California Security Deposit Increase After Rent Goes Up: Can a Landlord Ask for More in 2026?

The short answer

A rent increase does not automatically create a separate right to collect more security in California. A landlord should first determine whether the rental agreement and type of tenancy permit a change to the deposit, whether any required notice to change tenancy terms has been given, and whether the total security being demanded complies with California Civil Code section 1950.5.

For most residential rentals, security demanded or received on or after July 1, 2024 is generally capped at one month's rent. A narrow small-landlord exception can permit up to two months' rent when the statutory ownership requirements are met. A demand made in 2026 should therefore be reviewed under the current statute rather than an older rule that allowed larger deposits more broadly.

California's current security-deposit cap is generally one month's rent

Civil Code section 1950.5(c)(1) says that, except for specified exceptions, a landlord may not demand or receive residential security above an amount equal to one month's rent, in addition to first month's rent paid on or before initial occupancy.

Section 1950.5(c)(5) contains a limited exception allowing up to two months' rent when the landlord is a natural person, or an LLC whose members are all natural persons, and owns no more than two residential rental properties that collectively contain no more than four units offered for rent. That exception does not apply to a prospective tenant who is a service member. Because the exception depends on the landlord's ownership structure and portfolio, a tenant should not assume it applies simply because the property looks small.

The July 1, 2024 change did not automatically rewrite older deposits

Section 1950.5(c)(6) states that the current subdivision does not apply to security that was collected or demanded before July 1, 2024. That means the 2024 change should not be treated as an automatic retroactive refund rule for every larger deposit that was lawfully collected earlier.

If a landlord already holds an older deposit and makes a new demand in 2026, separate the two questions: what amount was lawfully collected before July 1, 2024, and what additional security is now being demanded after the new cap took effect. Keep the original lease, deposit receipt, renewal documents and the date of every later demand so the timeline is clear.

A periodic tenancy can involve a change-of-terms notice

Civil Code section 827(a) provides a written-notice mechanism for changing terms of week-to-week, month-to-month and other periodic tenancies shorter than a month. For a month-to-month tenancy, the statute generally provides at least 30 days before a change in lease terms takes effect, subject to longer periods required by another statute, regulation, recorded regulatory agreement or contract.

A security-deposit increase should not be analyzed as though it were automatically part of the rent increase itself. The landlord should identify the legal and contractual basis for changing the deposit, provide any required change-of-terms notice, and remain within the current security limits. Local rent-control or tenant-protection rules can add restrictions, so the city and county should also be checked.

For a fixed-term lease, start with the lease instead of assuming the deposit can change

Section 827's general change-of-terms procedure is written for periodic tenancies. When a tenant is still inside a fixed-term lease, the lease language matters because the landlord does not get the same open-ended periodic change mechanism simply because the monthly rent or operating costs have changed.

Review the security-deposit clause, any rent-adjustment clause, amendments and renewal documents before paying an additional amount. If the lease does not authorize the proposed change, ask the landlord or property manager to identify the agreement provision and legal basis they believe permits the additional deposit during the current term.

A change in property management does not erase the existing deposit

California Civil Code section 1950.5 also addresses what happens when the landlord's interest in the property is transferred. The outgoing landlord can transfer the remaining security to the successor and notify the tenant, or return the security with the required accounting. The successor then takes on the statutory rights and obligations associated with the security it receives.

Importantly, section 1950.5(k) says a successor generally may not require a tenant to post replacement security merely because the prior landlord failed to transfer the deposit, unless the successor first makes the restitution or accounting required by the statute. A tenant whose management company changes should therefore ask for a written ledger showing the deposit already being held before treating a new charge as though no prior deposit exists.

A rent increase and a deposit increase are related numbers, but different legal steps

When rent rises, a landlord may want the security amount to track the new monthly rent. California law does not make that adjustment automatic. The rent increase itself must comply with the applicable rent-control and notice rules, while any additional-security demand must separately comply with the lease or tenancy terms, Civil Code section 1950.5 and any applicable change-of-terms requirements.

That distinction is especially important in rent-controlled jurisdictions or when the property may be subject to the Tenant Protection Act. A lawful rent increase does not by itself prove that a deposit increase was lawfully imposed, and a deposit dispute does not by itself determine whether the rent increase was valid.

What to ask for before paying an additional deposit

Ask management to provide the amount of security currently being held, the date it was originally collected, the new amount requested, the lease provision or notice authorizing the change, and whether management is relying on the one-month rule or the limited two-month small-landlord exception. If ownership or management changed, also ask how the prior deposit was transferred or accounted for.

Keep the lease and every renewal, the original deposit receipt, rent-increase notice, any separate security-deposit notice, payment ledger, emails or portal screenshots, and proof of the date the new demand was made. Those records make it easier to separate a valid rent change from a potentially unsupported deposit charge.

Use Max Rental Tools to keep the lease and deposit record organized

Max Rental Tools includes a Residential Lease Agreement, Lease Amendment, Security Deposit Itemization, Security Deposit Refund Statement and Rent Increase Notice. These tools can help document the transaction, but California Civil Code sections 1950.5 and 827, plus any applicable local ordinance, remain the controlling legal sources.