Your new place has a pre-installed home security system
Many times after you close on a home, you’ll see that the old owners used a security system. All the components function well, are hung in the right areas, and are ready to go. In this case, all you might have to do is to call and establish a new service contract. A Vivint professional will still come out to ensure there are no usability problems, and they might offer ideas on an upgrade or two. It's a quick visit, and you can get your monitoring set up without paying for any new components -- unless you get some new devices.
The outgoing homeowners can move an existing Vivint contract to you for a nominal set-up fee to make the process easier. If the outgoing residents are moving to an apartment or smaller home, you keeping the Vivint service may be a condition of the sale.
You are looking to move and take your old components with you
You might need to bring along your favorite Vivint system with you to a new home when you move. Luckily, it's fairly simple to accomplish, as modern smart devices are portable. You can take down each component yourself or use a professional installer to come and dismantle everything. Then an expert will set up the same components -- and any new things you want -- in your new place. Your home security contract will remain the same.