Contra Costa County, California
How to get your security deposit back in Contra Costa County
Updated August 2026 · California security deposit rules
How long does my landlord have to return my security deposit in California?
In most cases, your landlord must return your deposit, or send an itemized list of deductions with any remaining money, within 21 calendar days after you move out and give back possession. If that did not happen, that is an important warning sign that the withholding may not be legal.
The countdown usually starts when you move out and return the keys. If your landlord mailed a statement and partial refund on time, the next question is whether the deductions were allowed and properly documented.
Allowed deductions generally include unpaid rent, cleaning needed to restore the unit to the level of cleanliness it had at the start of your tenancy, repair of damage beyond ordinary wear and tear, and sometimes replacing missing property. Ordinary wear and tear means normal aging from living in the unit, like lightly worn carpet or small nail holes in many situations.
Can my landlord legally keep my security deposit?
Sometimes yes, but only for specific reasons. A landlord generally cannot keep your deposit for routine aging, repainting that is only needed because of normal use, or charges that are vague, inflated, or unsupported.
A deduction is more likely to be legitimate if your landlord can explain exactly what was damaged or unpaid, how the amount was calculated, and why the cost was reasonable. If the landlord deducted more than $125, they generally must provide receipts or a good explanation of the work and cost.
Common deductions that may be improper
- Charging you for ordinary wear and tear instead of actual damage
- Keeping money without sending an itemized statement within 21 calendar days
- Using flat cleaning or painting fees without explaining the condition of the unit
- Charging for upgrades or full replacement when a repair would have been enough
- Deducting for work but not providing receipts or documentation when required
What if my landlord did not send receipts or a detailed list?
That can help your case. When deductions go over $125, landlords generally need to provide receipts or other documentation, unless a narrow exception applies.
If you got a one-line message like "cleaning and repairs" with no details, ask for a breakdown in writing. Save screenshots, envelopes, emails, move-in photos, move-out photos, your lease, and any inspection messages. In a deposit dispute, documents often matter more than arguments.
How much could I recover?
You may be able to recover the part of the deposit that was wrongfully withheld. In some cases, if a landlord kept the deposit in bad faith, a court may also award a penalty of up to twice the deposit.
Bad faith usually means more than a simple mistake. It can include knowingly ignoring the deadline, inventing charges, or withholding money without a real basis. Not every late or incorrect deduction leads to a penalty, but the possibility can make a demand letter more persuasive.
If you are thinking about small claims, an individual can generally sue for up to $12,500 there. Small claims is often the practical path for deposit disputes because it is designed for people handling their own cases.
Do I have to send a demand letter before filing small claims in Contra Costa County?
Yes, generally you should make a demand before filing. California requires a pre-filing demand in small claims cases under Code of Civil Procedure § 116.320, and sending a clear written demand also gives you a chance to resolve the dispute without a court date.
Your demand letter should say what happened, why you believe the deductions were improper, how much you want back, and where the landlord can send payment. Keep the tone calm and factual. Attach key photos or the itemized statement if that helps.
- State when you moved out and when you returned possession.
- Say whether you received the deposit or itemized statement within 21 calendar days.
- List each deduction you dispute and why.
- Ask for the specific amount you want returned.
- Keep proof that you sent it.
Where do I file a small claims security deposit case in Contra Costa County?
Contra Costa County small claims matters are heard in Martinez, Pittsburg, and Richmond. Which courthouse makes sense can depend on where the rental property is, where the landlord does business, or other filing rules, so confirm the correct location with the court before you go.
This county detail matters because Contra Costa does not route every renter to one single courthouse. If your old apartment was in Richmond, Concord, Walnut Creek, Antioch, Pittsburg, Martinez, San Ramon, or Brentwood, do not assume the hearing will be near your current home.
If you need to check where to file or where your hearing is set, start with the Contra Costa County Superior Court and confirm before taking time off work. The main court phone is (925) 608-1000, and the clerk window hours are 8:00 a.m. to 4:00 p.m., with most clerks answering phones from 8:00 a.m. to 3:00 p.m..
Contra Costa courthouse locations people often need
- Martinez courthouse: 725 Court Street, Martinez, CA 94553
- Pittsburg courthouse: 1000 Center Drive, Pittsburg, CA 94565
- Small claims are heard in Martinez, Pittsburg, and Richmond
What are my options besides going straight to court?
You usually have four realistic options: send a demand letter, try mediation, file in small claims, or decide the amount is not worth chasing. The best choice depends on how strong your proof is, how much money is involved, and whether the landlord seems reachable.
| Option | When it makes sense | Pros | Watch out for |
|---|---|---|---|
| Demand letter | You have photos, your lease, and a clear explanation of why the deduction was wrong | Cheap, fast, and required in most small claims cases | Some landlords ignore it |
| Mediation | You want a settlement without a hearing | Less stressful, can preserve references, flexible outcomes | Works only if both sides participate in good faith |
| Small claims | You want a judge to decide and the amount fits under $12,500 | Designed for self-represented people, often effective for deposit disputes | Takes time, preparation, and a hearing date |
| Judicaid | You want help organizing a demand or settlement push before filing | Flat price of $34.99 per case and can be one option short of court | It is not legal advice and it cannot guarantee payment |
| Walk away | Your proof is weak or the amount is too small for the stress | No more time spent on it | You may leave money uncollected |
What evidence helps most in a Contra Costa County deposit case?
The best evidence usually shows the unit's condition before and after you lived there, plus the landlord's timing and paperwork. Bring documents that make it easy to compare what the landlord claimed with what actually happened.
- Your lease and any deposit receipt
- Move-in photos or videos
- Move-out photos or videos taken after cleaning
- The itemized statement and any receipts the landlord sent
- Texts, emails, and letters about repairs, cleaning, and key return
- Proof of when you moved out and returned possession
- Any witness statements from roommates, cleaners, or walk-through attendees
If you file in Contra Costa County, organize your evidence so a stranger can follow it quickly. Put events in date order. Label photos by room. Bring copies. A simple timeline often helps more than a long story.
What if my landlord says the deposit was limited by the new California cap?
For deposits collected on or after the law's effective date, the general cap is one month's rent. There is also a small-landlord exception that may allow two months' rent in some situations.
That issue matters more when you are challenging how much was collected in the first place, not just whether deductions were proper at move-out. If your dispute is mainly about money not returned after you left, focus first on timing, itemization, receipts, and whether the charges were for actual damage rather than normal wear.
How do I prepare for a small claims hearing in Contra Costa County?
Prepare as if you will have only a few minutes to explain everything clearly. You want to show the court what the landlord took, why you say it was improper, and what documents support your position.
- Make a short timeline from move-in to move-out.
- Total the amount you say should be returned.
- Match each disputed deduction with photos or documents.
- Bring your demand letter and proof you sent it.
- Confirm the hearing location because Contra Costa small claims cases are heard in Martinez, Pittsburg, and Richmond.
- If you need filing help or directions, call (925) 608-1000 during 8:00 a.m. to 4:00 p.m., with most clerks answering phones from 8:00 a.m. to 3:00 p.m..
If you want to try settlement before the hearing, you can still do that after filing. Some renters use a final demand or a service like Judicaid to see whether the landlord will resolve the dispute without making both sides appear.
Frequently asked questions
What if I moved out of an apartment in Concord or Walnut Creek but now live somewhere else?
You can still pursue the claim in Contra Costa County if that is where the rental dispute belongs. Small claims matters in this county are heard in Martinez, Pittsburg, and Richmond, so confirm the correct courthouse with the court before filing or appearing.
Does my landlord have to give me receipts for cleaning and repairs?
Generally, yes, when deductions exceed $125. If you did not get receipts or a clear explanation, that may weaken the landlord's position and strengthen yours.
Can I sue for more than just the deposit itself?
Sometimes. If you can show the landlord kept the money in bad faith, a court may award a penalty of up to twice the deposit in addition to returning wrongfully withheld funds.
Do I need a lawyer for a security deposit case?
Most renters handle deposit disputes without a lawyer, especially in small claims. The key is having organized proof, sending a proper demand first under Code of Civil Procedure § 116.320, and being ready to explain the deductions one by one.
Where can I check filing information for Contra Costa County?
Start with the Contra Costa County Superior Court. You can call (925) 608-1000 and, if you are going in person, remember the clerk window hours are 8:00 a.m. to 4:00 p.m., with most clerks answering phones from 8:00 a.m. to 3:00 p.m..
What if my landlord sent the statement late but the charges seem partly valid?
Late mailing can still matter, but it does not automatically mean you recover everything in every case. Generally, you should challenge both the timing and any deductions that were unsupported, excessive, or based on ordinary wear and tear.
This guide is general information, not legal advice, and Judicaid is not a law firm. Court fees, dollar limits, and procedures change — always verify current details with the Contra Costa County Superior Court (cc-courts.org) or a licensed California attorney before acting.