GISCAMA2018 has ended
Join us for comprehensive education, networking, and professional development. URISA and the IAAO partner together each year to provide a conference that assists assessment and appraisal professionals in visualizing how they can work more effectively through the use of technology.  Join us March 19/22, 2018  for the 22nd annual conference in Houston, Texas

Creating an attendee profile within Sched DOES NOT REGISTER you for the conference or specific workshops. You must register for the conference here.  Note that the number of attendees noted at the bottom of each workshop, event or session are simply those attendees that have created a personal schedule. It does NOT indicate the number of people who are actually registered. 
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Thursday, March 22 • 8:30am - 10:00am
Defining Depreciation and Equitable Value

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Two Houston appraisers present solutions for valuing and reviewing property. They will discuss appraisal equity and development of effective age adjustments. 

Session Moderator: Alex Hepp, Cyclomedia

  • Comparision of Sold and Unsold Commercial Properties Using Mann Whitney Test
    Liz Hernandez, Analyst, Harris County Appraisal District, Houston, TX

  • Developing Effective Age Models
    Errol Williams, PhD, Residential Valuation Analyst, Harris County Appraisal District, Houston, TX

avatar for Alex Hepp

Alex Hepp

Director, Assessment, CycloMedia Technology Inc.


Liz Hernandez

Analyst, Harris County Appraisal District
I graduated from Economics from National University of Colombia. I graduated from Texas A&M and I have an MBA. I have worked for Residential, Commercial, and Appraisal Operation. I have 10 years of experience in the Appraisal field. I was real estate Agent in Bogota, Colombia. I... Read More →

Errol Williams, Ph.D.

Valuation Specialist, Harris County Appraisal District
Errol Williams is a Residential Valuation Specialist with the Harris County Appraisal District (HCAD) in Houston, Texas. HCAD has more than 1.8 million parcels with an estimated market value of $556 billion distributed across approximately 500 taxing units. With more than 18 years... Read More →

Thursday March 22, 2018 8:30am - 10:00am CDT
Sandalwood, 4th Floor