A system and method are disclosed herein for maintaining an inventory of assets located at an insured property covered under an insurance policy based on data received from IP-addressable devices located at the property. The system includes an inventory database for storing inventory information about assets located at an insured property, a communication interface for receiving registration and operational data associated with an IP-addressable device, and a business logic computer. The business logic computer creates a data structure for storing inventory information about assets located at the insured property in the inventory database for each insured property. The business logic computer determines, for the insured property, the inventory information about the insured property's assets based on registration and operational data received from its IP-addressable devices located at the property. The business logic computer stores the insured property's inventory information in its associated data structure in the inventory database.