What Happens to a Security Deposit When Multiple Tenants Disagree in California?
What happens when roommates disagree over who gets the security deposit? California law provides a surprisingly clear answer. Learn how landlords should handle security deposit disputes between multiple tenants, including different claimed shares, conflicting forwarding addresses, and the 21-day deadline. A practical guide for rental property owners in Newport Beach, Costa Mesa, Laguna Beach, and throughout California.
Two roommates move out. One says, “I paid most of the security deposit, so send most of it to me.” The other disagrees. They provide different forwarding addresses. Neither wants the other tenant receiving the money.
What is a California landlord supposed to do?
Fortunately, California law now provides a surprisingly clear answer:
The landlord generally does not have to referee the dispute.
Effective January 1, 2026, California Civil Code § 1950.5 contains specific rules governing the return of a security deposit when multiple adult tenants reside in a rental property.
For landlords and rental property owners in Newport Beach, Costa Mesa, and throughout California, understanding this rule can help avoid becoming unnecessarily involved in a dispute between former roommates.
The Default Rule: One Check Payable to All Adult Tenants
California Civil Code § 1950.5(h)(1)(C) establishes the default rule when multiple adult tenants reside in a rental unit.
Unless the landlord and all adult tenants enter into a qualifying written mutual agreement providing otherwise, the landlord must return the remaining security deposit by a check payable to all adult tenants who are on the rental or lease agreement when the tenancy terminates.
That means a landlord generally does not need to determine which roommate originally contributed more money.
The landlord does not need to decide whether one tenant deserves 70% and another deserves 30%.
And the landlord should be cautious about accepting instructions from only one tenant directing the landlord to send that tenant some or all of the money.
Absent the required written agreement, the law provides a default: make the check payable to everyone.
Example: Two Roommates Disagree About a $6,000 Security Deposit
Consider a Newport Beach rental property occupied by two roommates.
After lawful deductions, $5,000 of their security deposit remains.
Tenant A tells the landlord:
“I originally paid $4,500 of the deposit. Send me $4,500 and give my roommate $500.”
Tenant B responds:
“That isn’t true. We split everything equally.”
What should the landlord do?
The landlord generally does not need to investigate their bank records, determine who is telling the truth, or decide how the $5,000 should be divided.
Unless everyone reaches the written agreement contemplated by Civil Code § 1950.5(h)(1)(C), the statutory default is straightforward:
Issue one $5,000 check payable to both adult tenants.
Their disagreement over their respective interests in that money does not require the landlord to become the judge of their dispute.
What If One Tenant Says, “But I Paid the Entire Deposit”?
That does not necessarily change the landlord’s statutory obligation.
There may be a legitimate financial dispute between the former roommates. One may have contributed the entire security deposit. One may claim the other owes money. They may have had a separate agreement between themselves.
But those issues are different from the landlord’s obligation under Civil Code § 1950.5.
For the landlord, the statute looks to the adult tenants on the rental or lease agreement at the time the tenancy terminates when applying the default joint-check rule.
This is one reason good property management requires more than simply determining the dollar amount of a security deposit refund. The landlord also needs to know how California law requires that refund to be delivered.
What If the Former Roommates Give Different Forwarding Addresses?
This is another situation that can cause confusion.
Imagine Tenant A moves to Irvine while Tenant B moves to Los Angeles. Both provide the landlord with forwarding addresses, and neither wants the security deposit mailed to the other.
California law again provides a practical solution.
Section 1950.5(h)(1)(C)(i) provides that, absent the required written agreement, the landlord furnishes the itemized statement by personal delivery or first-class mail to any one of the adult tenants chosen by the landlord.
In other words, the landlord does not have to obtain unanimous agreement about which former roommate’s address should be used for the statutory mailing.
If the landlord selects Tenant A, the landlord can use the forwarding address Tenant A provided.
The security deposit check itself, however, remains payable to all of the adult tenants on the rental or lease agreement at termination.
Can the Tenants Agree to Split the Security Deposit Differently?
Yes.
This is an important part of the law.
Civil Code § 1950.5(h)(1)(C)(ii) permits the landlord and all adult tenants to enter into a mutual written agreement specifying how the remaining security deposit will be returned.
For example, everyone might agree that:
- Tenant A receives 75%;
- Tenant B receives 25%; or
- one tenant receives the entire remaining deposit.
The agreement can also provide for payment by check or, when the statutory requirements are satisfied, electronic deposits to accounts designated by the respective tenants.
But there is an important distinction:
One tenant cannot unilaterally tell the landlord how to divide the money.
The alternative distribution requires a written agreement involving the landlord and all adult tenants.
If everyone agrees, great.
If they don’t, the landlord has a statutory default to follow.
What If the Tenants Cannot Agree?
This may be the most important takeaway for California landlords:
Their disagreement does not eliminate the landlord’s deadline.
A landlord generally has no later than 21 calendar days after the tenant has vacated the premises to provide the required security deposit accounting and return the remaining portion of the deposit.
California Courts likewise explains that after a tenant moves out, the landlord has 21 days to return the deposit or return the remaining deposit with the required itemized deductions.
So a landlord should not allow an argument between former roommates to leave the security deposit sitting indefinitely.
If the tenants want a different allocation, the landlord can give them an opportunity to reach an agreement.
But if they cannot reach the required agreement in time, the landlord can follow the statutory default and issue the joint check.
A Practical Approach for California Landlords
For properties we manage, we believe the cleaner approach is to address the issue before the 21-day deadline becomes a problem.
Where there are multiple adult tenants, a landlord or property manager can advise the tenants that the remaining security deposit will be issued jointly unless the landlord and all adult tenants enter into a written agreement providing for a different allocation and method of return.
For example:
Because there are multiple adult tenants on the lease, California Civil Code § 1950.5(h)(1)(C) provides that the remaining security deposit will be returned by a check payable jointly to all adult tenants unless the Housing Provider and all adult tenants enter into a written mutual agreement providing for a different allocation and method of return. If you would like the security deposit divided or returned by another method, please provide mutually agreed written instructions promptly so that the Housing Provider can timely process the security deposit within the statutory 21-day period.
If the tenants agree, the appropriate written agreement can then be prepared.
If they don’t agree, the landlord follows the statutory default.
Simple.
And, importantly, the landlord stays out of the former roommates’ financial dispute.
Does It Matter Who Originally Paid the Security Deposit?
This is a common question.
Imagine a parent wrote the original deposit check for two tenants. Or one roommate paid the entire deposit because the other did not have enough money at move-in.
Does the landlord now need to reconstruct those payments before issuing the refund?
For purposes of the default multiple-tenant return procedure in § 1950.5(h)(1)(C), the statute directs the landlord to make the refund check payable to all adult tenants on the rental or lease agreement at the time the tenancy terminates.
That provides landlords with a defined procedure without requiring them to adjudicate competing claims among the tenants.
Of course, unusual lease structures, tenant changes during the tenancy, assignments, subleases, or other circumstances can complicate the analysis.
What About Electronic Security Deposit Refunds?
California law also changed the rules concerning electronic security deposit refunds effective January 1, 2026.
But multiple-tenant situations have their own specific rules.
Section 1950.5(h)(1)(C) permits the landlord and all adult tenants to enter into a written agreement specifying a different allocation and, where applicable, electronic deposits to financial accounts designated by each adult tenant.
Without that agreement, however, the multiple-tenant provision establishes the joint-check procedure discussed above.
Frequently Asked Questions
If two roommates disagree over the security deposit, does the California landlord decide who gets what?
Generally, no. Absent the written agreement permitted by Civil Code § 1950.5(h)(1)(C), the default procedure is a check payable to all adult tenants on the rental or lease agreement when the tenancy terminates.
Can a California landlord split the security deposit 50/50 between two tenants?
Not simply because that seems fair. The statute allows a different allocation when the landlord and all adult tenants enter into the required written mutual agreement specifying how the deposit will be returned.
Without that agreement, the default is the joint check.
What if one roommate paid the entire security deposit?
That may create an issue between the roommates, but the statutory default still directs the landlord to make the remaining deposit check payable to all adult tenants on the rental or lease agreement at termination unless the required written agreement provides otherwise.
What if the tenants provide different forwarding addresses?
Absent the alternative written agreement, Civil Code § 1950.5(h)(1)(C)(i) permits the landlord to furnish the itemized statement to any one of the adult tenants chosen by the landlord. The check remains payable to all adult tenants covered by the statutory rule.
Can one tenant tell the landlord to send the entire deposit to the other tenant?
A landlord should not treat one tenant’s unilateral direction as the written mutual agreement contemplated by § 1950.5(h)(1)(C)(ii). The statute contemplates an agreement between the landlord and all adult tenants when departing from the default procedure.
How long does a California landlord have to return the security deposit?
Generally, no later than 21 calendar days after the tenant has vacated the premises, the landlord must provide the required itemized statement and return the remaining security deposit in accordance with Civil Code § 1950.5.
A disagreement among roommates does not create an automatic extension of that deadline.
Does a California landlord have to return a security deposit electronically?
California has new electronic-return requirements effective January 1, 2026, but there are special provisions for multiple adult tenants. We cover the electronic security deposit rules in detail in our separate article on electronic security deposit refunds (link here).
Why This Matters for Newport Beach and Costa Mesa Rental Property Owners
Owning rental property in Newport Beach, Costa Mesa, Corona del Mar, Newport Coast, or elsewhere in Orange County can be a fantastic long-term investment.
But California property management has become increasingly technical.
Something as seemingly simple as returning a security deposit can involve statutory deadlines, required documentation, photographs, invoices, electronic-payment rules, multiple tenants, forwarding addresses, and specific delivery requirements.
At Lucas Real Estate Group, we bring a somewhat unusual combination to property management and residential real estate.
Devin R. Lucas is a Real Estate Broker, REALTOR®, and California Real Estate Attorney. Courtney Lucas is a CPA, licensed Real Estate Salesperson, and REALTOR®.
That combination allows us to approach rental-property management not merely as rent collection and maintenance coordination, but with an understanding of the legal, tax, and transactional issues that often accompany California real estate ownership.
Through Lucas Real Estate Group, in partnership with Coldwell Banker Newport Beach and the Coldwell Banker Global Luxury program, we assist property owners with leasing and full-service property management throughout Newport Beach, Costa Mesa, and surrounding Orange County coastal communities.
Whether you plan to hold your Newport Beach or Costa Mesa investment property, professionally manage it, or eventually sell it, our goal is to help protect the property while making ownership easier.
Questions or Need Help?
Thinking of selling California real estate or looking for professional property management? We would love the opportunity to assist.
We provide full-service real estate sales and property management in Newport Beach, Costa Mesa, and surrounding Orange County communities. If you are seeking to sell or professionally manage your home or investment property, call or email anytime for a free brief consultation:
info@lucas-real-estate.com | 949-478-1623
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— Devin Lucas
Author Devin R. Lucas is a Real Estate Broker, REALTOR® and Real Estate Attorney specializing in Newport Beach, Costa Mesa, and Orange County coastal communities. Courtney Lucas, a licensed CPA, Real Estate Salesperson, and REALTOR®, provides financial insight alongside real estate services. Together, they lead Lucas Real Estate Group, operating in conjunction with Coldwell Banker.
Lucas Real Estate Group assists clients with California real estate sales, property management, real estate legal matters, and real estate tax issues.
If you’re selling a property, seeking REALTOR® services, buying a home, or looking for property management services, contact our office for a complimentary initial discussion.
For matters requiring real estate legal advice, private family sales, family transfers, or tax-related analysis, please schedule a paid consultation:
Sources & Additional Reading
California Civil Code § 1950.5 — Residential Security Deposits
Section 1950.5(h)(1)(C) contains the specific rules governing return of a security deposit when multiple adult tenants reside in the rental unit.
California Assembly Bill 414 (2025)
AB 414 amended Civil Code § 1950.5 and added the current rules concerning methods for returning security deposits, including provisions addressing multiple adult tenants. The amendments became effective January 1, 2026.
California Courts — Guide to Security Deposits in California
California Courts explains the general 21-day deadline for returning a security deposit and providing the required itemized accounting after a tenant moves out.
California Association of REALTORS® — 2026 New Laws
C.A.R.’s discussion of AB 414 explains that, with multiple tenants, the default is a check payable to all tenants unless the landlord and all adult tenants agree otherwise in writing.
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