The security deposit is the single most common source of friction between California tenants and landlords. A tenant moves out expecting a check; the landlord deducts for cleaning and repairs; and a dispute follows. California law — recently reshaped by a major 2024 change — sets firm rules on how large a deposit can be, what a landlord may deduct, how quickly the money must come back, and what happens when a landlord wrongfully keeps it. This guide explains those rules, including the AB 12 cap that took effect July 1, 2024, the 21-day return deadline, the optional move-out walk-through, and the penalties for bad-faith retention.

This is general legal information, not legal advice. Deposit rules turn on specific facts — the size of the property, the condition at move-in, and the timing of notices. Before withholding a deposit, disputing a deduction, or suing over one, consult an attorney licensed by the State Bar of California.

The governing statute: Civil Code § 1950.5

California security deposits are governed by Civil Code § 1950.5. The statute defines what counts as a security deposit (essentially any payment beyond the first month’s rent that secures the tenant’s performance), limits how much may be collected, restricts what it can be used for, and imposes deadlines and penalties. A key principle running through the statute: a security deposit always remains the tenant’s money. The landlord holds it, may apply it only for specific authorized purposes, and must account for it after move-out. Lease language purporting to make a deposit “non-refundable” is unenforceable.

The AB 12 cap: one month’s rent, effective July 1, 2024

The biggest recent change is AB 12, which amended § 1950.5 effective July 1, 2024. Under the new rule, most landlords may collect a security deposit of no more than one month’s rent, regardless of whether the unit is furnished or unfurnished. This was a significant tightening: the prior law allowed up to two months’ rent for an unfurnished unit and up to three months’ for a furnished one.

There is a narrow small-landlord exception. A landlord may collect up to two months’ rent if both of the following are true:

  • The landlord is a natural person, or an LLC in which all members are natural persons; and
  • The landlord owns no more than two residential rental properties that collectively include no more than four dwelling units offered for rent.

If a landlord does not meet both conditions — for example, a corporate owner, or an individual who owns three rental houses — the one-month cap applies. The cap is on the deposit only; the landlord can still collect the first month’s rent on top of it.

What a landlord may deduct

A landlord may use the deposit only for the limited purposes § 1950.5 allows:

  • Unpaid rent.
  • Cleaning to return the unit to the same level of cleanliness it had at the start of the tenancy — not to make it cleaner than the tenant received it.
  • Repair of damage caused by the tenant or the tenant’s guests, beyond ordinary wear and tear.
  • Restoration of personal property or furnishings, where the lease so provides, other than for ordinary wear and tear.

The crucial limit is ordinary wear and tear. A landlord may not charge the tenant for the normal aging of the unit — faded paint, minor carpet wear, small nail holes from hanging pictures. Those are the landlord’s cost of doing business. Deductions are proper only for damage that goes beyond what normal use produces, such as large holes, pet stains, or broken fixtures.

The 21-day itemized return rule

After the tenant moves out, the landlord has 21 calendar days to either return the entire deposit or send the tenant an itemized statement listing each deduction, along with any remaining balance. If the landlord deducts for repairs or cleaning and the deductions total more than $125, the landlord must also include copies of receipts or invoices for the labor and materials — or, where work was done by the landlord’s own staff, a description of the work and the reasonable cost. The 21-day clock runs from when the tenant gives up possession, and the statement and any refund are typically mailed to the tenant’s last known address or forwarding address.

The pre-move-out walk-through inspection

Section 1950.5 gives departing tenants a valuable, often-overlooked right: the initial inspection, sometimes called the pre-move-out walk-through. After either party gives notice ending the tenancy, the tenant may request an inspection that the landlord must perform during the final two weeks of the tenancy (it is not available to tenants being evicted). At that inspection, the landlord identifies the cleaning and repairs that — if left undone — would be deducted from the deposit, and provides an itemized statement of those items. The point is to give the tenant a chance to fix the problems before move-out and avoid the deductions entirely. The landlord must give reasonable written notice of the inspection date and time, and the tenant has the right to be present.

Penalties for bad-faith retention

If a landlord wrongfully keeps a deposit, the tenant can sue — often in small claims court — to recover it. The penalty for bad-faith retention is significant: in addition to the amount actually owed, a court may award the tenant up to twice the amount of the security deposit as a statutory penalty where the landlord retained the deposit in bad faith. “Bad faith” means more than an honest mistake — it suggests the landlord knew the retention was improper or acted with reckless disregard. The threat of this penalty is a strong incentive for landlords to provide a complete, accurate, and timely itemized statement.

What counts as a security deposit

Section 1950.5 sweeps broadly: a “security deposit” is essentially any payment a landlord collects, beyond the first month’s rent, to secure the tenant’s performance — whether it is labeled a security deposit, a cleaning fee, a pet deposit, a key deposit, or a last-month’s-rent deposit. Because the statute looks at function rather than label, a landlord cannot evade the one-month cap by splitting the same money across several differently named “fees.” All of it counts toward the deposit total, all of it must be accounted for within 21 days, and none of it can be made truly “non-refundable.” A genuine application screening fee charged before the tenancy begins is treated differently and is separately capped by statute, but once the tenancy starts, money held against the tenant’s obligations is a deposit.

Interest, account requirements, and the transfer of ownership

California does not impose a statewide requirement that landlords pay interest on security deposits, though some local ordinances do require interest and set how it accrues — another reason to check your city’s rules. When a rental property is sold, the deposit obligation follows the property: the law requires the deposit to be transferred to the new owner or returned to the tenant, and the new owner generally becomes responsible for accounting for it. A tenant whose building changes hands should keep records of the original deposit amount, because that figure is what the new owner must eventually account for. If a deposit is lost in the shuffle of a sale, the tenant still has a claim — typically against the new owner, who took the property subject to the deposit.

Using small claims court

Most deposit disputes are modest in dollar terms, which makes small claims court a practical venue. Small claims is designed to be used without a lawyer, has a relatively low filing cost, and handles claims up to the statutory limit for individuals. A tenant suing over a wrongfully withheld deposit would bring move-in and move-out photos, the lease, the itemized statement (or proof none arrived), and evidence of the 21-day deadline being missed. If the court finds bad-faith retention, it can award up to twice the deposit as a penalty on top of the amount actually owed. Before filing, a clear written demand letter citing § 1950.5 sometimes resolves the dispute, because landlords aware of the doubling penalty often prefer to settle.

Step-by-step: getting your deposit back

  1. Document the move-in condition. Photos and a written move-in checklist are the tenant’s best evidence of what was normal at the start.
  2. Give proper notice and request the walk-through. When ending the tenancy, ask in writing for the pre-move-out inspection so you can cure deductible items.
  3. Cure what you can. Clean to the move-in standard and repair tenant-caused damage before you hand back the keys.
  4. Document the move-out condition. Take dated photos of every room after you clean and before you leave.
  5. Provide a forwarding address so the landlord can mail the statement and refund within 21 days.
  6. Review the itemized statement. Within 21 days you should receive your deposit or an itemization; for deductions over $125, receipts must be included.
  7. Dispute improper deductions in writing, citing § 1950.5 and the ordinary-wear-and-tear limit.
  8. Sue if necessary. If the landlord ignores the deadline or keeps the deposit in bad faith, you can file in small claims court for the deposit plus up to twice the deposit as a penalty.

Common deduction disputes and how courts view them

Certain deductions come up again and again, and California law gives fairly predictable answers. Carpet replacement is a frequent flashpoint: carpet has a finite useful life, and a landlord generally cannot charge a departing tenant the full cost of new carpet when the old carpet was already partway through its lifespan — courts apportion the cost based on the carpet’s age and expected life, and pure wear is not chargeable at all. Repainting is similar; routine repainting between tenants is ordinarily a cost of doing business, not a deductible item, unless the tenant caused damage beyond normal use. Cleaning charges are proper only to return the unit to its move-in level of cleanliness, which is why a documented move-in condition is so valuable. Nail holes from hanging pictures are typically ordinary wear and tear, while large holes or anchor damage may be chargeable. Understanding where the line falls helps both sides avoid disputes — and helps a tenant recognize an improper deduction when one appears on the itemized statement.

When a tenant challenges deductions, the burden in practice falls heavily on the landlord to justify them with the itemized statement and, for amounts over $125, supporting receipts. A landlord who cannot document a deduction, or who deducts for ordinary wear and tear, risks not only losing the deduction but also exposure to the bad-faith penalty if the retention crosses from honest error into knowing overreach. This is why careful landlords photograph the unit at move-in and move-out, keep contractor invoices, and send a complete itemization well within the 21-day window.

Frequently asked questions

How much can my landlord charge me for a security deposit?

Since July 1, 2024, most landlords are limited to one month’s rent (Civ. Code § 1950.5, as amended by AB 12). A qualifying small landlord — a natural person or person-owned LLC who owns no more than two rental properties totaling no more than four units — may charge up to two months’ rent. These limits apply to the deposit and are separate from the first month’s rent.

Can my landlord deduct for normal wear and tear?

No. The deposit may be used only for unpaid rent, cleaning to the move-in standard, and repair of damage beyond ordinary wear and tear. Faded paint, minor carpet wear, and small nail holes are ordinary wear and tear and are the landlord’s responsibility, not yours.

How long does my landlord have to return my deposit?

21 calendar days after you move out. Within that time, the landlord must mail your full deposit or an itemized statement of deductions with any remaining balance. For deductions over $125, the landlord must include receipts or invoices.

My landlord kept my whole deposit and never sent an itemization. What can I do?

You can demand the deposit in writing and, if the landlord refuses, sue — often in small claims court. If the landlord acted in bad faith, you may recover up to twice the amount of the deposit as a statutory penalty under Civil Code § 1950.5, on top of the deposit itself.

What is the pre-move-out inspection and should I ask for one?

It is an inspection during your last two weeks of tenancy at which the landlord tells you, in writing, what would be deducted, so you can fix those items first. Yes, you should request it — it is one of the best ways to avoid deposit disputes. It is not available if you are being evicted.

How the AB 12 cap applies to existing tenancies

The AB 12 one-month cap took effect on July 1, 2024, and it raised practical questions for tenancies that began before that date with larger deposits. The new cap limits what a landlord may collect as a deposit; it does not, by itself, force a landlord to refund the extra portion of a deposit that was lawfully collected under the prior two-or-three-month rule before the change. In other words, a tenant who paid a two-month deposit in 2023 under the old law is not automatically owed half of it back simply because the cap changed. What the new cap does control is fresh collection: when a new tenancy begins, or when a landlord seeks to collect or top up a deposit after the effective date, the one-month limit (or two months for a qualifying small landlord) applies. Tenants unsure whether their deposit was lawfully collected should look at when it was paid and under which version of the law, and landlords should make sure any deposit they collect today fits within the current cap.

Deposits, roommates, and changes in tenancy

When roommates share a unit, the deposit is usually a single sum tied to the tenancy rather than divided neatly among the occupants, which can complicate things when one roommate leaves. The landlord’s 21-day accounting obligation generally runs from when the tenancy as a whole ends and possession is surrendered, not from when an individual roommate departs mid-lease — so a roommate who moves out early often must work out their share of the deposit privately with the remaining tenants rather than demanding a refund from the landlord. Similarly, when a tenancy continues but ownership of the building changes, the deposit follows the property to the new owner. Keeping clear written records — who paid what, when, and under which lease — is the best protection against confusion when the deposit is finally accounted for at the true end of the tenancy.

Practical tips for both sides

The recurring lesson of California deposit law is that disputes are almost always evidentiary, so the side with the better records usually prevails. For tenants: complete a written move-in checklist and take dated photos of every room before you move a single box in; request the pre-move-out inspection in writing; clean the unit to its move-in condition and photograph it again at move-out; and provide a forwarding address so the 21-day statement can reach you. For landlords: collect no more than the cap allows; document the unit’s condition at move-in and move-out with photos; keep contractor invoices and receipts for any deduction over $125; send a complete, itemized statement well within 21 days; and never deduct for ordinary wear and tear or treat any portion of the deposit as non-refundable. Following these simple practices prevents the great majority of deposit disputes from ever reaching a courtroom — and when one does, it is the documented party who walks out ahead.

Talk to a California landlord-tenant attorney

Deposit disputes are common, the dollar amounts can be substantial, and the law gives tenants real leverage through the 21-day rule and the bad-faith penalty. A California attorney can review your itemized statement, calculate what you are owed, and help you recover it — or, if you are a landlord, make sure your deductions and timing comply. Start with the landlord-tenant hero guide, and if your dispute also involves repairs and conditions, read our guide to habitability and repairs. Our directory connects you with attorneys licensed by the State Bar of California across all 58 counties, free and with no obligation.