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Uniform Loan Delivery Dataset

The Uniform Loan Delivery Dataset (ULDD) supports the work to implement uniform data standards and defines the data that we require at loan delivery based on loan type, loan feature or other business requirements.

Business Resources

ULDD data is granular, standardized, and has clear definitions, providing sellers with a common understanding of the meaning of each data point. The result is greater transparency, which helps sellers gain a better understanding of our assessment of mortgage risk and purchase requirements on loans they sell to us.

ULDD Revisions

The ULDD Revisions webpage is designed to assist you with loan delivery requirement revisions to ULDD since the last publication. The revisions include ULDD specification updates and ULDD impacts that were previously communicated in Single-Family Seller/Servicer Guide (Guide) Bulletins. The webpage will be updated periodically.

ULDD Phase 5

ULDD Phase 5 incorporates business critical requirements, aligns with the new redesigned UAD 3.6, and supports the Enterprise Credit Score and Credit Reports Initiative.

Additional Resources

Technical Resources

The following resources provide the technical documentation that Freddie Mac-approved Sellers and vendors need to implement Freddie Mac's loan delivery data requirements:

Announcements

2026

2025

  • May 20, 2025 – ULDD Phase 4a and Phase 5 Updates and Guidance

2023

2022

2021

  • December 14, 2021 – ULDD Phase 4a Specification Release
  • June 8, 2021 – ULDD Updates for CMT-indexed ARMs Retirement, Implementation Notes and Enumerations

2020

  • December 1, 2020 – Updates to Support ULDD LIBOR to SOFR ARM Index Transition, Condo Delivery and Home Possible® Mortgage
  • April 21, 2020 – ULDD Updates Supporting SOFR ARM Index Transition

2019

2018

2017

2016

2013

2012

Uniform Loan Delivery Dataset (ULDD) - Revisions

Most Recent Updates as of October 7, 2026

The Uniform Loan Delivery Dataset (ULDD) revisions webpage is designed to assist you with loan delivery requirement revisions to ULDD since the publication of Appendices A and D on May 26, 2026. These revisions include ULDD specification updates and ULDD impacts that have been previously communicated in the Single-Family Seller/Servicer Guide (Guide) Bulletins.

The information on this webpage will be removed once the revisions have been incorporated into Appendices A and D.

The ULDD revisions are listed in the tables below. These tables identify the communication date and Guide Bulletin number if applicable, Sort ID, Data Point Name, Revision Effective Date, a description of the change, and the ULDD column(s) that have been revised (text being removed will be displayed in red strikethrough, text being added will be displayed in blue).

Revised ULDD Data Points

October 7, 2026 – Bulletin 2026-13

Sort IDData Point NameRevision Effective DateRevision DescriptionRevision for FRE Conditionality DetailsRevision for FRE Implementation NotesRevision for FRE Supported Enumerations
193.1Alterations Improvements And Repairs AmountJanuary 25, 2027Updated Conditionality Details to remove Loan Program Identifier "CHOICE­Reno­EXpress­DTSArea".IF Sort ID Sort ID ­404-LoanProgramIdentifier = “CHOICERenovation”, “CHOICERenoEXpress”,  “CHOICEReno­­­EXpress­­­DTSArea” OR or "CHOICERenovationInProgess"

Values: 

◊ Enter the total renovation costs amount associated with the renovation loan. 
◊ The amount entered must be greater than "0" (zero). 
◊ For CHOICERenovation® Mortgages eligible for the credit for Credit Fees for GreenCHOICE Mortgages®, refer to Guide Section 6302.43(c).
 

 
193.1Alterations Improvements And Repairs AmountMarch 1, 2027Removed Implementation Notes for GreenCHOICE Mortgages®.IF Sort ID Sort ID ­404-LoanProgramIdentifier = “CHOICERenovation”, “CHOICERenoEXpress” or "CHOICERenovationInProgess"

Values:

◊ Enter the total renovation costs amount associated with the renovation loan.
◊ The amount entered must be greater than "0" (zero).
◊ For CHOICERenovation® Mortgages eligible for the credit for Credit Fees for GreenCHOICE Mortgages®, refer to Guide Section 6302.43(c).
 

 
221Related Investor Loan IdentifierJanuary 25, 2027Removed Implementation Notes for GreenCHOICE Mortgages®.IF Sort ID ­222-Related­­LoanInvestorType="FRE"

Values:

◊ This is the 9-digit Freddie Mac-supplied number assigned to the original Mortgage by the Seller when the Mortgage was initially sold to Freddie Mac.
◊ Enter the 9-digit Freddie Mac-supplied number assigned to the original Mortgage by the Seller when the Mortgage was initially sold to Freddie Mac for Freddie Mac-Owned Converted Mortgages, Enhanced Relief Refinance Mortgages, Refi PossibleSM Mortgages, and, if available, HomeOneSM Mortgages, Freddie Mac-owned "no cash-out" refinance Condominium Unit Mortgages, Freddie Mac-owned "no cash-out" refinance Cooperative Share Loans,  GreenCHOICE MortgagesSM, OR as directed in Seller's negotiated term.
Format: Values may not exceed 9 characters.

 
222Related Loan Investor TypeJanuary 25, 2027Removed Implementation Notes for GreenCHOICE Mortgages®.IF applies

Values:

◊ Enter "FRE" for Freddie Mac-owned Converted Mortgages, Freddie Mac-owned "no cash-out" refinance Condominium Unit Mortgages, Freddie Mac-owned "no cash-out" refinance Cooperative Share Loans, GreenCHOICE MortgagesSM , Enhanced Relief Refinance Mortgages, HomeOneSM Mortgages, and Refi PossibleSM Mortgages, OR as directed in Seller's negotiated term. 
◊ Enter "Seller" for Seller-Owned Modified Mortgages and Seller-Owned Converted Mortgages.

FRE 
Seller
244.1Energy Improvement AmountJanuary 25, 2027

Updated Conditionality Details for GreenCHOICE Mortgages® - added criteria of application received date prior to January 25, 2027.

Added Conditionality Details and Implementation Notes for CHOICEReno eXPress® and CHOICERenovation® Mortgages.

IF [(Sort ID ­404-LoanProgramIdentifier = "GreenCHOICE" or ­"GreenCHOICE­­ToPayOffOutstanding­­EnergyDebt") AND Sort ID 224-ApplicationReceivedDate < "2027-01-25"] OR
[(Sort ID 404-LoanProgramIdentifier = "CHOICERenovation", "CHOICERenoEXpress" or CHOICERenovation­InProgress) AND IF Applies]

Values:

◊ For GreenCHOICE Mortgages®,Eenter the cost of the eligible improvements as described in Guide Section 4606.1(b) (November 6, 2024) or the amount to pay an Existing Debt as specified in Guide Section 4606.1(c) (November 6, 2024).  ◊ The amount entered must be greater than "0" (zero). 
◊ For CHOICEReno eXPress® Mortgages, if applicable, enter the cost of the eligible renovations as described in Guide Section 4606.1(e) or the amount to pay an Existing Debt as specified in Guide Section 4606.3(c).
◊ For CHOICERenovation® Mortgages (CHOICERenovation and CHOICERenovation­InProgress), if applicable, enter the cost of the eligible renovations as described in Section 4607.6(a) or the amount to payoff short-term financing, as defined in Section 4607.6(d).

 
244.1Energy Improvement AmountMarch 1, 2027Removed Conditionality Details and Implementation Notes for GreenCHOICE Mortgages®.IF [(Sort ID 404-LoanProgramIdentifier = "GreenCHOICE" or ­"GreenCHOICE­­ToPayOff­­­Outstanding­­EnergyDebt") AND Sort ID 224-­Application­­ReceivedDate < "2027-01-24"] OR
[
(Sort ID 404-LoanProgram­Identifier = "CHOICERenovation", "CHOICERenoEXpress" or CHOICERenovationInProgress) AND IF Applies ]

Values:  

◊ For GreenCHOICE Mortgages®enter the cost of the eligible improvements as described in Guide Section 4606.1(b) (November 6, 2024) or the amount to pay an Existing Debt as specified in Guide Section 4606.1(c) (November 6, 2024). The amount entered must be greater than "0" (zero).
◊ For CHOICEReno eXPress® Mortgages, if applicable, enter the cost of the eligible improvements as described in Guide Section 4606.1(e) or the amount to pay an Existing Debt as specified in Guide Section 4606.3(c).
◊ For CHOICERenovation® Mortgages (CHOICERenovation and CHOICERenovation­InProgress), if applicable, enter the cost of the eligible renovations as described in Section 4607.6(a) or the amount to payoff short-term financing, as defined in Section 4607.6(d).

 
293Refinance Cash Out AmountJanuary 25, 2027Removed Implementation Notes for GreenCHOICE Mortgages® and CHOICERenovation® Mortgages.IF Sort ID 294-RefinanceCashOutDeterminationType = "CashOut"

Format: Enter as a positive number.
Values: 

◊ Enter the Note Amount (Sort ID 319) minus the following amounts paid with the proceeds of the refinanced Mortgage:

  • Existing first lien (including prepayment penalty)
  • The amount paid on any subordinate liens secured by the Mortgaged Premises that were used in their entirety to purchase the subject property
  • Closing Costs 
  • The outstanding balance of a land contract or contract for deed, per the requirements of Guide Section 4404.1
  • A Property Assessed Clean Energy (PACE) or PACE-like obligation, per the requirements of Guide Section 4301.8 
  • For GreenCHOICE Mortgages®, the eligible improvements, per the requirements of Guide Sections 4606.1(b) and 4606.3 
  • For CHOICERenovation® Mortgages, the eligible renovations per the requirements of Guide Sections 4607.6 and 4607.7(c) 

 

 
320Note DateJanuary 25, 2027Added Implementation Notes for CHOICEReno eXPress® Mortgages.IF Sort ID 397-MortgageModificationIndicator = "false"

Values: 

◊ Enter the original Note Date unless the Mortgage is one of the following:

◊ For Construction to Permanent Mortgages and Renovation Mortgages:

  • For one-time close transaction with automatic conversion, enter the Note Date of the One-Time Close transaction.
  • For two-time close transaction, enter the Note Date of the Permanent Financing.

◊ For Seller-Owned Modifications this data point is not required.
◊ Enter the date of GreenCHOICE or CHOICEReno eXPress® Mortgage ® funding and not the anticipated date of final disbursement of the Escrow Funds.

 
320Note DateMarch 1, 2027Removed Implementation Notes for GreenCHOICE Mortgages®.IF Sort ID 397-MortgageModificationIndicator = "false"

Values: 

Enter the original Note Date unless the Mortgage is one of the following:  

◊ For Construction to Permanent Mortgages and Renovation Mortgages:

  • For one-time close transaction with automatic conversion, enter the Note Date of the One-Time Close transaction.
  • For two-time close transaction, enter the Note Date of the Permanent Financing.

◊ For Seller-Owned Modifications this data point is not required.  

◊ Enter the date of  GreenCHOICE or CHOICEReno eXPress® Mortgage funding and not the anticipated date of final disbursement of the Escrow Funds.

 
363Escrow Balance AmountMarch 1, 2027Removed Implementation Notes for GreenCHOICE Mortgages®.IF [Sort ID 234-EscrowIndicator = "true" AND (Mortgage is delivered through Cash-Released XChange® OR Co-Issue XChange® where All-in Funding is enabled)] OR IF appliesValues:   
◊ For Mortgages with Escrow accounts sold through Cash-Released XChange® or Co-Issue XChange® where All-in Funding is enabled, enter the Escrow balance amount.
◊ For Concurrent Transfer of Servicing (CTOS) Mortgages with Escrow accounts, enter the Escrow balance amount.  
◊ For GreenCHOICE Mortgages® , enter the Escrow balance amount sufficient to cover the cost of the eligible improvements.
 
404Loan Program IdentifierJanuary 25, 2027Removed enumeration "CHOICERenoEXpressDTSArea".IF appliesValues:
◊ Enter "EnergyConservation" for Mortgages that finance the purchase of a property that is to be retrofitted, refurbished, or improved with energy conservation components.
◊ Enter "Renovation" for Renovation Mortgages meeting the requirements of Guide Section 4602.3.
See Tab-Enumerations  CHOICEReno­EXpress­DTSArea
404Loan Program IdentifierMarch 1, 2027Removed enumerations "GreenCHOICE" and "GreenCHOICEToPayOffOutstandingEnergyDebt".IF appliesValues:
◊ Enter "EnergyConservation" for Mortgages that finance the purchase of a property that is to be retrofitted, refurbished, or improved with energy conservation components.
◊ Enter "Renovation" for Renovation Mortgages meeting the requirements of Guide Section 4602.3.
See Tab-Enumerations
GreenCHOICE GreenCHOICE­­­ToPayOff­­Outstanding­­­EnergyDebt

This information is not a replacement or substitute for the requirements in the Freddie Mac Single-Family Seller/Servicer Guide or any other contractual agreements. This information does not constitute an agreement between Freddie Mac and any other party. © 2026 Freddie Mac.

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