any new devices -- unless you get some new devices.
The old owners can transfer an existing Vivint contract to your family for a small set-up fee to make your life a snap. If the owners are moving to an apartment complex or retirement community, transferring the home security contract might be a condition of the sale.
You are looking to move and bring your home security components with you
You might want to bring your existing smart devices with you to your new home when you move. Luckily, it's fairly simple to accomplish, as most alarms and smart devices are wireless. You can uninstall each alarm or camera yourself or contact a professional expert to take down your devices. Then an expert will hang the same components -- and any additions you need to make -- in your new home. Your home security contract will remain the same.