Cotenancy

Cotenancy is the legal arrangement when two or more parties own undivided interests in the same property. Each cotenant has the right to use the entire property, but no cotenant has the exclusive right to any specific physical portion of it. This is the default outcome when mineral rights are inherited by multiple heirs without explicit partition: each heir becomes a cotenant in the entire mineral estate.

The “undivided” nature is the key concept. If three siblings inherit equal shares of mineral rights to a 320-acre tract, each holds an undivided 1/3 interest in the entire 320 acres. None of them owns a specific 107-acre portion. Each has the right to lease the property, sign deeds, and collect royalties on their proportional share.

Cotenancy creates practical complications when cotenants disagree. If two siblings want to lease and a third refuses, the property becomes harder (sometimes impossible) to develop voluntarily. The leasing siblings typically can sign leases for their own undivided interest, but the operator may not want to drill on a property where the lease is clouded by an unleased fraction.

Cotenancy law varies meaningfully across states. Some states (like Texas) follow the “majority rule,” where cotenants holding a majority of the interest can effectively bind the minority through unanimous-rule lease decisions, with the non-consenting cotenant entitled to their proportional share of bonus and royalty but unable to block the lease. Other states require unanimity, making a single holdout problematic.

West Virginia and Pennsylvania historically required unanimous consent, which created significant practical problems when multi-generation Marcellus inheritances had dozens of cotenants spread across the country. Both states have since modified their cotenancy rules to allow leasing to proceed with consent of a supermajority of cotenants, which has unlocked development of properties that were previously stuck. The exact thresholds and procedures vary by state, so anyone facing an actual cotenancy question should verify current state law with an attorney before relying on these descriptions.

For inheritors, the most common cotenancy issue is communication. Multiple heirs scattered across the country, often unaware of each other, each holding a fraction of the same property. Resolving this requires coordinated outreach, title verification, and (often) the patience to assemble a coherent leasing group from disparate inheritors. This is one of the more time-consuming aspects of an inherited mineral portfolio with multiple heirs.

Cotenants can also “partition” the property if they cannot agree, splitting the undivided interests into separately-owned tracts. This is rare for mineral rights (since most mineral tracts are not easily divisible without affecting value), but the option exists in most states.