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The Admin Building is undergoing remodeling. The main entrance will be closed. Please enter through the North door for all business.


Our Team

Brian Tiesman
County Assessor
Ryan Knight
Chief Deputy
Lynn Seitz
Office Manager
Becky Viernow
Assistant Office Manager
Alicia Tyler
Appraiser II
Brandon Holst
Appraiser I


The primary function of the Clinton County Assessor is to locate, list, and value all real property subject to taxation in his/her respective jurisdiction.

Locate the physical location of the property.  This is accomplished by utilizing a legal description and a plat map.  Relative location of one property with its immediate neighbors can be readily determined through inspection of the plat map.

Listing of the individual properties entails measurements, attributes of all types as well as observation of several type of depreciation - physical, functional or economic.  A compilation of these factors is assembled on an individual property card which is always available for public inspection.

Valuing is the final step in the taxation process.  Utilizing all the factors previously discussed, they are then individually computed using State supplied manuals, adjusted to conform to local conditions.  The sum total is then given one final test - "Does this value seem reasonable?".  If so, it then becomes the taxable value for purposes of real property tax.

Any question concerning assessed or taxable value as well as legal description should be addressed to the Assessor.

Where do your property tax dollars go?

2019 Agricultural Rollback

Administration Building

1900 N. 3rd St.
Clinton, IA 52733
Driving Directions

Mailing Address

P.O. Box 2957
Clinton, IA 52733

Contact Information



Monday - Friday
8:00 a.m. - 4:30 p.m.
Holiday Closures

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