Roommate Agreements in Texas: What They Do (and Don't) Protect

Texas landlord-tenant law regulates the relationship between a landlord and tenant — it doesn't say much about the relationship between you and the person you're splitting rent with. That gap is exactly why a written roommate agreement matters: it's the document that actually governs who pays what, what happens if someone leaves early, and how you'll handle it if things go sideways.

Your lease probably makes you jointly responsible for everything

If you and your roommate(s) are both named on the lease, you're very likely "jointly and severally liable" for the whole rent — meaning your landlord can legally demand the full rent amount from you alone if your roommate stops paying their share, not just your portion. This is standard lease language, not a Texas-specific statute, but it's the single most important thing to understand before you sign a lease with someone: the landlord's ability to collect from you doesn't depend on your roommate holding up their end.

A roommate agreement doesn't change what you owe the landlord — you can't contract around your lease obligations to a third party who isn't part of that agreement. What it does is give you something to enforce directly against your roommate if they don't pay you back, separate from (and in addition to) whatever the lease says.

What a roommate agreement should actually cover

• Rent split and due dates — the exact dollar amount and day each person owes, including how utilities, internet, and shared supplies are divided.
• The security deposit — who paid what share up front, and how it will be divided when it's returned (Texas Property Code §92.103 requires the landlord to return the deposit to the tenant(s) named on the lease — it doesn't sort out the split between roommates, so your agreement should).
• Room assignments and shared-space rules — who gets which bedroom, and any ground rules for guests, noise, cleaning, or shared spaces.
• What happens if someone wants to leave early — notice period, finding a replacement roommate, and how much notice is fair before someone moves out and leaves the others covering their share.
• What happens if someone stops paying — a clear process (and consequence) rather than an argument in the moment.

Adding or replacing a roommate mid-lease

If someone wants to move in partway through the lease, or an existing roommate wants to leave and be replaced, that generally requires your landlord's consent to add or remove someone from the lease itself — most Texas leases require written landlord approval for this, and doing it without approval can put the whole household at risk if the landlord considers it an unauthorized occupant or a lease violation. Ask your landlord in writing before treating a new roommate as a lease-holder, and get any approval in writing too.

A roommate agreement is a contract between roommates, not with the landlord

It's worth being clear-eyed about what this document can and can't do: it's a private agreement between you and your roommate(s), enforceable between the two of you (potentially in small claims / Justice of the Peace court if it comes to that), but it has no effect on your landlord or your obligations under the lease. Your landlord isn't a party to it and generally won't be involved in enforcing it.

Frequently asked questions

If my roommate doesn't pay their share, can my landlord come after me for the whole rent?

If you're both named on the lease, most Texas leases make you jointly and severally liable, meaning yes — your landlord can typically demand the full rent from you regardless of what your roommate owes you personally. A roommate agreement gives you a way to recover that money from your roommate directly, but it doesn't change what the landlord can demand from you.

Does a roommate agreement need to be in writing to matter?

It doesn't have to be, but it should be. A written, signed agreement is far easier to enforce and far harder to dispute later than an informal understanding — especially if money changes hands based on it.

Can I add a roommate to my lease without asking my landlord?

Generally no — most Texas leases require the landlord's written consent before someone new moves in as a co-tenant, and an unauthorized occupant can be treated as a lease violation. Ask first, in writing.

What happens to the security deposit split when we move out?

Texas Property Code §92.103 requires your landlord to return the deposit to the tenant(s) on the lease within 30 days of move-out — it doesn't specify how roommates divide that money among themselves. Spell out the split in your roommate agreement so there's no dispute when the check arrives.

Splitting the deposit fairly starts with documenting the unit's condition together — see our move-in/move-out condition checklist.