Your California renewal jumped. Work out which half moved before you change anything.

The Department of Insurance reported 28 homeowners rate filings under review in the first quarter of 2026 and 3 approved in the fourth quarter of 2025, with rate filings taking an average of 336 days to approve in the previous year, 323 days where no intervenor participated and 403 days where one did. Intervenor fees awarded in 2025 came to $1.47 million (CDI, Sustainable Insurance Strategy dashboard, updated February 2026). That timeline is why California increases arrive in steps. A filing sits for close to a year, then lands on every renewal in the program at once.

The renewal that moved, and the two very different reasons

The bill arrives, the number is meaningfully higher, and the first instinct is to call and ask what you did wrong. Usually the answer is nothing. The second instinct is to start cutting things off the policy until the number looks familiar again. That's the instinct to resist.

There are only two categories of cause, and you can usually tell them apart in twenty minutes with two declarations pages side by side. Either the company changed its rates for everyone in your program, which is a decision the Department of Insurance approved in advance, or something about your household, your property or your policy changed. Often it's both, and the proportion matters.

The general logic of responding well to an increase applies in every state, and we cover it on the statewide after a premium increase page. What's below is the California machinery: how the increase got approved, where to read the filing, and what California's own rating rules let a carrier do to your premium.

How a California rate increase gets approved before it reaches you

Proposition 103, passed in 1988, put California on a prior approval system. The Department describes it as a regulatory system where the Insurance Commissioner must approve a rate applied for by an insurer before its use, and lists the covered lines: personal automobile, dwelling fire, earthquake, homeowners, inland marine and umbrella on the personal side, plus a long list of commercial lines (CDI, Prop 103 Consumer Intervenor Process).

Insurance Code section 1861.05 is the operative statute. Subdivision (a): no rate shall be approved or remain in effect which is excessive, inadequate, unfairly discriminatory or otherwise in violation of the chapter; in considering that, no consideration shall be given to the degree of competition, and the Commissioner has to consider whether the rate mathematically reflects the insurance company's investment income. Subdivision (b): every insurer that wants to change a rate files a complete rate application, and the applicant has the burden of proving the requested change is justified. The company has to make the case. That is unusual, and it's why California rate decisions take as long as they do.

The mechanics, from the Department's own description of the review process (CDI, Rate Filing Review Process):

• Filings go in electronically through the NAIC's SERFF system.
• The intake unit has 14 days to decide whether the filing meets basic compliance.
• It then has 10 days to give public notice, which the Department issues every Friday.
• After public notice, the Rate Regulation Division has 60 days to approve the filing or issue a notice of hearing. If neither happens in that window, the filing is deemed approved.
• A public intervenor may request a hearing within 45 days after public notice.
• Under section 1861.05(c), where the proposed adjustment exceeds 7 percent of the then applicable rate for personal lines, or 15 percent for commercial lines, the Commissioner must hold a hearing upon a timely request. Below that, the Commissioner may decline a requested hearing but has to issue written findings supporting the decision.
• Section 1861.05(c) adds a backstop: a rate application is deemed approved 180 days after the Commissioner receives it, unless it has been disapproved by final order after a hearing or extraordinary circumstances exist.

The intervenor part is the piece most Californians have never heard of. Proposition 103 created a process for public participation in rate setting. Intervenors who make a substantial contribution to a rate decision can recover costs, expenses and reasonable attorney's fees from the insurer, and the Department notes those costs can under law be passed on to all consumers. Those representing the insurance industry or other entities are not entitled to compensation, and a would-be intervenor has to file a request for a finding of eligibility. That's the mechanism behind the 403-day average for intervened filings, and behind the $1.47 million awarded in 2025.

Look up the filing behind your own increase

You don't have to take anyone's word for what your carrier filed. California publishes it.

The rate filing search. The Department's Web Access to Rate and Form Filings system, WARFF, holds filings submitted in non-electronic format from 1998 forward and, since July 29, 2009, filings made through SERFF. The live search lets you filter by company name, NAIC number, line type and line code, including Homeowners Multi-Peril, Personal Auto, Earthquake and Fire, by type of filing, and by the percentage rate change requested with a greater-than or less-than operator, over a public notice date range (CDI, Insurance Company Rate Filing Search). Two limits the Department states: filings from before 1997 are not in the system, and advisory organization filings can only be viewed in person at the San Francisco or Los Angeles public viewing rooms.

The weekly and monthly lists. The Department posts a list of prior approval filings received during the previous week, and a monthly list of filings approved (CDI, Rate Filing Lists).

The hearing files. Where a filing went to a Prop 103 prior approval rate hearing, the Department's Virtual Viewing Room lets you find, view and download pleadings, exhibits, testimony, hearing transcripts, rulings, orders and final decisions (CDI, Virtual Viewing Room).

Telling a market increase apart from something in your own file

Put the expiring declarations page next to the renewal declarations page and read across, line by line. Not the total. The lines.

On the home policy, look at: the Coverage A dwelling limit, which many California carriers index upward annually for construction cost; whether extended or guaranteed replacement cost changed; the deductible, including any separate wildfire or brush deductible; whether ordinance or law coverage is still there and at what limit; the discount list, which is where a multi-policy or mitigation credit silently disappears; and the endorsement schedule.

On the auto policy, look at: the driver list, including anyone added or removed; the vehicle list and garaging address; annual mileage; liability limits and deductibles; and the discount list again, particularly the Good Driver line and any multi-policy credit that depends on a home policy you may have moved.

Then check the timing. California gives you two different notices at the end of a term. Under Insurance Code section 678(a)(1), at least 45 days before expiration the insurer sends either a notice of nonrenewal or an offer of renewal, and if it's a renewal offer it has to identify any reduction of limits or elimination of coverage, naming the specific limits or coverages. Take the 45 days as the renewal-offer deadline. Subdivision (c) overrides it for nonrenewals and requires 75 days, which we walk through on the California nonrenewal page. A price increase on its own doesn't trigger a percentage-based disclosure for residential policies. The 25 percent threshold people quote comes from section 678.1, which applies to commercial insurance, not homeowners.

One more California rule worth knowing on a brand new policy. The Department says the insurer has 60 days from the effective date to verify rating and underwriting and to notify you of an error and the resulting premium change. After 60 days no notice of change of premium is effective, and if the revision came from the company's error and you weren't notified within 60 days, the policy stays in force as written at the original premium (CDI, Residential Insurance: Homeowners and Renters, updated May 21, 2024).

What California's rating rules let a carrier do to your auto premium

California constrains auto rating harder than most states, and the constraints are useful to know when you're arguing about a renewal.

The three mandatory factors, in order. Insurance Code section 1861.02(a) says rates for an automobile policy shall be determined by applying, in decreasing order of importance, the insured's driving safety record, the number of miles driven annually, and years of driving experience, plus other factors the Commissioner adopts by regulation that have a substantial relationship to the risk of loss. Title 10 section 2632.5 restates those as the three mandatory factors and lists the optional ones an insurer may add, including type of vehicle, type of use, multi-vehicle households, academic standing, driver training, marital status, persistency, multi-policy and claims frequency and severity.

Credit is not on the list. Section 2632.5 is an exhaustive list, and credit-based insurance scoring is not among the permitted factors. The Department's own filing instructions say only those rating factors described in section 2632.5 may be used in the class plan, and any non-allowable rating factor must be removed from the rating plan (CDI, Class Plan Filing Instructions, February 10, 2020 edition).

The Good Driver discount is a statutory entitlement, not a courtesy. Under section 1861.02(b), every person meeting the section 1861.025 criteria is qualified to purchase a Good Driver Discount policy from the insurer of their choice, an insurer shall not refuse to offer and sell one, and the rate has to be at least 20 percent below the rate the insured would otherwise have been charged for the same coverage. Read the criteria carefully, because the common version is wrong: licensed to drive for the previous three years, no more than one violation point count in the previous three years, and not principally at fault in an accident that resulted in bodily injury or death. One point does not cost you the discount. Two things people miss: a principally at fault accident that damaged only property does not disqualify you outright but does add a violation point, and section 1861.025(c) carries a separate ten year lookback on serious drunk driving convictions. The 20 percent is measured against that same insurer's own non-good-driver rate, so it doesn't mean that carrier is cheapest.

A gap in coverage can't be used against you the way you'd expect. Section 1861.02(c) says the absence of prior automobile insurance coverage, in and of itself, shall not be a criterion for determining eligibility for a Good Driver Discount policy, or generally for automobile rates, premiums, or insurability.

Fault has a threshold. The Department states that if an accident is not your fault your insurance company does not charge you more, and that if you are at least 51 percent at fault your premium can go up at renewal as a surcharge (CDI, Automobile Insurance). If a surcharge appeared after an accident you didn't cause, that's a specific thing to challenge rather than a vague grievance.

California's minimum liability limits are $30,000 for injury or death to one person, $60,000 for injury or death to more than one person, and $15,000 for property damage (California DMV, Insurance Requirements). Minimums are a floor, not a plan, and the full picture sits on our California auto insurance page.

The two 2024 regulations behind a lot of California home increases

If your home renewal moved sharply, there's a reasonable chance the filing behind it used one or both of these.

Catastrophe modeling in ratemaking. In December 2024 the Department posted a final regulation, after the Office of Administrative Law filed it with the Secretary of State, permitting insurers to use forward-looking catastrophe models in California rate calculations instead of pricing catastrophe exposure off historical losses alone, and setting up a public review process for those models. The Department announced enforcement on December 13, 2024, and began accepting public requests to review model information on January 2, 2025 (CDI, December 13, 2024). Before that, California was the state that did not allow forward-looking wildfire models in rates.

Net cost of reinsurance in ratemaking. On December 30, 2024 the Department announced a regulation treating reinsurance like other insurer expenses allowed under Proposition 103, establishing an industry-wide standard cost of reinsurance and capping the amount that can be charged to consumers, with companies spending above the industry standard unable to pass the excess on, and limiting the costs to California-only exposures (CDI, December 30, 2024). The Department has published the text of the regulation and the final statement of reasons, and it now posts insurer commitment forms that go with it. What it has not published is an effective date, and a rulemaking under the same name still shows on the Department's currently proposed regulations list, so we are not going to state one.

What insurers give in exchange. Both regulations are tied to a writing commitment. Under 10 CCR section 2644.4.8, an insurer commits in writing to achieve, within 730 days of its rate approval, a distressed-area exposure count no less than its statewide market share multiplied by 0.85 and by total statewide distressed-area earned exposures, or alternatively to increase its distressed-area exposures by 5 percent. An insurer already meeting the standard commits to maintaining it for at least three years. Distressed areas are 662 ZIP codes plus a list of counties, updated annually, resting on lists published in March 2025 (CDI, Sustainable Insurance Strategy, updated February 2026).

Two things not to take from that. It is not a promise that any particular home becomes insurable, and it is not a sign that the market has recovered. It's a trade: the Department allowed insurers to price wildfire risk with forward-looking tools, and required them to write more of it.

The expensive ways people respond

Cutting the dwelling limit to hit a number. The dwelling limit should reflect what it costs to rebuild at today's California construction prices. Lowering it doesn't lower the cost of rebuilding, it just moves the shortfall onto you. Same logic for dropping extended replacement cost.

Dropping ordinance or law coverage. That's the coverage paying the extra cost of rebuilding to current code rather than the code in force when the house went up. Drop it on a 1970s California house in a jurisdiction that has since adopted wildland urban interface building standards and you have quietly agreed to fund the difference yourself.

Raising the deductible past what you could actually pay. A deductible is a decision about your savings account, not about your premium. And on a California home policy, check whether a separate percentage wildfire or brush deductible applies, because that number is often much larger than the flat deductible people remember.

Dropping to state minimum liability limits on the auto policy. The cheapest way to convert a premium problem into a personal financial catastrophe.

Switching to a FAIR Plan setup to save money. A California FAIR Plan policy is a named peril policy with no liability, no water damage and no theft coverage, and the Plan does not sell the companion policy that covers them. If you're comparing it against a standard homeowners proposal, compare the total of both policies and the coverage, not the FAIR Plan half. That's the whole job of the California FAIR Plan alternatives page.

Letting a policy lapse while shopping. Never. Nothing gets cancelled until the replacement is bound in writing with an effective date.

What drives eligibility and price in California

No premium figures here. We publish numbers we have quoted ourselves, and we do not have a California book deep enough to publish from yet. An industry average with a California label on it would tell you nothing about your renewal. What we can tell you is what moves the number.

On the home side: the approved rate filing for your program and when it took effect; wildfire exposure at the address and the carrier's own wildfire risk model, which we take apart on the California wildfire page; rebuild cost at current construction prices; roof age and material; documented defensible space and home hardening; claims in the last five years; occupancy; the condition of plumbing, wiring and heating; and the deductible structure.

On the auto side: driving safety record, annual mileage and years of driving experience, in that statutory order; who else in the household drives; the vehicles and where they're garaged overnight; the limits and deductibles you choose; continuous coverage; and the optional factors your carrier has filed and applied.

On both: discounts that are actually on the policy versus discounts you assume are. A multi-policy credit that fell off when you moved one policy is one of the most common causes of an increase that looks inexplicable.

When we have real quoted California figures of our own to publish, they'll go in this section. Until then, ask for numbers on your own household rather than trusting a range you read somewhere.

When re-shopping is worth it, and when it is not

And the honest case against moving: if your current carrier is writing coverage on your California home that other carriers won't offer at all, price is the wrong thing to optimize. Staying put is a valid answer when it's made on facts.

How Vantage Point Risk runs a California rate increase review

We start with both declarations pages, not with a quote. We read across every line, list what changed, and separate the approved rate movement from anything specific to your household. Where the increase looks larger than the filing, we go after that difference before we go after the market.

Then we check the discounts that should be on the policy and are not, and we confirm the coverage is still right before we compare price. Only then do we quote it, and we show you what every carrier came back with, including the ones that declined.

Sometimes the recommendation is to stay. We'll tell you that plainly rather than moving a policy to justify the exercise. We don't promise savings, placement or eligibility. Payment is either pay in full or financed, depending on what the carrier offers on that policy. Coverage is subject to policy terms, underwriting and availability.

What to ask, and what to send

Send these and we can tell you which half of the increase moved:

• The expiring declarations page and the renewal declarations page, all pages of each
• The renewal offer or billing notice, with its date
• Any surcharge, discount change or coverage change notice you received
• Any wildfire risk score or classification sent with the renewal
• Claims in the last five years on any policy, with dates and amounts paid
• Household changes since last renewal: drivers, vehicles, garaging address, occupancy
• Roof age and material, and any mitigation work with dates
• Every other policy you hold, so we can see the multi-policy picture

And these are worth asking any agent or carrier, us included:

• What rate filing does my increase come from, and when was it approved?
• How much of my increase is the approved rate change, and how much is my own file?
• Which discounts were on last year's policy and are not on this one, and why?
• Did the dwelling limit change, and what rebuild figure is it based on?
• Is there a separate wildfire or brush deductible, and is it a percentage?
• On the auto side, am I receiving the Good Driver rate, and if not, which criterion am I missing?
• If I switch, what coverage am I giving up to get the lower number?

Richard Sweet, owner of Vantage Point Risk and an independent insurance advisor. Last reviewed August 5, 2026. How we review this.