Hybrid, Desktop and Bifurcated Appraisals: Where Technology Fits

A hybrid appraisal lands in your queue. Somebody else walked the house last Tuesday. You have a property data report, 40 photos, a floor plan drawn by an app, and the borrower's note that the "basement is finished." You've never stood in the kitchen. This is the work technology has opened up, and it's growing. Here is how hybrid, desktop and bifurcated appraisals work at Fannie Mae and Freddie Mac in 2026, how UAD 3.6 reports them, and where software helps and where it can hurt.

Key takeaways

• Desktop: no current inspection for the appraisal; you rely on data sources. Fannie Mae limits it to certain one-unit purchase loans.
• Hybrid: a trained, vetted third party collects interior and exterior data; you rely on it to form your opinion.
• Bifurcated: the industry's umbrella word for splitting data collection from analysis.
• Value acceptance + property data is not an appraisal at all: a collector visits, and the lender's value is accepted.
• Under UAD 3.6, one dynamic URAR covers these scopes, and the compliance rules check that your inspection and certification line up.

The four scopes side by side

Every row except the last still needs an appraiser's analysis, adjustments, reconciliation and signature.

Desktop appraisals

Eligibility at Fannie Mae

Fannie Mae's Selling Guide B4-1.2-02 allows a desktop appraisal when the loan is:

• a one-unit property (including those with an ADU and units in a PUD),
• a principal residence,
• a purchase (including new construction),
• at or below 90% LTV, and
• a DU casefile with an Approve/Eligible recommendation.

All refinances, second homes, investment properties, two- to four-unit properties, condo and co-op units, manufactured homes and manually underwritten loans are out.

Freddie Mac offers desktop appraisals on eligible purchase transactions where Loan Product Advisor returns a feedback message saying the loan qualifies. Its fact sheet describes the scope as relying on data sources instead of an in-person inspection.

What the guide says about your data

A few points in the Fannie Mae guide every desktop appraiser should know:

• A floor plan is required in addition to the usual exhibits. ANSI Z765 measurement isn't required for desktops, but it's encouraged when feasible.
• Virtual inspection methods, including photos or video, and machine-generated floor plans can supplement the data.
• Information from the borrower, homeowner or another interested party has to be verified with a disinterested source.
• Extraordinary assumptions and "subject to" appraisals are not permitted.
• The lender remains responsible for the accuracy of the property data, including condition and quality ratings.

Watch out: "No extraordinary assumptions" cuts both ways. If you can't support the condition of the interior from the data you have, the desktop scope may not be credible for that assignment. That's a scope-of-work decision under USPAP, and it's yours.

Hybrid appraisals

How a hybrid comes about

At Fannie Mae, DU issues a message when a loan is eligible for an appraisal on the hybrid scope. The hybrid section of the Selling Guide also allows a hybrid when a loan loses value acceptance + property data eligibility after the data collection is submitted. In other words, the collector was already in the house, so the appraiser can work from that collection.

Eligible: existing one-unit properties (including condo and PUD units) and some others, on purchases, limited cash-out refinances and cash-out refinances. Ineligible: two- to four-unit properties, co-ops, manufactured homes, proposed construction, construction-to-permanent, HomeStyle Renovation, manually underwritten loans, and DU Ineligible loans.

Minimum scope

The appraiser must consider interior and exterior data collected by a trained and vetted third party, and relies on it (and other sources as needed) to identify property characteristics, including condition. The collection follows the Uniform Property Dataset and goes to Fannie Mae's Property Data API. Data collection and the appraisal are separate assignments and can be done by different people. If you didn't collect it, the lender has to share it with you at engagement.

You also report who collected it. Fannie Mae's workforce categories are Appraiser, AppraiserTrainee, RealEstateAgent, HomeInspector, InsInspector and Other.

At Freddie Mac, the hybrid is reported on Form 70H with the completed property data report as an addendum, and the collector identified in the report. Freddie Mac's chief appraiser Q&A says the appraiser must be permitted to contact the property data collector to verify information in the PDR.

Reading a property data report like an appraiser

The collector is your eyes. Treat their work the way you'd treat a comp you didn't verify yourself.

1. Check the photos against the data. If the PDR says C3 and the bathroom photo shows a 1970s vanity and water staining, ask.
2. Check the floor plan against public record and the listing. A 400 sq ft gap is a question, not a rounding error. See ANSI Z765 and GLA under UAD 3.6.
3. Look for what's missing. No photo of the mechanicals, no photo of the basement, no exterior of the rear. Ask for it.
4. Call the collector when something doesn't add up. Freddie Mac explicitly allows it. Note the call in your workfile.
5. Decide if the scope is still credible. If the data can't support a credible opinion, say so to the client.

Bifurcated appraisals: the word and the idea

"Bifurcated" is the industry's word for splitting an appraisal in two: data collection by one person, analysis by another. Fannie Mae's hybrid is a bifurcated model. So, in a sense, is a trainee who inspects while the supervisor signs, though that's a different arrangement with its own rules.

The idea behind it is capacity. An appraiser who doesn't drive to every inspection can complete more reports in a day, which matters in rural areas and in busy seasons. Freddie Mac makes the same point in its overview of property data collection: appraisers can complete hybrids from a PDR without a visit, which eases pressure on appraiser capacity.

The cost is distance. You lose the smell of the basement, the sound of the highway, the way the lot drains. Good bifurcated work makes up for that with better data and better questions. It's a different skill, not a lesser one.

How UAD 3.6 reports these scopes

The old system used separate forms, including the 1004, its Desktop and Hybrid versions, and the 2055 exterior-only. The redesigned URAR replaces them with one dynamic report that expands or contracts by property type, loan type and scope. Fannie Mae's desktop guide notes that lenders using UAD 3.6 must follow its UAD 3.6 Policy Supplement. For the bigger picture of the change, see the UAD 3.6 complete guide.

In the UAD 3.6 MISMO schema, the appraiser's exterior and interior inspection methods are each reported with one of three values: Physical, Virtual or No Inspection. When a property data collector was used, their exterior and interior inspection methods are reported too. The Appendix H-1 compliance rules check this. A few examples:

• UAD1558 and UAD1559 (Fatal): provide the manner in which the exterior and interior inspection was conducted by the appraiser and/or supervisory appraiser.
• UAD1521 and UAD1522 (Fatal): provide the manner in which the property data collector conducted the exterior and interior inspection.
• UAD1516 to UAD1518 (Warning): the appraiser certification (#10) does not align with the appraiser subject property inspection.
• UAD1676 (Fatal): indicate whether a sketch or floor plan has been included in the appraisal.

That certification check is worth slowing down for. On a desktop or hybrid, it's easy to leave a certification that reads like a full interior inspection. Under UAD 3.6 the data has to agree with itself. More on how those rules work in the 728 UAD 3.6 compliance rules.

Where technology helps, and where it doesn't

Helps:

• Parcel and tax-roll data filled in so you start from the record, then verify against the collector's report.
• A sketch tool that recalculates GLA when you correct a machine-generated floor plan.
• Maps (location, flood, aerial, plat) generated from coordinates, which matter more when you didn't drive the street.
• Rules checking that catches a certification or inspection-method mismatch before the lender's portal does.
• Your own past reports in the area, so you know what that subdivision's houses actually look like inside.

Doesn't help:

• An AVM number shown to you before you've done the analysis. On a desktop, the temptation to lean on it is strongest.
• Generated commentary. On a reduced-inspection scope, your explanation of what you relied on, and why it's enough, is the most important text in the report.

The broader view of which automation belongs in appraisal software is in AI appraisal software in 2026. And if you're wondering whether these scopes are the first step toward no appraisers at all, read will AI replace appraisers.

A short workflow for a hybrid assignment

1. Accept only after you've seen the property data report and decided the scope can be credible.
2. Start the report from the parcel record and the collector's data; correct anything that disagrees.
3. Review every photo against the UAD photo categories; request anything missing.
4. Fix the floor plan and confirm GLA.
5. Report your own inspection method honestly (No Inspection, if you never visited) and the collector's method separately.
6. Explain your reliance on the third-party data in your scope and commentary.
7. Run the compliance checks, fix every Fatal, and read every Warning.
8. Sign only what you can defend.

Carat builds the redesigned URAR for these scopes, with smart auto-fill from parcel data, a Z765 sketch, generated maps and AI-powered readiness checks against the H-1 rules. It never signs or submits for you. If that's the kind of tool you want, you can start here.