Rate Breakdown

Property taxes in Humboldt County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Humboldt County

In Humboldt County, property taxes are based on the assessed value of real and personal property as determined by the County Assessor’s Office. Each year, the assessor reviews sales data, improvements, and market trends to establish an “Assessed Value” that is generally 100 % of the property's market value as of the lien date (January 1). This assessed value is then multiplied by the combined local tax rate, expressed in mills (one mill equals $1 of tax per $1,000 of assessed value).

The baseline rate for the county is set by California Proposition 13, which limits the general tax rate to 1 % of assessed value plus any voter‑approved indebtedness (school, city, special districts). In 2024, Humboldt County’s average combined rate is approximately 1.125 % (112.5 mills), though individual parcels may vary depending on their location within city limits, overlay districts, or special assessments.

Available Exemptions

California law provides several exemptions that can reduce the assessed value before the tax rate is applied. Eligible homeowners in Humboldt County may claim one or more of the following:

• Homeowner’s (Homestead) Exemption – Reduces the assessed value of a primary residence by $7,000, lowering the tax bill modestly.
• Senior Citizen Exemption – Available to owners aged 62 or older who meet income limits; grants a $7,000 reduction on the primary residence.
• Disability Exemption – Persons with a qualifying disability (e.g., blindness, paralysis) can receive the same $7,000 reduction.
• Veteran Exemption – Qualifying disabled veterans receive a $7,000 reduction; a basic veteran exemption (no disability required) may also be available in some counties, though Humboldt currently follows the disabled‑veteran rule.

To claim an exemption, file the appropriate claim form with the Humboldt County Assessor‑Recorder’s Office by the February 15 filing deadline for the tax year in which you seek relief. These exemptions are applied automatically for subsequent years as long as eligibility continues.

Payment Schedule & Deadlines

Property taxes in Humboldt County are due in two installments:

• First installment – November 1 (due) – October 10 (late penalty begins). This payment covers the first half of the tax year.
• Second installment – February 1 (due) – January 10 (late penalty begins). This payment covers the remaining balance.

If you fail to pay by the due dates, a 10 % penalty and 0.5 % monthly interest accrue on the delinquent amount. Continued non‑payment may lead to a tax lien, which can result in the County placing a tax‑sale notice on the property. To avoid penalties, many taxpayers set up automatic electronic funds transfers (EFT) or use the County’s online payment portal.

Appealing Your Assessment

If you believe your property’s assessed value is inaccurate, you have the right to appeal to the Humboldt County Assessment Appeals Board (AAB). The process includes:

• File a written protest with the Assessor’s Office by July 2 of the tax year (or the deadline specified on your notice).
• Attend a mandatory informal hearing before a local AAB member. You may present evidence such as recent sales of comparable properties, an independent appraisal, or documentation of physical defects.
• If the informal hearing does not resolve the issue, you can request a formal hearing before the full Board, which will issue a written decision.
• Should you remain dissatisfied, you may appeal the Board’s decision to the California State Board of Equalization within 60 days.

Throughout the appeals process, keep copies of all correspondence, photographs, and appraisal reports. Engaging a qualified property tax consultant or attorney can improve the likelihood of a successful outcome.