Official Standards of IAAO
Downloads
Guide to Assessment Administration Standards 
View (Approved Aug. 2004)
Standard on Contracting for Assessment Services
View (Approved Dec 2008)
Standard on Administration of Monitoring and Compliance Responsibilities View (Approved July 2003)
Standard on Assessment Appeal View (Approved July 2001)
Standard on Automated Valuation Models (AVMs) View (Approved Sept 2003)
Standard on Digital Cadastral Maps and Parcel Identifiers View (Approved Jan 2009)
Standard on Facilities, Computers, Equipment, and Supplies View (Approved Jan 2003)
Standard on Manual Cadastral Maps and Parcel Identifiers View (Approved Aug. 2004)
Standard on Mass Appraisal of Real Property View (Approved Jan. 2008)
Standard on Professional Development View (Approved Dec 2000)
Standard on Property Tax Policy View (Approved Jan 2010)
Standard on Public Relations View (Approved Jan 2010)
Standard on Ratio Studies View (Approved Jan 2010)
Standard on Valuation of Personal Property View (Approved Dec 2005)
Standard on the Valuation of Properties Affected by Environmental Contamination View (Approved July 2001)
Click here to download the Adobe PDF reader.
The PDF reader is needed to read files marked with
International Association of Assessing Officers (IAAO) maintains technical standards that reflect the official position of IAAO on various topics that are important to individuals and organizations involved in mass appraisal and related disciplines.
Technical Standards can be purchased individually or as a full set using Marketplace . Anyone may freely download individual technical standards for personal reference and use.
IAAO allows reproduction of technical standards for educational purposes, property tax hearings, legislative development, and for public information purposes. The content of IAAO technical standards are subject to change. Current official versions of technical standards are available only from IAAO.
IAAO requests that users of technical standards request permission prior to using them for the stated purposes. Requests for permission to reproduce all or a portion of the technical standards can be sent to Christopher Bennett, bennett@iaao.org.
Technical Standards Committee
The Technical Standards Committee develops and maintains technical standards of professional practice in assessment administration, tax policy, and mass appraisal.
The purpose of this committee is to support the mission and commitments of the IAAO by conceptualizing, organizing, drafting, publishing and maintaining technical standards of professional practice. These standards should address property valuation, property tax administration, and property tax policy and should describe desirable models for the profession.
Copyright Notice
IAAO technical standards are protected by copyright.
IAAO reserves all rights inherent to copyright protection.
Three newly revised standards have been posted:
Standard on Property Tax Policy View (Approved Jan 2010)
Standard on Public Relations View (Approved Jan 2010)
Standard on Ratio Studies View (Approved Jan 2010)