Rental agreement: Complete your rental agreement (online, over the phone, or in person). Payment: Make your first month’s payment for your storage unit as well as your one-time administrative fee. Insurance: We require insurance coverage for the items you store at CubeSmart. And we offer affordable, third-party insurance/protection plan options. If you are already covered, provide a copy of the declaration page at the time of rental. Identification: A state-issued ID card, driver’s license, passport, or military ID before moving in.