In common law systems, land tenure, from the French verb "tenir" means "to hold", is the legal regime in which land "owned" by an individual is possessed by someone else who is said to "hold" the land, based on an agreement between both individuals. It determines who can use land, for how long and under what conditions. Tenure may be based both on official laws and policies, and on informal local customs. In other words, land tenure implies a system according to which land is held by an individual or the actual tiller of the land but this person does not have legal ownership. It determines the holder's rights and responsibilities in connection with their holding. The sovereign monarch, known in England as the Crown, held land in its own right. All land holders are either its tenants or sub-tenants. Tenure signifies a legal relationship between tenant and lord, arranging the duties and rights of tenant and lord in relationship to the land. Over history, many different forms of land tenure, i.e., ways of holding land, have been established.

In English common law, real property, real estate, immovable property or, solely in the US and Canada, realty, refers to parcels of land and any associated structures which are the property of a person. In order for a structure to be considered part of the real property, it must be integrated with or affixed to the land. This includes crops, buildings, machinery, wells, dams, ponds, mines, canals, and roads. The term is historic, arising from the now-discontinued form of action, which distinguished between real property disputes and personal property disputes. Personal property, or personalty, was, and continues to be, all property that is not real property.