Tuesday, June 17th

Session 4
10:30 - 12:00

Time Trend Analyses

Presented by Robert Gloudemans

Assessors can employ several methods to track price trends and fluctuations in order to determine appropriate time trend factors:  re-sales analysis, value-per-unit-analysis, sales ratio trend analysis, and inclusion of time variables in multiple regression models.  This session will describe and demonstrate these methods using actual market data from Wisconsin and other assessment jurisdictions.

Robert J. Gloudemans - Biographic Summary
Robert J. Gloudemans is a mass appraisal consultant from Phoenix, Arizona and partner in Almy, Gloudemans, Jacobs & Denne, a firm specializing in assessment policy and procedures.

Bob began work as a research associate for IAAO in 1973.  From 1978 to 1989 he worked for the Arizona Division of Property Valuation, initially as supervisor of the Computer Assisted Appraisal Unit and later as administrator of Research and Equalization.  In April, 1989 he began consulting full time and in 1991 formed his current partnership.

He has consulted for many states, provinces, local jurisdictions, and overseas governments in the area of revaluations and mass appraisal techniques.  A particular specialty is the provision of modeling training and assistance.  He has taught IAAO and other specialized  mass appraisal courses in over 35 states and provinces.  He has served as an expert witness to some 20 clients.

Bob has always been active in IAAO.  He served on the Assessment Standards Committee from 1981 to 1990 and is the primary author of many IAAO standards, including the 1990 Standard on Ratio Studies (1990).  He is a principal author and technical editor of the IAAO textbook, Property Appraisal and Assessment Administration ("red book") and author of the book, Mass Appraisal (IAAO, 2000). He has also written many articles and is currently a review editor for the IAAO Property Tax Journal.