Tenancy in Common is the Default Form of Concurrent Estate
In which each owner, referred to as a tenant in common, is regarded by the law as owning separate and distinct shares of the same property. By default, all co-owners own equal shares, but their interests may differ in size. (But in the UK a Joint Tenancy is necessary for co-ownership of a legal estate whether freehold or leasehold. A legal estate cannot subsist or be created in an undivided share in land (LPA 1925, s 1(6). The joint tenancy at law can never become a tenancy in common (LPA 1925, s 36(2))
This form of ownership is most common where the co-owners are not married or have contributed different amounts to the acquisition of the property. The assets of a commercial partnership are normally owned on a tenancy in common basis. Also, if the joint owners had attempted to use a form of joint ownership, such as a joint tenancy with right of survivorship or a tenancy by the entirety, and the effort was for some reason invalid, the joint owners would by default be classed as tenants in common. If conclusive evidence is not available of the desire to create a tenancy with rights of survivorship or a tenancy by the entirety, a court will normally determine that a tenancy in common has in fact been created.
Tenants in common have no right of survivorship, meaning that if one tenant in common dies, that tenant's interest in the property will be part of his or her estate and pass by inheritance to that owner's devisees or heirs, either by will, or by intestate succession. Also, as each joint owner has an interest in the property, they may, in the absence of any restriction agreed to between the joint owners, sell or otherwise deal with the interest in the property (e.g. mortgage it) during their lifetime, like any other property interest.
Destruction of a tenancy in common
Where any party to a tenancy in common wishes to terminate (usually termed "destroy") the joint interest, he or she may obtain a partition of the property. This is a division of the land into distinctly owned lots, if such division is legally permitted under zoning and other local land use restrictions. Where such division is not permitted, a forced sale of the property is the only alternative, followed by a division of the proceeds.
If the parties are unable to agree to a partition, any or all of them may seek the ruling of a court to determine how the land should be divided - physically division between the joint owners (partition in kind), leaving each with ownership of a portion of the property representing their share. Courts may also order a partition by sale in which the property is sold and the proceeds are distributed to the owners. Where local law does not permit physical division, the court must order a partition by sale.
Each co-owner is entitled to partition as a matter of right, meaning that the court will order a partition at the request of any of the co-owners. The only exception to this general rule is where the co-owners have agreed, either expressly or impliedly, to waive the right of partition. The right may be waived either permanently, for a specific period of time, or under certain conditions.
A joint tenancy or joint tenancy with right of survivorship (JTROS or JTWROS) is a type of concurrent estate in which co-owners have a right of survivorship, meaning that if one owner dies, that owner's interest in the property will pass to the surviving owner or owners by operation of law. The deceased owner's interest in the property simply evaporates and cannot be inherited by his or her heirs, and avoiding probate. Under this type of ownership, the last owner living owns all the property, and on his or her death the property will form part of their estate. Unlike a tenancy in common, where co-owners may have unequal interests in a property, joint co-owners have an equal share in the property.
It is important to note, however, that creditors' claims against the deceased owner's estate may, under certain circumstances, be satisfied by the portion of ownership previously owned by the deceased, but now owned by the survivor or survivors. In other words, the deceased's liabilities can sometimes remain attached to the property.
This form of ownership is common between husband and wife, and parent and child, and in any other situation where parties want ownership to pass immediately and automatically to the survivor. For bank and brokerage accounts held in this fashion, the acronym JTWROS is commonly appended to the account name as evidence of the owners' intent.
To create a joint tenancy, clear language indicating that intent must be used - eg. "to AB and CD as joint tenants with right of survivorship, and not as tenants in common". This long form of wording may be especially appropriate in those jurisdictions which use the phrase "joint tenancy" as synonymous with a tenancy in common. Shorter forms such as "to AB and CD as joint tenants" or "to AB and CD jointly" can be used in most jurisdictions. Words to that effect may be used by the parties in the deed of conveyance or other instrument of transfer of title, or by a testator in a will, or in an inter vivos trust deed.
If a testator leaves property in a will to several beneficiaries "jointly" and one or more of those named beneficiaries dies before the will takes effect, then the survivors of those named beneficiaries will inherit the whole property on a joint tenancy basis. But if these named beneficiaries had been bequethed the property on a tenancy in common basis, but died before the will took effect, then those beneficiaries' heirs would in turn inherit their share immediately (the named beneficiary being deceased).
The four unities
Main article: Four unities
To create a joint tenancy, the co-owners must share "four unities":
Time - the co-owners must acquire the property at the same time.
Title - the co-owners must have the same title to the property. If a condition applies to one owner and not another, there is no unity of title.
Interest - the co-owners must have the same interest in the property. For example, one owner can't have a life estate and another a fee simple absolute.
Possession - the co-owners must have an equal right to possess the whole property.
If any of these elements is missing, the joint tenancy is ineffective, and the joint tenancy will be treated as a tenancy in common in equal shares.
Breaking a joint tenancy
If any joint co-owner deals in any way with a property inconsistent with a joint tenancy, that co-owner will be treated as having terminated (sometimes called "breaking") the joint tenancy, as far as it relates to that co-owner. In relation to the other co-owners, if more than one, they remain joint owners of the remaining interest. The dealing may be a conveyance or sale of the co-owner's share in the property. The position in relation to a mortgage is more doubtful (see below). For example, if one of three joint co-owners conveys his or her share in the property to a third party, the third party owns a 1/3rd share on a tenancy in common basis, while the other two original joint co-owners continue to hold the remaining 2/3rds on a joint tenancy basis. This result arises because the "unity of time" is broken: that is, because on the transfer the timing of the new interest is different from the original one. If it is desired to continue to maintain a joint tenancy, then the three original joint co-owners would need to transfer, in the one instrument, the joint interest to the two remaining joint co-owners and the new joint co-owner.
A joint co-owner may break a joint tenancy and maintain an interest in the property. Most jurisdictions permit a joint owner to break a joint tenancy by the execution of a document to that effect. In those jurisdiction which retain the old common law requirements, an actual exchange with a straw man is required. This requires another person to "buy" the property from the joint co-owner for some nominal consideration, followed immediately by a sale-back to the co-owner at the same price. In either case, the joint tenancy will revert to a tenancy in common as to that owner's interest in the property.
There is a big problem that is possible with the simple document execution method. In the straw man approach, there are witnesses to the transfer. With the document, there may not be witnesses. With either method, as soon as the break occurs, it works both ways. Because there may not be witnesses, the party with the document could take advantage of that fact and hide the document when the other party dies.
Effect of a mortgage
If one joint co-owner takes out a mortgage on jointly owned property, in some jurisdictions this may terminate the joint tenancy. Jurisdictions which use a title theory in this situation treat a mortgage as an actual conveyance of title until the mortgage is repaid, if not permanently. In such jurisdictions, the taking of a mortgage by one owner terminates the joint tenancy as to that co-owner.
However, in jurisdictions which use the lien theory, the mortgage merely places a lien on the property, leaving the joint tenancy undisturbed. As a lien is not enough to terminate a joint tenancy, if the debtor dies before the creditor sues, the creditor is left with no claim against the property, as the debtor's interest in the property evaporates and automatically vests in the other surviving co-owners.
Tenancy by the entirety
A tenancy by the entirety (sometimes called a tenancy by the entireties) is a type of concurrent estate formerly available only to married couples, where ownership of property is treated as though the couple were a single legal person. (In the State of Hawaii, the option of Tenants by the Entirety ownership is also available to domestic partners in a registered "Reciprocal Beneficiary Relationship"; Vermont's Civil Union statute qualifies parties to a civil union for tenancy by the entirety). Like a JTWROS, the tenancy by the entirety also encompasses a right of survivorship, so if one spouse dies, the entire interest in the property passes to the surviving spouse, without going through probate.
In some jurisdictions, to create a tenancy by the entirety the parties must specify in the deed that the property is being conveyed to the couple "as tenants by the entirety," while in others, a conveyance to a married couple is presumed to create a tenancy by the entirety unless the deed specifies otherwise. Also, besides sharing the four unities necessary to create a joint tenancy with right of survivorship - time, title, interest, and possession - there must also be the fifth unity of marriage. However, unlike a JTWROS, neither party in a tenancy by the entirety has a unilateral right to sever the tenancy. The termination of the tenancy or any dealing with any part of the property requires the consent of both spouses. A divorce breaks the unity of marriage, leaving the default tenancy, which may be a tenancy in common in equal shares. Many US jurisdictions no longer recognize tenancies by the entirety. Where it is recognized, benefits can include the ability to shield the property from creditors of only one spouse, as well as the ability to partially shield the property where only one spouse is filing a petition for bankruptcy relief. If a non-debtor spouse in a tenancy by the entirety survives a debtor spouse, the lien can never be enforced against the property. On the other hand, if a debtor spouse survives a non-debtor spouse, the lien may be enforced against the whole property, not merely the debtor spouse's original half-interest.
Note that every country and every state in the United States has at least minor variations on the law as applied to joint ownership of property. These links generally discuss the law as applied in the state from which they originate:
There is nothing in the laws of Massachusetts, or New York as stated in Coraccio, to prevent one tenant by the entirety from conveying her own or his own interest in the property, subject to the continuing rights of the other. While it is generally believed that one tenant by the entirety cannot convey their interest because the tenancy cannot be severed, rather it is the survivorship rights of the other that cannot be severed. Thus, if a husband conveyed his interest in the property held as tenants by the entirety to his brother, the husband no longer owns an interest in the property. The brother takes his (the husband's) place within the tenancy. Here is the tricky part: if the wife dies then the husband's brother acquires all interest in the real estate. If the husband dies before the wife then it all goes to her free and clear and the husband's brother has nothing. Some conveyancers have treated deeds by one tenant by the entirety as null. However, such a deed conveys the interest of the grantor in the property subject to the survivorship rights of the other co-tenant.
Tenancy By the Entirety at Common Law/effect of a conveyance by one: