Don H. Gaekle
Don H. Gaekle, Assessor

Message from the Assessor

As the current elected Assessor of Stanislaus County it is my sworn responsibility to uphold the State’s Property Tax Laws. This site is an ongoing part of my commitment to keeping you informed of your rights and responsibilities as property owners in Stanislaus County.
As our economy continues to recover and market values increase, more of you will see your property values stabilize as the assessments are returned to their Proposition 13 values. Under Proposition 13 assessed value increases are limited to a maximum of 2% a year. However, if your assessment is currently reduced to reflect a market value that is less than your Proposition 13 value, then your assessment may be subject to annual increases that exceed this 2% limit. For more information, click on the following link: "About Value Increases."

Thank you,
Don H. Gaekle

About Us

Who We Are

The Assessor is primarily responsible for preparing an annual assessment roll upon which property tax revenues are generated. The County, Public Schools, Cities, Redevelopment Agencies, and Special Districts all rely on this revenue for funding operations.

What We Do

All property, excluding supplies, movable equipment, boats, and aircraft, are assessed based upon their market value when purchased or newly constructed. The Assessor determines the market value for the ownership changes and new construction. The supplies, movable equipment, boats, and aircraft are assessed based upon their annual market value on January 1 of each year. The Assessor also maintains property parcel maps. These maps are available to the public in the Assessor’s Office or at the County’s web site ( The property tax assessment roll, property ownership information, and some property characteristics are also available to the public at the Assessor’s Office.

What We Offer

The mission of the Stanislaus County Assessor's office is to produce a fair, accurate and timely assessment roll while providing excellent customer service.
Fee-based annual data subscriptions are also available. See "Assessor Services" for more information.
The Assessor's Office is open Monday-Friday, 8:30 am to 4:30 pm.