Not every home appraisal involves an appraiser walking through your living room. Some are done from the curb. Others happen entirely from a desk, with nobody visiting at all. So if you’re buying, refinancing, or settling a legal matter, knowing the types of home appraisals, and which one applies to you, tells you a lot about what you’re paying for and how much weight the result can carry.
- What separates a full, exterior-only, and desktop appraisal
- When a lender is likely to order each one
- Why the familiar form numbers are about to disappear in 2026
What the Three Types of Home Appraisals Actually Mean
The difference comes down to one question: how much of the property does the appraiser actually see? That scope drives everything else, including cost, turnaround, and how confident anyone can be in the final number. Three scopes cover most situations, so let’s take them in order, from the most thorough to the lightest.
The Full Appraisal: Inside and Out
This is the one most people picture. First, the appraiser visits the property, inspects the exterior, and walks the interior room by room. We measure, photograph, note condition and quality, and flag anything that affects value. On the legacy forms, this is the 1004 for a single-family home.
A full appraisal carries the most weight, because the appraiser has seen the property firsthand. So for higher-stakes work, like an estate settlement, a divorce, or a property tax appeal, this is usually the scope you want. There is no data gap for anyone to poke at later.
The Exterior-Only Appraisal: A Look From the Curb
An exterior-only appraisal, sometimes called a drive-by, is what it sounds like. The appraiser views and photographs the outside of the home but does not go inside. For the interior, we rely on other sources, such as prior listings, public records, and whatever reliable data exists. On the legacy forms, this is the 2055.
It is faster and cheaper than a full appraisal. Still, there’s a trade-off. Without eyes on the interior, the appraiser cannot confirm condition, updates, or problems behind the front door. So lenders tend to reserve it for lower-risk situations, not for a purchase where the inside is a mystery.
The Desktop Appraisal: No Visit at All
A desktop appraisal goes one step further. The appraiser never visits the property. Instead, the whole analysis runs on data: MLS records, public records, and a floor plan that shows the interior walls. A licensed or certified appraiser still develops the opinion of value and signs the report, so it is a real appraisal, not an automated computer estimate.
Fannie Mae made desktop appraisals a permanent option back in March 2022, mainly for certain one-unit purchase loans. Their guidelines require a floor plan, not just an exterior sketch, so the appraiser can judge how the home actually functions. One rule is worth knowing: if a desktop appraiser ends up visiting and inspecting the property, it stops being a desktop and becomes a full appraisal. The scope defines the product, not the intention.
The three side by side
| Scope | Interior seen? | Exterior seen? | Legacy form | Typical use |
|---|---|---|---|---|
| Full | Yes, in person | Yes, in person | 1004 | Purchases, high-stakes valuations |
| Exterior-only | No (from data) | Yes, in person | 2055 | Lower-risk refinances |
| Desktop | No (data + floor plan) | No (from data) | 1004 Desktop | Certain low-risk purchase and refi loans |
One more option sits alongside these: the hybrid, where a trained third party collects the property data and the appraiser does the analysis from it. Still, the principle is the same. The less the appraiser sees in person, the more the result leans on someone else’s data.
Which One Will You Get?
For most home purchases, expect a full appraisal. It is the standard, and it gives the lender the most complete picture. By contrast, exterior-only and desktop appraisals show up more often in refinances and lower-risk loans, where the lender’s automated system signals that a lighter scope is acceptable.
Usually you don’t choose. The lender’s system decides what’s eligible. But you can ask which scope is being used, and it pays to ask. If you’re ordering an appraisal yourself, outside a loan, for a divorce, an estate, or a Cook County tax appeal, you can request a full interior appraisal. For those purposes, you generally should. After all, a value backed by an actual walkthrough is far harder to challenge.
What’s Changing in 2026
One big shift is landing in 2026, and it reshapes everything above. For example, the form numbers in this article, the 1004, the 2055, the 1004 Desktop, are being retired. Fannie Mae and Freddie Mac are replacing them with a single, dynamic report called the Uniform Residential Appraisal Report, or URAR, built on a data standard known as UAD 3.6.
Instead of a separate form for each scope, one report now flexes to fit the assignment, whether that’s a full interior inspection, an exterior-only, or a desktop. The timeline is set. In fact, lenders have been able to use the new format since early 2026. By November 2, 2026, it becomes mandatory, so every appraisal on a loan sold to Fannie Mae or Freddie Mac must use UAD 3.6. The old format then retires fully in May 2027. Fannie Mae’s UAD page tracks the details as they firm up.
So the labels are changing, but the underlying choice is not. Full, exterior-only, and desktop still describe how much the appraiser sees. That question outlives any form number.
The Form Changes, the Question Doesn’t
Strip away the form numbers and every appraisal answers the same thing: how well does the appraiser actually know this property? For instance, a full interior appraisal answers it with a walkthrough. An exterior-only answers it from the curb. A desktop answers it from data and a floor plan. Each has its place, and each carries a different level of certainty.
So when an appraisal lands on your desk, look past the format and ask what the appraiser was allowed to see. For anything that has to hold up, in court, in a negotiation, or in front of a lender, that scope is the whole ballgame.
Not sure which kind of appraisal your situation needs?
The right scope depends on what’s at stake. For an estate, a divorce, a tax appeal, or a lending decision, talk to PahRoo about the appraisal that will actually hold up.
Request an AppraisalFrequently Asked Questions
What is the difference between a desktop and a full appraisal?
Does a desktop appraiser ever visit the property?
Is an exterior-only appraisal less reliable than a full appraisal?
Which type of appraisal will my lender order?
Are appraisal forms like the 1004 going away?
Need an Appraisal You Can Stand Behind?
As the industry shifts toward lighter, data-only products, the value of an appraiser who has actually seen the property only grows. So at PahRoo, the appraiser who develops the analysis is the one who signs the report. That accountability is the whole point.
PahRoo Appraisal & Consultancy, LLC helps homeowners, attorneys, accountants, bankers, and real estate professionals make confident decisions across the Chicago area. Whether you’re weighing a Cook County tax appeal, settling an estate, removing PMI, or navigating a divorce, our team is ready to help.