You’re relocating to a home with home security alarms
A new house may come with a home security system. All the alarms and cameras work, are installed in the best places, and are ready to go. In this instance, just pick up the phone to call and start a new monitoring contract. A Vivint expert will still show up to make sure there are no compatibility problems, and they could offer options on upgrades. It's a quick visit, and you can have your 24/7 monitoring set up without worrying about any new alarms and cameras -- unless you make additions.
The old owners can transfer an existing Vivint contract to you for a nominal transfer cost to make your life easier. If the previous owners downsize to a condo or retirement community, you keeping the home security contract may be a condition of the sale.
You are looking to move and bring your existing components with you
You might need to take your existing Vivint system with you to a new house when you move. Luckily, it's pretty simple to accomplish, as many alarms and smart devices are plug and play. You can remove each device by yourself or contact a professional expert to dismantle your devices. Then an expert will put in the same features -- and any smart items you need to add -- in the new home. Your home security contract will stay the same.