About the Office of Appraisal Services

OAS Regional Map - Click here to go to the Contact Us page

The Office of Appraisal Services (OAS) provides appraisals, appraisal reviews, and appraisal consulting of real property interests on trust and restricted lands. OAS supports the Secretary of the Interior's trust responsibilities for tribal and individual Indian beneficiaries trust assets.

The request for appraisal services determines the market value for various real estate transactions and provides beneficiaries with information about their trust asset. The Bureau of Indian Affairs (BIA) and contract or compact tribes operating the real estate services program request appraisals to support the following types of real estate transactions:

  • Sales
  • Agriculture leases
  • Business leases
  • Rights-of-way
  • Land exchanges
  • Acquisitions
  • Trespass
  • Other types of real estate transactions

The OAS Director has supervision of 12 regional offices aligned with the 12 BIA regional offices throughout Indian country. In each regional office is a Regional Supervisory Appraiser who is responsible for the incoming appraisal services and managing appraisal assignments.

OAS also supports the Land Buy-Back Program for Tribal Nations by providing land valuation services. Land valuation, a technical process that provides a baseline or benchmark, enables decisions to be made about fair market values.