Lenders are now using AI to value your home. And when Fannie Mae's model is confident enough in what it sees, you don't need a human appraiser at all.
That's the idea behind value acceptance, which most buyers still call an appraisal waiver. It can cut one of the longest waits out of your closing timeline without adding a single extra step to your file. Here's how the AI behind it works, when you actually qualify, and what it means for how fast you get to the closing table.
How AI Actually Values Your Home
A traditional appraisal means a licensed professional visits your home, pulls comparable sales, and writes up a formal opinion of value. An AI appraisal skips that visit entirely. Instead of sending someone out, the model pulls data that already exists: sales history, tax records, recent comparable transactions nearby, square footage, age, and other property characteristics. It builds a valuation from what it finds.
Fannie Mae's version of this is called Collateral Underwriter, or CU. It's a machine learning model built on historical appraisal data from properties all over the country. CU was originally designed to review appraisal quality and flag potential issues, not to replace appraisers. But the data it's accumulated over time is exactly what Fannie Mae now uses to decide if your property needs a human appraiser at all.
When your lender submits your loan casefile to Desktop Underwriter (DU), that check runs automatically. DU looks at the collateral data Fannie Mae already has on your specific property: prior appraisals, comps, market data. If the model's confident the submitted value holds up, it returns a value acceptance offer with your loan findings. The whole thing takes seconds. No human reviews your file for this step. If the data's there, you get the offer. If it's not, you don't.
What Is a Fannie Mae Appraisal Waiver (Now Called Value Acceptance)?
Fannie Mae officially retired the term "appraisal waiver" in September 2025. It's now called value acceptance. The core idea is the same: DU is telling your lender it'll accept the submitted property value without requiring a traditional in-person appraisal.
When that offer comes through, your lender doesn't need to schedule an appraiser, wait for an inspection, or hold your file while a report gets written and reviewed. There's no form to request it and no way to apply for it separately. Either DU offers it on your specific file or it doesn't.
It's worth knowing more broadly why lenders can sometimes skip the appraisal, but value acceptance is the most common route for Conventional purchase loans today.
How DU Decides If Your File Qualifies
Nobody can force DU to offer value acceptance. You can't request it, and your lender can't override it. The system decides on its own when it reviews your casefile. The main thing it's checking is whether Fannie Mae already has solid collateral data on your property, specifically prior appraisal data that supports the value your lender submitted.
Several things can rule you out automatically:
- The DU value acceptance offer is more than four months old on the note date
- Any lender uploaded an appraisal for the same property to the Uniform Collateral Data Portal (UCDP) within the prior 120 days
- Your loan profile changed after DU ran in a way that shifts the risk assessment
- Your lender orders a traditional appraisal anyway, which voids the value acceptance offer entirely
That 120-day UCDP window trips up buyers more than almost anything else on that list. If a prior deal on the same home fell through and the previous lender had already ordered an appraisal, that data's sitting in UCDP. DU sees it and won't extend value acceptance. It's a real friction point on homes that were previously under contract. Worth asking your lender about early.
Value Acceptance + Property Data: The Faster Middle Ground
DU sometimes offers a middle option instead of full value acceptance: value acceptance + property data. A trained data collector visits your home to capture measurements, photos, and condition notes. They're not giving an opinion of value. They're gathering structured inputs that feed directly into Fannie Mae's model, giving the AI more to work with before DU validates the submitted number.
This option costs less and moves faster than a traditional appraisal. It typically shows up when Fannie Mae has some collateral history on your property but not quite enough to skip the visit entirely. Either way, you're not waiting on a licensed appraiser's schedule or a written report, and that's where most of the time savings live.
Which Loans and Properties Are Eligible
The eligibility rules expanded in early 2025. For purchase loans on primary residences and second homes, value acceptance is now available up to 90 percent LTV, up from 80 percent. If you're putting less than 20 percent down, that change matters. You could qualify for something that wasn't available before.
The value acceptance + property data tier can reach standard LTV limits depending on the loan type. There's also a specific carve-out for buyers in FHFA-designated rural high-needs census tracts, where value acceptance may be available up to 97 percent LTV if your income is at or below the area median.
Investment properties, condos, manufactured homes, and properties in unusual or rural markets are tougher to get approved on. DU can still extend value acceptance there, but it's less common. If your property falls outside the standard single-family box, ask your lender to run DU and see what comes back. Don't assume either way.
Want to Know If Your File Gets Value Acceptance?
Value acceptance is determined when your lender runs DU. If you're shopping lenders, ask them to pull your DU findings and tell you directly whether value acceptance was offered on your file. We'll give you a straight answer.
Schedule a CallHow an Appraisal Waiver Actually Speeds Up Closing
A traditional appraisal has three moving parts: scheduling the visit, the inspection itself, and waiting on the written report. Combined, that's typically seven to fourteen days. In a hot market, longer. When sellers are comparing offers that are otherwise close, closing timeline is a real differentiator. That two-week window can cost you the deal.
Value acceptance removes all three steps at once. Your lender goes straight into underwriting without waiting on a third party. How long underwriting takes becomes the main variable, and that process moves a lot faster when there's nothing stacking up in front of it.
What to Do If DU Doesn't Offer It
Not getting the offer doesn't mean you're stuck. It means a traditional appraisal is required, and the clock shifts to how fast you can get one scheduled. Some lenders have appraiser relationships that move quickly. Others are working from general queues that can stretch two weeks just to get on the calendar in a busy market.
Freddie Mac has a parallel program worth knowing about: Automated Collateral Evaluation (ACE), which runs through Loan Product Advisor instead of DU. If your loan is going through Freddie rather than Fannie, ask your lender to check ACE eligibility. Same principle, same question worth asking.
AI tools are also showing up in traditional appraisals now. Appraisers have access to automated valuation data and market analytics as inputs to their work. The human still provides the licensed opinion of value. That part hasn't changed. But the data side is getting more automated across the board, and value acceptance is where that shift is most visible to you as a buyer.
If your lender hears "no value acceptance" and just says "we'll have to wait," that tells you something about how they handle the rest of your file, too.
If you've been stuck waiting on a lender that can't deliver, we've closed deals in as little as 4 days from first inquiry to clear to close. See how fast we move or give us a call.
Individual results may vary. Closing timelines depend on factors including appraisal, title, inspection, and borrower circumstances. 14 Days To Close does not guarantee a specific closing date.
