John Zimmerman

John Zimmerman is the Founder and President of ValueWest, Inc.  He has been in the ad valorem assessment business since 1986 when he graduated from the University of Colorado, Boulder with a Political Science, Public Service Bachelors Degree.  After working on the Colorado Property Assessment Study for several years John joined Thos. Y. Pickett & Company (TYP) as a key part of the Colorado Property Assessment Study.  Eventually becoming the project lead and Denver Office Manager for TYP.   After ten years with TYP, John ventured out on his own by forming ValueWest, Inc.  One of the first assignments in the new business was assisting in the purchase price allocation of the largest gold mine acquistion in the world at that time.  Normandy Mining was purchased by Newmont Mining Corporation and the deal was finalized in February 2002.   ValueWest has since contracted with many Colorado Assessor’s in providing services such as Commercial Reappraisals, Residential Reappraisals, a variety of analytical services and has developed a public access web site solution for assessor data.



Judith Kahl

Judith Kahl is a Certified General Appraiser with 33 years of experience in the property tax arena.  She worked eight years as the Chief Deputy Assessor in Logan County Colorado and 22 years as a Property Tax Specialist with the Colorado Division of Property Taxation.  She has been an appraiser and analyst with ValueWest, Inc. since January 2009.  Judy has supervised numerous state ordered reappraisals and has had a major role in authoring many parts of Colorado’s Assessor’s Reference Manual as well as several DPT classes.  She has testified before the Colorado State Board of Equalization many times and enjoys a stellar reputation with many Assessor’s and staff persons throughout Colorado.  In addition to extensive commercial revaluation responsibilities Judy leads our Agricultural Land ad valorem valuation unit.