The 2% rule is not a cap on the whole bill
A current Bakersfield homeowner question asks how an annual property-tax bill could rise about 7.9% when Proposition 13 is often described as limiting increases to 2%. The short answer is that the two percentages measure different things. California's State Board of Equalization says Proposition 13 generally limits annual growth in a property's factored base-year value to the lower of inflation or 2%, unless another reassessment rule applies.
The base property-tax rate is generally 1% of taxable value, plus rates needed for voter-approved bonded debt. A total bill can also contain charges that are not calculated from assessed value, so a bill-level increase can exceed the annual change in the assessed value. The reported 7.9% cannot be verified or explained without comparing that parcel's two itemized bills.
Bakersfield sewer charges are one concrete reason to compare line items
The City of Bakersfield says sewer charges are billed annually on the property-tax bill. Its current sewer page lists a $475 flat fee for a single-family home for fiscal year 2026-27. The city also says only users of its wastewater system pay the fee, so the charge does not apply uniformly to every Kern County parcel.
California's Board of Equalization distinguishes these kinds of charges from value-based property taxes. Annual bills may include special assessments, special taxes, direct levies, delinquent utility billings, weed-abatement charges and Mello-Roos charges. Because those items are not controlled by the assessed-value calculation, one changed line can push the total bill up by more than 2%.
A change of ownership, construction or Proposition 8 status can also matter
Kern County says a change of ownership or completed new construction can produce a supplemental assessment and one or more supplemental bills. A supplemental bill is separate from the regular annual bill and is based on the difference between the old and new assessed values for the applicable portion of the year.
Another exception involves property that previously received a temporary Proposition 8 decline-in-value reduction. The state says that assessed value can rise by more than 2% as market value recovers, although—without a change in ownership or new construction—it cannot exceed the property's factored Proposition 13 base-year value.
How to find the actual cause on your bill
Compare the old and new bills line by line: assessed land and improvement values, exemption amount, tax-rate area, voter-approved debt rates, sewer, solid waste, special districts and every direct assessment. Kern County says valuation questions go to the Assessor-Recorder at 661-868-3485, while tax-rate calculation questions go to the Auditor-Controller-County Clerk at 661-868-3599. Payment questions belong to the Treasurer-Tax Collector.
If the dispute is about assessed value, Kern County advises contacting the Assessor first. The regular-roll assessment-appeal period runs through November 30, 2026; a supplemental assessment generally has a 60-day appeal deadline measured from its notice. An appeal does not automatically suspend the payment deadline, so verify the bill's due date while the review is pending.
Sources and further reading
Kern County Treasurer-Tax Collector: secured-property bill explanation ↗
Kern County Treasurer-Tax Collector: supplemental assessments ↗
California BOE: Proposition 13 and decline-in-value rules ↗
California BOE: direct levies and special assessments ↗
California BOE: property-tax bill contacts ↗
City of Bakersfield: sewer billing ↗
City of Bakersfield: 2026-27 sewer-rate information ↗
Kern County: assessment appeals ↗
Public Bakersfield question that prompted this guide ↗