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Don H. Gaekle
Don H. Gaekle, Assessor

2017 Flooding

Our office has coordinated with the Stanislaus County Office of Emergency Services to identify properties with potential damage from recent flooding and will contact owners of the properties identified so far. We will mail these disaster relief claims by March 31st. Properties with documented damage of $10,000 in current market value, or greater, may qualify for reduction in the assessed value of the portion damaged or destroyed and a refunding of associated taxes. Property owners may file a claim up to 12 months after the event causing damage.

For more information please visit Disaster Relief under our Tax Relief section on this main page or contact our office at the number provided on this webpage.
Note: Filing a claim does not remove the applicant’s obligation to pay taxes timely, as billed. However, those submitting qualifying claims have until April 10, 2017 to file a request for postponement of the April 10th installment of secured taxes. For more information please see Revenue & Taxation Code section 194.1.

The annual exemption claim filing date was February 15, 2017.

The Welfare Exemption Claim, for qualifying non-profit organizations, the Church Exemption Claim and the Historic Aircraft Exemption Claim, must be filed annually by February 15th in order to qualify for the full exemption allowed. However, qualifying properties are still eligible for partial exemption if late claims are filed before December 31, 2017.

The Homeowner Exemption Claim is a one-time filing, as provided by law. As changes in ownership are processed in our office, we mail Homeowner Exemption Claim forms to all buyers of residential property at the address shown on the transfer deed. To qualify for a 2017 Homeowner Exemption, the home must have been owner occupied as of 12:01 AM January 1, 2017.

For more information, please see Exemptions under the Assessment menu on our main webpage, or contact our Exemptions Division.

All Property Statements are due April 3, 2017, and subject to penalty after May 8, 2017

Annual Property statement filing requests were mailed to taxpayers at the end of January. All Business owners and existing Agricultural property online filers received an instruction/request letter providing them with a BIN (Business Identification Number) necessary to access our online filing system. Agricultural Property owners who did not previously file online received a paper statement and instructions for online filing, if they should choose to take advantage of this improved service. Owners of apartment complexes, boats and aircraft will only receive a paper statement.

For more information access Personal Property under the Assessment menu on our main webpage, or contact our Business Property division.

As the elected Assessor of Stanislaus County it is my sworn responsibility to uphold the State's Property Tax Laws. Our website is an ongoing part of my commitment to keeping you informed of your rights and responsibilities as property owners in Stanislaus County. To contact our office directly please call (209) 525-6461, 8:30 AM to 4:30 PM, Monday through Friday.

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.