Rent Increase Rules in Santa Clara County 2026: What Protects You Outside San Jose and Mountain View
If you rent in Sunnyvale, Santa Clara, Cupertino, Campbell, Milpitas, Los Gatos, Saratoga, Morgan Hill or Gilroy, there is no city rent board to call. San Jose and Mountain View both have real local rent control ordinances. Everywhere else in Santa Clara County, the limit on your rent increase comes from one state law, plus a few local rules that most renters have never heard of.
Here is exactly what applies to you in 2026, what your landlord can and cannot do, and what to check the day a rent increase notice shows up.
The number that matters: 8.6% in Santa Clara County
California's Tenant Protection Act (AB 1482) caps annual rent increases at 5% plus regional inflation, with a hard ceiling of 10%. The inflation figure resets every August.
For rent increases taking effect between August 1, 2026 and July 31, 2027, the maximum allowable increase in Santa Clara County is 8.6%. That is noticeably higher than the 6% to 7% range renters saw in the 2025 to 2026 period, so an increase that would have been illegal last year may be legal now.
The counties across the bay get a slightly different number. Alameda, Contra Costa, Marin, San Francisco and San Mateo sit at 8.8% for the same period, because AB 1482 uses the regional consumer price index for the metro area where your building sits.
A few practical points about how the cap works:
It is a cap on increases within a 12-month period, not per notice. Two increases of 5% each in the same year are not allowed just because each one is individually under the cap.
It applies to your current rent, not to market rent. If your unit is $800 below what the building is listing, your landlord still cannot jump you to market in one move.
When you move out voluntarily, the cap resets. The next tenant can be charged whatever the market will pay, which is why long-tenured renters in Santa Clara County are often hundreds of dollars below the listed rate in their own building.
First, check whether AB 1482 even covers your unit
This is the step most renters skip, and it is the one that decides everything. AB 1482 has real exemptions.
New construction. Buildings built within the last 15 years are exempt, on a rolling basis. A building that went up in 2011 becomes covered in 2026. This matters a lot in places like North San Jose, the Santa Clara Great America corridor and downtown Sunnyvale, where a large share of the apartment stock is newer mid-rise and podium construction. If you are in a 2018-vintage building with a leasing office and a package room, you are probably not covered by the cap at all.
Single-family homes and condos. These are exempt from both the rent cap and the just cause eviction rules, but only if two things are true: the owner is not a corporation, a real estate investment trust, or an LLC with a corporate member, and the lease contains the specific written exemption notice required by Civil Code section 1946.2. If that notice is not in your lease or an addendum, the exemption generally does not apply and you are covered. Go read your lease before you accept that you have no protection. Rented houses and townhomes are a big part of the market in Cupertino, Saratoga, Almaden and Evergreen, so this exemption comes up constantly.
Also exempt: owner-occupied duplexes, most single rooms where you share a bathroom or kitchen with the owner, dorms, and deed-restricted affordable housing (which has its own, usually stricter, rent rules). If you are in a standard apartment building more than 15 years old, you are almost certainly covered.
Notice requirements your landlord has to follow
Separate from the cap, California sets how much warning you get:
An increase of 10% or less requires 30 days written notice.
An increase of more than 10% requires 90 days written notice.
Since the Santa Clara County cap is 8.6%, a covered unit should never see an increase that needs the 90-day notice. If you get one, that is a strong signal that either your landlord believes your unit is exempt, or the increase is not lawful. Either way it is worth a question in writing.
You also cannot be hit with an increase mid-lease. A fixed-term lease locks your rent for the term. Increases apply at renewal or, if you are month to month, with proper notice.
City by city: what is actually different where you live
San Jose
San Jose has its own Apartment Rent Ordinance, which caps increases at 5% per year for covered buildings (generally multifamily built before September 1979) and adds local just cause eviction protections. If you rent in San Jose, the city ordinance is what governs, not the 8.6% state figure.
Mountain View
Mountain View has the Community Stabilization and Fair Rent Act, a voter-approved ordinance with its own annual allowable increase, a rent dispute process and relocation rules for covered units. Again, local law governs where it applies.
Sunnyvale
Sunnyvale has no rent cap of its own, so the 8.6% state number applies. But Sunnyvale does have a Tenant Protection Ordinance (municipal code chapter 19.71) that goes beyond state law on evictions. For a no-fault just cause eviction, such as an owner move-in or a substantial remodel, the landlord owes relocation assistance equal to two months of your rent at the rate in effect when the notice was issued, and must give you written notice of that assistance at least 30 days before issuing the termination notice. The city has been debating raising that to three months, with the housing commission supporting the increase and the planning commission recommending keeping it at two, so check the current figure with the city if you receive a notice.
Campbell
Campbell does not cap rent, but it runs a Rent Increase Dispute Resolution program administered through Project Sentinel. You can petition for mediation over a rent increase, a reduction in housing services, or a proposed eviction. The deadline is tight: a rent increase petition must be filed within 15 days of the effective date of the increase. Miss that window and the process is closed to you.
Los Gatos
Los Gatos has a Rental Dispute Mediation and Arbitration Ordinance that applies to properties with three or more rental units. A landlord who wants an annual increase above 5% has to justify it under pass-through formulas if tenants challenge it through the Dispute Resolution Program. While a case is pending you pay the prior rent plus 5%, and if the larger increase is upheld you owe the difference retroactively. In practice this makes 5% the soft ceiling in qualifying Los Gatos buildings.
Santa Clara, Cupertino, Milpitas, Saratoga, Morgan Hill, Gilroy
No local rent cap, no local rent board, no city process for challenging an increase. AB 1482 is your protection, which means 8.6% and the state just cause eviction rules, assuming your unit is covered.
Unincorporated areas
If your address is in unincorporated Santa Clara County rather than inside a city (parts of the Santa Cruz Mountains, San Martin, Stanford lands and pockets near Alviso and Burbank), the county has been advancing an ordinance to expand just cause eviction rules, raise relocation payments and add anti-retaliation enforcement. Confirm your jurisdiction before assuming city rules apply. Your mailing address can say San Jose while your parcel sits outside city limits.
What increases actually look like in 2026
The cap is a ceiling, not a forecast. Here is the market context as of 2026, which is what your landlord is actually pricing against:
Santa Clara: one bedrooms generally run about $3,400 to $3,700, with citywide averages across all unit sizes near $3,500.
Sunnyvale: one bedrooms around $3,300, with the all-size average closer to $3,650 and year-over-year growth running roughly 8%.
San Jose: one bedrooms around $3,050, all-size average near $3,330, up about 6% year over year.
Milpitas: one bedrooms around $2,950 to $3,000, all-size average near $3,250, up roughly 4%.
Two things follow. With market growth in the 4% to 8% range across much of the county, the 8.6% cap only binds in the hottest buildings, so most lawful increases land well below it. And if you have been in the same unit three or more years, your rent is likely under market, and your landlord knows the cap limits how fast they can close that gap. That gives you more leverage at renewal than renters usually assume, especially in Milpitas and north San Jose where new supply has kept pressure off.
What to do when the notice arrives
Calculate the percentage. Divide the increase by your current rent. Anything above 8.6% in a covered Santa Clara County unit is a problem worth raising.
Determine your building's age and ownership. Santa Clara County's property assessment records show year built. That one fact usually tells you whether the cap applies.
Read your lease for the exemption notice. For houses and condos, no notice usually means no exemption.
Check the 12-month total. Add up every increase in the past year, not just this one.
Respond in writing. Email beats a phone call. Ask your landlord to confirm which exemption they are relying on, if any. Many over-cap increases are errors from a property manager who used last year's number, and they get corrected quickly once questioned.
Use the local program if you have one. Campbell's 15-day petition deadline and the Los Gatos arbitration process both have real teeth, and both have deadlines you can miss by waiting.
Counter with comparables. If the increase is lawful but aggressive, pull current listings in your own building and within a half mile. A unit sitting empty for three weeks costs a landlord more than the increase they asked for.
If the increase is not worth absorbing, that is the moment to look at what else is available. A move from Sunnyvale to Milpitas or north San Jose can offset several years of increases while keeping your commute intact. Iris lets you search by commute time, budget and the specifics listing sites bury, so you can see your real options before the 30 days runs out.
This article is general information, not legal advice. For a specific dispute, contact your city's housing division or a local tenant counseling organization such as Project Sentinel.