Ownership is the most comprehensive right a legal system recognises over a thing — a bundle of rights to possess, use, enjoy, alienate and destroy, residual after every lesser interest is carved out. Yet a person who owns may not possess, and a person who possesses may not own. This article unpacks the concept of ownership, its incidents and kinds, and the cardinal distinction between ownership and possession — the two pillars of the law of property in jurisprudence. It builds on the analytical apparatus of the analytical school and connects to the broader scheme set out in the Jurisprudence hub.

The Concept of Ownership

Ownership denotes the relation between a person and a thing which forms the subject-matter of that person's right. Salmond defined it as the relation between a person and any right that is vested in him, and in its widest sense as the right to the general or residuary uses of a thing after the deduction of all special and limited rights of use vested by way of encumbrance in other persons. Ownership is therefore not a single right but an aggregate — a bundle of rights — all of which are rights in rem, availing against the whole world.

Austin approached ownership from a different angle, defining it by reference to three characteristics: an indefinite right of user, an unrestricted right of disposition, and an unlimited duration. The owner may use the thing as he pleases, may dispose of it as he wishes, and his right endures indefinitely, passing on his death to his heirs. Austin's analysis has been criticised as over-simplified, because in no developed legal system is the right of user truly indefinite — the law of nuisance, planning regulation and the maxim sic utere tuo ut alienum non laedas all restrict it — nor is disposition unrestricted, given rules against perpetuities and statutory ceilings on land-holding.

Salmond's own caution is the corrective: it is a fallacy, he says, to describe the owner's right as absolute. The title of the owner is indisputable, but the law of the land may at any time restrict the use of the property in the public interest. Ownership is thus the largest right the law allows over a thing, but it is a right held within, not above, the legal order.

Ownership as a Bundle of Rights

The modern analytical view, traceable to Wesley Newcomb Hohfeld's scheme of jural relations, treats ownership not as a monolithic right but as a collection of rights, liberties, powers and immunities clustered around a thing. On this view the owner has the liberty to use the thing, the claim-right that others not interfere, the power to transfer his interest, and the immunity against having that interest divested without his consent. The phrase bundle of rights captures the insight that these incidents can be unbundled — leased, mortgaged, licensed away — without the owner ceasing to be owner.

The principal incidents of ownership, following Salmond, are five. First, the right of possession: the owner is entitled to possess the thing, and this right persists even when the thing is hired, pawned, leased or bailed, so that physical control rests temporarily with another while the owner's right continues. Second, the right of use and enjoyment: the owner may use the thing and take its fruits. Third, the right to consume, alienate or destroy: he may transfer it, encumber it, or destroy it as he wishes, subject to law. Fourth, indeterminate duration: ownership has no fixed term; whereas a lease, bailment, pledge or mortgage endures for a defined period, ownership continues and, on the owner's death, devolves on his heirs. Fifth, the residuary character: even where all the lesser rights — lease, easement, profit — are carved out and granted away, what remains vests in the owner, and on the termination of those lesser interests they revert to him. The owner is, in Salmond's phrase, the residuary claimant.

The Subject-Matter: Property

Ownership is exercised over property. In its widest sense property includes all the legal rights of a person of whatever description, personal as well as proprietary; in its narrow and more useful sense it denotes only proprietary rights — those with economic value, capable of being valued in money and transferred. Land, chattels, stocks, patents, trade marks and copyrights are property in this narrow sense.

Property is broadly of two kinds, corporeal and incorporeal. Corporeal property is the right of ownership in material, tangible things — land, a house, ornaments, gold — and is further divided into movable and immovable. Immovable property comprises a portion of the earth's surface, the ground beneath it down to the centre of the earth and the space above to the heavens, all objects under the surface in their natural state such as minerals and stones, and permanent fixtures such as buildings. The breadth of this conception was applied in Elwes v Brigg Gas Co (1886) 33 Ch D 562, where a prehistoric boat found embedded six feet below the surface of leased land was held to belong to the landowner, who was in possession not merely of the surface but of everything beneath it down to the centre of the earth. Movable property is any corporeal property that is not immovable — goods, chattels, furniture.

Incorporeal property is a proprietary right over something intangible, and falls into two divisions. Jura in re aliena are encumbrances — rights in the property of another — such as leases, mortgages, servitudes and trusts. Jura in re propria are rights over immaterial things in which one has a primary interest — patents, trade marks, copyright and goodwill. Salmond observed that the distinction between corporeal and incorporeal property is in truth only theoretical, since all ownership is ownership of rights; but it remains analytically useful, and feeds directly into the kinds of ownership discussed below.

Modes of Acquiring Ownership

Ownership may be acquired in four principal modes. Occupation or possession applies to res nullius — a thing belonging to no one — which anyone is at liberty to take and make his own by the very act of taking possession; here possession of the material object is itself the title to ownership, and possession is the objective realisation of ownership. A fisherman who catches a fish in open water acquires an original title by occupation.

Prescription is the effect of the lapse of time in creating or destroying rights — the operation of time as a vestitive fact. It is of two kinds: positive or acquisitive prescription, by which long enjoyment ripens into a title, and negative or extinctive prescription, by which a right is destroyed through non-exercise. Its rational basis is the coincidence of possession and ownership, of fact and right, over a long period. Agreement embraces all bilateral acts in the law and is of two species — assignment, by which an existing right is transferred from one person to another, and grant, by which a new right is created as an encumbrance upon the grantor's existing right, as in a lease. Inheritance operates on the death of the owner: heritable rights survive to the heirs, who bear the personality of the deceased and in whom all the inheritable rights vest. Proprietary rights are generally heritable; purely personal rights generally are not.

Vested and Contingent Ownership

Ownership may be vested or contingent according to whether the owner's title is presently complete or awaits the fulfilment of a condition. Take Salmond's standard illustration: T by his will gives his property to his wife W for life, and on her death to A if A is then living, otherwise to B. During W's lifetime, A and B each hold a contingent ownership — A's interest depends on his being alive at W's death, and B's depends on A's not being alive then. The condition is a condition precedent: the investitive fact is as yet incomplete.

In vested ownership the owner's title is perfect, he owns the property absolutely, the investitive fact is complete and the title is complete in itself. In contingent ownership the title becomes perfect only on the fulfilment of some condition; ownership is held conditionally and the investitive fact is incomplete. A contingent interest is nonetheless something more than a mere chance or possibility — it is a present, if imperfect, proprietary interest, transferable and transmissible, distinguished from a bare spes successionis. The distinction tracks the analytical preoccupation with the precise moment at which a right vests, a concern central to the analytical-imperative school.

The distinction between legal and equitable ownership is a legacy of the divided English judicial system. Legal ownership originated in the common law courts; equitable ownership is traceable to the Court of Chancery, which recognised and protected interests the common law would not. Though the Judicature Acts of 1873–75 fused the administration of law and equity in a single court, the substantive distinction between the two kinds of ownership survives, because the rules they generated were not themselves abolished.

Two owners may thus exist in respect of a single thing. If A orally assigns a debt to B, A remains the legal owner of the chose in action while B becomes its equitable owner — one debt, two owners, recognised by two systems of rules. The same duality appears in the trust, where the trustee is the legal owner bound to hold for the benefit of the beneficiary, who is the equitable owner, and in the equitable mortgage, where the mortgagor retains legal ownership while the mortgagee holds an equitable security interest. Equitable ownership is good against the whole world except a bona fide purchaser of the legal estate for value without notice — the classic exception that preserves the priority of the legal title.

Corporeal, Incorporeal, Sole and Co-ownership

Ownership tracks the property it governs. Corporeal ownership is ownership of material, tangible objects — land, a house, machinery, money in hand. Incorporeal ownership is ownership of intangibles — copyright, patent, trade mark, the goodwill of a business, a right of way. Salmond's neat illustration: if A has ten thousand rupees in his hand, that is corporeal ownership; but if A is owed ten thousand rupees by B, B's debt is a chose in action and A's right to recover it is incorporeal ownership.

Ownership may also be sole or concurrent. The general rule is that a thing has one owner — a sole owner. But two or more persons may hold a vested ownership in the same thing at the same time; partners, for instance, are co-owners of the partnership property. Co-ownership is of two kinds. In ownership-in-common (tenancy in common) each co-owner holds a distinct, if undivided, share, and on his death that share passes to his heirs under the law of inheritance. In joint ownership (joint tenancy) the co-owners hold a single title, and on the death of one his interest passes to the survivors by the doctrine of survivorship (jus accrescendi) rather than to his heirs. The defining feature of joint ownership is this right of survivorship; its absence marks ownership-in-common.

The Concept of Possession

Possession is, in Salmond's words, the most basic relation between a person and a thing — so fundamental that it is prima facie evidence of ownership, and so weighty in practice that the law treats it as "nine points out of ten". The meaning of the maxim is evidential: the person in possession is presumed owner, and one who interferes must prove a better right or title. Possession is notoriously difficult to define with precision because it operates at once as a fact and as a legal concept.

Legal or juristic possession requires the union of two elements. The first is corpus possessionis — effective physical control of the thing, the power to use it and to exclude others from interfering with it. The control need not be absolute; it is enough that the possessor has a general control and is capable of excluding others. The second is animus possidendi — the intention to hold the thing to the exclusion of others. This intention need not be a claim of ownership and need not be exercised on one's own behalf: a bailee, a mortgagee, an agent, a servant or a trustee may all possess on account of another, and a bailee or mortgagee has juristic possession even though he cannot exclude the real owner. The claim must be exclusive as against the world generally, but it need not be absolute.

Possession in Fact and Possession in Law

Jurisprudence distinguishes possession in fact from possession in law, because the two do not always coincide. Possession in fact (or de facto possession) is the actual physical relationship of control between a person and a thing — to possess is to have physical control, whether absolute, as with a ring one wears, or relative, as with the power to keep a thing safe by excluding others. Possession in law (or de jure possession) is the possession the law recognises and protects, attaching legal consequences to the factual relationship.

The two may diverge. A host's dinner guest has physical control of the spoon and fork placed before him, yet has only physical custody, not legal possession — he is not entitled to carry the cutlery away, because legal possession remains with the host. Conversely, possession in law may exist without present knowledge: a man who owns a ring lying at the bottom of his well has legal possession of it though he is unaware it is there, so that a finder cannot defeat his title — the principle illustrated by South Staffordshire Water Co v Sharman, discussed below. Even a child clutching a coin, though powerless to exclude an adult, has legal possession. The law thus sometimes attributes possession where there is little factual control, and withholds it where there is much.

Mediate and Immediate Possession

Possession may be mediate or immediate according to whether it is held directly or through another. Immediate possession (or direct possession) is acquired and held by a person personally and directly. Mediate possession (or indirect possession) is held by one person through the agency of another who has immediate possession. If A sends B to buy goods for A, then the moment B acquires the goods, B has immediate possession while A has mediate possession of the same goods at the same time.

Salmond identifies three forms of mediate possession: that acquired through an agent or servant who holds on the principal's behalf; that acquired through a borrower or tenant who holds the thing at will or for a term; and that acquired through a pawnee or bailee who holds under a contract recognising the bailor's superior right. The characteristic feature is that two persons are in possession of the same thing simultaneously — landlord and tenant, principal and agent, bailor and bailee — the one mediately, the other immediately. This was illustrated where A bought a horse from B and then lent it back to B for a month: the horse was held to have been delivered to A, who thereby acquired possession, while B held it merely as bailee, in immediate possession on A's behalf.

Ownership and Possession Distinguished

The distinction between ownership and possession is the hinge of the law of property, and the contrast can be drawn along several axes. As to nature, possession is the de facto relation of control between a person and a thing, whereas ownership is the de jure relation — the right vested in a person to the residuary use of the thing. As to the rights involved, possession may exist without legal title, and a possessor's incidents are uncertain, whereas the incidents of ownership are definite: the rights to possess, use, enjoy, alienate and destroy are exclusively the owner's, and the owner has a title vested in him.

As to duration, possession is generally temporary and transient, whereas ownership endures and is, in principle, perpetual. As to the legal order, possession deals with a purely factual relationship and may be legal, non-legal or even a pre-legal concept — it can exist in a state of nature — whereas ownership in its strict sense is a creature of a developed system of law and presupposes the legal order that defines it. As Salmond and Pollock both stressed, possession is the objective realisation of ownership: in the normal case the two coincide in the same person, and possession is the visible sign by which ownership is recognised. The law's preference for protecting possession reflects this: it is the de facto exercise of a claim that the law guards, leaving the de jure question of title to be resolved afterwards. The crystallisation of these categories was a project of the historical school and of analytical jurists alike.

Possessory Remedies and the Finder's Title

Because the law protects possession independently of ownership, it provides possessory remedies — remedies available to a possessor against anyone who cannot show a better title. Even a wrongdoer in possession has a good title against all the world except the true owner, who must himself proceed according to law to recover the thing rather than seize it. Salmond gives three reasons for protecting possession in this way: the historical imperfection and delay of the early proprietary remedies, which made it expedient to restore the status quo first and litigate title afterwards; the difficulty of proving ownership, prior possession being convenient prima facie proof of title; and the law's settled hostility to violent self-help, which possessory remedies are designed to forestall. A defendant who has violated another's possession is not permitted to set up the jus tertii — the title of some third party — as a defence.

The leading authority is Armory v Delamirie (1722) 1 Strange 505, where a chimney-sweeper's boy found a jewel and took it to a goldsmith's shop for valuation; the goldsmith's apprentice removed the stones and refused to return them. The Court of King's Bench held that the finder, though he did not acquire absolute ownership, had such a property in the jewel as would entitle him to keep it against all but the rightful owner, and could maintain trover against the goldsmith. Where the value of the missing stones was uncertain, the court directed the jury to presume the strongest case against the wrongdoer. The same principle governed Bridges v Hawkesworth (1851) 21 LJQB 75, where a customer found a parcel of banknotes on the floor of a shop; the true owner never came forward, and the finder was held entitled as against the shopkeeper, the notes having been found in a part of the shop to which the public had access and over which the occupier exercised no special control.

Finder versus Occupier of Land

The finder's title is not always paramount; it may yield to the prior possession of the occupier of the land where the thing is found, and the cases turn on the degree of control the occupier exercises. In South Staffordshire Water Co v Sharman [1896] 2 QB 44, a workman engaged to clean out a pool on the company's land found two gold rings in the mud at the bottom. The Queen's Bench, through Lord Russell CJ, held that the rings belonged to the company and not to the finder, laying down the principle that where a person has possession of land with a manifest intention to exercise control over it and the things upon it, he is presumed to possess things found in or attached to that land, even though he is unaware of their existence. This is the converse of Bridges: the determining factor is the occupier's intention to control.

The contrasting result appears in Hannah v Peel [1945] KB 509, where a soldier billeted in a requisitioned house found a brooch on the top of a window-frame. The owner of the house, Major Peel, had never himself occupied it and was unaware of the brooch. Birkett J held that the finder's claim prevailed: an occupier does not have a superior right to a chattel unattached to the land and lying on its surface unless he had previously been physically in possession or manifested an intention to control the premises and things on them. The same emphasis on the occupier's controlling intention upheld the conviction in Hibbert v McKiernan [1948] 2 KB 142, where a trespasser who collected lost golf balls from a club's course was held guilty of larceny, the club having sufficiently manifested its intention to exclude others and so to possess all the balls lost on its land. Together these cases refine the principle of Sharman: the occupier prevails where, and only where, his control over the locus is real and manifest.

Title, Vestitive Facts and the Limits of Ownership

Behind every right of ownership stands a title — the vestitive fact from which the right flows. Salmond classifies vestitive facts into three: investitive facts, which create rights and may be original (as where a fisherman catches a fish and acquires an original title) or derivative (as where he sells the fish and the buyer takes a derivative title); divestitive facts, which destroy or extinguish rights, as where the fisherman's title is lost on sale or a creditor's right is extinguished by payment; and alienative facts, which transfer rights from one person to another. These facts may operate voluntarily, as by agreement, or involuntarily, as by prescription or death.

Finally, ownership and possession alike are bounded by the doctrine of necessity. Jus necessitatis — necessity knows no law (necessitas non habet legem) — recognises that in extreme circumstances a person may interfere with the property, or even the life, of another, choosing the lesser of conflicting values: one may pull down a neighbour's house to arrest the spread of fire. But the defence has limits, fixed by R v Dudley and Stephens (1884) 14 QBD 273, where two shipwrecked sailors adrift in an open boat killed and ate the cabin-boy to survive. The court, through Lord Coleridge CJ, held that necessity is no defence to a charge of murder; the sailors were convicted, though the death sentence was later commuted to six months' imprisonment. The case marks the outer boundary of the rights one person may assert over the body or property of another, and so the outer boundary of the law of property itself. These themes connect ownership to the wider study of rights and obligations surveyed in the introduction to jurisprudence.

Frequently asked questions

What is the difference between ownership and possession in jurisprudence?

Ownership is the de jure relation — a right vested in a person to the residuary use of a thing, with definite incidents (possession, use, enjoyment, alienation, destruction) and indefinite duration. Possession is the de facto relation of physical control, generally temporary, that may exist without legal title. They usually coincide in one person, but a bailee possesses without owning, and an owner whose goods are leased owns without immediate possession. Salmond called possession the objective realisation of ownership.

What are the incidents of ownership according to Salmond?

Salmond identifies five principal incidents: the right of possession (which persists even when the thing is leased or pledged); the right of use and enjoyment; the right to alienate, encumber or destroy; indeterminate duration (ownership has no fixed term and passes to heirs on death); and the residuary character (whatever remains after all lesser interests are carved out vests in the owner, and reverts to him when they end). Salmond warned that calling ownership absolute is a fallacy, since the law may restrict the use of property.

Why does the finder of lost goods have a good title?

Because the law protects possession against everyone but the true owner. In Armory v Delamirie (1722) a chimney-sweeper's boy who found a jewel was held entitled to keep it against all but the rightful owner and could sue the goldsmith who kept the stones. The finder acquires not absolute ownership but a possessory title, good against the whole world except a person with a better right. The same principle gave the finder of banknotes the better title in Bridges v Hawkesworth (1851).

When does the occupier of land defeat the finder's claim?

When the occupier exercises a manifest intention to control the land and the things on it. In South Staffordshire Water Co v Sharman [1896] 2 QB 44, rings found in the mud of a pool belonged to the landowning company, not the workman who found them, because the occupier is presumed to possess things in or attached to his land. But in Hannah v Peel [1945] KB 509 the finder of a brooch prevailed because the owner had never occupied the house. The decisive factor is the occupier's real and manifest control.

What is the distinction between vested and contingent ownership?

Vested ownership is ownership whose title is presently complete and absolute — the investitive fact is complete. Contingent ownership is conditional: it becomes perfect only on the fulfilment of a condition precedent, so the investitive fact is incomplete. In Salmond's example, a gift to A on the death of W "if A is then living" gives A a contingent interest until W dies. A contingent interest is nonetheless a present, transferable proprietary interest — more than a mere chance or spes successionis.

Can necessity justify interference with another's life or property?

Necessity (jus necessitatis) may excuse interference with property in extreme circumstances — for example pulling down a house to stop a fire spreading — because the law recognises a choice between competing values. But it is no defence to murder. In R v Dudley and Stephens (1884) 14 QBD 273, shipwrecked sailors who killed and ate the cabin-boy to survive were convicted of murder; the sanctity of human life prevailed over necessity, though the death sentence was later commuted.