Boston is not the perfect place for moving. Its tiny streets are really difficult to drive and especially park your moving truck. There are some large streets, of course, but also there is North End, for example, and it’s really different story. In such places as Beacon Hill is impossible to find parking for a car not to mention the truck.
So, when you need to park a truck in front of your apartments to load it you have to purchase parking permits. You can simply go to their website and make it in 5 minutes. After 2 weeks you will get your permits and will be able to place them on the street to reserve a couple of parking spots for your moving needs.