GIS/ValTech 2027: Full Schedule

7:30am PST

Registration Hours

Monday February 22, 2027 7:30am - 5:00pm PST

GHW 3rd Floor Hallway

Monday February 22, 2027 7:30am - 5:00pm PST
GHW 3rd Floor Hallway

Registration

8:00am PST

Bridging the G.A.P: Multigenerational Perspectives Inside and Outside the Assessment Office (Half-Day Workshop)

Monday February 22, 2027 8:00am - 12:00pm PST

Dogwood, 3rd Floor

Bridging the G.A.P. (Generations Across the Professions): Multigenerational Perspectives Inside and Outside the Assessment Office (Half-Day Workshop)Monday, February 22, 2027 - 8:00 AM - 12:00 NoonInstructors: Jennifer Rearich, MAS, CAE, RES, CPM, Business Analytics & CAMA Supervisor, Maricopa County (Arizona) Assessor’s OfficeNathan Langdon, GIS Mapping & Property Ownership Manager,...
See More →

Speakers

Jennifer Rearich, MAS, CAE, RES, CPM

Business Analytics & CAMA Supervisor, Maricopa County Assessor's Office

Jennifer Rearich, MAS, RES is the Business Analytics & CAMA Supervisor at the Maricopa County Assessor’s Office in Phoenix, AZ. She has presented at multiple IAAO Conferences and received the 2019 IAAO Emerging Professional Award. She currently serves on the 2023 IAAO Residential... Read More →

Nathan Langdon

GIS Mapping & Property Ownership Manager, Maricopa County

Nathan Langdon serves as the GIS Mapping and Property Ownership Manager at the Maricopa County Assessor’s Office. Nathan has been in public service for nearly ten years, specializing in the GIS field. He graduated from the University of Arizona with a Bachelor’s Degree in Geography... Read More →

Monday February 22, 2027 8:00am - 12:00pm PST
Dogwood, 3rd Floor

Leadership & Workforce Development

8:00am PST

Cool Vibes, Cold Numbers: Learn AI Coding for Sharper Stratification (Half-Day Workshop)

Monday February 22, 2027 8:00am - 12:00pm PST

Azalea – 2nd Floor

Cool Vibes, Cold Numbers: Learn AI Coding for Sharper Stratification (Half-Day Workshop)Monday, February 22, 2027 - 8:00 AM - 12:00 NoonInstructors: Jonathan Beck, AAS, Assessor, Beckham County, Oklahoma Jake Parkinson, Recovering Assessor, Tyler Technologies, UtahAssessors are being told that artificial intelligence will change their work. Almost nobody is teaching them to drive it. This...
See More →

Speakers

Jonathan Beck, AAS

Assessor, Beckham County Assessor's Office

Jonathan Beck, AAS, serves as the elected Assessor of Beckham County, Oklahoma, a position he has held since 2019. He oversees the full scope of assessment operations, including annual revaluation, quadrennial inspection cycles, sales ratio studies, and compliance with the constitutional... Read More →

Jake Parkinson

Recovering Assessor, Tyler Technologies

Monday February 22, 2027 8:00am - 12:00pm PST
Azalea – 2nd Floor

Strategy Governance and Operations

8:00am PST

Assessment and Valuation GIS Toolbox for Nerds (Full-Day Workshop)

Monday February 22, 2027 8:00am - 5:00pm PST

Willow, 3rd Floor

Assessment and Valuation GIS Toolbox for Nerds (Full-Day Workshop)Monday, February 22, 2027 - 8:00 AM - 5:00 PMInstructors: Lauren Voelker, Sr. Solution Engineer, Esri Dan Fasteen, Ph.D., Senior Research Scientist, Tyler TechnologiesThis hands-on workshop explores the modern geospatial toolkit for property valuation and assessment. We’ll explore how spatial analytics can enhance assessment...
See More →

Speakers

Lauren Voelker

Senior Solution Engineer, National Government, Esri

Lauren Voelker is a Senior Solution Engineer on Esri's Land Records and Local Government teams. She works with city and county governments throughout the US to help them develop and deploy GIS solutions. Prior, she worked in county government supporting a wide array of industries... Read More →

Dan Fasteen, Ph.D

Senior Research Scientist, Tyler Technologies

Daniel Fasteen, Ph.D. is a Senior Research Scientist with Tyler Technologies. Since 2010, Daniel has worked various roles in both the private and local government sector as a CAMA manager, product manager, research scientist, and consultant focusing on GIS application, property... Read More →

Monday February 22, 2027 8:00am - 5:00pm PST
Willow, 3rd Floor

Data Technology and Analytics

8:00am PST

Leveraging ArcGIS Pro to Manage Parcels (Full-Day Workshop)

Monday February 22, 2027 8:00am - 5:00pm PST

Holly, 3rd Floor

Leveraging ArcGIS Pro to Manage Parcels (Full-Day Workshop)Monday, February 22, 2027 - 8:00 AM - 5:00 PMInstructor: Jason Camerano, Principal Product Engineer, EsriIn this hands-on workshop, attendees will learn about managing parcels in ArcGIS Pro, utilizing the Parcel Fabric data model, and how to extend it for their data migration. Once data is migrated, the focus will shift to...
See More →

Speakers

Jason Camerano

Product Engineer, Esri

Jason Camerano is a Principal Product Engineer and has been on the Parcels team since 2008 when he started as an intern. He has a passion for the parcels community and enjoys presenting the software to all users. Presenting and teaching at conferences is important to him because he... Read More →

Monday February 22, 2027 8:00am - 5:00pm PST
Holly, 3rd Floor

Data Technology and Analytics

10:00am PST

Coffee Break for Workshop Participants

Monday February 22, 2027 10:00am - 10:30am PST

GHW 3rd Floor Hallway

Take a short break to recharge with coffee and light refreshments while connecting and continuing conversations with fellow workshop participants.

Monday February 22, 2027 10:00am - 10:30am PST
GHW 3rd Floor Hallway

Break

12:00pm PST

Lunch on your own

Monday February 22, 2027 12:00pm - 1:00pm PST

Lunch on your own

1:00pm PST

AI: The Good, The Bad, and The Ugly (Half-Day Afternoon Workshop)

Monday February 22, 2027 1:00pm - 5:00pm PST

Azalea – 2nd Floor

AI: The Good, The Bad, and The Ugly (Half-Day Afternoon Workshop)Monday, February 22, 2027 - 1:00 - 5:00 PMInstructors: Ryan Janzen, CAE, Equitable Solutions, LLCLance Leis, Appraiser, Washington CountyCounty offices are facing a new reality: artificial intelligence is already changing how we work, how we communicate, and how information is presented. This workshop will highlight the...
See More →

Speakers

Ryan Janzen, CAE

Appraiser, Equitable Solutions, LLC

Ryan has been in the appraisal industry for over 15 years. He has earned his Registered Mass Appraiser (RMA) designation from the State of Kansas as well as the Certified Assessment Evaluator (CAE) designation from the International Association of Assessing Officers (IAAO). In... Read More →

Lance Leis

Appraiser, Washington County

Monday February 22, 2027 1:00pm - 5:00pm PST
Azalea – 2nd Floor

Data Technology and Analytics

1:00pm PST

Anatomy of a Case (Half-Day Afternoon Workshop)

Monday February 22, 2027 1:00pm - 5:00pm PST

Dogwood, 3rd Floor

Anatomy of a Case (Half-Day Afternoon Workshop)Monday, February 22, 2027 - 1:00 - 5:00 PMInstructors: Megan Lukens, Assessment Business Systems Manager, City of Madison, Wisconsin Michelle Drea, Esq., Assessor, City of Madison, WisconsinWe will dive into each component of assessment appeals, starting with an understanding of legal procedure, then diving into preparation and considerations for...
See More →

Speakers

Megan Lukens

Assessment Business Systems Manager, City of Madison

I fell into the assessing world with Tyler Technologies back in 2002. I have had opportunities to work at the jurisdictional level, the county level, and for an oversight agency at the state level. I currently work for the City of Madison, WI as the Assessment Business Systems Manager... Read More →

Michelle Drea

Assessor, City of Madison

Michelle is the Assessor for the City of Madison, WI. She is also an attorney. She came into the assessment profession at the State regulatory level and transitioned to her current role in 2018. Her knowledge and experience is invaluable with appeals and litigation. More to come... Read More →

Monday February 22, 2027 1:00pm - 5:00pm PST
Dogwood, 3rd Floor

Strategy Governance and Operations

3:00pm PST

Coffee Break for Workshop Participants

Monday February 22, 2027 3:00pm - 3:30pm PST

GHW 3rd Floor Hallway

Take a short break to recharge with coffee and light refreshments while connecting and continuing conversations with fellow workshop participants.

Monday February 22, 2027 3:00pm - 3:30pm PST
GHW 3rd Floor Hallway

Break

5:15pm PST

Attendee Welcome Meeting

Monday February 22, 2027 5:15pm - 6:00pm PST

Holly, 3rd Floor

Join us for this informal gathering to connect with fellow attendees, put faces to names, and get an inside look at what’s ahead for the conference. It’s the perfect way to kick off your conference experience, meet new colleagues, and start making connections right from the beginning!

Monday February 22, 2027 5:15pm - 6:00pm PST
Holly, 3rd Floor

Meeting

6:00pm PST

Optional Murder Mystery Dinner or Open Evening

Monday February 22, 2027 6:00pm - 8:30pm PST

TBD

Monday February 22, 2027 6:00pm - 8:30pm PST
TBD

Networking

7:30am PST

Registration Hours

Tuesday February 23, 2027 7:30am - 5:00pm PST

GHW 3rd Floor Hallway

Tuesday February 23, 2027 7:30am - 5:00pm PST
GHW 3rd Floor Hallway

Registration

8:30am PST

Welcome & Opening Keynote Address

Tuesday February 23, 2027 8:30am - 10:00am PST

Archibald, 3rd Floor

Tuesday February 23, 2027 8:30am - 10:00am PST
Archibald, 3rd Floor

Keynote Address

10:30am PST

It’s What’s on the Outside That Counts: Picturing Quality and Condition

Tuesday February 23, 2027 10:30am - 12:00pm PST

Daisy, 2nd Floor

This session follows one thread: parcel imagery, from the ground up. We start with the practical side; camera setup, metadata, and how to build and manage Oriented Imagery Datasets in ArcGIS Pro, so you've got usable photos to work with. Then we get to the interesting part: what to do with them. Quality and condition are two of the trickiest fields in CAMA data. Quality is locked in at...
See More →

Moderators

Jonathan Beck, AAS

Assessor, Beckham County Assessor's Office

Speakers

Zachary Knepp

Machine Learning Engineer, Thimgan & Associates

Zach holds a master's degree in Data Science and Analytics at the University of Oklahoma, Zach has strong passion for applying machine learning algorithms to increase efficiency and drive innovation. Zach has presented at national conferences and published multiple papers on topics... Read More →

Tyler Kling

Director of Mapping, Callaway County Assessor's Office

I graduated in 2020 with my Bachelor of Science in Physics-Astronomy and briefly worked as a substitute teacher for the Blue Springs School District before working at Tyler Technologies as an Appraisal Lister. During my time at Tyler Technologies, I learned how update parcel data... Read More →

Tuesday February 23, 2027 10:30am - 12:00pm PST
Daisy, 2nd Floor

Data Technology and Analytics

10:30am PST

Technology Showcase

Tuesday February 23, 2027 10:30am - 12:00pm PST

Azalea, 2nd Floor

Tuesday February 23, 2027 10:30am - 12:00pm PST
Azalea, 2nd Floor

Showcase

10:30am PST

Building a Complete GIS Department

Tuesday February 23, 2027 10:30am - 12:00pm PST

Holly, 3rd Floor

This session includes the steps necessary to build a GIS department from the ground up, including clever funding that allows for transparency and taxpayer savings.

Donna Prince, DLP, ABD, Assessor, Clarendon County, SC
Alan Lee, Emergency Services Director, Clarendon County, SC

Keywords: Process Improvement & Operations, GIS & Spatial Analysis, Beginner

Moderators

Nathan Langdon

GIS Mapping & Property Ownership Manager, Maricopa County

Speakers

Donna Prince

Assessor, Clarendon County

Alan Lee

Emergency Services Director, Clarendon County EMS

Tenured Emergency Services Director dedicated to finding funding for Clarendon counties GIS department. 20 years serving the public sector in the capacity of emergency services, fire, and rescue.

Tuesday February 23, 2027 10:30am - 12:00pm PST
Holly, 3rd Floor

Strategy Governance and Operations

10:30am PST

Your Ratio Study Has Trust Issues

Tuesday February 23, 2027 10:30am - 12:00pm PST

Willow, 3rd Floor

This session challenges how we think about certainty in ratio studies, exploring why point estimates and traditional confidence intervals may not tell the whole story about assessment performance. Participants will learn how improved approaches, including Bayesian methods, can better account for uncertainty and lead to clearer, more defensible valuation decisions.Paul Bidanset, Founder & Executive...
See More →

Moderators

Danny Hagen

Assessor, Skagit County

As Skagit County Assessor, Danny Hagen brings a technology-forward approach to public service, using data, systems, and collaborative problem-solving to drive fairer, more transparent government.

Danny serves as President of the Washington State Association of County Assessors (WSACA) and 2nd Vice President of the Washington Association of County Officials (WACO) Board of Trustees, where he works to foster collaboration and innovation across Washington's county governments... Read More →

Speakers

Paul Bidanset

Researcher, Center for Appraisal Research and Technology

Paul Bidanset is an international AVM consultant and founder of the Center for Appraisal Research and Technology (CART), a nonprofit dedicated to promoting appraisal equity through free research, workflows, and technology. He has most recently worked with the governments of Moldova... Read More →

Peadar Davis, PhD, MRICS

Senior Lecturer, Ulster University

Luc Hermans

Chief Global Officer/Data Scientist, Netherlands Council for Real Estate Assessment

Luc is the Chief Global Officer for the Netherlands Council for Real Estate Assessment, in this role he is involved in international projects and collaborations. Next to that Luc is a PhD-candidate at Ulster University.

Tuesday February 23, 2027 10:30am - 12:00pm PST
Willow, 3rd Floor

Valuation & Assessment Science

12:00pm PST

Conference Hosted Lunch & Partner Quick Hits

Tuesday February 23, 2027 12:00pm - 1:00pm PST

Archibald, 3rd Floor

Enjoy a hosted buffet luncheon and time to connect with fellow conference attendees. Dessert will be served in the exhibit hall, which will open following lunch.Exhibitors are invited to deliver a brief, engaging elevator pitch (1–2 minutes) during the lunch program to encourage attendees to visit their booth. This fast-paced session provides an opportunity to present in front of the full...
See More →

Tuesday February 23, 2027 12:00pm - 1:00pm PST
Archibald, 3rd Floor

Hosted Meal

1:00pm PST

Dessert with Exhibitors

Tuesday February 23, 2027 1:00pm - 2:00pm PST

Cochran & Addition, 3rd Floor

Tuesday February 23, 2027 1:00pm - 2:00pm PST
Cochran & Addition, 3rd Floor

Break

2:00pm PST

50 Names for Square Feet: Drafting a Common Standard

Tuesday February 23, 2027 2:00pm - 3:30pm PST

Daisy, 2nd Floor

Living area is LIV_AREA in one system, SFLA in another, GrossLivArea in a third. Same house, three names — and before any model runs or any record moves, somebody rebuilds that crosswalk by hand. The profession has standards for data quality and standards for AVMs, but no standard for what the data is called, so every jurisdiction pays for the same mapping work over and over. This session will...
See More →

Moderators

Lauren Voelker

Senior Solution Engineer, National Government, Esri

Speakers

Paul Bidanset

Researcher, Center for Appraisal Research and Technology

Dan Fasteen, Ph.D

Senior Research Scientist, Tyler Technologies

Luc Hermans

Chief Global Officer/Data Scientist, Netherlands Council for Real Estate Assessment

Edie McCarthy, FIAAO

Town Assessor, Town of Greenburgh

Jake Parkinson

Recovering Assessor, Tyler Technologies

Rebecca Malmquist, CAE, FIAAO, SAMA

City Assessor, City of Minneapolis

Rebecca Malmquist, CAE, SAMA, is the City Assessor for the City of Minneapolis. She has worked for the City of Minneapolis since July 2014. Prior to joining Minneapolis, Rebecca was with the City of Minnetonka for 17 years, serving as the City Assessor for five years.

She has serv... Read More →

John Valente

Northeast Regional Manager/Senior Data Research Scientist, Tyler Technologies

Joe Wehrli

Enterprise Architecture Manager, Tyler Technologies

Joseph Wehrli (Joe) is an enterprise architect and computer scientist at Tyler Technologies, where he conducts research and development in property valuation and tax administration systems.

Joe has contributed to a wide range of property valuation and tax administration products and projects, including collaborations with New York City, Washington DC, the City of Boston, Hennepin County (MN), Sedgwick County (KS), and international agencies such as the British Columbia... Read More →

Tuesday February 23, 2027 2:00pm - 3:30pm PST
Daisy, 2nd Floor

Data Technology and Analytics

2:00pm PST

Technology Showcase

Tuesday February 23, 2027 2:00pm - 3:30pm PST

Azalea, 2nd Floor

Tuesday February 23, 2027 2:00pm - 3:30pm PST
Azalea, 2nd Floor

Showcase

2:00pm PST

Doing More with Less: Transforming Assessment Operations Through Automation and AI

Tuesday February 23, 2027 2:00pm - 3:30pm PST

Holly, 3rd Floor

As assessment and GIS offices face shrinking workforces, rising workloads, and increasing demands for timely, defensible results, modernization is no longer optional. This session explores practical approaches to improving workflows through lessons from private-sector appraisal practice and emerging generative AI tools. Attendees will see how centralized data, workload dashboards, standardized...
See More →

Moderators

Dan Cypert, RES, AAS

Chief of Staff, Washington County Assessor’s Office

Speakers

Randy Cook

Director of Strategic Growth, Government, Valcre

Randy Cook is an executive growth leader and strategic advisor with nearly 25 years of experience spanning real estate, government, valuation technology, and enterprise solutions. During his 24-year career with CoreLogic, now Cotality, he helped drive more than half a billion dollars... Read More →

Timothy Boncoskey

Chief of Staff, County of San Diego

Jonathan Beck, AAS

Assessor, Beckham County Assessor's Office

Tuesday February 23, 2027 2:00pm - 3:30pm PST
Holly, 3rd Floor

Strategy Governance and Operations

2:00pm PST

It’s Complicated: Condos, Commerce & Assessment Equity

Tuesday February 23, 2027 2:00pm - 3:30pm PST

Willow, 3rd Floor

This session explores two often-overlooked challenges to assessment equity: capturing the unique building and unit characteristics that drive condominium values and accurately valuing high-end non-residential properties where data and traditional methods can fall short. Through real-world examples, presenters will show how better data, classifications, and valuation approaches can uncover hidden...
See More →

Speakers

Kevin Keene

Owner/Operator, Keene Mass Appraisal Consulting

Kevin Keene served the City of Philadelphia for over 30 years as a Real Property Evaluator; Mass Appraisal Analyst; Real Property Supervisor; GIS Manager; Modeling Director and Director of Mass Appraisal and Analysis. He personally designed and directed over sixteen major revaluation... Read More →

Jimmy Williams

Supervisor of Mass Appraisal, Philadelphia Office of Property Assessment

Jimmy is the Mass Appraisal Supervisor with the Philadelphia Office of Property Assessment (OPA) . He has been with OPA for over 25 years and has held several positions that include Clerical, Residential Assessor, Analyst and now Mass Appraisal Supervisor. His Education includes a... Read More →

Alex Raju

Supervisor of Analytics, Philadelphia Office of Property Assessment

Works with the City of Philadelphia - Office Of Property Assessment. From training, to data analytics, to data sciengineer, to modeling, to residential evaluation; he keeps seven of his fingers in various roles. Two he keeps reserved for new roles. One is left at home just in case... Read More →

Anthony Ruocchio

Real Property Evaluator, Office of Property Assessment, City of Philadelphia

Anthony maintains a commercial portfolio of Office and Hotel buildings as well as parking garages. He has worked at the Philadelphia Office of Property Assessment since 2014 and has been involved in some of the commercial revaluation projects. As a member of IAAO, Anthony is a CAE... Read More →

Tuesday February 23, 2027 2:00pm - 3:30pm PST
Willow, 3rd Floor

Valuation & Assessment Science

3:30pm PST

Coffee Break with Exhibitors

Tuesday February 23, 2027 3:30pm - 4:00pm PST

Cochran & Addition, 3rd Floor

Recharge with coffee and light refreshments while networking with fellow attendees and connecting with exhibitors. It’s the perfect opportunity to continue conversations, explore new solutions, and discover what’s new in the GIS community.

Tuesday February 23, 2027 3:30pm - 4:00pm PST
Cochran & Addition, 3rd Floor

Break

4:00pm PST

CAD to CAMA, Completely and Quickly: Linework and Annotation Sourced from CAD

Tuesday February 23, 2027 4:00pm - 5:00pm PST

Daisy, 2nd Floor

We at county jurisdictions strive for survey-accurate data on our tax maps and within our CAMA systems. Utilizing survey CAD files has been a mainstay in Ad Valorem mapping, drastically reducing drawing time. Copying and tracing CAD-provided parcel lines is a widely used technique. We are taking it a step further and reducing production time significantly by converting CAD provided annotation into...
See More →

Moderators

Maureen Sterrenberg

Deputy Assessor, City of Bloomington Township

Speakers

Preston Ellison

GIS Analyst III, Mobile County Revenue Commission

Preston has been in the GIS department with Mobile County for 17 years. He is a state certified mapper and is currently working toward his CMS designation. Preston supervises a team of approximately seven employees and continues to play a key role in advancing the county’s GIS capabilities... Read More →

Kit Cecil

GIS Analyst II, Mobile County Revenue Commission

Kit Cecil is a GIS Analyst II for the Mobile County Revenue Commission. He served as the Alabama Chapter of IAAO President in 2024-2025 and is Mapping instructor for both the State of Alabama and IAAO.

Tuesday February 23, 2027 4:00pm - 5:00pm PST
Daisy, 2nd Floor

Data Technology and Analytics

4:00pm PST

Technology Doesn't Resist Change. People Do

Tuesday February 23, 2027 4:00pm - 5:00pm PST

Holly, 3rd Floor

This session will be a fireside chat on leadership, communication, and technology adoption in the modern Assessor’s Office. Technology modernization projects are often evaluated by how successful they are at meeting implementation timelines, budgets, and system functionality, which are frequently measured through various metrics. Yet the long-term success of these projects is frequently...
See More →

Moderators

Rob McGee

Deputy Director, Arkansas Assessment Coordination Division

Speakers

Yara Banks, MBA

CEO/Founder, BNX Business Advisors

Yara Banks is the Founder and CEO of BNX Business Advisors, author, and international speaker specializing in leadership, organizational communication, and public trust during periods of organizational change. Drawing on her experience as a former Fair Housing Investigator and Director... Read More →

Jennifer Rearich, MAS, CAE, RES, CPM

Business Analytics & CAMA Supervisor, Maricopa County Assessor's Office

Tuesday February 23, 2027 4:00pm - 5:00pm PST
Holly, 3rd Floor

Leadership & Workforce Development

4:00pm PST

Technology Showcase

Tuesday February 23, 2027 4:00pm - 5:00pm PST

Azalea, 2nd Floor

Tuesday February 23, 2027 4:00pm - 5:00pm PST
Azalea, 2nd Floor

Showcase

4:00pm PST

Putting the “Where” in Machine Learning

Tuesday February 23, 2027 4:00pm - 5:00pm PST

Willow, 3rd Floor

Geographically weighted gradient boosting brings location into machine learning by allowing relationships to vary across space rather than assuming the same model applies everywhere. This advanced session explores how the approach works, why spatial variation matters in mass appraisal, and what real-world case studies can teach us about building and interpreting locally responsive valuation...
See More →

Moderators

Thomas Swingle

Deputy Assessor, Adams County

Speakers

Luke Jorgensen

Mass Valuation Machine Learning Specialist, Thimgan & Associates

Tuesday February 23, 2027 4:00pm - 5:00pm PST
Willow, 3rd Floor

Valuation & Assessment Science

5:00pm PST

Networking Reception with Exhibitors

Tuesday February 23, 2027 5:00pm - 6:30pm PST

Cochran & Addition, 3rd Floor

Join us in the exhibit hall for the Networking Reception with Exhibitors at GIS/ValTech 2027!

Connect with fellow attendees, chat with exhibitors, and explore the latest geospatial tools, technologies, and solutions all in a relaxed, informal setting. Grab a refreshment, enjoy the conversation, and make some new connections along the way!

Tuesday February 23, 2027 5:00pm - 6:30pm PST
Cochran & Addition, 3rd Floor

Networking

7:30am PST

Registration Hours

Wednesday February 24, 2027 7:30am - 5:00pm PST

GHW 3rd Floor Hallway

Wednesday February 24, 2027 7:30am - 5:00pm PST
GHW 3rd Floor Hallway

Registration

8:00am PST

Continental Breakfast with Exhibitors

Wednesday February 24, 2027 8:00am - 9:00am PST

Cochran & Addition, 3rd Floor

Start your morning with breakfast in the exhibit hall and take the opportunity to connect with exhibitors, explore new technologies, and discuss solutions that can support your GIS needs.

Wednesday February 24, 2027 8:00am - 9:00am PST
Cochran & Addition, 3rd Floor

Hosted Meal

9:00am PST

The Treasure Hunt: Using LangGraph and Hugging Face to Accelerate Mass Appraisal

Wednesday February 24, 2027 9:00am - 10:00am PST

Daisy, 2nd Floor

Most of us have interacted with Large Language Models (LLMs) like ChatGPT or Gemini through standard browser chat windows. However, this simple approach often leads to concerns about data privacy, security, and ongoing subscription costs. Furthermore, many of us have experienced model "hallucinations" or generic outputs that do not align with our specific appraisal processes, making AI results...
See More →

Moderators

Leah Thimgan

Operations Director, Thimgan & Associates

Speakers

Joshua Jorgensen

Machine Learning Engineer, Thimgan & Associates

Joshua Jorgensen is an innovative Data Science professional with 14 years of experience, 8 of those years being in Mass Appraisal. Having a foundation in Applied Mathematics and Statistics, he specializes in Machine Learning and Big Data. Joshua has proven excellence in building machine... Read More →

Wednesday February 24, 2027 9:00am - 10:00am PST
Daisy, 2nd Floor

Data Technology and Analytics

9:00am PST

Continuous Improvement in An Assessor’s Office: A Maricopa County Case Study

Wednesday February 24, 2027 9:00am - 10:00am PST

Holly, 3rd Floor

This session follows a real-world continuous improvement project completed at the Maricopa County Assessor’s Office through the discovery and solution development phases for future improvements to the annual process of summarizing and reporting total values for approximately 2,500 taxing districts. Attendees will learn how a variety of continuous improvement tools and techniques were used to...
See More →

Speakers

Matt Stellino, BS, PMP

Senior Data Scientist, Maricopa County Assessor’s Office

Matt Stellino, PMP, is a Senior Data Scientist in Maricopa County with three years working on valuation models and improvements to the Abstracts and Tax Roll process. Before joining the Assessor’s Office, his career focused on engineering and project management, where he developed... Read More →

Wednesday February 24, 2027 9:00am - 10:00am PST
Holly, 3rd Floor

Strategy Governance and Operations

9:00am PST

Low Country, High Standards

Wednesday February 24, 2027 9:00am - 10:00am PST

Willow, 3rd Floor

The Netherlands is giving vertical equity analysis a modern makeover, moving from outdated tools to new metrics, international standards, and cutting-edge research. This session explores how Dutch assessors are incorporating IAAO standards, new equity measures, and practical online tools to better understand, monitor, and address vertical inequity.Luc Hermans, Global Chief Officer/Data Scientist,...
See More →

Speakers

Luc Hermans

Chief Global Officer/Data Scientist, Netherlands Council for Real Estate Assessment

Gijs Deen

Data Analyst, Netherlands Council for Real Estate Assessment

Gijs is a Data Analyst at the Netherlands Council for Real Estate Assessment

Wednesday February 24, 2027 9:00am - 10:00am PST
Willow, 3rd Floor

Valuation & Assessment Science

10:00am PST

Coffee Break with Exhibitors

Wednesday February 24, 2027 10:00am - 10:30am PST

Cochran & Addition, 3rd Floor

Wednesday February 24, 2027 10:00am - 10:30am PST
Cochran & Addition, 3rd Floor

Break

10:30am PST

The Map Knows Something

Wednesday February 24, 2027 10:30am - 12:00pm PST

Daisy, 2nd Floor

Maricopa County built a spatial tool in ArcGIS Experience Builder for comparing parcel characteristics and attribute data on an interactive map. Including properties, neighborhoods, subdivisions, parcel class, improvement areas, and more. With a huge parcel count, it enables parcel-level review and catches data inconsistencies through custom queries and filters. We'll cover how it works, how it...
See More →

Moderators

Janet Jennings-Doyle, RPA, CCA, RTA, CTA

Director of Internal Audit and Compliance, Travis Central Appraisal District

Speakers

Sarah Sharp

GIS Specialist, Maricopa County Assessor's Office

Sarah is a GIS Specialist at Maricopa County with three years of experience in the geospatial field. She began her GIS journey as a land use planner for a private company in Washington state, where she used GIS to support assessments and inform decision-making. Her diverse background... Read More →

Brent Ardeneaux RES, AAS

Residential Sales Modeler/Sales Verification Supervisor, Orleans Parish Assessor’s Office

David Barnett, MAI, SRA

CEO, GAR Associates LLC/PROS

Russel Almaraz RES, AAS

Residential Modeler, Orleans Parish Assessor’s Office

Russell Almaraz serves as a Residential Modeler with the Orleans Parish Assessor’s Office, where he specializes in the analysis of residential real estate markets and the development of valuation models used in the property assessment process.

Wednesday February 24, 2027 10:30am - 12:00pm PST
Daisy, 2nd Floor

Data Technology and Analytics

10:30am PST

The Grassroots Playbook: Creating and Growing a Peer-Run Education Group

Wednesday February 24, 2027 10:30am - 12:00pm PST

Holly, 3rd Floor

The best broad education in our field already exists. What is often missing is the hyper-local layer: your state's statutes, your CAMA system, your corner of the profession. In 2023, we set out to fill that local gap for our own community and built a peer-run conference from scratch. This session tells the story of how a peer-run education conference grew from an idea between two people into a...
See More →

Moderators

Alex Hepp

Director, Assessment, Cyclomedia Technology

Speakers

Falon Hoven

Chief Deputy Assessor, Whatcom County Assessor's Office

Falon Hoven is the Chief Deputy Assessor for Whatcom County, Washington, where she oversees property valuation, levy certification, and taxpayer programs in one of the state's most complex assessment jurisdictions. Her career began in a small rural county, giving Falon a comprehensive... Read More →

Wednesday February 24, 2027 10:30am - 12:00pm PST
Holly, 3rd Floor

Leadership & Workforce Development

10:30am PST

Technology Showcase

Wednesday February 24, 2027 10:30am - 12:00pm PST

Azalea, 2nd Floor

Wednesday February 24, 2027 10:30am - 12:00pm PST
Azalea, 2nd Floor

Showcase

10:30am PST

Prediction Is Easy. Explain Yourself

Wednesday February 24, 2027 10:30am - 12:00pm PST

Willow, 3rd Floor

Machine learning can do more than predict values. It can help us understand why properties behave similarly, identify meaningful comparables and adjustments, and reveal how markets organize themselves across space. This session moves from opening the machine learning black box to drawing data-driven neighborhood boundaries, showing how explainable AI, information theory, and even techniques...
See More →

Speakers

John Kossa

Data Scientist, Lee County Property Appraiser

John Kossa is a data scientist for Lee County Property Appraisers in Fort Meyers Florida. He previously worked as a senior software engineer for property valuation startup Valuebase and the satellite internet company Viasat. His main interests are solving deep technical puzzles and... Read More →

Joe Wehrli

Enterprise Architecture Manager, Tyler Technologies

Wednesday February 24, 2027 10:30am - 12:00pm PST
Willow, 3rd Floor

Valuation & Assessment Science

12:00pm PST

Lunch & Learn

Wednesday February 24, 2027 12:00pm - 1:30pm PST

Violet

Wednesday February 24, 2027 12:00pm - 1:30pm PST
Violet

Lunch & Learn

12:00pm PST

Lunch & Learn

Wednesday February 24, 2027 12:00pm - 1:30pm PST

TBA

Wednesday February 24, 2027 12:00pm - 1:30pm PST
TBA

Lunch & Learn

1:30pm PST

Refreshment Break and Exhibitor Raffles

Wednesday February 24, 2027 1:30pm - 2:30pm PST

Cochran & Addition, 3rd Floor

The exhibition will close following this hour-long break. Use these final 60 minutes to gather the specifications and information you need to make informed solutions decisions for your organization—and don’t miss your name being called during the raffle prize drawings!

Wednesday February 24, 2027 1:30pm - 2:30pm PST
Cochran & Addition, 3rd Floor

Break

2:30pm PST

Uneven Ground: Land Value Growth, Assessment Uniformity, and Tax Burdens in Chicagoland

Wednesday February 24, 2027 2:30pm - 3:30pm PST

Daisy, 2nd Floor

This presentation examines the core assessment issues of uniformity, valuation, and taxpayer impact through an interactive mapping case study spanning ten years and 1.8 million parcels in Cook County, the second-largest assessment jurisdiction in the United States. The scale of the data presents significant analytical challenges, including outliers, classification complexities, and changing...
See More →

Speakers

Andrea Raila

Senior Tax Analyst, Raila & Associates

I have presented regularly at professional conferences and in educational settings since 1990, and my firm education property owners routinely at public, no-obligation tax talks about real estate assessments and appeals. The goal is to educate and guide general audience and intermediate... Read More →

Wednesday February 24, 2027 2:30pm - 3:30pm PST
Daisy, 2nd Floor

Data Technology and Analytics

2:30pm PST

No Elephants: Leading with Clear, Open, and Professional Communication

Wednesday February 24, 2027 2:30pm - 3:30pm PST

Holly, 3rd Floor

Hard Conversations Happen! Are you prepared to navigate difficult situations gracefully and generate positive outcomes? From exchanging simple feedback to facilitating passionate debate, this session explores the profound impact we have on one another and how to cultivate a culture of clear, open, and professional communication. Learn to address challenging workplace topics head-on while...
See More →

Speakers

Phillip Leveille

GIS / Special Districts Supervisor, Maricopa County Assessor's Office

Phillip Leveille serves as the GIS Specialist Supervisor at the Maricopa County Assessor’s Office. A seasoned leader with management experience across sectors and disciplines ranging from healthcare to real estate, Phillip’s diverse background uniquely prepared him to lead a team... Read More →

Wednesday February 24, 2027 2:30pm - 3:30pm PST
Holly, 3rd Floor

Leadership & Workforce Development

2:30pm PST

Defend This! Machine Learning Under the Microscope

Wednesday February 24, 2027 2:30pm - 3:30pm PST

Willow, 3rd Floor

Machine learning may produce great valuations, but can you explain and defend them when someone challenges the result? This session puts ML on the witness stand, exploring how models perform against IAAO ratio study standards, how complex predictions can be translated into explanations taxpayers and appeals boards can understand, and how assessors can build the documentation needed to make machine...
See More →

Speakers

Will Jarvis

Founder/CEO, Valuebase

Will Jarvis is the Founder and CEO of Valuebase, with extensive experience in product management, data science, and business development. Since founding Valuebase in 2023, Will has raised over $8 million in venture capital to support the development of AI-powered property. His leadership... Read More →

Wednesday February 24, 2027 2:30pm - 3:30pm PST
Willow, 3rd Floor

Valuation & Assessment Science

4:00pm PST

Plenary Session

Wednesday February 24, 2027 4:00pm - 5:00pm PST

Archibald, 3rd Floor

Wednesday February 24, 2027 4:00pm - 5:00pm PST
Archibald, 3rd Floor

Keynote Address

6:00pm PST

Conference Social

Wednesday February 24, 2027 6:00pm - 8:00pm PST

Offsite

Wednesday February 24, 2027 6:00pm - 8:00pm PST
Offsite

Networking

8:00am PST

Conference Committee Breakfast Meeting & Debrief

Thursday February 25, 2027 8:00am - 9:00am PST

Dogwood, 3rd Floor

Join the Conference Committee for breakfast and a debrief to reflect on the conference, share feedback and observations, and discuss highlights, lessons learned, and opportunities for future events.

Thursday February 25, 2027 8:00am - 9:00am PST
Dogwood, 3rd Floor

Meeting

8:30am PST

Registration Hours

Thursday February 25, 2027 8:30am - 12:00pm PST

GHW 3rd Floor Hallway

Thursday February 25, 2027 8:30am - 12:00pm PST
GHW 3rd Floor Hallway

Registration

9:00am PST

Size Doesn’t Matter: How Two Assessors’ Offices Built It Themselves

Thursday February 25, 2027 9:00am - 10:30am PST

Daisy, 2nd Floor

Skagit County, WA: a non-developer built and shipped a free suite of browser-based tools — sales ratio analysis, exemption screening used across all 39 counties, a levy trends visualizer — each a single HTML file, no backend, no procurement. AI-assisted development got it built; discipline is what made it trustworthy — validated against certified output, root-caused on real data, defensible...
See More →

Speakers

Danny Hagen

Assessor, Skagit County

Autumn Mittemiller

Data Scientist, Maricopa County Assessor’s Office

Autumn Mittemiller has worked for the Maricopa County Assessors Office for 5 years as a data scientist within the CAMA unit. During her time with the county, she has become known for her innovative mindset and creating diverse tools using open sourced software for her team.

Leroy Johnson, AAS

Data Scientist, Maricopa County

Leroy joined the Maricopa County Assessor’s Office in 2013 as an appraiser, then joined the CAMA team in 2020 as a Regression Modeler now a Data Scientist. Leroy is a member of the IAAO and earned his A.A.S designation. Working with CAMA Leroy has developed skills in SPSS, Python... Read More →

Thursday February 25, 2027 9:00am - 10:30am PST
Daisy, 2nd Floor

Data Technology and Analytics

9:00am PST

When Disaster Strikes: Keeping the Assessor’s Office Ready

Thursday February 25, 2027 9:00am - 10:30am PST

Holly, 3rd Floor

This presentation provides a comprehensive, practical framework for strengthening disaster preparedness and ensuring continuity of operations within assessor offices. Drawn from real disaster experiences, it guides participants through both immediate post-incident response actions and essential pre-disaster planning measures that safeguard staff, facilities, digital systems, and core assessment...
See More →

Moderators

Falon Hoven

Chief Deputy Assessor, Whatcom County Assessor's Office

Speakers

Janet Jennings-Doyle, RPA, CCA, RTA, CTA

Director of Internal Audit and Compliance, Travis Central Appraisal District

Susan Powell-Chehadi

Chief Deputy Assessor, Boulder County Assessor’s Office

Thursday February 25, 2027 9:00am - 10:30am PST
Holly, 3rd Floor

Strategy Governance and Operations

9:00am PST

AI on the Roll: From Research to Reality

Thursday February 25, 2027 9:00am - 10:30am PST

Willow, 3rd Floor

AI is moving quickly from research papers and experimental models into the everyday work of assessment offices. This session explores what the research tells us about AI and machine learning in property valuation, then looks at how emerging tools help assessors automate workflows, uncover insights, improve valuations, and make better decisions while keeping human judgment, transparency, and public...
See More →

Speakers

Andrew Harrison

Account Executive, Schneider Geospatial

Dan Fasteen, Ph.D

Senior Research Scientist, Tyler Technologies

Thursday February 25, 2027 9:00am - 10:30am PST
Willow, 3rd Floor

Valuation & Assessment Science

9:00am PST

Setting the Standard: What’s New at IAAO

Thursday February 25, 2027 9:00am - 10:30am PST

Azalea, 2nd Floor

IAAO Cadastral & Ratio Study Standard Update

Ratio Study Standard Update
Members of the IAAO Research & Standards Committee

Cadastral Mapping Standard Update
Nathan Langdon, GIS Mapping/Property Ownership Manager, Maricopa County Assessor’s Office - AZ
Lauren Voelker, Sr. Solution Engineer, Esri - MO
Alex Hepp, Director, Assessment, Cyclomedia Technology - NJ

Speakers

Valuation & Assessment Science

10:30am PST

Coffee Break in the Foyer

Thursday February 25, 2027 10:30am - 11:00am PST

Archibald, 3rd Floor

Thursday February 25, 2027 10:30am - 11:00am PST
Archibald, 3rd Floor

Break

11:00am PST

Keynote & Closing Remarks

Thursday February 25, 2027 11:00am - 12:00pm PST

Archibald, 3rd Floor

Speakers

Brent Jones

Cadastre/Land Records, Esri

Thursday February 25, 2027 11:00am - 12:00pm PST
Archibald, 3rd Floor

Keynote Address

7:30am PST

8:00am PST

8:00am PST

8:00am PST

8:00am PST

10:00am PST

12:00pm PST

1:00pm PST

1:00pm PST

3:00pm PST

5:15pm PST

6:00pm PST

7:30am PST

8:30am PST

10:30am PST

10:30am PST

10:30am PST

10:30am PST

12:00pm PST

1:00pm PST

2:00pm PST

2:00pm PST

2:00pm PST

2:00pm PST

3:30pm PST

4:00pm PST

4:00pm PST

4:00pm PST

4:00pm PST

5:00pm PST

7:30am PST

8:00am PST

9:00am PST

9:00am PST

9:00am PST

10:00am PST

10:30am PST

10:30am PST

10:30am PST

10:30am PST

12:00pm PST

12:00pm PST

1:30pm PST

2:30pm PST

2:30pm PST

2:30pm PST

4:00pm PST

6:00pm PST

8:00am PST

8:30am PST

9:00am PST

9:00am PST

9:00am PST

9:00am PST

10:30am PST

11:00am PST

Get help with the event