Appraisal and Valuation Services Office

Independence, Integrity, and Upholding the Public Trust

The Appraisal and Valuation Services Office (AVSO) has the most diverse project portfolio of any appraisal organization in the Federal Government. We provide independent real property valuation and mineral evaluation services for the Department of the Interior in accordance with the highest professional and ethical standards. 

Learn more about AVSO >>

  • About Us

    At AVSO, we don't have one label that defines what we do. We're not commercial appraisers; we’re not residential appraisers. We do a unique kind of work.
  • Our Services

    With a highly skilled and experienced staff, AVSO provides professional appraisal and valuation services to Department clients on both Federal and Indian trust lands.
  • Opportunities

    Explore opportunities to work with AVSO.
  • What's New?

    Check here for any announcements.
  • AVIS (for AVSO Clients)

    The Appraisal and Valuation Information System (AVIS) is AVSO’s single case management system that incorporates the functionality of two legacy appraisal and valuation systems—OASIS and IVIS—to meet the needs of all users of DOI appraisal and valuation services.
  • Contact Us

    We welcome your questions and feedback.