Security Deposit Laws in California: What Every Landlord Must Know in 2026

Published March 14, 2026

AB 12 changed everything: California security deposits are now capped at 1 month's rent regardless of furnishing. Here's what landlords must know.

Security deposits are one of the most litigated issues in California landlord tenant law, and in my experience, most of those lawsuits are entirely preventable. The rules are straightforward if you follow them. The problem is that most owners either do not know the current rules or are still operating under the old ones.

Here is what you need to know as of 2026.

AB 12: The New Deposit Cap

Assembly Bill 12 went into effect on July 1, 2024, and it rewrote the deposit rules in California. Previously, landlords could collect up to two months rent for an unfurnished unit and three months rent for a furnished unit. That is gone.

Under AB 12, the maximum security deposit is one month of rent, regardless of whether the unit is furnished or unfurnished. If your unit rents for $2,800 per month, your deposit cap is $2,800.

There is one exception. Small landlords who own no more than two residential properties with a combined total of four or fewer units can still collect up to two months of rent. But the moment you acquire a third property or your total unit count exceeds four, you fall under the one month cap.

This matters because many owners who previously collected $5,000 or $6,000 deposits on higher end furnished units now have significantly less financial cushion against damage or unpaid rent.

The 21 Day Rule

When a tenant moves out, you have 21 calendar days to either return the full deposit or provide an itemized statement explaining every deduction, along with receipts or good faith estimates for repairs. If repairs are not yet complete, you can use estimates, but you must send actual receipts within 14 days after the work is finished.

Calendar days means calendar days. Not business days. If the tenant moves out on a Friday, day 21 falls on a Thursday three weeks later regardless of holidays or weekends. I mark every move out date in our system and set a reminder at day 14 to make sure we are never scrambling at the deadline.

Missing this deadline is one of the fastest ways to lose in small claims court, even if your deductions were legitimate.

What You Can and Cannot Deduct

You can deduct for damage beyond normal wear and tear, cleaning costs to restore the unit to the condition it was in at move in (not "brand new" condition, just the condition documented at move in), and unpaid rent including any rent owed through the end of the notice period.

You cannot deduct for normal wear and tear. This is where most disputes happen, so let me give you some concrete examples.

Nail holes from hanging pictures: normal wear and tear. A fist sized hole in the drywall: damage. Faded or slightly worn paint after a tenant has lived there for three years: normal wear and tear. Crayon drawings covering an entire wall after a six month tenancy: damage. Carpet that is matted and slightly worn after five years: normal wear and tear. Carpet with bleach stains and pet urine: damage.

The general principle is that things deteriorate with use over time and that is expected. Damage is something that happened because of abuse, neglect, or misuse that goes beyond what you would expect from someone simply living in the unit.

Small Claims Risk: The 2x Penalty

If a court finds that a landlord retained a security deposit in bad faith, the tenant can be awarded up to twice the amount of the deposit in addition to the actual deposit amount. On a $2,800 deposit, that means your exposure is $8,400 if the judge decides you acted in bad faith.

Bad faith does not require malicious intent. Sloppy record keeping, failing to provide an itemized statement, or deducting for things that clearly constitute normal wear and tear can all be interpreted as bad faith.

Tenants know this. Attorneys who represent tenants know this. And small claims judges in Los Angeles County see deposit disputes every single day, so they are very good at spotting landlords who are winging it.

Common Mistakes That Cost Owners Money

No move in inspection. If you did not photograph and document the unit condition at move in, you have no baseline to prove what constitutes damage versus pre existing conditions. We do a detailed photo and video walkthrough for every unit before a tenant takes possession, and we have the tenant sign a condition report.

Co mingling deposits. Security deposits should be tracked separately, not dumped into your general operating account. While California does not require a separate bank account the way some states do, you need clear accounting records showing that the deposit funds exist and are attributable to each tenant.

Missing the 21 day deadline. Even one day late can shift the entire case in the tenant's favor.

Charging for "professional cleaning" on every move out. Unless the tenant left the unit materially dirtier than it was at move in, you cannot automatically deduct $300 to $500 for a cleaning crew. If the unit needs a normal turnover clean, that is a cost of doing business.

A Lesson from Early in My Career

About six years into managing properties, I handled a deposit return for an owner who insisted on deducting $1,200 for paint and $400 for cleaning on a unit where the tenant had lived for four years. I pushed back and told the owner the paint deduction would not hold up because four years of normal living absolutely fades and scuffs paint. The owner overruled me and sent the statement.

The tenant filed in small claims. The judge awarded the tenant the full deposit plus a bad faith penalty. Total cost to the owner: over $6,000 on deductions that should have been about $150 for a minor drywall repair. That was the last time I let an owner override our deposit protocol.

Protecting Yourself

The playbook is simple. Document everything at move in with photos, video, and a signed condition report. Track your deposits carefully. Process move outs within 14 days so you have a buffer before the 21 day deadline. Only deduct for legitimate damage with receipts. And when in doubt, return more of the deposit rather than less, because the cost of losing in small claims always exceeds the deduction you were trying to keep.

At Schofield Properties, deposit handling is one of the things our owners appreciate most. We manage the entire process from move in documentation through final accounting, and our dispute rate on deposits is extremely low because we follow the law to the letter. If you are not sure your deposit process would survive a small claims judge, ask us to look at it. You can find us at schofieldproperties.com.

Topics: security deposits, AB 12, california law, landlord guide, tenant law

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