San Francisco Security Deposit Law (2026): Deadlines, Interest & Penalties
Under SF Admin. Code Ch. 49, a San Francisco landlord must return a tenant's security deposit within 21 days of move-out and must pay interest of 4.2% per year on the deposit. Fail to comply, and the tenant may recover state remedies + rent board process. Plug your lease dates and deposit amount into the calculator above for a statute-based breakdown.
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San Francisco Deposit Rules at a Glance
| Return deadline | 21 days after move-out State 21-day rule applies |
|---|---|
| Interest on deposit | 4.2% per year Held 1+ year |
| Separate account required | No |
| Deposit limit | 1 month (state AB 12) |
| Penalty for violations | State remedies + rent board process |
San Francisco Security Deposit FAQ
How long does a landlord have to return a security deposit in San Francisco?
In San Francisco, a landlord must return the security deposit within 21 days after the tenancy ends, under SF Admin. Code Ch. 49. Note: State 21-day rule applies.
Does my landlord owe me interest on my security deposit in San Francisco?
Under SF Admin. Code Ch. 49, a San Francisco landlord must pay interest of 4.2% per year on the deposit. Rate details: Set annually (4.2% effective March 2026).
What is the penalty if a landlord misses the deposit deadline in San Francisco?
State remedies + rent board process. The governing statute is SF Admin. Code Ch. 49.
Is there a limit on how much a landlord can charge as a security deposit in San Francisco?
Yes. In San Francisco, the security deposit is limited to 1 month (state AB 12).
Does a San Francisco landlord have to keep my deposit in a separate account?
No. San Francisco law does not require landlords to hold security deposits in a separate or escrow account.
Are there exceptions to the 21-day deposit deadline in San Francisco?
Yes — the deadline can vary: State 21-day rule applies. When in doubt, check the statute itself (SF Admin. Code Ch. 49) or ask a local tenant-rights organization.
When does the interest requirement apply in San Francisco?
Interest applies under these conditions: Held 1+ year. See SF Admin. Code Ch. 49 for the full rule.
What can I do if my landlord won't return my deposit in San Francisco?
First, send a written demand letter citing SF Admin. Code Ch. 49 — our free generator creates one with your amounts filled in. If the landlord still doesn't pay, you can usually file in small claims court, where the penalty exposure is state remedies + rent board process.