Security Deposits

Can a landlord increase the deposit after move-in?

California rental guidance and tenant-landlord operational information.
Published February 25, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 97 days ago · California

Can a Landlord Increase the Security Deposit After Move-In in California?

If you are renting a property in California, understanding your rights regarding security deposits is essential. One common question tenants often ask is whether a landlord can increase the security deposit after the lease has begun. This guide provides a clear explanation based on California law to help tenants navigate this issue confidently.

Overview of Security Deposit Rules in California

In California, security deposits serve as financial protection for landlords to cover unpaid rent, damages beyond normal wear and tear, cleaning costs, and other breaches of the rental agreement. The rules governing security deposits are designed to protect tenants from unfair or unexpected charges.

Initial Security Deposit Limits

  • Maximum Deposit Amount: For unfurnished residential properties, the landlord can charge a security deposit equivalent to two months’ rent. For furnished properties, this increases to three months’ rent.
  • The security deposit is typically paid at the start of tenancy before moving in, and the amount is fixed unless otherwise agreed upon.

Can a Landlord Increase the Deposit After Move-In?

General Rule: No Increase During Term Unless Renegotiated

Under California law, a landlord cannot unilaterally increase the security deposit during the lease term without the tenant’s consent. The deposit amount is established at the beginning of the tenancy and remains in effect for the duration of that lease agreement.

  • If the lease is a fixed-term lease (e.g., one year), the landlord cannot raise the security deposit until the lease term ends.
  • For month-to-month tenancy agreements, the landlord may request an increase in the deposit, but must provide proper notice.

Requirements for Increasing Deposit in Month-to-Month Tenancies

In month-to-month rental agreements, the landlord may increase the security deposit by following these steps:

  • Provide the tenant with a written notice of the increase.
  • The notice must be given at least 30 days before the increase takes effect if the increase is 10% or less of the current rent.
  • For increases greater than 10%, a 60-day notice is typically required.
  • The notice should specify the new deposit amount and the date by which it must be paid.

Tenant Consent is Required

Regardless of how the tenancy is structured, any increase in the security deposit amount after move-in generally requires the tenant’s agreement. Tenants are not obligated to agree to a higher deposit unless the lease or rental agreement allows for it explicitly.

  • If the tenant refuses to pay the increased deposit, the landlord may pursue eviction or termination of tenancy under proper procedures but cannot force payment outside of these measures.
  • Tenants should never pay an increased deposit without a clear written agreement or updated lease amendment.

Exceptions and Special Circumstances

  • Lease Renewals: When a lease is renewed or extended, landlords often use this opportunity to request a higher security deposit. At this time, both parties can negotiate the terms, including the deposit amount.
  • Additional Tenants: If the tenant adds roommates or occupants to the rental unit during tenancy, the landlord might request an increased deposit to reflect the higher risk, but only with tenant consent.
  • Damage or Repairs: A landlord cannot increase the deposit to cover damages that arise during tenancy; those amounts are deducted from the original deposit after move-out.

Tenant Protections Regarding Security Deposits

California landlords must also comply with other important rules related to security deposits:

  • Prompt Return: Landlords must return the security deposit or an itemized statement of deductions within 21 days after the tenant moves out.
  • Written Receipts: If paying in cash, tenants should request a receipt. Security deposits must be tracked carefully by landlords.
  • No Interest Requirements: Unlike some states, California does not require landlords to pay interest on security deposits.
  • Limits on Use: Security deposits cannot be used to cover normal wear and tear; only actual damages or unpaid rent can be deducted.

Practical Tips for California Tenants

  • Review Your Lease: Always check your lease for clauses about security deposits, including whether the landlord reserves the right to increase the deposit.
  • Get Changes in Writing: If a landlord requests a deposit increase, ask for a written notice or amended lease specifying the new terms.
  • Know Your Notice Rights: For month-to-month leases, confirm your landlord has provided the proper notice before paying a higher deposit.
  • Document the Unit's Condition: To avoid disputes, take photos or videos when you move in and keep copies for your records.
  • Communicate Clearly: If you are unable or unwilling to pay an increased deposit, notify your landlord promptly in writing to clarify your position.

Summary

In California, landlords generally cannot increase the security deposit after move-in unless:

  • You are on a month-to-month lease and receive proper advance written notice, or
  • You agree to an increase during lease renewal or via amendment.
Understanding these rules can empower tenants to challenge inappropriate deposit increases and ensure their rights are upheld during their tenancy.

If you encounter any issues with your security deposit or suspect an illegal increase, consider seeking advice from legal aid organizations or tenant advocacy groups familiar with California rental laws.

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