UAD 3.6 Common Errors: What Lenders, AMCs, and Appraisers Should Watch For

The transition to UAD 3.6 is changing more than the appearance of an appraisal report. It changes how appraisal information is captured, structured, validated, reviewed, and delivered.

For lenders, appraisal management companies (AMCs), and appraisal professionals, that means small data or reporting mistakes can create bigger review problems later.

As the industry moves further into the UAD 3.6 transition, understanding the UAD 3.6 common errors is becoming increasingly important. Knowing where these errors occur can help teams improve appraisal quality, reduce unnecessary revisions, and prepare their workflows for a more structured appraisal environment.

What Is UAD 3.6?

The Uniform Appraisal Dataset, or UAD, is the standardized dataset used to communicate appraisal information electronically to Fannie Mae and Freddie Mac.

UAD 3.6 is a major redesign of the appraisal dataset and reporting process. Instead of relying heavily on legacy appraisal forms and free-form commentary, UAD 3.6 uses a more structured, data-driven approach.

The goal is to make appraisal information more consistent, understandable, and useful for underwriting and collateral risk analysis.

For lenders and AMCs, this means appraisal quality control needs to evolve along with the new dataset.

Why Do UAD 3.6 Common Errors Matter?

An appraisal isn’t simply a document that needs to look complete. It contains information that can influence collateral risk assessment, underwriting decisions, property eligibility, appraisal quality reviews, loan delivery, and overall loan processing timelines.

UAD 3.6 introduces more structured data elements and defined values. That creates an opportunity for greater consistency, but it also means appraisal professionals and review teams need to understand how the new reporting environment works.

So, when teams talk about UAD 3.6 common errors, they’re not talking about one specific type of mistake. There can be technical errors, data errors, reporting errors, documentation issues, and appraisal-quality issues.

1. Using Free-Form Comments When Defined Data Is Available

UAD 3.6 moves more information into defined data fields and standardized values. That means appraisers need to become comfortable using the available structured fields instead of adding unnecessary explanations.

For example, if a report already contains a defined field describing a property’s condition, simply repeating the same information in a comment may add clutter without adding meaningful value.

The better approach is simple: use the structured UAD 3.6 fields whenever they appropriately capture the information, and use comments when they genuinely help explain the appraisal analysis.

2. Contradictory Information Between Data Fields and Comments

Another important UAD 3.6 common error is inconsistent information between structured data and narrative comments.

Imagine the structured data indicates that one comparable received the greatest weight in the final reconciliation. Then a narrative comment says the comparable sales were weighted equally.

Now the reviewer has two different messages.

The problem isn’t simply that there is a typo. The bigger problem is clarity and confidence in the appraisal analysis.

During appraisal review, teams should compare narrative comments against structured data and ask whether the information agrees, whether the explanation supports the analysis, and whether the comment is actually necessary.

3. Using Outdated UAD 2.6 Terminology

UAD 3.6 introduces changes in terminology. This creates a potential problem for teams that continue copying language from older templates, previous reports, or legacy workflows.

Many appraisal professionals have years of experience working with the previous system. Old terminology can easily become part of a new report through familiar templates and copy-and-paste workflows.

Appraisers and review teams should review existing templates, remove outdated terminology, understand current UAD 3.6 terminology, and avoid copying comments from older reports without reviewing them carefully.

4. Overusing “Other (Describe)”

UAD 3.6 provides defined choices for many types of information. A common mistake is selecting “Other (Describe)” when a more appropriate defined option is already available.

Standardized data is easier for people and systems to interpret. A vague custom description can introduce unnecessary ambiguity.

Before selecting an “Other” option, ask:

If there is, use the defined option.

5. Incorrect or Missing Images

UAD 3.6 also brings technical requirements surrounding appraisal images. A report may appear complete at first glance, but missing or incorrectly referenced images can create problems during submission or review.

Review teams should check that required images are present, correctly referenced, and associated with the appropriate portions of the appraisal.

This is a good example of why appraisal QC cannot focus only on the visible report. The underlying data and submission package matter too.

6. Incorrect XML or Data Formatting

UAD 3.6 is highly structured. As a result, the underlying data needs to meet specific technical requirements.

Problems can involve data formats, data types, XML structure, missing information, invalid values, or incorrect file structures.

These aren’t necessarily mistakes an appraiser will notice by simply looking at a PDF. That’s why technical compliance validation and appraisal quality review are related but different activities.

7. Incomplete Data

Another important category of UAD 3.6 common errors is missing or incomplete information.

Because UAD 3.6 is more structured, required information needs to be entered into the appropriate data elements. Missing information can create validation findings or require additional review.

For lenders and AMCs, this means quality control should ask more than:

A better question is:

8. Comparable Selection and Adjustment Problems

Not every appraisal quality issue is purely a UAD formatting issue. The underlying appraisal analysis still matters.

Common appraisal-quality concerns can include inadequate comparable adjustments, failure to adjust for material differences, inaccurate reporting of comparable condition or quality, and inappropriate comparable selection.

This is particularly important for lenders and AMCs. A report can technically pass a data validation check and still require professional appraisal-quality review.

9. Problems With Market Conditions and Time Adjustments

Market conditions analysis is another area where appraisal review deserves attention.

Reviewers should look for situations where comparable sale dates don’t align with the market conditions analysis, where the final adjustment doesn’t follow the analysis, or where the appraiser does not adequately support a decision to make or not make a time adjustment.

These issues demonstrate an important point: good appraisal QC looks for logical consistency, not just completed fields.

10. Incorrect Quality and Condition Ratings

UAD 3.6 retains the 1–6 quality and condition rating scales while providing enhanced definitions intended to improve consistency.

This creates another potential source of errors during the transition. An appraiser who is accustomed to interpreting the old definitions may unintentionally apply outdated thinking.

The answer is straightforward: training, review, and consistent use of current UAD 3.6 guidance.

How Can Lenders Reduce UAD 3.6 Errors?

For lenders, the transition shouldn’t be treated as an appraiser only responsibility. Lenders need to think about the entire appraisal workflow.

1. Update internal processes: Review appraisal ordering, review, QC, and delivery workflows.
2. Train internal teams: Make sure underwriting, appraisal review, QC, and operations teams understand the major changes.
3. Work with AMCs and appraisal partners: Make sure external partners understand expectations.
4. Test systems: Technology and integrations should be tested before production deadlines.
5. Monitor recurring findings: Look for patterns instead of correcting only individual reports.

How Can AMCs Prepare for UAD 3.6?

AMCs have an especially important role because they sit between lenders and appraisers.

An AMC can strengthen its review process by focusing on appraisal completeness, data consistency, UAD 3.6 compliance, comparable analysis, property information, images, comments, quality and condition ratings, revision requests, and turnaround time.

The goal shouldn’t be to create unnecessary revision cycles. The goal should be to identify meaningful issues early and communicate them clearly.

Where Can Technology Help?

UAD 3.6 creates a much more structured appraisal dataset. That creates opportunities for automated validation and intelligent quality checks.

But automation should not mean removing human judgment.

For example, an intelligent appraisal review process can help identify missing information, inconsistent data, potential contradictions, unusual values, data validation issues, comparable concerns, and possible revision items.

The human reviewer can then determine whether the finding is actually meaningful. This combination can help lenders and AMCs improve consistency without turning the process into a purely automated exercise.

How GoSource Can Help With Appraisal Quality?

For lenders and AMCs looking to strengthen their appraisal review process, GoSource approaches collateral intelligence through a combination of technology and human validation.

GoSource’s GOCIQ is an AI-powered, human-validated collateral intelligence service designed to analyze appraisal files using structured validation checks and professional review.

GOCIQ can run more than 1,300 validation checks against the appropriate UAD ruleset and is designed to return findings quickly. GoSource also incorporates USPAP-certified professional validation so teams receive actionable intelligence rather than raw automated output.

The objective is straightforward: help teams identify important appraisal issues earlier, reduce unnecessary review effort, and make collateral information easier to act on.

For lenders and AMCs preparing their appraisal workflows for UAD 3.6, this combination of structured technology and human expertise can provide another layer of quality control.

A Simple UAD 3.6 Error-Prevention Checklist

Before an appraisal moves forward, lenders and AMCs can use a simple checklist like this:

Final Thoughts

The biggest lesson from the UAD 3.6 common errors is that the transition isn’t simply about learning a new appraisal format. It’s about learning a new way of working with appraisal data.

Some mistakes will be technical. Some will involve incomplete data. Some will come from outdated terminology. Others will involve comments, comparable selection, adjustments, or the underlying appraisal analysis.

The good news is that many of these problems can be addressed through a combination of training, better workflows, consistent quality control, technology, and human review.

Lenders, AMCs, and appraisal professionals that prepare their systems, teams, workflows, and appraisal partners early will be better positioned to make the UAD 3.6 transition part of a smoother appraisal process.