Fannie Mae Multifamily Data Standardization


Data access and governance is essential to digital transformation. As part of our work to build a best-in-class digital platform, Fannie Mae will begin requiring structured data supplements for certain third-party reports in mid-2020.

These standards were developed with the cooperation of DUS® Lenders and industry participants. Structured data from these reports will enable more efficient reviews and seamless data delivery.

The Multifamily Selling and Servicing Guide will be updated shortly to require the delivery of standardized data sets as supplements for the following report types:

  • Property Condition Assessment (including the Form 4099.E-Property Condition Report Templates);
  • Environmental Site Assessment (Phase I and, if applicable, Phase II);
  • Zoning Report (if applicable); and
  • Seismic Risk Assessment

Action Items

Lenders should work with their third-party report providers to promote understanding of the requirements and prepare to adopt and deliver structured data accordingly.

Frequently Asked Questions

In the fall of 2019, Fannie Mae released the Multifamily Mortgage Business Lender Letter 19-09 highlighting the new standard data set requirements, scope of impacted reports, actions required, and effective date. Fannie Mae also announced information sessions for DUS Lenders which were conducted in 2019.

Fannie Mae and DUS Lenders will co-host additional information sessions in 2020 which will be open to third-party report vendors. Please see Information Sessions.

The Fannie Mae DUS Third-Party Report Standards and Report Specifications Package are available on Fannie Mae’s website under the Multifamily Learning Center’s Learning Library. Access the report standard details using the hyperlinks above.

The Fannie Mae DUS Third-Party Report Specifications Package includes two sets of templates (XSD and Excel) and two sets of sample data files (XML and CSV) for each third-party report. Fannie Mae will, therefore, be able to accept XML data files, CSV data files or a combination of both formats.

The standardized data sets will be required for all reports beginning sometime in mid-2020.  Additional information regarding specific deadlines will be communicated in Q1 2020.

Yes. The requirement for the narratives for third-party reports will not change. The new standard data set requirements will simply require the structured data supplements to accompany report narratives.

Yes. The requirements for the site inspection and its corresponding MBA Master Inspection Form will not change.

Yes. Structured data supplements will be required for Streamlined Property Condition Assessments. The technical specifications created for the Base Property Condition Assessment will also work for the Streamlined Property Condition Assessment.

No. The requirements for Zoning and Legal Non-Conforming Uses will not change.

There are two parts to the transmission of third-party report data sets — first, from third-party report vendors to DUS Lenders; and second, from DUS Lenders to Fannie Mae. While each DUS Lender will determine the transmission method it will accept for delivery of data from its third-party report vendors, Fannie Mae will establish the data transmission methods for delivery from DUS Lenders to Fannie Mae. There will be further announcements to DUS Lenders in Q1 2020 regarding the required transmission methods for delivery to Fannie Mae.

  • Fannie Mae DUS Third-Party Report Standards

  • Fannie Mae DUS Third-Party Report Specifications Package

Recommended Action Item Checklist For Third-Party Report Vendors 

  • Review the Fannie Mae DUS Third-Party Report Standards and Report Specifications Package

  • Review information from the Fannie Mae Multifamily Data Standardization website

  • Reach out to your DUS Lender(s) and discuss the data file format to adopt

  • Attend at least one of the upcoming information sessions co-hosted by Fannie Mae and Lenders

  • Submit any technical/file specification questions to [email protected]

  • Work with your DUS Lenders on any business or other questions

Contact Us

Please contact [email protected] with any questions. We will monitor this mailbox and use your inquiries to build additional frequently asked questions and responses.

Information Sessions for Vendors

The following information sessions will be co-hosted by Fannie Mae and DUS Lenders. All third-party report vendors are welcome to attend.

  • Tuesday, March 10, 2020 at 1 p.m. ET
  • Thursday, March 12, 2020 at 3 p.m. ET
  • Tuesday, March 17, 2020 at 1 p.m. ET
  • Thursday, March 26, 2020 at 3 p.m. ET
  • Tuesday, March 31, 2020 at 1 p.m. ET

If you’re interested in joining any of these sessions, please email: [email protected]