Don H. Gaekle
Don H. Gaekle, Assessor

2018 Assessment Roll Preparation

The Assessor’s Office continues to prepare the 2018 regular assessment roll, which will be delivered to the Auditor-Controller in late June 2018. Roll values for the 2018 Roll will reflect all factors affecting property value as of 12:01 AM on January 1, 2018.

Property Statements

All Property Statements were due April 1, 2018, and are subject to penalty after May 7, 2018

All property statements must be received in the Assessors’ office by 5:00 PM on May 7, 2018, or must be postmarked on or before May 7th. Business/Agricultural property statements can also be filed online until 5:00 PM on May 7, 2018. On-line filing requires a BIN (Business Identification Number). BINs were sent to known accounts in January.

A ten percent (10%) late penalty assessment will apply to all late-filed and/or unfiled statements, in accordance with Revenue and Taxation Code Section 463

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

Exemption Claims for the 2018 Lien Date were due by February 15, 2018

Institutional exemption claims for the Welfare Exemption Claim, for qualifying non-profit agencies (including some church properties), the Church Exemption Claim and the Historic Aircraft Exemption Claim, must be filed annually. Claims filed after February 15, 2018 may still qualify for partial exemption.

As required by law, and as changes in ownership are processed in our office, the Assessor also mails Homeowner Exemption claim forms to all buyers of residential property. To qualify for a 2018 Homeowner Exemption, the home must have been owner occupied as of 12:01 AM January 1, 2018.

For more information, please see Exemptions under Assessments on our main webpage, or contact our Exemptions 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, 8:00 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, 8:00 am to 4:30 pm.