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Pre-Decisional Collaboration

ORPTS strives to work closely with assessors and counties on systematic analysis projects. In a process known as pre-decisional collaboration, these parties work together in analyzing market data to establish the LOA and measures of valuation uniformity. Pre-decisional collaboration can take place at three different levels.

  • Lowest level: ORPTS performs the necessary analysis, shares and explains the results, and seeks agreement on appropriate actions, which can range from simply establishing the LOA to contracting for a full reappraisal.
  • Middle ground: All parties share data and participate in diagnostic analyses. They reach a joint decision on the prescriptive phase of the analysis. This level requires the full input and participation of the assessor and assumes a higher skill level.
  • Highest level: The assessor, perhaps with the assistance of the county RPTS, performs the diagnostic analyses and reaches a tentative decision concerning follow-up actions. ORPTS confirms the process and accepts the results. This represents the ideal state with the local governments able to conduct independent analyses, interpret results, and determine required actions.

The Pre-Decisional Collaboration (PDC) Process:

ORPTS Full Value Measurement Procedures and Guidelines:

Using Systematic Analysis to Determine Level of Assessment and Maintain Uniformity:

In addition, the International Association of Assessing Officers (IAAO) has numerous publications, courses, and workshops for assessors that address all aspects of the assessment process. They are available for purchase. The following publications are particularly relevant:

  • Assessment Practices: Self-Evaluation Guide (2003)
  • Mass Appraisal of Real Property (2000)
  • Standard on Mass Appraisal of Real Property (2002)
  • Standard on Ratio Studies (1999, under revision)
Updated: May 04, 2015