Raising rent in Los Angeles should be the simplest thing a landlord ever does. In practice, it’s where owners get into the most trouble — not because the increase itself is wrong, but because the notice is wrong. Wrong number of days. Wrong percentage. Wrong delivery method. Wrong basis math. Each of these mistakes hands the tenant a defense and resets the timeline, sometimes by months.
This is the 2026 plain-English guide to rent increases in LA: how much you can raise, how long the notice must be, how to deliver it so it actually counts, and the specific small mistakes that get owners sued in small-claims court or push a tenant into a habitability defense they wouldn’t otherwise have raised.
Which rules apply to your property
Before you write a number, you have to know which framework governs your unit. There are three possibilities for most LA rentals:
1. LA Rent Stabilization Ordinance (RSO)
Applies to most multifamily buildings in the City of Los Angeles built on or before October 1, 1978 (with some exceptions for single-family homes and condos). RSO units get the lowest annual allowable increases — typically tied to CPI with a hard cap, currently in the 3–4% range, often lower depending on the year. Always check the LA Housing Department for the current published rate.
2. AB 1482 (Tenant Protection Act of 2019)
The statewide cap. Applies to most multifamily 15+ years old and certain other properties, and is the default for anything not under a stricter local rent control. The cap is 5% + local CPI, with a hard ceiling of 10%. CPI varies by region — for LA-area properties, the relevant index is the LA-Long Beach-Anaheim CPI. In typical years that produces an allowable increase in the 7–9% range.
3. Fully exempt properties
Single-family homes and condos owned by individuals (not LLCs or corporations) are generally exempt from AB 1482 — IF the owner provided the proper exemption notice in the lease at signing. Without that notice, AB 1482 applies anyway. Newer construction (under 15 years) is exempt at the state level but may still be subject to local rules.
Where this trips owners up: Many single-family owners assume they’re “exempt” because the unit is a house, then discover at increase time that they never gave the AB 1482 exemption notice — so the cap applies. If you’re not sure whether your lease has the exemption language, look before you raise.
How much can you actually raise?
RSO units
Check the LA Housing Department’s published annual allowable increase. It changes each year and is published well in advance of the July 1 effective date for most cycles. RSO also limits frequency to once per 12 months per unit.
AB 1482 units
The formula is: 5% + LA-area CPI (12-month average), capped at 10% total. You can raise rent up to twice in any 12-month period, but the total of both increases combined still cannot exceed the annual cap.
Exempt units
No statutory cap, but you still owe proper notice and you cannot raise as retaliation or in a way that violates fair-housing rules.
The notice rules — and the 60-day trap
This is where most owners go wrong. The rule under California Civil Code § 827(b) is:
- Increases of 10% or less (calculated against the lower rent at any time in the prior 12 months): 30 days’ written notice.
- Increases of more than 10%: 90 days’ written notice. (Note: the often-cited “60-day rule” is a relic — current law is 30 or 90.)
The trap: the percentage isn’t calculated against current rent — it’s against the lowest rent in the prior 12 months. So if you raised by 5% six months ago and want to raise by another 6% now, that’s 11.3% cumulative against the rent of a year ago, and you owe 90 days of notice, not 30.
For RSO and most AB 1482 units, you’re capped well below 10% per year anyway, so 30-day notice will usually be sufficient. But the calculation method is what gets owners.
How to deliver the notice (correctly)
The notice has to actually be served on the tenant. The three legally recognized methods:
- Personal service — handed directly to the tenant. Best evidence; counts as served on the day delivered.
- Substituted service — left with another adult at the property AND mailed by first-class mail. Counts as served when both steps are complete.
- Service by mail — first-class mail to the tenant. Counts as served, but California courts add 5 additional days for mailing. If you mail a 30-day notice, the effective notice period is 35 days.
Email and text are not sufficient on their own. If you want to use them as a convenience or backup, fine — but you also need one of the three methods above to be legally effective.
The owner mistake we see most often: texting “rent is going up by $200 on July 1” and considering that notice. It isn’t. If the tenant doesn’t pay the new amount and you try to enforce, the court will find that no proper notice was given, and you’ll have to start the 30-day clock over from scratch.
What the notice itself must say
A proper rent-increase notice in California should include:
- Tenant’s name(s) and the property address.
- The current rent amount.
- The new rent amount and the dollar/percentage increase.
- The effective date of the new rent (must be at least 30 or 90 days from service).
- If under AB 1482 or RSO, a reference to the governing framework and the allowable increase calculation supporting your number.
- Owner/manager signature and date served.
For RSO units, you may also need to file a notice with the Housing Department or include specific RSO disclosure language — confirm current LA Housing Department guidance.
The mistakes that get owners sued (or lose them the case)
1. Counting the days wrong
The notice period excludes the day of service and includes the effective date. A 30-day notice served on June 5 is effective on July 5 — not July 1. If you wrote July 1 on a notice served June 5 by mail, you’re already short by 9 days because of the 5-day mail buffer.
2. Raising above the cap
If your unit is under AB 1482 or RSO and you exceed the allowable percentage, the tenant has a defense and can recover not just the difference but, in some cases, statutory damages and attorney’s fees.
3. Stacking two increases that together exceed the annual cap
You can raise twice per year under AB 1482 — but the combined increase still has to be under the cap. Owners who raise 6% in March then try another 5% in October trip this wire constantly.
4. Forgetting the exemption notice for SFR/condo owners
If you own a single-family rental or condo and want AB 1482 exempt status, the exemption notice must have been provided at lease signing or in writing during the tenancy. Without that paperwork, you’re treated as a capped property.
5. Retaliatory or discriminatory timing
Raising rent within six months of a tenant exercising a legal right (filing a habitability complaint, requesting a reasonable accommodation, joining a tenant organization) creates a presumption of retaliation. Even a properly calculated and noticed increase can be successfully challenged on retaliation grounds.
6. Issuing the notice during a lease term
You generally cannot raise rent during a fixed-term lease — only on renewal or for month-to-month tenancies. Increasing rent mid-lease without a contractual clause allowing it is breach.
The owner’s practical checklist
Before you serve any rent increase notice in 2026, run through:
- Confirm which framework applies (RSO / AB 1482 / exempt).
- Pull the current allowable percentage for your framework.
- Calculate the increase against the lowest rent in the prior 12 months (not just current rent).
- Confirm the percentage doesn’t exceed 10% — if it does, prepare a 90-day notice.
- Confirm no recent legally-protected tenant activity that could create a retaliation defense.
- Choose service method (personal, substituted, or mail with 5-day buffer).
- Write the notice with all required elements (above).
- Serve, document the service (proof of service form for personal/substituted, certified mail receipt for mail), and effect the increase on the correct date.
Frequently asked questions
What if the tenant just refuses to pay the new amount?
Once the increase is properly noticed and the effective date has passed, the new amount is the legal rent. Non-payment is grounds for a 3-day notice to pay or quit — but only if everything upstream (notice timing, cap, service method) was done correctly. One mistake anywhere in the chain typically restarts you at zero.
Can I raise rent at lease renewal regardless of the cap?
No. The cap applies to renewal increases too. You can renew at any rent up to the cap, but you cannot use renewal as a way around it. The only “uncapped” moment is between tenancies, when a new tenant moves in (vacancy decontrol, where applicable).
Does the cap apply to month-to-month tenants?
Yes — RSO and AB 1482 both apply regardless of whether the tenancy is fixed-term or month-to-month. The lease type doesn’t change the regulatory framework.
What if I make a mistake on a notice I’ve already served?
The safe move is to withdraw the defective notice in writing and serve a corrected one. The clock restarts from the corrected service date. Don’t try to “fix” the original notice mid-period — that almost always creates more problems.
Should I consult an attorney before every increase?
Not for routine annual increases on stabilized units where the math is straightforward. Yes for any increase above the cap, for any tenant who has been making complaints, for any unit where the regulatory status is ambiguous, or for the first increase you serve on a new portfolio. The cost of a 30-minute attorney consult is dramatically less than the cost of a defective notice.
Need help raising rent the legal way?
We calculate the allowable increase for each unit, draft compliant notices, serve them with documented proof of service, and track the cumulative 12-month math so you never stack into a defect. Free 30-minute owner consultation — we’ll review your portfolio.
Book My Free Consultation →Disclaimer: This article is general information for California rental property owners and is not legal advice. California Civil Code § 827(b), the LA Rent Stabilization Ordinance, and AB 1482 are detailed statutes with frequent updates; how they apply depends on your specific property, tenancy, and the current published rates. Allowable percentages change annually. Consult a qualified California real estate attorney before serving any rent increase notice, particularly if your property is under rent control, if the cumulative 12-month increase approaches the cap, or if a tenant has recently exercised a protected right.
