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314 West 10th Street
Kansas City
Missouri 64105

Tel: +1 (816) 701-8100
Fax: +1 (816) 701-8149


President: Amy Rasmussen, RES, AAS, FIAAO
President-Elect: Greg McHenry, AAS
Past President: Tim Boncoskey
Executve Director: Debra McGuire, MBA, IOM, CAE
Secretariat: 23 staff

Number of direct members: 6.509
Number of qualified valuers (individuals): 740
Number of valuation companies: none

Member of TEGoVA since: October 2017
Category of membership: Observer


Founded in 1934 and with 6.500 members worldwide, IAAO is a global community of mass appraisal experts who promote excellence in property appraisal, assessment administration and property tax policy through professional development, research and standards.

Permanent Representative to TEGoVA

Debra McGuire

Debra McGuire, MBA, IOM, CAE

Executive Director

Tel: +1 (816) 701 8120

Brief History and Role

IAAO has been in continuous operation as a private non-profit corporation since 1934 providing education, standards and professional designations to persons involved in the assessment and taxation of property.

Principal Activities

Classroom, online and self-study education services are provided to over 6,000 students annually.

Professional designations recognize a high level of education and expertise in areas of valuation and assessment administration.

Technical assistance is provided to local jurisdictions on an ad hoc, as needed basis.

Brief Areas of Policy

IAAO is governed by a comprehensive constitution, bylaws and procedural rules. In addition, standards have been developed in most areas of valuation and assessment administration, some of which have been codified by local jurisdictions.


IAAO is governed by a fourteen (14) member board of directors that are elected by the membership.


IAAO serves property assessment professionals worldwide from government jurisdictions and agencies as well as various business and academic communities. Our members represent a wide range of locations and areas of expertise, part of what makes IAAO the internationally recognized leader for mass appraisal standards.


In addition to the material that supports our educational offerings, IAAO publishes a monthly magazine called Fair & Equitable, a scholarly journal called The Journal of Property Tax Assessment and Administration and several text and reference books.