California Small Claims Evidence Guide

The evidence you bring determines whether you win or lose—here's how to prepare

Evidence Wins Cases

Small claims court is informal, but the judge still needs evidence to rule in your favor. The party with better organized, more persuasive documentation almost always wins.

I've watched clients lose cases they should have won because they showed up unprepared. Don't let that be you. This guide covers exactly what to bring and how to present it.

Types of Evidence You Can Use

Documents

  • Contracts and agreements
  • Invoices and receipts
  • Emails and text messages
  • Letters and correspondence
  • Bank/payment records
  • Repair estimates

Photos & Videos

  • Property damage photos
  • Before/after comparisons
  • Video recordings
  • Screenshots
  • Surveillance footage

Witness Testimony

  • Live witness in court
  • Written declarations
  • Expert opinions (rare)
  • Your own testimony

Physical Evidence

  • Defective products
  • Damaged items
  • Samples
  • Diagrams and drawings

Evidence Checklist by Case Type

Contract Dispute / Money Owed

  • Signed contract or written agreement
  • Invoices showing amounts owed
  • Proof of goods/services delivered
  • Payment history (what was paid, when)
  • Communications about the debt
  • Demand letters you sent
  • Calculator showing total with any interest

Security Deposit Dispute

  • Rental agreement/lease
  • Move-in and move-out inspection reports
  • Photos: condition at move-in vs. move-out
  • Landlord's itemized statement (or proof none sent)
  • Receipts for cleaning or repairs you did
  • Evidence of how long you rented
  • Any correspondence with landlord

Property Damage / Auto Accident

  • Police report (if applicable)
  • Photos of damage (multiple angles)
  • Repair estimates (get 2-3)
  • Actual repair invoices if already fixed
  • Proof of vehicle/property ownership
  • Insurance correspondence
  • Witness statements

Defective Product / Bad Service

  • Purchase receipt
  • Warranty documentation
  • Photos/video of defect
  • The defective product (if portable)
  • Repair attempts documentation
  • Communications with seller
  • Comparable product prices (for replacement value)

How to Organize Your Evidence

Presentation matters. Judges appreciate organized plaintiffs who respect the court's time.

The Exhibit Binder Method

  1. Create an exhibit list numbering each document
  2. Make three copies of everything (you, defendant, judge)
  3. Put in a binder with tabs for each exhibit
  4. Number pages if documents are multi-page
  5. Highlight key passages the judge needs to see

Sample Exhibit List

Exhibit 1: Signed Service Agreement (3 pages)
Exhibit 2: Invoice #4521 dated 03/15/2024
Exhibit 3: Email correspondence (7 pages)
Exhibit 4: Photos of completed work (5 images)
Exhibit 5: Demand letter dated 05/01/2024
Exhibit 6: Payment history from QuickBooks
Pro Tip: Create a one-page summary at the front of your binder. Include: parties, amount sought, what happened, and which exhibits prove each point. Judges love this.

Do's and Don'ts of Evidence Presentation

DO

  • Bring originals when possible
  • Make copies for all parties
  • Organize chronologically or by topic
  • Highlight relevant sections
  • Be ready to explain each document
  • Keep evidence relevant to the claim
  • Practice explaining your evidence

DON'T

  • Bring boxes of unsorted papers
  • Include irrelevant documents
  • Assume the judge will read everything
  • Bring evidence you can't explain
  • Forget copies for opponent
  • Bring illegible or tiny prints
  • Present emotional arguments without proof

Photos and Digital Evidence

Best Practices for Photos

Text Messages and Emails

Authentication: Be prepared to testify that photos/messages are authentic. "I took this photo on [date]" or "This is a printout of the text messages from my phone" is usually sufficient in small claims.

Using Witnesses

Live Witnesses

The best option when possible:

Written Declarations

If a witness cannot attend, get a written statement:

Declaration Format

"I, [Full Name], declare under penalty of perjury under the laws of the State of California that the following is true and correct:

[Statement of what they witnessed]

Executed on [Date] at [City], California.

[Signature]"

Note: Written declarations carry less weight than live testimony. Judges may discount them because the witness can't be questioned. Use live witnesses when the testimony is critical.

Evidence Rules in Small Claims

Small claims court relaxes some formal evidence rules, but not completely:

What's Generally Allowed

What Can Still Be Excluded

Reality Check: Judges in small claims want to reach the right result. If your evidence is helpful and relevant, it will usually be considered. Focus less on technical rules and more on clearly proving your case.

Subpoenas: Getting Evidence You Don't Have

If someone has evidence you need and won't give it voluntarily, you can subpoena it:

Form SC-107: Small Claims Subpoena

When to Use Subpoenas

Plan Ahead: Subpoenas require time to process and serve. Don't wait until the last minute. Get them out at least 2-3 weeks before your hearing.

Want Help Preparing Your Evidence?

A strong evidence package can be the difference between winning and losing. I can help you identify what evidence you need, organize it effectively, and prepare your presentation strategy.

Schedule a Consultation
Consultations at $240/hour