The short version
- A joint lease is one debt, not several shares. Each tenant is answerable for the entire rent, so the landlord may demand all of it from any one of you and is under no duty to chase the person who actually defaulted.
- The roommate agreement binds the roommates, never the landlord. It is worth having — it fixes what each person's share is, which is exactly what a contribution claim needs — but it is not a defence to the landlord's demand.
- Only three things take a name off a joint lease: a written release or novation from the landlord, a substitution the landlord accepts in writing, or an assignment or sublet consented to under the lease. Moving out is not one of them.
- The deposit is one deposit for the unit. California Civil Code § 1950.5(h)(1)(C) has the landlord return it by a check payable to all adult tenants on the lease when the tenancy terminates — so a departing roommate is normally paid out by the roommates, not by the landlord.
A landlord who is owed money looks at the lease, sees three signatures, and sends the demand to whoever answers the phone. That is not sharp practice. It is what the document says he may do.
One lease is one debt, not three shares
The clause reads something like "each tenant is jointly and severally liable for all obligations under this lease". Both halves matter. Joint means the obligation is a single one owed by all of you together. Several means the same whole obligation is also owed by each of you on your own. Neither half divides anything. The distinction between them is procedural — whether the landlord has to sue all of you together or may pick one — and not proportional.
That is why the default rule is less protective than it sounds. California Civil Code § 1431 provides that "an obligation imposed upon several persons ... is presumed to be joint, and not several". A tenant reading that for the first time usually hears a limit. It is not one: a joint obligation is still an obligation for the whole amount. The express "jointly and severally" in the lease is doing one job, which is to spare the landlord the trouble of joining everyone. It is not what makes you liable for your roommate's share. Signing a lease for a whole flat did that.
So "I paid my third" is not an answer to a demand, and not a defence to a non-payment eviction either. The rent is short and the landlord chooses the target — usually the tenant with the steadiest income and something to lose, which, if you are reading this, is you.
Check whether you signed one lease or one lease per room
Find out which arrangement you are in first, because the answer is on the first page and it decides everything after it. Purpose-built student housing and many professional house-shares use individual leases — one agreement per bedroom, each tenant liable only for their own rent. Ordinary lettings almost never do.
Which document did you actually sign?
Does one agreement name every occupant, or does each person have their own?
One agreement, everyone signs it
A joint tenancy. Each of you is exposed to the whole rent, the whole damage bill and the whole holdover period, whatever the private split says.
A separate agreement per room
Your exposure stops at your own rent. A defaulting neighbour is the landlord's problem, though shared-area damage is usually still charged across everyone.
The roommate agreement does not reach the landlord
This is where most people go wrong, and not through carelessness. They wrote the agreement precisely because they wanted the split to be enforceable. It is — against each other. It creates no rights in the landlord and imposes none on him.
Two contracts, two different sets of parties
The lease
- Landlord and every tenant
- Rent for the whole unit
- Damage and holdover
- The single deposit
What both describe
- Monthly rent
- Deposit money
- Who lives there
The roommate agreement
- Tenants only
- Each person's share
- Notice before leaving
- Utilities and guests
Getting a name off the lease needs the landlord's signature
A departing tenant has a small, closed set of exits, and each ends in a document the landlord has signed. Handing back keys releases nothing. Nor does an email saying you have moved out, nor the others agreeing to cover you.
The exits, in ascending order of what they cost you
- A screening fee, and the hunt
Substitute a replacement tenant
A new tenant joins the lease and you are released in the same document. Landlords accept this most readily, because their security is unchanged.
- Your name usually stays on
Assign or sublet under the consent clause
A sublet leaves you liable to the landlord and adds a subtenant who is liable to you. An assignment transfers the interest but rarely the liability unless the release is express.
- Often a lump sum
Negotiated release or novation
A signed discharge. A novation goes further and replaces the lease with a new one among the remaining parties — cleanest, and hardest to get.
- The whole rent to the end of the term
Leave and hope
You stay a tenant of record, exposed to rent, damage and whatever the tenancy becomes after the fixed term.
Landlords say yes to substitution far more often than to release, because it costs them nothing. Ask for that first.
How much leverage you have is state-specific. New York Real Property Law § 226-b gives a real one: consent to an assignment may be "unconditionally withheld without cause", but where the owner withholds it unreasonably the tenant may demand release from the lease on thirty days' notice, and that release is the tenant's sole remedy. For sublets in a building of four or more residential units, consent "shall not be unreasonably withheld", and a landlord who does not answer a proper request within thirty days is deemed to have consented. California has no residential equivalent — Civil Code § 1995.010 applies its transfer-restriction chapter only to leases "for other than residential purposes" — so a tenant there is left with whatever the consent clause says. The rules on subletting turn entirely on that wording.
Put the release in writing
Free full text. Whatever the landlord agrees verbally, the only thing that ends your liability is a dated document naming you, naming the date, and saying the landlord discharges you from the lease.
What the departing tenant is still on the hook for
Everything the lease covers, not merely the rent, and not merely the period they lived there. Damage caused by a roommate they never met is charged against the tenancy, and every tenant of record answers for it. So are late fees, utility arrears billed to the unit, and the landlord's costs where the lease shifts them.
The holdover period is the one nobody sees coming. Where a fixed term ends and someone stays on with rent accepted, California Civil Code § 1945 presumes the hiring renewed "on the same terms and for the same time, not exceeding one month when the rent is payable monthly". Same terms arguably means the same tenants, including the absent one who assumed their exposure ended with the term. The statute does not say which of several joint lessees the presumption attaches to when only some remain in possession, and the point is genuinely unsettled — so assume the worst until a release says otherwise, and read what a holdover tenancy turns into.
The deposit is one deposit, and it is not paid out early
A departing roommate almost always asks the landlord for their share on the way out, and almost always fails: the deposit secures the unit for the length of the tenancy, and the tenancy has not ended. California Civil Code § 1950.5(h)(1) starts the twenty-one-day clock no earlier than a notice to terminate or sixty days before a fixed term expires, and subparagraph (C) then has the landlord return the balance, where multiple adult tenants reside in the unit, "by a check made payable to all adult tenants on the rental or lease agreement" unless everyone has agreed otherwise in writing.
So the money is not the landlord's to split, and at the end it is not any one tenant's to bank. The workable answer is a private buy-out: the remaining tenants pay the leaver their contribution now and inherit both the risk and the eventual refund. New York runs on a fourteen-day itemised statement after the tenant vacates, and extended those deposit protections to rent-stabilised units for agreements entered into on or after 15 November 2025 — so two tenancies in one building can be on different rules. Price the buy-out below face value, because what comes back is what survives the deductions.
Suing the roommate, and what makes the agreement worth having
The claim exists whether or not you papered anything. A co-obligor who pays more than his share can recover the excess: California Civil Code § 1432 provides that a party to a joint, or joint and several, obligation "who satisfies more than his share of the claim against all, may require a proportionate contribution from all the parties joined with him". That is a contribution claim, and its weak point is the word share — with no agreement, you must first prove what the share was. This is the entire practical value of the document.
Small claims is the forum, and the caps are real: California allows an individual to sue for less than $12,500; in Texas the venue is the justice court, and TexasLawHelp's guidance is to prove the sum by showing each tenant's contribution to the total payment. Bring the lease, the bank records and the agreement. Do not bring self-help — a cotenant has as much right to occupy as you do, and changing the locks on one is an unlawful eviction rather than a remedy. Above the cap the calculus changes, and small claims may not be the venue.
Terms that make a roommate agreement do real work
- Each person's share as a figure, and the date it must reach the payer's account — not "we split it".
- A notice period before anyone moves out, and a duty on the leaver to propose a replacement.
- Deposit accounting: who paid in what, and a formula for buying out a leaver when they go.
- Utilities by account: whose name each is in, and a duty to transfer it out on exit — the provider is a separate creditor.
- A guest rule with a day count, past which a guest becomes an occupant who pays.
- A fixed sum or interest on arrears, so a claim has a number in it rather than an argument.
What to do before the next rent date
Pay the full rent if you can, and pay it under written protest — a short email recording that you are paying the whole sum because of the joint and several clause, that a named cotenant has defaulted, and that you reserve your rights against them. Withholding to make a point converts a contribution claim you would probably win into a non-payment case against you.
Then ask the landlord, in writing and by formal notice if the informal route stalls, for a substitution rather than a release. It is the request landlords say yes to, because it leaves them the same number of solvent names on the same lease. The person who left has every reason to help you find that replacement, and saying so is more productive than telling them what they owe. A signed substitution ends the exposure for both of you on the same day. Nothing short of a document does.
Sources
- California Civil Code § 1431 — an obligation on several persons is presumed joint
- California Civil Code § 1432 — contribution between joint and several obligors
- California Civil Code § 1945 — holding over presumed to renew on the same terms
- California Civil Code § 1950.5 — deposit return, and the check payable to all adult tenants
- California Civil Code § 1951.2 — the lessor's damages net of loss reasonably avoidable
- California Civil Code § 1995.010 — the transfer chapter applies to non-residential leases only
- New York Real Property Law § 226-b — right to sublease or assign
- New York Real Property Law § 227-e — landlord's duty to mitigate, and reletting terminating the old lease
- New York General Obligations Law § 5-905 — automatic renewal clauses inoperative without notice
- New York Attorney General — Residential Tenants' Rights Guide
- New York Homes and Community Renewal — leases, roommates and deposits
- Texas Property Code § 91.006 — landlord's duty to mitigate damages
- TexasLawHelp — Roommates
- California Courts Self Help Guide — small claims limits
General information, not legal advice. This guide explains how these documents and rules generally work. Law varies by jurisdiction and changes, and none of it is applied to your circumstances here. For anything consequential, consult a licensed attorney where you are.
Frequently asked
My roommate moved out. Am I really liable for their share of the rent?
On a joint lease, yes. The obligation is for the whole rent, and each tenant owes the whole of it separately, so the landlord may demand the full sum from any signatory and has no duty to chase the person who defaulted. Paying your own share is not a defence to a demand or to a non-payment eviction. Your recourse runs against the roommate, not against the landlord.
Does a roommate agreement protect me from the landlord?
No. It is a contract between the tenants and the landlord is not a party to it, so it cannot alter what the lease permits him to collect. Its value is downstream: it fixes what each person's share was, which is the fact a contribution claim turns on. Without it, a court reconstructs the split from bank transfers and messages, which is slower and less certain.
How do I actually get my name off a joint lease?
Only through a document the landlord signs. There are three workable forms: a substitution, where a replacement tenant joins the lease and you are released in the same instrument; an assignment or sublet consented to under the lease's consent clause; or a negotiated release or novation. Returning keys, emailing notice, or the other tenants agreeing to cover you release nothing at all.
Can I get my share of the security deposit back when I move out?
Usually not from the landlord. The deposit secures the unit for the whole tenancy, and that tenancy has not ended. California Civil Code § 1950.5(h)(1)(C) has the landlord return the balance by a check payable to all adult tenants on the lease, absent a written mutual agreement to do otherwise. The realistic route is a buy-out from the roommates who are staying, agreed in advance.
Can I sue a roommate who left without paying?
Yes, in small claims. The claim is for contribution: California Civil Code § 1432 lets a party to a joint or joint and several obligation who satisfies more than his share require a proportionate contribution from the others. California's small claims limit is under $12,500 for an individual. Bring the lease, proof of what you actually paid, and whatever fixes what each person's share was.