Definition
In common describes the shared, undivided character of a right, title, interest, or use held by two or more persons simultaneously. Where property or a privilege is held in common, no single holder has an exclusive or apportioned claim to any particular physical portion; instead, each holds an equal and concurrent entitlement to the whole.
The phrase operates most frequently in property law, where it designates the basis of tenancy in common — a form of concurrent ownership in which multiple persons hold undivided interests in the same property without the right of survivorship. But the phrase is not exclusive to property ownership. Courts and statutes apply it to describe shared use of ways, waters, profits, and other incorporeal rights, as well as to joint entitlements in litigation contexts.
Common Language
Modern common usage (Wiktionary): "Shared with one or more others"; "held in joint possession"; "possessing similar or identical qualities."
Historical common usage (Webster's 1913): Belonging equally to more than one; not private; public; general; ordinary.
The ordinary phrase "in common" aligns closely with its legal meaning in the ownership sense — shared, not individually apportioned — but the legal term carries structural weight that the colloquial phrase does not. In law, "in common" is not merely descriptive of sharing; it signals a defined legal relationship with consequences for alienability, creditors' rights, partition rights, and survivorship. A researcher who reads "in common" in a historical deed or court opinion should understand it as a term of legal art establishing the mode of co-ownership, not simply a casual statement that two parties share something.
Common Confusion
In common is most frequently confused with joint tenancy. Both are forms of concurrent ownership, but they differ on a critical point: joint tenancy carries the right of survivorship (a deceased co-owner's share passes automatically to surviving co-owners), while tenancy in common does not (each owner's share passes through their estate). Historically, the law favored joint tenancy; modern law in most jurisdictions reverses that presumption and treats ambiguous grants as creating a tenancy in common. A researcher encountering the phrase "held in common" in older sources should not assume it forecloses joint tenancy without examining the full grant and the applicable period's default rules.
"In common" should also be distinguished from community property, which is a distinct marital ownership regime arising by operation of law in certain jurisdictions, not from the terms of a conveyance.
Why It Matters in Research
The phrase appears across centuries of deed language, court opinions, and statutes, but its legal weight shifts depending on period and jurisdiction. Several navigational points matter:
Presumption reversal. Pre-nineteenth-century English common law presumed joint tenancy unless a grant expressly created a tenancy in common. American law gradually reversed this, making tenancy in common the default for ambiguous grants. When reading historical sources, the absence of "in common" in a conveyance does not mean joint tenancy was intended — but neither does its presence always resolve the question.
Incorporeal rights. "In common" frequently describes shared use rights in property law beyond ownership — common of pasture, common of piscary, rights of way held by multiple parties. These uses appear extensively in older English sources and in early American cases drawing on that tradition. Researchers should not assume that every historical use of the phrase signals co-ownership of fee title.
Litigation contexts. Modern doctrine has extended "common" concepts into procedural and remedies law. The common fund doctrine (equity) and the common interest privilege (evidence) each carry their own analytical frameworks. A corpus search on "in common" will surface these contexts alongside property results — the Encyclopedia cross-references above help distinguish them.
Corpus traps. Searches across historical legal materials will return "in common" both as a term of art and as ordinary prose ("as is common in such cases," "in common parlance"). Phrase-level searching is necessary; isolated keyword searches will return significant noise.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) defines the phrase as: "Shared in respect to title, use, or enjoyment, without apportionment or division into individual parts; held by several for the equal advantage, use, or enjoyment of all."
This definition is serviceable and accurate as far as it goes. It correctly identifies the core feature — the absence of apportionment — and extends the phrase beyond ownership to use and enjoyment. The case citations Black's appends (Hewit v. Jewell, Chambers v. Harrington, Walker v. Dunshee) span Iowa, federal, and Pennsylvania sources, reflecting that the definition was understood as broadly applicable across American jurisdictions by the late nineteenth century.
What the historical dictionary entry does not capture: the procedural consequences of holding in common (particularly partition rights), the presumption dynamics that govern ambiguous grants, or the modern extensions of "common" concepts into non-property doctrine. Researchers should treat Black's definition as a reliable foundation for property and use-right contexts, but consult secondary sources for the full legal architecture those shared interests generate.
Jurisdictional Note
Tenancy in common is recognized in all U.S. jurisdictions, but the default presumption rules, partition procedures, and treatment of a co-tenant's creditors vary by state. Community property states (including California, Texas, and several others) apply a separate marital co-ownership regime that operates independently of "in common" conveyance language. Researchers working with deeds or instruments from community property states should confirm which regime governs before applying common-law tenancy-in-common analysis.
Encyclopedia Cross-Reference
property_10: Concurrent Ownership — Tenancy in Common (The Law Mind Property Law Encyclopedia) — primary reference for ownership structure, partition, and alienability.
remedies_65: Common Fund and Common Benefit Doctrines (The Law Mind Remedies & Equity Encyclopedia) — for the fee-shifting doctrine that extends "common" concepts into litigation proceeds.
civpro_165: Common Interest Doctrine and Joint Defense Privilege (The Law Mind Civil Procedure & Evidence Encyclopedia) — for shared privilege in multi-party litigation.