RentGuard CA Tenant law, decoded.

A free toolkit for California renters

Know what
you’re owed.

Most California renters never check whether the rent hike, the deposit, or the eviction notice they received is actually legal. Three out of five rent increases we hear about aren’t. Type your facts in. Read the law back at your landlord.

The state has the strongest tenant-protection laws in the country — and the lowest rate of tenants who actually use them.

— California Attorney General’s tenant-rights advisory, summarized

§ 01 — Three checks

Pick the one that’s biting you.

Tool A — AB 1482 § 1947.12

Rent increase check

Enter your current rent, the proposed new rent, and where the unit is. We compute the legal annual maximum for your region and tell you if you’re over.

Tool B — AB 12 / Civ. Code § 1950.5

Security deposit check

Since July 1, 2024, California caps deposits at one month’s rent. A narrow exception lets very small landlords charge up to two.

Tool C — AB 1482 § 1946.2

Eviction notice check

If you’ve lived in your unit 12+ months, your landlord owes you a written reason from a fixed list — and, for “no-fault” reasons, one month’s rent in relocation assistance.

§ 02 — Send something in writing

Demand letter generator

Most California rent disputes resolve at the letter stage. Type your facts, get a polite, dated, citation-backed letter you can email or hand-deliver. Keep a copy.

§ 03 — The law, in plain English

If a landlord pushes back, here’s what to cite.

AB 1482 — the rent cap

Annual rent increases on most pre-2010 multifamily units are capped at the lower of 5% + regional CPI or 10%. Resets August 1 each year. Increases over 10% in 12 months also require a 90-day written notice instead of 30.

  • Cal. Civ. Code § 1947.12
  • Effective Jan 1, 2020 — sunset Jan 1, 2030

AB 12 — security deposits

For leases signed on or after July 1, 2024, deposits can’t exceed one month’s rent. A narrow exception lets a natural-person landlord (or LLC of natural persons) who owns ≤ 2 rental properties (≤ 4 units total) charge up to two months — but never against an active-duty service member.

  • Cal. Civ. Code § 1950.5
  • Pet deposits count toward the cap.

AB 1482 — just cause

After you’ve lived in a covered unit 12 months, the landlord must give a written reason from a fixed list. At-fault reasons (nonpayment, breach, nuisance) require a chance to cure where applicable. No-fault reasons (owner move-in, substantial remodel, withdrawal from market, gov order) entitle you to one month’s rent in relocation assistance, payable within 15 days of the notice.

  • Cal. Civ. Code § 1946.2
  • Cities like Los Angeles and SF stack stricter local rules on top.

What can a landlord legally do?

Plenty. Before the 12-month mark, no just-cause protection. Properties newer than 15 years are exempt from the rent cap. SFHs / condos owned by individuals (with a written exemption notice) sit outside AB 1482. Local rules can be stricter — not weaker. Read your lease before you write the letter.

§ 04 — If you need a real lawyer

Free and low-cost help in California

§ 05 — Sources

Every number above is footnoted.

  1. Public Policy Institute of CaliforniaCalifornia’s Renters. 6.1M renter households; 55% rent-burdened. ppic.org/blog/californias-renters
  2. NLIHC California Housing Profile, 2025 — California median rent $2,104 vs. national $1,319. nlihc.org PDF
  3. California Civil Code § 1947.12 — AB 1482 rent cap (5% + regional CPI, capped at 10%). leginfo.legislature.ca.gov
  4. California Civil Code § 1950.5 / AB 12 — 1× rent deposit cap effective July 1, 2024. leginfo.legislature.ca.gov
  5. California Civil Code § 1946.2 — Just-cause termination, no-fault relocation. leginfo.legislature.ca.gov
  6. Apartment Association, Southern California Cities — 2025-2026 regional CPI: LA 3.0% (cap 8.0%), SF 1.3% (6.3%), San Diego 3.8% (8.8%). aacsc.org
  7. California Attorney GeneralKnow Your Rights as a California Tenant. oag.ca.gov PDF
  8. SF.gov — California Tenant Protection Act of 2019 reference. sf.gov