Updated June 21, 2026
On July 1, 2026, the most an owner can raise rent on a rent-stabilized Los Angeles apartment falls from a ceiling of 8% to a ceiling of 4%. Most owners think that date is when the rewrite happens. They are half right. Part of it already happened — quietly, on January 24 — and almost nobody priced it in until their accountant did.
This is the deadline page: what changes on July 1, what already changed in January, who it touches, and what fourteen years of closing LA multifamily says you should do about it in the next few weeks. It is a broker's read on the market and the math, not legal advice — for that, talk to a rent-control attorney about your specific building.
The Rent Stabilization Ordinance sets the allowable annual rent increase on pre-1978 City of Los Angeles buildings with two or more units. On July 1, 2026, the base formula changes:
| Component | Before | On July 1, 2026 |
|---|---|---|
| Base formula | 100% of CPI | 90% of CPI |
| Floor | 3% | 1% |
| Ceiling | 8% | 4% |
The headline is the ceiling. In a high-inflation year, the old rule let an owner push rent 8%. The new rule caps that at 4% — half the room, in exactly the years when an owner most wants it. The floor moving from 3% to 1% matters too: in a low-inflation year, the guaranteed increase is now smaller. The exact allowable percentage each year tracks the published CPI figure; the Live Legislation Tracker carries the current number.
Here is the part most owners missed. The rewrite rolled out in two phases, and the first one is already law:
| Component | Before | Since January 24, 2026 |
|---|---|---|
| Utility reimbursement bump | +1% allowed | Eliminated |
| Dependent occupant bump | +10% allowed | Eliminated |
If you were relying on the additional 1% for utilities or the 10% dependent-occupant adjustment, those are gone — and have been since January. July 1 is the second shoe. By the time it drops, owners who only read the headline will have spent five months thinking nothing had changed yet.
The new formula applies only to a building that meets all three of these tests:
Fail any one test and the RSO formula does not apply to you. Meet all three and it applies to every lease renewal after July 1. That is not a corner case: the overwhelming majority of multifamily in Koreatown, Hollywood, East Hollywood, Mid-City, Echo Park, Silver Lake, Highland Park, and large stretches of the San Fernando Valley is pre-1978 LA City. This is the core asset class.
Half of staying calm is knowing what the rewrite leaves alone:
Here is the part the legal explainers skip. Buyers do not wait for July 1 to reprice — they reprice the day the underwriting assumption changes, and that day was months ago.
A pre-1978 LA City building underwritten at 8% rent-growth headroom is worth more than the identical building underwritten at 4%, for the same NOI. Buyers who signed term sheets in Q1 2026 may have locked the old numbers. Buyers signing in Q3 and beyond are underwriting to the 4% cap — some asking for the discount out loud, others quietly trimming their offers. The sellers closing in Q2 2026 are closing on the old assumptions. The sellers closing in Q4 are closing on the new ones.
That is not a reason to panic-sell. It is a reason to know your number. The Sterman Transaction Index shows what pre-1978 product has actually traded for, per unit, across the submarkets where this rewrite bites hardest — real closings, not asking prices. If you are weighing a sale, the seller-timing breakdown walks through hold-versus-sell under the new formula, and the full explainer covers the valuation math in depth.
When does the new LA rent cap take effect?
The base formula change — 90% of CPI with a 4% ceiling and 1% floor — takes effect July 1, 2026. A separate piece of the same rewrite, eliminating the utility reimbursement and dependent occupant bumps, already took effect on January 24, 2026.
What is the new maximum rent increase under the LA RSO?
The ceiling drops from 8% to 4%. The actual allowable increase in a given year is 90% of CPI, bounded by a 1% floor and a 4% ceiling, so the precise figure tracks the published CPI number for the period.
Does the July 1, 2026 rent cap apply to my building?
Only if your building is inside the City of Los Angeles, has a certificate of occupancy dated before October 1, 1978, and has two or more units. Post-1995 buildings, unincorporated LA County buildings, and Santa Monica or West Hollywood buildings are not covered by this change.
Are post-1995 buildings affected?
No. Costa-Hawkins exempts buildings with a certificate of occupancy after 1995, and Proposition 33 — which would have changed that — failed in November 2024. Those buildings are not under the RSO cap.
Should I sell before July 1, 2026?
There is no single answer — it depends on your building, your hold horizon, and your cash-flow needs. What is true is that buyer underwriting has already shifted toward the 4% cap, so the pricing impact is being felt now rather than on July 1. A specific valuation on your building is the only way to know your real number.
Most sellers don't call me when the rule changes. They call me a year later, when a buyer's offer comes in lower than the comp they remember, and they want to know why. The why is on this page. The rent didn't change. The building didn't change. The rules around the building changed — and the market started pricing it in long before the date on the calendar.
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