The IAAO office will be closed the afternoon of Wednesday, June 11 for a team function.

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We are the International Association of Assessing Officers

We offer education, technical standards, consulting services and many other resources to the property valuation and tax policy community.

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Find the resources you need in the library

Looking for IAAO resources? Access internationally recognized publications, standards, and periodicals in our Library. Members can also explore the IAAO Research Exchange for essential research papers and journal articles on property tax assessment.

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IAAO Publications

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