Organized evidence beats a scattered pile
Well-organized evidence is far more useful than a scattered pile, so a little structure goes a long way toward protecting your rights.
Keep everything in one place, and back it up. Save original photos and videos, copies of every written repair request and landlord response, inspection reports, medical records, receipts, and notes about witnesses. Storing copies in more than one location — for example, on your device and in a cloud account or emailed to yourself — protects against loss.
Organize by date so your timeline is clear: when problems started, when you reported them, what the landlord did, and what harm resulted. A simple written chronology tying your evidence together is extremely valuable.
Do not delete anything, even after a problem seems resolved, and keep originals rather than only edited or forwarded versions, since originals carry more reliable information.
This organization not only strengthens your case but also makes it much easier for an attorney or agency to help you. If you are gathering evidence about a rental problem and want to make sure it is preserved and organized effectively, a free, confidential review can help you get it in order.
This is general information about California tenant rights, not legal advice. Every situation is different.