What Can Cause an Appraisal to Come in Low? 10 Issues Realtors Should Watch For
Few things make a real estate transaction more stressful than hearing the words: “The appraisal came in low.”
A buyer and seller may have already agreed on a price. The inspections may be complete. The financing may appear to be moving along smoothly. Then the appraisal comes back below the contract price, and suddenly everyone is asking the same question:
“Why?”
A low appraisal does not necessarily mean the property is overpriced, and it does not automatically mean the appraiser made a mistake. An appraisal is an independent opinion of the property's market value—the price the property would most likely sell for in a normal, competitive transaction between a willing buyer and willing seller.
For Realtors, understanding what can influence that opinion can help you identify potential valuation issues before they become a problem.
At Madison Block Appraisals, we work with a wide variety of residential properties throughout Central & Southern Arizona, including conventional homes, new construction, manufactured homes, acreage properties, horse properties, and other properties with characteristics that can make valuation more complicated. Our goal is always to develop a well-supported opinion of value based on the available market evidence—not simply to confirm a contract price.
Here are 10 of the most common factors that can contribute to an appraisal coming in below the purchase price.
1. The Contract Price Is Higher Than What Comparable Sales Support
This is one of the most straightforward reasons an appraisal can come in below the contract price.
When determining market value, an appraiser generally looks closely at comparable sales, often called "comps." Comparable sales are recently sold properties that are similar enough to the subject property to provide useful evidence of what buyers have actually paid for similar homes.
For example, imagine a home is under contract for $450,000.
The agent may believe the home is worth $450,000 based on:
Current competition
The seller's improvements
The amount the seller needs to net
What buyers are willing to offer
An online home-value estimate
The price of similar homes currently listed for sale
However, suppose the most relevant recent sales are generally between $410,000 and $430,000.
That does not automatically mean the appraisal will be $430,000. The appraiser still has to analyze the differences between the properties. But if the available market evidence does not support $450,000, there may not be enough evidence to justify the higher value.
Why this matters to Realtors
A listing price and a contract price are not evidence of market value by themselves.
A listing represents what a seller is asking. A contract represents what one particular buyer agreed to pay. Neither necessarily represents what the broader market would have paid under typical conditions.
Closed sales are particularly important because they show what buyers actually paid.
That is why it can be useful to evaluate potential comparable sales before listing or accepting an offer—not simply after the appraisal has already been ordered.
How Madison Block Appraisals can help
If you're working with a property where the anticipated sales price appears to be significantly above recent comparable sales, Madison Block Appraisals can provide a professional valuation when appropriate for the intended use.
For Realtors, our appraisal services can also be useful when a property has characteristics that make a simple comparison to neighboring homes difficult.
2. The Comparable Sales Aren't Actually as Comparable as They Appear
One of the biggest misconceptions about appraisals is that an appraiser simply finds three houses that look similar and averages their sale prices.
That's not how the process works.
A comparable sale is selected because it provides useful evidence about the market reaction to a property's characteristics. The appraiser considers factors such as:
Location
Lot size
Living area
Age
Quality of construction
Condition
Design
Bedroom and bathroom count
Garage capacity
Pool
Views
Outbuildings
Updates and remodeling
Functional layout
Site characteristics
Other features that buyers may consider important
Two homes can both be 2,000 square feet with three bedrooms and two bathrooms and still have significantly different market values.
For example:
Home A
2,000 square feet
2015 construction
Updated kitchen
Excellent condition
Three-car garage
1-acre lot
Home B
2,000 square feet
1990 construction
Original finishes
Average condition
Two-car garage
0.25-acre lot
Calling these homes "similar" simply because they have the same bedroom count and square footage would overlook several characteristics that could influence what buyers are willing to pay.
Why this matters
An appraiser doesn't necessarily use the three homes with the highest sale prices.
The objective is to identify the most relevant market evidence, even when those sales don't produce the highest possible value.
Fannie Mae's current guidance specifically requires analysis of the closed sales, contract sales, and listings that are most comparable to the property being appraised and emphasizes consideration of factors that affect value.
What Realtors can do
When you provide comparable sales to an appraiser, don't just send the highest-priced sales you can find.
Instead, explain why you believe a particular sale is relevant.
If a sale is especially similar because of its location, lot size, condition, upgrades, or other unusual characteristics, that context can be valuable.
The appraiser will still independently verify and analyze the information, but good market information from the agent can help ensure relevant data isn't overlooked.
3. The Property Has Features That Don't Contribute as Much Value as the Owner Expects
This is particularly important with remodeled and highly upgraded homes.
Homeowners often think about value in terms of cost:
"We spent $80,000 remodeling the kitchen."
That does not necessarily mean the kitchen increased the home's market value by $80,000.
The amount a homeowner spends on an improvement and the amount buyers are willing to pay for that improvement are two different things.
This is an important appraisal concept called contributory value.
Contributory value means the amount a particular feature actually contributes to the overall market value of the property.
For example, a homeowner might spend $50,000 on a high-end kitchen renovation. If competing homes in the area have relatively basic kitchens and buyers aren't willing to pay significantly more for the upgraded kitchen, the improvement may not contribute the entire $50,000 to the home's value.
The same concept applies to:
Swimming pools
Landscaping
Outdoor kitchens
Custom cabinets
High-end appliances
Solar systems
Barns
Shops
Detached garages
Luxury finishes
Elaborate patios
Specialty rooms
This doesn't mean these features have no value.
It means the value needs to be supported by the market.
Why this matters to Realtors
A common mistake is assuming:
Cost of improvement = increase in value.
A better question is:
How much more are buyers actually paying for this feature?
That distinction becomes especially important when you're dealing with a home that has been extensively renovated.
4. The Home's Condition or Quality Is Inferior to the Comparable Sales
Condition matters.
So does quality.
A freshly remodeled home generally should not be compared as though it were identical to a home with original finishes and significant deferred maintenance.
Likewise, a custom home with high-quality construction may not be directly comparable to a basic tract home simply because both have similar square footage.
Deferred maintenance means repairs or maintenance that have been postponed rather than addressed when needed. Examples can include:
Worn flooring
Damaged exterior finishes
Aging roofing
Leaking plumbing
Broken windows
Deteriorated paint
Damaged siding
Missing or damaged fixtures
Other visible maintenance issues
The opposite can also be true: a home that has been extensively updated may be worth more than otherwise similar properties in average condition.
Fannie Mae requires appraisers to consider the overall condition and quality of the property and to report apparent adverse conditions and needed repairs when applicable.
Realtors can help by providing improvement information
If the seller has made significant improvements, make sure the appraiser knows about them.
A simple list can be extremely helpful:
Recent Improvements
New roof — 2024
HVAC replacement — 2023
Kitchen remodeled — 2025
New flooring throughout — 2025
New windows — 2024
Pool resurfaced — 2025
Include dates whenever possible.
Photos, invoices, permits, contractor information, and other documentation can also be useful depending on the situation.
5. The Market Has Changed Since the Comparable Sales Closed
Real estate markets don't stand still.
A comparable sale that closed six months ago may not represent the same market conditions that exist today.
This is particularly important in markets where prices are:
Increasing
Declining
Stabilizing
Experiencing changing inventory
Experiencing significant changes in buyer demand
For example, suppose three comparable homes sold six months ago for approximately $450,000.
Since then, inventory has increased significantly and similar homes are now selling closer to $425,000.
Simply looking at the older $450,000 sales without considering the change in the market could overstate today's value.
The opposite can also happen in an appreciating market.
This is why an appraiser analyzes market conditions, not just sale prices.
Fannie Mae specifically requires analysis of closed sales, contract sales, and current offerings to identify market conditions and changes in sale prices or asking prices.
A useful tip for Realtors
Don't assume that an older sale is irrelevant simply because it's outside the most recent few months.
Likewise, don't assume that the newest sale is automatically the best comparable.
A slightly older sale that is highly similar to the subject property may provide better evidence than a very recent sale that is substantially different.
The key is relevance and market support, not simply the date of the sale.
6. The Property Has a Location Difference That Buyers Care About
Location can have a major impact on value—even when two properties are physically very similar.
Examples include:
Busy roads
Freeway proximity
Railroad tracks
Commercial properties nearby
Industrial uses
Airport influence
Power lines
Significant traffic
Different school boundaries
Views
Waterfront or water influence
Cul-de-sac locations
Rural versus suburban locations
Differences in neighborhood appeal
A buyer may be willing to pay more for a quiet home backing to open space than for an otherwise identical home backing to a busy road.
The important point is that an appraiser isn't simply asking:
"Is this location better?"
The question is:
"Does the market demonstrate that buyers pay more or less because of this location difference?"
That distinction matters.
7. The Property Is Unusual or Difficult to Compare
This is one of the areas where having an experienced appraiser can make a significant difference.
Some properties simply don't have a large pool of directly comparable sales.
Examples include:
Large acreage properties
Horse properties
Homes with extensive outbuildings
Properties with detached workshops
Rural homes
Manufactured homes
Custom homes
Unique architectural designs
Homes with guest houses or accessory dwelling units
Properties with unusual layouts
Properties with significantly larger-than-typical lots
In these situations, the appraiser may need to expand the search area, consider older sales, analyze competing neighborhoods, or use other market evidence to understand how buyers respond to the property's unique characteristics.
Fannie Mae's guidance recognizes that unique properties may require analysis of older comparable sales, competing neighborhoods, similar properties, and other reliable market data when directly comparable recent sales are limited.
This is particularly relevant in rural Arizona
A rural property might have:
5 acres
A private well
Septic system
Horse facilities
Multiple outbuildings
A detached shop
RV parking
Fencing
A manufactured home
A large custom home
Finding another property with all of those characteristics may be impossible.
That doesn't mean the property cannot be appraised.
It means the appraiser has to carefully analyze which characteristics actually influence value and how the market responds to them.
This is one of Madison Block Appraisals' specialties
Madison Block Appraisals has experience with acreage properties, wells, septic systems, horse properties, large outbuildings, manufactured homes, new construction, and other properties that don't always fit neatly into a standard suburban comparison.
If you're a Realtor dealing with a property that is difficult to compare to typical neighborhood homes, having an appraiser who regularly works with these property types can be particularly valuable.
8. The Home Has More Square Footage Than the Comparable Sales—But the Market Doesn't Support a Proportional Increase
This one surprises a lot of homeowners.
A larger home is generally worth more than a smaller home, all else being equal.
But value does not necessarily increase by a fixed dollar amount for every additional square foot.
For example, you cannot necessarily take a $200-per-square-foot figure from one property and multiply it by the subject home's square footage to determine its value.
That is because buyers don't necessarily value every additional square foot equally.
The additional space might be:
An unfinished area
A large bonus room
An oversized garage
A basement
A converted area
An addition with an unusual layout
Space that doesn't function as efficiently as the main living area
The appraiser looks at how the market actually responds to differences in size.
This is particularly important when a home is significantly larger than most properties in its neighborhood.
A 3,500-square-foot home surrounded by 1,800-square-foot homes may not receive the same price per square foot as a typical 1,800-square-foot home.
Why Realtors should pay attention
When pricing a larger or highly customized home, look for comparable sales that are actually similar in size and overall appeal.
A smaller home selling for a high price per square foot does not necessarily establish the same price per square foot for a much larger property.
9. The Property Has an Unusual Layout or Functional Problem
A home can have plenty of square footage and still not be worth as much as the owner expects if the layout doesn't work well for typical buyers.
This is sometimes referred to as functional obsolescence.
In simple terms, functional obsolescence means a property has a design or feature that makes it less useful or desirable than it could otherwise be.
Examples might include:
A bedroom that can only be accessed through another bedroom
Bedrooms located unusually far from the home's only bathroom
A kitchen separated from the primary living areas in a way buyers dislike
Extremely small bedrooms
Excessively large areas that have limited practical use
An unusual floor plan
Poorly designed additions
A garage that is difficult to access
A converted garage that eliminates desirable parking
Not every unusual floor plan negatively affects value.
Some unusual layouts may actually appeal to buyers.
The important question is whether the market demonstrates buyer resistance—meaning buyers are less willing to purchase the property or pay as much for it because of the characteristic.
Fannie Mae's guidance specifically recognizes that unusual layouts can limit market appeal when they create functional inadequacies, while also noting that market acceptance can demonstrate that an unusual feature does not require a negative adjustment.
10. The Property Has Features That Are Difficult to Quantify
Some properties contain features that sound impressive but are difficult to value without looking at the actual market.
Consider a property with:
A 40x60 shop
A horse barn
Four covered horse stalls
A guest casita
A pool
Solar
Extensive landscaping
A detached garage
A private well
Several acres of land
It would be easy to assume that adding up the replacement cost of all those features tells you what the property is worth.
It doesn't.
The appraiser needs to determine how the market responds to those features.
For example, a $100,000 shop may be extremely valuable to a buyer who needs a large workspace. But if most competing buyers don't need or want that feature, the market may not support adding the entire construction cost to the home's value.
This is another reason why unusual properties require careful analysis rather than simply adding up the cost of every improvement.
What About a Comparable That Sold for More Than the Subject's Contract Price?
This is one of the most common questions Realtors ask.
"I found a house that sold for $475,000. Why can't you use that to support my $450,000 contract?"
You absolutely can provide that information to the appraiser.
But the appraiser has to determine whether the sale is actually relevant.
For example, the $475,000 property might have:
A better location
A larger lot
Better condition
More living area
A superior view
A newer construction date
Better-quality construction
A three-car garage instead of a two-car garage
A pool
More extensive remodeling
The sale price alone doesn't tell the entire story.
The appraiser has to compare the differences between the properties and determine whether those differences explain the difference in price.
What If You Disagree With the Appraisal?
A low appraisal isn't necessarily the end of the transaction.
If you believe the appraisal does not adequately reflect the property or the available market data, the appropriate response is to identify specific, material information that may have been overlooked or misunderstood.
For example:
A highly relevant comparable sale wasn't considered
The appraiser was unaware of a significant recent improvement
A comparable was incorrectly described
The property's square footage was reported incorrectly
A feature was omitted or misunderstood
There is additional market evidence that materially changes the analysis
This is different from simply saying:
"The value needs to be higher."
An appraiser's value conclusion needs to be supported by market evidence. Fannie Mae's current guidance also makes clear that a lender should not request a change to the opinion of value simply because the reported value doesn't support the loan amount; concerns should be based on material and substantive issues.
Realtors can play an important role here
If you're submitting additional information for consideration, organize it.
Instead of sending 15 random listings, consider providing:
Comparable Sale #1
Address
Sale date
Sale price
Why you believe it is comparable
Key similarities
Key differences
Recent Improvement Information
Improvement
Completion date
Approximate cost
Supporting documentation, if available
This makes it much easier for the appraiser to understand why the information may be relevant.
It also respects the appraiser's responsibility to independently analyze the information.
*Important Note on Appraisal Revisions and Additional Information*
One important process point that Realtors should always keep in mind is that appraisers typically cannot make changes to a completed report or consider additional information unless it is formally submitted through the lender or appraisal management company (AMC).
Even if a Realtor or agent has helpful data—such as additional comparable sales, correction of property details, or documentation of improvements—the appraiser generally cannot act on that information directly if it is sent informally or outside of the lender’s established process.
In most lending situations, the lender controls the communication channel between the parties and the appraiser. This means that any request for a reconsideration of value, correction, or additional review must be submitted through the lender (or AMC), who then determines whether the information will be forwarded to the appraiser for review.
What this means for Realtors
If you believe there is important information that should be considered after an appraisal has been completed, the correct step is to:
Contact the lender or loan officer first
Ask about their Reconsideration of Value (ROV) process
Submit any supporting documentation through the lender as required
Understanding this process upfront can help avoid delays and ensure that any relevant information is reviewed properly and in accordance with lending guidelines.
What Realtors Can Do Before the Appraisal
The best time to think about appraisal risk is before the appraisal is ordered.
Here are several practical steps you can take.
1. Look beyond the highest sales
Don't build your pricing strategy around the three highest sales in the area.
Look for properties that are genuinely similar.
2. Pay attention to condition
A remodeled home should be compared with other remodeled homes whenever the market provides enough data.
3. Document improvements
Give the appraiser a concise list of significant improvements, including dates and costs when available.
4. Identify unusual features
If the property has acreage, a shop, horse facilities, a guest house, a well, septic, solar, or another unusual feature, make sure the appraiser knows.
5. Don't assume cost equals value
An expensive improvement may add substantial value—or considerably less than its cost.
6. Look at current listings and pending sales
Closed sales tell you what buyers paid. Current listings and pending transactions can provide additional information about current market conditions.
7. Be realistic about the contract price
If the contract price is significantly above recent market evidence, understand that there may be appraisal risk.
8. Choose an appraiser with relevant experience
A complex property deserves an appraiser who is comfortable analyzing complex properties.
The Bottom Line: A Low Appraisal Usually Starts With a Difference Between Price and Market Evidence
An appraisal isn't designed to tell a buyer, seller, Realtor, or lender what a property should be worth based on expectations.
It is an independent opinion of what the property is most likely to sell for in the market, based on the available evidence as of the appraisal's effective date.
That means an appraisal can come in below the contract price for many different reasons:
The contract price is higher than the available market evidence.
The comparable sales aren't truly comparable.
Improvements don't contribute as much value as their cost.
The property's condition or quality is inferior to the comparable sales.
Market conditions have changed.
The location has an adverse influence on value.
The property is unusual or difficult to compare.
The property's size doesn't translate proportionally into value.
The layout creates functional limitations.
Unique features are difficult to quantify without market evidence.
The good news is that many potential appraisal problems can be identified before they become transaction problems.
How Madison Block Appraisals Can Help
At Madison Block Appraisals, we believe a quality appraisal is about more than putting a number on a house.
It's about understanding the property, understanding the market, and explaining how the available evidence supports the final opinion of value.
We work with Realtors, lenders, homeowners, buyers, and investors throughout Pinal and Maricopa Counties, with experience ranging from conventional residential properties to more complex homes and rural properties.
Our experience includes:
Acreage properties
Rural homes
Horse properties
Properties with wells and septic systems
Large shops and outbuildings
Custom and higher-value homes
Condominiums
FHA and conventional lending appraisals
Market value consultations
If you're a Realtor and you're concerned that a property may present appraisal challenges, don't wait until the appraisal comes back to start asking questions. Understanding potential valuation issues early can help you better prepare your seller, set realistic expectations, and reduce surprises later in the transaction.
If you're preparing to list a property, purchasing a home, or simply need an independent opinion of market value, Madison Block Appraisals is here to help.
Serving Pinal and Maricopa Counties, Arizona.
Contact Madison Block Appraisals
This article is provided for general educational purposes and is not intended to provide a specific opinion of value for any individual property. Every appraisal assignment is analyzed based on its intended use, the characteristics of the property, and the available market data.
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