Private property

Private property refers to assets owned by individuals or private organizations, as opposed to public property held by the government or collective property shared by a group. It is a cornerstone of capitalism, where the means of production are privately owned and operated for profit. The specific rules defining and protecting private property are set by a country’s political and legal system.

**History**

In ancient Mesopotamia, there was no word for "property," but most legal records dealt with managing what we now call property—ensuring fair and unchallengeable claims. While land could be bought and sold, records show a preference for keeping it within families and avoiding plots too small for farming.

Written debates about private property in the West go back at least to Plato. Before the 1700s, English speakers used "property" mainly for land. A legal definition of property emerged in 17th-century England, and the idea of private property owned by commercial entities grew with the great trading companies of that era. The enclosure of agricultural land in England sparked philosophical discussions by thinkers like Thomas Hobbes, James Harrington, and John Locke.

Locke, opposing absolute monarchy, argued that property was a natural right, not a gift from the king. His labor theory held that mixing labor with nature gave the laborer a rightful claim to the result. Influenced by mercantilism, Locke believed private property existed before and independently of government. He distinguished common land from consumer and producer goods, arguing that private land ownership led to better farming than common land.

In the 1700s, Adam Smith separated the "right to property" from natural rights like liberty and life, calling property an acquired right. He noted that property and civil government depended on each other—government’s main role was to define and protect property, and without property, government couldn’t exist.

In the 1800s, Karl Marx analyzed how property forms changed with productive forces. His ideas about private property, especially in the means of production, shaped later economic theories and communist, socialist, and anarchist movements, linking private property closely to capitalism.

In the 1900s, classical and economic liberals like Ludwig von Mises and Friedrich Hayek saw private property as essential for economic calculation, market coordination, and liberty. Some theorists, such as Murray Rothbard, argued that property rights arise from first use and voluntary exchange, independent of the state. This view, tied to anarcho-capitalism, suggests that property rights can form the basis of law and order without centralized government, relying on markets and contracts.

**Legal and Real-World Aspects**

Private property is defined and enforced by a country’s legal and political institutions. Theories differ on whether property rights come from law, custom, contract, or natural rights. The relevant field is property law. Governments fund courts, police, and agencies that enforce property law through public taxes. Defense of property is a common legal justification for using force to protect one’s property, though courts limit this right by statute and precedent.

Many governments tax property ownership. A property tax is an ad valorem tax on the value of real estate, levied by the local governing authority. It may be charged annually or at the time of a real estate transaction.