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Originate and Underwrite

Become a Seller/Servicer

Find out information on our credit requirements, underwriting, fraud prevention, quality control, and other useful information for originating and underwriting mortgages.

Origination Resources

Watch Video Freddie Mac's Reorganized Single-Family Seller/Servicer Guide

Learn more about the Reorganized Single-Family Seller/Servicer Guide

Appraisal Resources

Our appraisal standards and tools are in place to enhance appraisal data quality and consistency, promote the collection of electronic appraisal data, and provide important protections to homebuyers, mortgage investors, and the housing market.

Uniform Appraisal Dataset Redesign

Freddie Mac and Fannie Mae (the GSEs) have launched an initiative to update the Uniform Appraisal Dataset (UAD) and uniform appraisal reporting forms. The UAD and Forms Redesign initiative will leverage extensive stakeholder input to update the appraisal dataset, align it with the industry-standard MISMO® Reference Model Version 3.X, and overhaul the uniform appraisal forms to establish a more flexible, dynamic structure for appraisal reporting. This work is designed to provide greater clarity to lenders, borrowers, and investors; simplify appraisal reporting and reviewing; and build a foundation for appraisal modernization. The UAD was implemented in 2011, introducing the first-ever standardization and common requirements for appraisal data. This work represented a significant step forward, driving improved data quality and consistency, supporting analysis to drive more effective risk management, and enabling innovation.

The GSEs are working together, at the direction of the Federal Housing Finance Agency (FHFA), to assess and, as appropriate, begin implementation of strategies to redesign the UAD. Under the auspices of the Uniform Mortgage Data Program (UMDP), the initiative will focus on modernization of the current UAD dataset and residential appraisal forms. The initial stages of the multi-year initiative will explore options and make recommendations regarding changes to the UAD and appraisal forms that will support emerging technologies and data updates, and provide a foundation for appraisal process modernization. The first phase of the project involves collection of input from industry stakeholders. The GSEs have begun conversations with appraisal software and forms vendors, and in the coming months will engage lenders; appraisers and appraisal management companies (AMCs); industry groups and trade associations; and government agencies and departments. The GSEs will provide periodic updates and progress notifications.

Rural Property Requirements

Explore the rural housing market and open your business to new opportunities. We'll work with you to better understand our appraisal and underwriting requirements for rural properties so you can help more borrowers in rural communities purchase a home. Review our Q&A for more information.

Appraiser Independence Requirements (AIR)

AIR is based on certain standards from the Home Valuation Code of Conduct (Code). The requirements ensure that we continue to maintain the highest standard of appraiser independence and appraisal reliability for the industry.

Automated Valuation Modeling Tools

Freddie Mac's Home Value Suite is a set of valuation modeling tools that automate, streamline, and drive down the cost of collateral valuation.

Home Value Explorer® (HVE®)

Home Value Explorer

Our Automated Valuation Model (AVM) tool that generates property value estimates for all 50 states with a database of approximately 81 million property records.

Learn more

Home Value Calibrator® (Calibrator)

Home Value Calibrator

Calibrator is a quality control tool that measures the risk that an appraisal, or other estimate of a property value, exceeds the actual market value.

Learn more

Help & Training


Sign up at Freddie Mac Learning to view webinars and self-paced tutorials to help you with originating and underwriting mortgages.

Job Aids

For self-serve resources on originating and underwriting mortgages, the Uniform Collateral Data Portal (UCDP), Refinances or Quality Control and Fraud, click here.

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