Understanding Standard and Nonstandard Building Areas in UAD 3.6

The transition to the Uniform Appraisal Dataset 3.6 is more than a new form. It represents a fundamental shift in how appraisal data is structured, analyzed, and communicated. For many appraisers the biggest conceptual change is how building areas are classified. The new report structure requires clear distinctions between standard and non-standard areas both above grade and below grade.

These categories are not simply technical labels. They shape how property characteristics are captured, how comparables are analyzed, and how lenders and secondary market participants interpret living space. The foundation for all of this continues to be the measurement framework established by ANSI Z765.

To work effectively in UAD 3.6 it is essential to understand how these classifications work and why they exist.

Finished Above Grade Standard

Finished Above Grade Standard represents the portion of a property that is fully above ground and functions as typical living space within the home.

To fall into this category the space must meet ANSI requirements. The area must be finished in a manner consistent with the rest of the dwelling. It must be heated and suitable for year round occupancy. It must meet minimum ceiling height standards. It must also be accessible through the interior of the home and function as a natural extension of the main living space.

In the UAD 3.6 structure the system calculates totals by summing all finished above grade standard areas reported at each level.

Finished Above Grade Nonstandard

Finished Above Grade Non Standard areas are still above ground and finished but they do not meet the criteria for standard living areas. This classification exists because not all finished space functions the same way within a home.

Common examples include finished rooms above garages that only have exterior access, accessory studio spaces that are physically connected but function independently, or finished areas that do not fully meet ANSI ceiling height requirements. These spaces can contribute value and utility but they are reported separately from the main above grade areas.

In the UAD 3.6 report these areas remain visible to lenders and reviewers but are kept distinct from standard areas.

Finished Below Grade Standard

Below grade areas are any levels where part of the structure is beneath the surface of the ground. Finished Below Grade Standard refers to basement or lower level space that has been finished in a manner consistent with the rest of the home and meets functional living standards. The space may include family rooms, bedrooms, recreation areas, or offices.

These areas are reported clearly in the building area section of the report. They contribute to the overall utility and market appeal of the property but are kept separate from above grade standard areas.

Finished Below Grade Nonstandard

Finished Below Grade Nonstandard refers to spaces below grade that have been partially improved or that do not meet the same functional standards as primary finished basement areas.

Examples may include partially finished basements, areas with limited ceiling height, or spaces that have been converted for a specialized use that differs from typical residential living areas.

Like other non standard classifications these areas are still reported but separated from the standard finished areas to ensure the data reflects how the space actually functions in the market.

Why These Distinctions Matter

In earlier appraisal reporting formats much of this information was embedded in comments or sketches. UAD 3.6 changes that by requiring structured data that clearly distinguishes between different types of building area.

This structure improves consistency across appraisals. It also allows automated review systems used by organizations such as Fannie Mae and Freddie Mac to better understand the true composition of a property.

Instead of relying on a single square footage number the new dataset captures how each portion of the home contributes to overall value and utility.

The Practical Impact for Appraisers

For practicing appraisers the takeaway is simple. Square footage is no longer just a total. It is a data structure. Each level and each type of space must be classified correctly.

That means measuring carefully, understanding ANSI requirements, and documenting the functional relationship between different areas of the home.

The good news is that modern tools can help streamline this process. The right technology can assist with measurement, classification, and report generation so that appraisers can focus more on analysis and less on repetitive data entry.

A New Opportunity for the Industry

UAD 3.6 represents a major step forward for the appraisal profession. By capturing more precise information about how homes are built and used, the industry is moving toward greater transparency and consistency.

But change also creates friction. Learning new classifications, understanding new workflows, and adapting to structured data reporting takes time. That is exactly why modern appraisal platforms are becoming an essential part of the transition.

See How the Process Can Be Automated

If you want to see how technology can simplify the UAD 3.6 workflow, I invite you to experience it firsthand.

Schedule a live demo of the Aivre platform to see how AI assisted reporting can automatically organize building areas, streamline data entry, and help you produce UAD 3.6 compliant reports faster.

You can also sign up for the free version of the software and begin exploring the tools today. Whether you are preparing for UAD 3.6 adoption or already working within the new reporting structure, the platform is designed to help you work more efficiently and stay ahead of the curve.

Visit Aivre to schedule a demo or create your free account and start building your next appraisal report with confidence.

By Jake Lew

Co-Founder & CEO