Powell Banz Valuation - Jonathan B. Banz, MAI

Jonathan B. Banz, MAI, AI-GRS


Jonathan B. Banz, MAI, AI-GRS is a Principal of the firm and Certified General Appraiser. Jon appraises a large variety of property types, both locally and regionally. He focuses on industrial properties, including single and multi-tenant, light, heavy, and flex.

Jon has lived in the Pacific Northwest from an early age. He attended Linfield College in McMinnville, Oregon where he completed a bachelor’s of science degree and met his wife Katie. He began his appraisal career in 2002 with Powell Valuation Inc. Jon received his MAI from the Appraisal Institute in December of 2012 after completing the required course work, comprehensive exam and traditional demonstration report.

In January 2014, Jon and his wife/business partner, Katherine Powell Banz, MAI (Katie), purchased the business. Both are Principals in the newly formed firm of Powell Banz Valuation, LLC, and look to continue the family business tradition, which has spanned the past 45 years.

In his spare time Jon enjoys spending time with his wife Katie and their Great Danes, working on the continual renovation of the couple’s 1910 farm house located in Salem’s Fairmount neighborhood and listening to as much new (and old) music as time allows.

EmailQualificationsOR LicenseWA License


Designated Member of the Appraisal Institute (#481000)

State of Oregon Certified General Appraiser (#C000896)

State of Washington Certified General Appraiser (#1101855)

State of Oregon Supervising Appraiser

Greater Oregon Chapter of the Appraisal Institute

  • 2018 Region 1 Representative
  • 2015 Public Relations Committee Chairman

Member, Historic Deepwood Estate

Member, Salem Art Association



  • Review Theory – General
  • Drone Technology and its impact on the Appraisal Industry
  • Litigation Appraising: Specialized Topics and Applications
  • Business Practices and Ethics
  • Office Building Valuation – A Contemporary Perspective
  • Advanced Applications
  • Report Writing
  • Advanced Sales Comparison & Cost Approaches
  • Market Analysis/Highest and Best Use
  • Advanced Income Capitalization
  • Evaluating Commercial Constructio
  • Uniform Standards of Professional Practice 15 Hour
  • Uniform Standards of Professional Practice 7 Hour
  • Comprehensive Exam
  • Traditional Demonstration Report


  • Uniform Appraisal Standards for Federal Land Acquisitions (Yellow Book)


  • Basic Appraisal Principles and Practices
  • Residential Case Studies
  • Basic Income Capitalization


  • Case Studies in Income Property Appraisal

LINFIELD COLLEGE, McMinnville, Oregon, 1992-1996

  • Bachelor of Science


Magistrate Division of the Oregon Tax Court