October 10, 2026 · 6 min read
The evidence checklist judges actually want
Ask any small claims judge what decides their cases and you will get the same answer: documents. Not sincerity, not fairness, not who seemed more reasonable.
The principle
A small claims hearing gives you a few minutes against someone who will contradict you. Where it is your word against theirs, the judge has no basis to prefer either. Where you have a dated document and they have a recollection, you win.
So the question is never "am I right". It is "what can I show".
The universal checklist
Bring all of these in every case, whatever the dispute:
The agreement
Contract, signed estimate, lease, work order, or the email where they accepted your quote. If nothing was signed, the message thread where terms were discussed does the same job and often does it better, because it is dated and in their own words.
Proof money moved
Canceled checks, bank statements, card statements, Zelle or Venmo records, receipts. Highlight the relevant line and print the single page — a judge skimming forty pages will not find it.
Proof of performance or of the loss
Photographs, delivered files, a signed sign-off, delivery receipts. Whatever shows you did your part, or shows the damage they caused.
The full message thread
Texts, emails, WhatsApp, DMs — printed with dates visible. This is the most undervalued evidence in small claims. People admit things in messages they would never admit in a courtroom: "I'll pay you Friday", "sorry, I know it's late", "I'll come back and fix it".
Your demand letter and proof you sent it
Answers the question you will definitely be asked, and satisfies what the SC-100 asked you to confirm.
The number, broken down
A one-page sheet showing how you reached the total. Deposit $1,800 + completion cost $640 + materials $200 = $2,640. A figure you can explain survives; a round number you cannot gets cut.
A third-party quote or valuation
Two written repair quotes, a replacement cost, a second mechanic's diagnosis. Judges want a number from someone with no stake in the outcome, not your estimate of your own loss.
By claim type
| Claim | The document that usually decides it |
|---|---|
| Security deposit | Dated move-in photographs, plus the absence of any 21-day itemized statement |
| Unpaid invoice | The accepted quote plus proof of delivery plus the message praising the work |
| Contractor took a deposit | The dated CSLB license printout — if unlicensed, § 7031 ends the argument |
| Car repair overcharge | The written estimate beside the final invoice |
| Car accident | Two body shop estimates plus scene photographs |
| Personal loan | Any message referring to paying it back — loan versus gift is the whole case |
| Property damage | Two independent repair quotes, not one |
| Bad check | The certified-mail receipt for your § 1719 demand |
| Dog bite | Immediate injury photographs plus the animal control report |
| Used car sold with defects | A mechanic’s written opinion that the defect pre-dated the sale |
The five documents people always forget
- Proof of the date, not just the fact. When you handed back the keys, when you sent the demand, when they received it. Deadlines run from dates, and an undated claim is hard to assess.
- The license or registration check. CSLB for contractors, Secretary of State for entities, DMV for dealers. Print it with the date you looked.
- Evidence you tried to limit the loss. You have a duty to mitigate. The replacement quote, the reasonable wait, the attempt to resolve it — all of that answers a question a defendant will raise.
- The chance you gave them to fix it. One written request with a deadline. Judges respond well to a plaintiff who offered a cure and badly to one who went straight to court.
- Your filing fee and service receipts. Recoverable as costs, but only if you ask and can prove them.
How to present it
- Three sets. Judge, other side, you.
- Numbered in the order you will speak. Write "Exhibit 1" on the page in marker.
- Strongest first. The contract or the admission, not the background.
- One page per point where possible. Highlight the line that matters.
- Printed, not on your phone. You may be allowed to show a screen, but you cannot hand a judge your phone, and fumbling for a screenshot while the court waits costs you credibility.
- A one-page summary on top — the parties, the dates, the amount, the exhibit list. Judges appreciate it more than you would expect.
Witnesses
A witness who attends in person and can answer the judge's questions is worth several written statements. A signed declaration from someone who did not come will usually be discounted, because the other side cannot question it. If a witness genuinely cannot attend, a declaration is better than nothing — but if they can attend, ask them.
Screenshot everything now
Before you send a demand letter, before you file, before the other side realises this is becoming formal: screenshot the message threads, save the listing, download the invoice, photograph the damage again. People delete conversations and take down listings the moment money is genuinely in dispute, and a thread you remember is worth nothing compared with a thread you have.
Common questions
What evidence is most important in a small claims case?
Dated documents. The agreement or the message thread establishing terms, proof that money moved, proof of performance or of the loss, and an independent third-party quote for the amount. Where it is your word against theirs the judge has no basis to prefer either, so documents are the case.
How many copies of my evidence do I need?
Three sets — one for the judge, one for the other side, one for yourself. Number each exhibit in the order you intend to refer to it and write the number on the page so you are not shuffling paper while the court waits.
Can I show evidence on my phone?
Some courts permit it, but you cannot hand a judge your phone and searching for a screenshot in the moment costs you credibility. Print everything, with dates visible. Treat a phone as a backup, not your exhibit set.
Are text messages good evidence?
They are among the best, and badly underused. People admit in messages what they would never concede in a courtroom — promising to pay, apologising for lateness, offering to come back and fix something. Print the thread with dates and sender names visible, and screenshot it now, before anyone has a reason to delete it.
Start with a demand letter
Most California small claims cases settle before anyone sees a courtroom. The letter is free to write, and you can have us print and certified-mail it for $29.
No account needed to start. We are not a law firm and cannot give legal advice.