Bailment is a legal relationship in common law, where the owner transfers physical possession of personal property ("chattel") for a time, but retains ownership. The owner who surrenders custody to a property is called the "bailor" and the individual who accepts the property is called a "bailee". The bailee is the person who possesses the personal property in trust for the owner for a set time and for a precise reason and who delivers the property back to the owner when they have accomplished the purpose that was initially intended.
Bailment is distinguished from a contract of sale or a gift of property, as it only involves the transfer of possession and not its ownership. To create a bailment, the bailee must both intend to possess, and actually physically possess, the bailable chattel. Although a bailment relationship is ordinarily created by contract, there are circumstances where lawful possession by the bailee creates a bailment relationship without an ordinary contract, such as an involuntary bailment. A bailment relationship between the bailor and bailee is generally less formal than a fiduciary relationship.
In addition, unlike a lease or rental, where ownership remains with the lessor but the lessee is allowed to use the property, the bailee is generally not entitled to the use of the property while it is in his possession. However, a lease of personal property is the same as a bailment for hire, where the bailee gains the right to use the property.
A common example of bailment is leaving one's car with a valet. Leaving a car in an unattended parking garage, however, is typically a lease or license of a parking space rather than a bailment, as the garage does not take possession of (i.e. exercise dominion or control over) the car. However, bailments arise in many other situations, including terminated leases of property, warehousing (including store-it-yourself), or in carriage of goods.
In the United States, bailments are frequently governed by statute. For example, the UCC regulates personal property leases.