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 >>

  • Yosemite Park, USA
    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.

    About Us

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

    Our Services

  • Valley of Fire, Nevada,USA
    Explore opportunities to work with AVSO.


  • White Sands National Park
    Check here for any announcements.

    What's New?

  • Rocky Monument
    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.

    AVIS (for AVSO Clients)

  • Buffalo in front of stream on the plains
    We welcome your questions and feedback.

    Contact Us