Applications Programming Interfaces (APIs)

Loan Lookup API

Simplifying the refinance process

The Loan Lookup API enables lenders to determine in real time if a loan is owned by Fannie Mae for the purpose of identifying eligibility for underwriting and/or appraisal flexibilities.

Lenders can submit minimal data for multiple borrowers at once and receive a response indicating whether each borrower’s loan is owned by Fannie Mae. The API is provided pursuant to the terms and conditions set forth in the Desktop Underwriter® (DU®) Schedule to Fannie Mae’s Software Subscription Agreement.

Operational efficiencies

  • Automates the process of confirming ownership for up to 100 loans at a time and streamlines the steps in the origination process.

Reduced data inputs

  • Minimal data is required as an input – just a borrower’s name, property address, and the last four digits of their social security number.

Bulk identification

  • Verify ownership for up to 100 loans at a time.

When would I use this API?

Lenders can proactively identify loans within their refinance pipeline that may be eligible for underwriting and/or appraisal flexibilities.

These flexibilities allow lenders to prioritize loans that could benefit most from an abbreviated process by streamlining the steps for processing these loans.