AB 12 — The New 1-Month Security Deposit Cap
For decades, California law allowed landlords to collect security deposits of up to two months' rent for unfurnished units and three months' rent for furnished units. That framework changed permanently on July 1, 2024, when AB 12 took effect. The new law dramatically cuts the maximum allowable deposit for most landlords down to just one month's rent — regardless of whether the unit is furnished or unfurnished.
The policy rationale behind AB 12 was that large upfront deposit requirements were pricing low- and moderate-income renters out of the market. A household that earns $5,000 per month might qualify for a $2,000/month apartment by income, but scrambling to produce $6,000 upfront (first month + two-month deposit) was a practical barrier. The new law attempts to lower that entry cost for tenants, while shifting the financial risk more toward landlords.
Before and After AB 12: The Numbers
| Scenario | Before July 1, 2024 | After July 1, 2024 |
|---|---|---|
| Unfurnished unit, standard landlord | Up to 2 months' rent | Up to 1 month's rent |
| Furnished unit, standard landlord | Up to 3 months' rent | Up to 1 month's rent |
| Unfurnished, small-landlord exception | Up to 2 months' rent | Up to 2 months' rent (unchanged) |
| Furnished, small-landlord exception | Up to 3 months' rent | Up to 2 months' rent (reduced) |
| Separate "pet deposit" | Counted toward cap | Still counted toward cap; cannot be separated |
The Small Landlord Exception — Who Qualifies?
AB 12 created a narrow exception for small individual landlords. If you qualify, you may still collect up to two months' rent as a security deposit. However, the exception is tightly defined and comes with conditions that many landlords will not meet, especially those who own property through LLCs or other business entities.
Small Landlord Criteria — ALL of the Following Must Be True:
- Individual ownership: The landlord must be a natural person — a human being, not a corporation, LLC, partnership, trust, or other legal entity. This is the most common disqualifying factor: if you own your rental through an LLC for liability protection, you are not a small landlord under AB 12.
- No more than two residential properties: The individual may own no more than two residential rental properties in total, anywhere in California.
- No more than four units total: Across all properties owned, the individual may have no more than four total dwelling units. Example: One duplex and one single-family home = 3 units = qualifies. Two triplexes = 6 units = does not qualify.
- Not a court-supervised trustee: The exception does not apply to property held in a trust with a court-appointed trustee administering the estate.
Documenting Your Small-Landlord Status
If you claim the small-landlord exception and a tenant disputes it, you may need to demonstrate your eligibility. Best practice is to include a statement in the lease confirming that: (1) the landlord is a natural person; (2) they own no more than two residential properties; and (3) those properties contain no more than four total dwelling units. Keep documentation of your property holdings in case a tenant or their attorney challenges your claimed exception.
What You Can and Cannot Deduct from a Security Deposit
California Civil Code §1950.5 lists the four categories of allowable deductions from a security deposit. Anything outside these four categories is an improper deduction — and attempting to keep money you are not entitled to can trigger bad-faith penalties up to twice the full deposit amount.
The Four Allowable Deduction Categories
- Unpaid rent: Any rent owed by the tenant at the time they vacate, including any month in which they vacated mid-month
- Cleaning: Reasonable costs to clean the unit to the condition it was in when the tenant moved in — but only if the tenant left it dirtier than that baseline. You cannot charge for cleaning a unit that was already clean when the tenant left.
- Damage beyond normal wear and tear: Repair costs for damage caused by the tenant, their guests, or pets — but not for deterioration from normal use
- Restoration of furnishings or personal property: Costs to repair or replace landlord-owned furnishings, appliances, or fixtures damaged beyond normal wear and tear
- Re-painting walls to freshen the color after normal use
- Replacing carpet worn down by normal foot traffic over the useful life
- Routine cleaning fees charged regardless of actual cleanliness
- Administrative fees or "processing fees" of any kind
- Pre-existing damage that was present at move-in
- Costs for upgrades or improvements that benefit future tenants
Normal Wear and Tear vs. Damage — Examples
| Situation | Normal Wear & Tear? | Deductible? |
|---|---|---|
| Small nail holes from hanging pictures | Yes | No |
| Large holes in drywall | No — damage | Yes |
| Carpet worn down evenly over 5+ years | Yes | No |
| Large stain or burn mark on carpet | No — damage | Yes (prorated) |
| Paint scuffs and minor marks on walls | Yes | No |
| Crayon drawings on walls by child | No — damage | Yes |
| Light switch plates slightly discolored | Yes | No |
| Broken window (not from weather) | No — damage | Yes |
| Dust behind appliances | Yes | No |
| Grease buildup in oven left by tenant | No — cleaning | Yes |
| Faded paint from sunlight | Yes | No |
| Pet damage to flooring or baseboards | No — damage | Yes |
The Proration Rule for Aging Items
When you deduct for damage to items that have a finite useful life — such as carpet, appliances, or window blinds — courts expect you to prorate the deduction based on the remaining useful life at the time of the damage. For example, if carpet has a 10-year useful life and was already 7 years old when damaged, you may only deduct 30% of the replacement cost (the remaining useful life), not the full replacement cost.
The 21-Day Return Rule — Requirements and Process
California's 21-day deadline is one of the strictest in the country and is rigorously enforced. Missing it — even by one day — can expose you to liability for the full deposit plus bad-faith penalties. Here is the complete process you must follow.
Day 0 — Tenant Vacates
The 21-day clock starts the day the tenant actually leaves and returns all keys, not the last day of the lease. If the tenant holds over by a few days, the clock starts on the actual move-out date. Document this date in writing — a simple email or text confirming the tenant has returned keys is sufficient.
Days 1–3 — Conduct Move-Out Inspection
Complete a thorough walk-through as soon as possible. Use a standardized move-in/move-out inspection form and take dated photographs of every room, every wall, every appliance, and any areas of damage. Compare directly to move-in photos. Retain both sets indefinitely.
Days 4–14 — Obtain Bids and Receipts
Contact vendors for any repairs or cleaning needed. Get written estimates or invoices. California courts expect itemized documentation for each deduction — ballpark figures or internal management fees are not sufficient for contested deductions.
Day 21 — Deadline to Return Deposit and Statement
By this date you must mail or personally deliver: (1) any remaining balance of the deposit, and (2) an itemized written statement of all deductions. If work is still in progress, you may use a good-faith estimate and provide a final accounting within 14 days of completion — but you must still send the initial statement and any undisputed refund by day 21.
What the Itemized Statement Must Include
- Each item of damage or cleaning separately listed with a description
- The exact dollar amount deducted for each item
- For cleaning: receipts or invoices from the cleaner, or an hourly breakdown if done by you or your staff
- For repairs: copies of receipts or paid invoices from contractors
- For materials purchased by the landlord: receipts for all materials
- The opening balance (the deposit received), each deduction, and the final balance returned
Pet Deposits — How They Count Toward the Cap
One of the most misunderstood areas of California security deposit law is the treatment of pet deposits. Many landlords believe a "pet deposit" is a separate financial instrument they can collect in addition to the standard security deposit. California law has never allowed this, and AB 12 did not change this fundamental rule.
Under California Civil Code §1950.5(b), the total of all deposits collected from a single tenancy — regardless of what they are called — counts toward the security deposit cap. A landlord may not collect a one-month security deposit plus a separate "pet deposit" of $500 and claim to be under the cap. The $500 pet deposit counts toward the cap, and if the combined total exceeds one month's rent (or two months for eligible small landlords), the landlord has violated the law.
Accommodation Animals — Service Animals and ESAs
You may not charge any additional deposit or fee — pet or otherwise — for a tenant's service animal or emotional support animal (ESA). These are accommodation animals under federal fair housing law and California's FEHA. Charging a pet deposit for a verified service animal or ESA is a fair housing violation and can result in significant penalties. You may still hold the tenant responsible for actual damage caused by the animal, using the security deposit, but you cannot charge extra upfront for having the animal.
Last Month's Rent vs. Security Deposit
Some landlords — particularly those who collect "first and last month's rent plus deposit" — are confused about whether the last month's rent counts toward the security deposit cap. The answer matters significantly under AB 12.
California law treats "last month's rent" paid in advance as part of the security deposit for purposes of the cap. Civil Code §1950.5 explicitly defines "security deposit" to include any payment that is intended as security for the performance of the tenant's obligations, including rent. If a landlord collects first month's rent, last month's rent in advance, and a security deposit, the last month's rent and the security deposit together are treated as the total deposit and must not exceed the applicable cap.
Distinguishing First Month's Rent
The first month's rent collected at move-in is not part of the security deposit — it is simply rent for the first month of occupancy. Only amounts collected beyond the current month's rent count toward the security deposit cap. So: first month's rent (not a deposit) + security deposit of up to 1 month's rent = total upfront cash of 2 months. Last month's rent in advance + security deposit = 2 months extra beyond first month = likely violates the cap for non-small-landlords.
Security Deposit Accounting Best Practices
Proper accounting of security deposits is both a legal obligation and a practical protection. California does not require security deposits to be held in a separate escrow account (unlike some states), but strong internal accounting practices are essential for compliance and for winning disputes.
Record-Keeping System
- Unit-level ledger: Maintain a separate deposit ledger for each rental unit, showing the deposit received (date, amount, check number or payment method), any lawful deductions, interest earned if applicable, and the return date and amount
- Move-in documentation: A signed move-in inspection report, dated photographs or video walkthrough, and a written inventory of all furnishings if furnished
- Move-out documentation: Matching move-out inspection report with photos, signed if the tenant was present, along with all contractor invoices and cleaning receipts
- Payment receipts: Keep copies of the deposit check or payment confirmation; if paid in cash, provide a signed written receipt immediately
Move-In Pre-Inspection — Tenant's Right
California Civil Code §1950.5(f) gives tenants the right to request a pre-move-out inspection — a walk-through conducted by the landlord within two weeks before the tenant vacates. During this inspection, the landlord must provide the tenant with a written statement identifying any items that will result in deductions if not corrected before move-out. This gives the tenant an opportunity to fix issues themselves. If a landlord fails to offer a pre-move-out inspection when the tenant requests one, the landlord's ability to make certain deductions may be limited.
Penalties for Non-Compliance
California has one of the most tenant-friendly security deposit penalty frameworks in the country. Landlords who violate AB 12's cap rules, miss the 21-day return deadline, or make improper deductions face both civil liability and, in egregious cases, punitive sanctions.
Wrongful Withholding — Basic Remedy
If a landlord fails to return a security deposit within 21 days without a lawful basis, the tenant may sue in small claims court (for amounts up to $12,500) or Superior Court without a mandatory attorney. The tenant can recover the amount wrongfully withheld plus costs of suit.
Bad-Faith Penalty — Up to 2× the Deposit
California Civil Code §1950.5(l) provides that if a court finds the landlord acted in bad faith in withholding the deposit or making deductions, the court shall award the tenant a civil penalty of up to twice the amount of the security deposit in addition to actual damages. This penalty is mandatory once bad faith is found — the court has no discretion to reduce it.
Collecting More Than the Cap
Collecting a deposit in excess of the AB 12 cap is itself a violation of Civil Code §1950.5. Tenants can sue for return of any amount collected above the cap, plus attorney's fees if the court determines the landlord's conduct was oppressive or malicious. Local housing authorities may also investigate and penalize repeated violations.
How NextGen Coastal Manages Security Deposits for Clients
Security deposit compliance is one of the highest-frequency liability areas in property management. NGC's internal systems are designed to eliminate the most common deposit-related mistakes before they become disputes.
- AB 12 deposit cap enforcement: Our lease generation system automatically sets the maximum allowable deposit for each new tenancy based on ownership structure and property type — landlords using NGC cannot accidentally collect above the cap
- Move-in inspection protocol: Every NGC-managed move-in includes a standardized digital inspection form with room-by-room photo documentation, tenant signature collection, and cloud storage — readily available if a dispute arises
- 21-day countdown tracking: The system logs the tenant's move-out date and sends alerts at Day 7 and Day 14 to ensure invoices and itemizations are assembled in time
- Itemized statement generation: NGC generates compliant itemized statements with attached invoice copies, automatically formatted to meet California's documentation requirements
- Deposit accounting ledger: Every deposit is tracked on a per-unit basis with a full audit trail from receipt to return
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Frequently Asked Questions — Security Deposits & AB 12
What is the maximum security deposit in California in 2025?
Under AB 12, effective July 1, 2024, most landlords are limited to one month's rent as the maximum security deposit, regardless of whether the unit is furnished or unfurnished. The only exception is the "small landlord" — an individual (not a corporation or LLC) owning no more than two properties totaling no more than four units — who may still collect up to two months' rent.
How long does a landlord have to return a security deposit in California?
21 calendar days from the date the tenant actually vacates and returns possession — not the lease end date. The landlord must return any remaining balance along with a written, itemized statement of all deductions, supported by copies of receipts or invoices. Missing this deadline, even by a day, can expose you to the full bad-faith penalty.
What can a California landlord deduct from a security deposit?
Only four categories: unpaid rent; cleaning costs to restore the unit to move-in condition (not routine maintenance); damage beyond normal wear and tear; and repair or replacement of landlord-owned furnishings damaged beyond normal use. All deductions must be supported by itemized receipts or invoices. Normal wear and tear — faded paint, minor scuffs, carpet worn from regular foot traffic — is not deductible.
Can a landlord charge a separate pet deposit in California?
No separate "pet deposit" category exists under California law. Any money collected from a tenant that is intended to cover potential future damage — regardless of what you label it — counts as a security deposit and applies toward the cap. Under the AB 12 cap of 1 month's rent for most landlords, a separate pet deposit would likely push the total above the cap and constitute a violation.
What happens if a landlord fails to return a security deposit within 21 days?
The tenant may sue in small claims court for the amount wrongfully withheld. If the court finds bad faith — which includes simply failing to return the deposit without documentation — the landlord may owe up to twice the deposit amount as a civil penalty, on top of the actual deposit. Courts in California find bad faith frequently in deposit disputes.
Does AB 12 apply to leases signed before July 1, 2024?
AB 12 applies to new tenancies and new lease agreements signed on or after July 1, 2024. Pre-existing tenancies with leases signed before that date are generally grandfathered at the prior cap until the tenancy changes — such as a new lease signing, a significant rent increase, or a new tenant moving in. If you are unsure about a specific pre-July 2024 tenancy, consult a California landlord-tenant attorney.