The residential appraisal industry is in the middle of one of its biggest shifts in decades. The Uniform Appraisal Dataset (UAD) 3.6 and the redesigned Uniform Residential Appraisal Report (URAR) are replacing the familiar stack of legacy forms (the 1004, 2055, 1073, 1075, and others) with a single, dynamic report that adapts to your assignment.
It’s a smarter system, but it’s also a new one, and new systems come with a learning curve. One thing is clear from appraisers navigating this transition: the answers to most UAD 3.6 questions already exist. The challenge isn’t a lack of guidance; it’s knowing where to look.
The GSEs have published a comprehensive set of documentation to support the rollout, but that information is spread across multiple resources. Without a strategy for navigating those resources, even experienced appraisers can find themselves spinning their wheels.
That’s the idea behind building your own “Answer Headquarters” for UAD 3.6: a reliable, repeatable system for finding what you need, when you need it. At the center of that system are three key appendices.
Take it further with McKissock’s AI in Appraisal Clinics. Register for upcoming sessions specifically focused on “Navigating UAD 3.6” on June 30 and July 2, 2026.
Start Here: The Appendices as Your Foundation
When Fannie Mae and Freddie Mac rolled out UAD 3.6, they published an entire documentation ecosystem to go with it. That ecosystem includes a full suite of appendices (A-1 through G-1), each serving a specific purpose. Some are highly technical and aimed at software developers and data delivery. But for appraisers doing the day-to-day work of completing reports, three appendices are essential core references: F-1, C-1, and D-1.
Here’s how each one functions:
Appendix F-1: The Field-by-Field Reference Guide
If there’s a single document that deserves the title of “master manual” for the dynamic URAR, it’s Appendix F-1. This is your comprehensive field guide. It details every possible field in the report, specifies when each field is required (and when it’s conditional), defines what answers are acceptable, and explains how data must be formatted.
For each field, F-1 provides a unique Report Field ID: a numeric identifier you can use to cross-reference information across other resources. It also tells you whether a field is always required, required only under certain conditions, or optional. This is especially important in the new dynamic URAR, where sections and fields appear or disappear based on property characteristics and assignment type.
The interactive table of contents in F-1 covers all 29 sections of the URAR, from Site to Sales Comparison Approach to Outbuildings, allowing you to jump directly to the section you need without scrolling through the entire document.
One important note: F-1 is a living document. The GSEs will update it as UAD 3.6 requirements are refined, so it’s worth bookmarking the source and checking it periodically to make sure you’re working with the most current version.
Appendix C-1: Your Visual Roadmap
If F-1 is the user manual, C-1 is the map. Appendix C-1 is a visual layout of the dynamic URAR that shows every possible field and label that could appear in a report, giving you a complete picture of the report’s full scope before you ever open an assignment.
What makes C-1 especially useful is that it lets you see the report in its most complete possible form. Because the dynamic URAR is designed to show only the fields relevant to a specific property and assignment type, any given report you’re working on may not display everything. C-1 shows you the full universe of possibilities.
Each field in C-1 carries the same Field ID used in F-1, creating a direct cross-reference between the two documents. See a field in C-1 and want the details on what’s required? Take that Field ID straight to F-1.
C-1 is also invaluable for pre-inspection planning. Before heading to a property, you can review C-1 to understand which sections are likely to be triggered by the property’s characteristics. Appraising a condo? Review the Project Information section ahead of time. Property has an ADU or solar panels? C-1 shows you exactly what additional fields will appear.
Think of C-1 and F-1 as partners: C-1 shows you what’s possible, and F-1 tells you how to complete each field correctly.
Appendix D-1: Context and Practical Examples
While F-1 and C-1 handle the mechanics of the report, Appendix D-1 adds interpretive depth. This appendix provides sample scenarios that show how specific data elements fit into the overall appraisal and are particularly useful when you’re dealing with edge cases or less common property situations.
Where F-1 gives you the rule, D-1 often shows you what that rule looks like in practice. The recommendation is a practical one: keep D-1 open alongside F-1 when completing your first few assignments in the new format. The combination of field-level requirements and real-world examples is one of the fastest ways to build fluency with the dynamic URAR.
Layer In the Selling and Servicing Guides
The appendices answer the “how” of UAD 3.6. For the “why”—the policy context and secondary market expectations behind those requirements—you need to work with the Fannie Mae and Freddie Mac Selling and Servicing Guides.
Both GSEs have updated their guidance to reflect UAD 3.6 requirements, though they’ve taken slightly different approaches to implementation.
Fannie Mae published a separate Selling Guide Supplement specifically for UAD 3.6 policy changes, covering:
- The dynamic URAR rollout
- Updated quality and condition standards
- Refined square footage measurement requirements
- New protocols for appraisal updates and completion reporting
During the transition period, you’ll use this supplement for UAD 3.6 assignments and the standard Selling Guide for UAD 2.6 legacy assignments.
Freddie Mac, on the other hand, integrated UAD 3.6 requirements directly into their Selling/Servicer Guide. Sections with multiple versions (one for legacy UAD 2.6, one for UAD 3.6) are clearly flagged at the top, so you’ll need to make sure you’re referencing the right version for the assignment at hand.
While the requirements generally align between the two GSEs, there are nuances, which makes it worth bookmarking both. Together, the GSE Guide updates and the appendices create a complementary framework: the Guides establish what’s required, and the appendices explain how to report it.
A Note on the Sales Comparison Approach
The sales comparison approach in UAD 3.6 is one of the areas where the shift from legacy forms to the dynamic URAR is most visible. The old static grid is gone, replaced by structured, field-based reporting that aligns with UAD 3.6’s broader emphasis on enumerated data and standardized inputs.
Navigating the sales comparison section of the new URAR is a good exercise in putting the appendix-based workflow into practice:
- Start with C-1 to identify all the fields that could appear in the sales comparison section.
- Use F-1 to understand the requirements for each specific field, including what’s always required, what’s conditional, and what formats are acceptable.
- Reference D-1 for practical examples, especially for situations like documenting seller concessions, condition and quality rating differences, or less common transaction types.
This layered approach (C-1 for the overview, F-1 for the specifics, D-1 for context) is the core of an effective UAD 3.6 reference workflow.
Building a Repeatable Reference Workflow
The biggest takeaway from working with these resources is that they’re most powerful when used together, not in isolation. The appraisers who will navigate the UAD 3.6 transition most efficiently are the ones who develop a consistent, repeatable approach to research: knowing which document to open first, how to move between them, and when to reach for the Selling Guide versus an appendix.
Here’s a practical starting point for that workflow:
- Before any new assignment type, spend time in C-1 to understand the relevant sections of the URAR.
- For any specific field question, go directly to F-1 using the Field ID.
- For context or edge cases, pull up D-1 for sample scenarios.
- For policy and compliance questions, reference the Fannie Mae Supplement or Freddie Mac Guide updates.
It will feel like a lot at first, but like learning any new system, the more you use it, the more intuitive it becomes. Your appraisal software will also do significant heavy lifting, surfacing the right fields and drop-down options based on your entries.
The appendices are most critical during the learning curve and whenever you encounter an unusual scenario. Over time, you’ll consult them less for routine assignments.
Ready to Take It Further? Join the AI in Appraisal Clinic
Knowing which documents to use is one thing; navigating them efficiently while managing a full caseload is another. That’s where AI can reshape how you work, helping to streamline the process.
McKissock’s AI in Appraisal Clinics include upcoming sessions specifically focused on UAD 3.6: “Navigating UAD 3.6” on June 30 and July 2, 2026. These practical, hands-on clinics are included for FREE with McKissock CE Membership.
The Navigating UAD 3.6 AI Clinic will show appraisers how to use AI to build a practical UAD 3.6 Command Center, a repeatable workflow for organizing official guidance, asking source-based questions, summarizing updates, creating reference materials and SOPs, and staying current. It focuses on managing UAD 3.6 information effectively and turn it into a usable working system.
A UAD 3.6 Command Center is one place (and workflow) where an appraiser can:
- Collect all relevant guidance (appendices, FAQs, updates)
- Organize the guidance in a usable structure
- Ask questions and receive source-based answers
- Summarize and translate GSE material into usable insights
- Create outputs such as SOPs, checklists, and quick-reference tools
- Keep everything updated as guidance evolves
The June 30 and July 2 sessions are live, interactive, and built specifically for appraisers.
The Bottom Line
The UAD 3.6 documentation can feel overwhelming at first glance; there’s a lot of it. But it was built to be navigated, and when you understand the role of each resource, a clear picture emerges.
Appendix F-1 is your field-level rulebook. Appendix C-1 is your visual map of the full report. Appendix D-1 provides practical context. And the GSE Selling and Servicing Guide updates connect all of it back to policy.
Build the habit of using these together, and you’ll have a reliable Answer Headquarters for UAD 3.6 that serves you through every assignment—routine or complex.
Want to go deeper? McKissock’s course UAD 3.6: Inspection Workflow Wizardry covers the full resource navigation system, pre-inspection planning, quality and condition ratings, site documentation, and more, all in the context of the dynamic URAR. It’s 5 hours of CE designed specifically for licensed appraisers making the transition.
And don’t forget! Register for the “Navigating UAD 3.6” AI clinic on June 30 or July 2 to learn how to put these resources to work even faster with AI tools. Register now.
