What is happening?

Who is on the lease usually decides who has which rights. A co-tenant named on the lease generally has rights directly against the landlord. Someone who sublets from a tenant, or who lives in a unit without being named on the lease, often has a relationship with that tenant rather than with the owner — which can mean different protections, or fewer.

Many leases also make co-tenants jointly responsible for the whole rent, meaning each person can be pursued for the full amount rather than a share. Whether that is the case, and what happens when one roommate leaves, is a lease-and-state question.

• Find out whose names are actually on the lease and any addenda.
• Keep your own record of what you paid, to whom, and when — including transfers between roommates.
• Get any roommate agreement in writing, even a plain one.
• If you are subletting, keep the written permission if there was any, and the sublease.
• Tell legal aid the exact arrangement — it changes which rules apply.

Protections are often narrower when the property owner lives on site, when you share a kitchen or bathroom with the owner, or when your arrangement is legally a lodger or roomer rather than a tenancy. Some states exclude these situations from parts of the landlord–tenant statute, and a few handle removal through an entirely different process.

This is not a reason to assume you have no rights — it is a reason to say so explicitly when you contact legal aid, because it moves the question into a different part of the law. The same is true of hotels, motels, and extended-stays, which are frequently treated separately.

Ending a fixed-term lease early usually has a cost, and the size of that cost depends on state law and on the lease. Some states require a landlord to try to re-rent the unit rather than simply collect the remaining term. Some provide specific early-termination rights — commonly for military service, and in many states for survivors of domestic violence, sometimes for health or safety reasons.

Because giving notice can itself trigger obligations, this is a situation where one free call to legal aid before acting is usually worth more than any amount of reading. If safety is the reason you need to leave, the domestic violence hotline has housing advocates and that call is free and confidential.