What’s Inside — All 25 Sections
PART I — SITUATION ASSESSMENT (Sections 1–4)
Section 1 — Decision Tree: Four gates — eviction, deposit, habitability, rent — routing you to the right defense path.
Section 2 — Rights Reference: Every key statute — Civil Code 1950.5, 1941, 1942, 1942.5; CCP 1161; AB 1482.
Section 3 — Evidence Worksheet: Lease, notices, photos, repair requests, rent records, communications.
Section 4 — Violation Identifier: Every landlord violation with the remedy it triggers.
PART II — EVICTION DEFENSE (Sections 5–8)
Section 5 — 3-Day Notice Analyzer: Every fatal defect — wrong amount, wrong service, wrong dates. Each one voids the case.
Section 6 — UD Answer Guide: Form UD-105 step by step. Every affirmative defense in California — and how to stack multiple defenses on a single answer when your situation involves more than one violation.
Section 6A — UD Answer Defense Checklist
Before you file Form UD-105, run through every defense category below. Check every box that applies to your situation — then assert ALL of them in your answer. Most tenants only raise one defense. Raising every valid defense simultaneously is what forces landlords to settle or lose.
CATEGORY 1 — Notice Defects (UD-105 Item 3a)
Check any that apply to your 3-day notice:
| ☐ | Wrong amount demanded — Notice includes late fees, utilities, or other charges beyond base rent. Even $1 over the actual rent owed voids the notice. |
| ☐ | Wrong tenant name(s) — Notice names the wrong person, misspells your name, or omits a tenant listed on the lease. |
| ☐ | Missing payment information — Notice does not state the name, address, AND phone number where rent can be paid. |
| ☐ | Improper service — Personal service not attempted first. Substituted service skipped steps. Post-and-mail not done in correct sequence. Served too late in the day. |
| ☐ | Wrong date calculation — The three days do not exclude the day of service plus weekends and court holidays. Short by even one day = defective. |
| ☐ | Wrong property description — Notice describes the wrong address or unit number. |
| ☐ | No genuine opportunity to pay — Notice demands only that you vacate with no option to pay and remain. |
Any single defect above = complete defense. The case must be dismissed and re-filed.
CATEGORY 2 — Habitability (UD-105 Item 3b)
| ☐ | Uninhabitable conditions — Mold, rodents, broken heat, leaking roof, no hot water, broken plumbing, electrical hazards, or other conditions violating Civil Code 1941.1. Landlord knew and failed to repair. |
| ☐ | Rent withheld for habitability — You withheld rent because of uninhabitable conditions. Habitability failure is a complete defense to nonpayment eviction if properly documented. |
| ☐ | Repair-and-deduct performed — You exercised your Civil Code 1942 right and deducted the cost of repairs from rent. Prior written notice given. Deduction within one month’s rent. |
CATEGORY 3 — Retaliation (UD-105 Item 3c)
| ☐ | Written repair request within 180 days — You sent a written complaint about conditions to the landlord within 180 days of the eviction notice. Civil Code 1942.5 presumes retaliation. Landlord must disprove it. |
| ☐ | Government agency complaint within 180 days — You contacted a building department, health department, rent board, or other agency within 180 days. Same presumption applies. |
| ☐ | Tenant organizing or union activity within 180 days — You organized with other tenants or joined a tenant association within 180 days. |
| ☐ | Exercised any legal right within 180 days — Any exercise of a statutory tenant right within 180 days is a protected activity triggering the presumption. |
CATEGORY 4 — Rent Control Violations (UD-105 Item 3d / Other)
| ☐ | AB 1482 illegal rent increase — Building is 15+ years old, no written exemption notice given. Landlord raised rent beyond 5%+CPI cap. Nonpayment of the illegal excess is not grounds for eviction. You owe only the legal rent. |
| ☐ | Local rent control violation — City has stronger rent control (LA, SF, Oakland, San Jose, etc.) and landlord violated local ordinance rent cap or just cause requirement. |
| ☐ | Eviction without just cause — AB 1482 or local ordinance requires just cause. Landlord has not stated or cannot prove a qualifying just cause for eviction. |
CATEGORY 5 — Discrimination (UD-105 Item 3e / Other)
| ☐ | Source of income discrimination — Eviction motivated by your use of Section 8, housing voucher, or other lawful income source. FEHA §12955 prohibits this statewide. |
| ☐ | Protected class discrimination — Race, color, national origin, religion, sex, familial status, disability, sexual orientation, gender identity, ancestry, or marital status. Fair Housing Act + FEHA apply. |
CATEGORY 6 — Procedural / Waiver (UD-105 Item 3f / Other)
| ☐ | Landlord accepted rent after serving notice — Landlord cashed or accepted any rent payment after the 3-day notice was served. This waives the notice and the right to proceed on it. |
| ☐ | Rent was tendered and refused — You offered the full rent owed during the notice period and the landlord refused to accept it. Refusal of valid tender is a complete defense. |
| ☐ | Lease has not expired — You have a fixed-term lease that is still in effect and the landlord has no just cause to terminate it early. |
| ☐ | Improper plaintiff — The person or entity filing the UD is not the actual owner or authorized agent named in your lease or rental agreement. |
How to Use This Checklist With Your UD-105
Every box you checked above corresponds to a defense on Form UD-105. Check the matching boxes on the form. In the “Other” section (Item 3f), write a one-sentence description of each defense you’re raising — the statute, the fact, and the legal conclusion. Example: “The 3-day notice is void under CCP §1161 because it includes $150 in late fees not payable as rent, overstating the amount owed.”
You are not limited to one defense. Every valid defense you identify gets its own line. The landlord must defeat every one of them.
Section 6B — Claude AI Prompt: Multi-Defense UD Answer Builder
After running the checklist above, use this prompt to build the complete written language for each defense on your UD-105. Paste into claude.ai (free).
The key principle: Every valid defense gets its own statement. The landlord must defeat every one. One defective notice + one retaliation claim + one AB 1482 violation = three separate hurdles the landlord must clear before you owe anything or must leave.
The San Diego Example — Checklist Applied
Tenant ran the checklist: Category 1 → box checked (wrong amount — late fees included = notice void). Category 3 → box checked (written mold complaint 14 days before notice = retaliation presumed). Category 4 → box checked (1987 building, 18% increase vs. 8.2% AB 1482 cap = illegal rent). Three boxes checked. Three defenses on Form UD-105. Landlord faces dismissal on the notice, a rent refund obligation, and a presumption of bad faith simultaneously. She came in thinking she had to move out.
Section 7 — UD Hearing Preparation: What to bring, how to present defenses, cross-examination strategy.
Section 8 — Wrongful Eviction and Lockout: $100/day lockout damages, TRO procedure, utility shutoff remedies.
PART III — MONEY CLAIMS (Sections 9–12)
Section 9 — Security Deposit: 21-day rule, bad faith withholding, 3x damages. Small Claims filing guide.
Section 10 — Habitability: Repair-and-deduct, rent withholding, rent reduction. Written notice requirements.
Section 11 — Rent Control (AB 1482): Coverage test, 5%+CPI cap, illegal increase refund demand.
Section 12 — Retaliation Defense: 180-day presumption, protected activities, affirmative defense.
PARTS IV–VII — LETTERS, SPECIAL SITUATIONS, AI LIBRARY (Sections 13–25)
Sections 13–16 — Four Demand Letters: Security deposit return, habitability repair notice, illegal rent increase refund, retaliation warning.
Section 17 — Local Rent Control: LA, San Francisco, Oakland, San Jose — stronger protections than AB 1482.
Section 18 — Discrimination Defenses: Fair Housing Act, FEHA, source of income, familial status.
Section 20 — Small Claims Strategy: Deposit claims, habitability damages, illegal rent — maximizing recovery.
Section 22 — Move-Out Strategy: Protect your deposit before you leave. Proper notice. Walkthrough procedure.
Section 25 — AI Prompt Library: All 14 Claude prompts with master directory and tips.
The Analyzer in Action — A Real Example
Here is what happens when a tenant uses the kit’s Claude AI Prompt Analyzer with their own facts. This example was run by a renter in San Diego who received a 3-day notice after complaining about a mold problem, and whose landlord was also trying to raise rent by 18%.
Input to the Analyzer
I rent a 2BR apartment in San Diego. $2,200/month. Building is from 1987. I sent my landlord a written email about mold in the bathroom on March 1. On March 15 he served me a 3-day notice to pay or quit for $2,350 — my rent is $2,200 but the notice includes $150 in late fees. He also sent a rent increase notice raising my rent to $2,596 effective next month (18% increase). I have the email, the notice, and my lease.
What Claude Identified
Three separate legal issues — all in your favor:
Issue 1 — The 3-day notice is void. Under CCP §1161, a 3-day notice must state the exact rent owed — not rent plus fees. Your notice demands $2,350, which includes $150 in late fees. Late fees cannot be included. The notice is legally defective. If UD is filed on this notice, raise the defect in Form UD-105 and the case must be dismissed.
Issue 2 — The rent increase is illegal. 1987 building. AB 1482 applies. Legal maximum: ~8.2% (5% + CPI). Landlord charged 18% — more than double the cap. Every month you pay $2,596 instead of $2,380, you are owed a refund of $216.
Issue 3 — Textbook retaliation. Written mold complaint March 1. 3-day notice March 15 — 14 days later. Civil Code §1942.5: retaliation presumed by law within 180 days of a protected activity. Your landlord must disprove it. Complete defense to eviction and independent damages claim.
Immediate action plan:
- Do NOT move out. The notice is defective.
- Send written response citing notice defect under CCP §1161
- Send AB 1482 letter demanding rent correction and refund
- Send retaliation warning citing Civil Code §1942.5 with the 14-day timeline
- If UD filed: Form UD-105 within 5 business days — raise all three defenses simultaneously
- File habitability complaint with San Diego Code Enforcement
Void — late fees included
18% vs. ~8.2% legal max
14 days = presumed
Educational use only. Not legal advice. Justice Foundation.
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