Value Acceptance + Property Data
Updated September 2025
Fannie Mae is on a journey of continuous improvement to make the home valuation process more efficient and accurate. We provide a spectrum of options to establish a property’s market value, with the option matching the risk of the collateral and the loan transaction. The spectrum balances traditional appraisals with appraisal alternatives.
As a part of our value acceptance offering, value acceptance + property data extends value acceptance benefits to more borrowers while identifying current subject property characteristics including condition. These offers are issued through Desktop Underwriter® (DU®) using Fannie Mae’s database of millions of appraisals in Collateral Underwriter® (CU®) in combination with proprietary analytics to determine the minimum level of required collateral due diligence.
How value acceptance + property data works
- Lender receives value acceptance + property data offer from Desktop Underwriter (DU).
- Lender orders property data collection (PDC).
- Lender or service provider submits the results to Fannie Mae’s Property Data Application Programming Interface (API).

Exercising value acceptance + property data
A lender may only exercise value acceptance + property data when:
- The final submission of the loan casefile to DU resulted in an eligibility message for value acceptance + property data;
- Property data collection is submitted to the Property Data API prior to the note date;
- An appraisal is not obtained for the transaction; and
- The offer is not more than four months old on the date of the note and mortgage.
NOTES:
- Fannie Mae does not prescribe a specific transaction fulfillment model. The lender should determine how best to execute the Selling Guide property data collection and API submission requirements.
- The Property Data API will return a unique property data ID for each property data collection submitted that lenders and technology service providers can use for tracking and identification.
- When delivering the loan, the lender must include Special Feature Code 774.
Benefits of exercising a value acceptance + property data offer
- Reduces origination cycle time and borrower costs.
- Promotes safety/soundness by obtaining current observation of the subject property.
- Provides operational simplicity and value certainty at application.
NOTE: Fannie Mae estimates that value acceptance and value acceptance + property data on loans sold to us saved mortgage borrowers over $2.8 billion since 20181.
Representations and warranties
The following table describes the representations and warranties the lender must make (“Yes”) if they exercise a value acceptance or value acceptance + property data offer. The table also identifies the representations and warranties the lender is not responsible for (“No”).
Representations and warranties related to ... | Contract price or value estimate and marketability | Property description* | Property eligibility, including condition | Condition with a recent disaster |
---|---|---|---|---|
Value acceptance | No | No | No | Yes |
Value acceptance + property data | No | Yes | Yes** | Yes |
* The lender remains responsible for the accuracy and completeness of all data that pertains to the property and project (if applicable) that is submitted to DU (other than the property value).
**Includes warranty that the property is safe, sound, and structurally secure.
Eligible transactions for value acceptance + property data
DU loan casefiles for eligible single-family one-unit properties including condominiums (attached and detached) will be considered for value acceptance + property data.
For a list of ineligible transactions, see the Selling Guide B4-1.4-11, Value Acceptance + Property Data.
Property data collection (PDC)
PDC is the act of physically observing and reporting property characteristics. The data collection must be performed by a trained and vetted third party or appraiser and does not involve the development of an opinion of value. It must adhere to the Uniform Property Dataset (UPD). See the UPD page for more information. Once the PDC is complete and passes through quality control checks, it must be submitted to Fannie Mae’s Property Data API.
Tech and tools | |
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Visit the Property Valuations webpage to get onboarding details and more information about using technology and tools. | |
Property Data API Fannie Mae has established a property data standard and API to collect data and images consistently. The process encourages the use of emerging technologies to capture property information, imagery, and floor plans. | Property Data API Review Tools Lenders and appraisal management companies may use our property data collection web viewer known as Property Data API Review Tool (PDART) to aid with their required review process. Users can easily view the submitted property data, photos, and floor plan, as well as messages to help identify any potential property data collection issues. |
Lender responsibilities
In transactions involving property data collection, the lender is responsible for:
- Verifying and having the ability to demonstrate that the data collectors are vetted through an annual background check, are professionally trained, and possess the essential knowledge to competently complete the property data collection;
- Ensuring that the data collectors are trained to comply with fair lending laws and deliver accurate results unaffected by personal biases;
- Compliance with the Property Data Collector Independence Requirements;
- Selection of the property data collector (see Selling Guide B4-1.4-11, Value Acceptance + Property Data);
- Successful submission of the data to Fannie Mae’s Property Data API prior to the note date;
- Continually evaluating the property data collector’s work through their quality control process; and
- Delivering the loan with Special Feature Code 774.
NOTE: In transactions involving property data collection, the lender is responsible for ensuring that the data collectors are trained to comply with fair lending laws and deliver accurate results unaffected by personal biases.
1Fannie Mae analysis based on loan delivery data from January 2018 through March 2025 using $550 as the approximate weighted average appraisal cost savings.