When an Estate Property Has No Good Comparable Sales: What Happens Next?
"There haven't been any similar homes sold nearby. How can an appraiser determine the estate property's value without good comparable sales?"
It is a concern that can arise in estate appraisal assignments, particularly when the property is unusual or the local real estate market has been quiet.
Perhaps the home sits on an oversized lot.
Perhaps it has been extensively renovated.
Perhaps it is considerably larger than surrounding properties.
Or perhaps very few properties changed hands around the required valuation date.
At first glance, the problem seems obvious:
If there are no perfect comparable sales, how can the appraiser develop a reliable opinion of market value?
The answer begins with an important distinction.
Appraisers do not necessarily need identical sales.
They need sufficient relevant market evidence to understand how buyers would likely have viewed the subject property on the effective valuation date.
When ideal comparables are unavailable, the appraisal process does not simply stop.
But the analysis often becomes more challenging—and professional judgment becomes considerably more important.
Perfect Comparable Sales Rarely Exist
In residential appraisal, the ideal comparable would be nearly identical to the subject property.
Same neighbourhood.
Same property type.
Similar living area.
Similar lot.
Similar condition.
Similar renovations.
And sold very close to the effective valuation date.
Occasionally, the market provides exactly that.
Often, it doesn't.
The appraiser therefore needs to identify the best available evidence and analyze the differences between those properties and the subject.
That is one of the reasons residential appraisal involves more than simply finding the three closest sales.
A Common Estate Scenario
Consider a hypothetical example.
An estate property is located in an established GTA neighbourhood.
Most surrounding homes contain approximately 2,000 to 2,500 square feet.
The estate property, however, contains approximately 3,500 square feet, sits on a much larger lot and has several unusual improvements.
The required effective valuation date is the owner's date of death eight months earlier.
The appraiser researches the immediate neighbourhood.
Several properties sold around that date—but none closely resemble the subject.
One has a similar lot but a much smaller house.
Another has a similar living area but is located in a superior neighbourhood.
A third is physically similar but sold considerably later.
Which one should the appraiser use?
Potentially, all three may provide useful evidence—but for different reasons.
Comparable Doesn't Mean Identical
This distinction is important.
A comparable sale is not necessarily a duplicate of the subject property.
Instead, it is a transaction that provides meaningful evidence about how the market values characteristics relevant to the subject.
For example, one sale may help demonstrate how purchasers reacted to larger homes.
Another may provide evidence regarding oversized lots.
Another may be particularly useful because it sold close to the effective valuation date.
The appraiser's task is to determine which differences are relevant and how those differences influence the comparison.
The Search Area May Need to Expand
When good comparables cannot be found within the immediate neighbourhood, the appraiser may need to look farther away.
That does not mean simply searching randomly across the GTA.
The expanded area should still make sense from a market perspective.
The appraiser may consider other neighbourhoods that purchasers might reasonably view as alternatives to the subject property's location.
Questions can include:
Are the neighbourhoods similar in overall market appeal?
Do they contain comparable housing stock?
Are school districts or amenities materially different?
Are lot sizes similar?
Are buyers shopping in both areas?
Are there meaningful location premiums or discounts?
A comparable several kilometres away may sometimes provide better evidence than the house next door if the nearby property is fundamentally different from the subject.
The Search Period May Also Need to Expand
Sometimes location is not the problem.
Timing is.
Suppose very few properties sold around the owner's date of death.
The appraiser may need to consider transactions occurring farther before or after the effective valuation date.
That introduces another question:
Did market conditions change during that period?
If the market remained relatively stable, an older transaction may still provide useful evidence.
If the market changed rapidly, however, timing differences may require much greater consideration.
This becomes particularly important in the GTA, where buyer demand, inventory and financing conditions can sometimes change significantly within relatively short periods.
Older Sales Aren't Automatically Bad Comparables
Clients sometimes assume that the newest sale must always be the best sale.
That is not necessarily true.
Imagine the subject is a unique custom home.
A highly similar property sold nine months before the effective valuation date.
Another property sold only one month before—but it is substantially smaller, differently renovated and located on an inferior lot.
The older transaction may provide valuable information despite the time difference.
The appraiser needs to weigh similarity against timing, rather than applying a simple rule that newer is always better.
Sales After the Effective Date May Also Provide Evidence
A similar issue arises with transactions occurring after the date of death.
Suppose the required valuation date is March 15.
A highly comparable property sells on April 20.
That sale may provide useful evidence, depending on the circumstances.
The appraiser would need to consider whether the transaction reflected market conditions around the effective date and whether anything significant changed between the two dates.
The important question is not simply:
"Did this sale occur before or after the valuation date?"
It is:
"What does this transaction tell us about the market that existed on the effective valuation date?"
Adjustments Become Particularly Important
When comparable properties differ from the subject, those differences need to be considered.
Depending on the property and available market evidence, relevant differences may include:
Living area.
Lot size.
Condition.
Renovations.
Basement finish.
Garage facilities.
Location.
Property age.
Quality of construction.
Market timing.
Adjustments are intended to help the appraiser analyze how those differences influence value.
However, adjustments should not simply be arbitrary amounts added or subtracted until the sales produce similar numbers.
They should reflect market evidence and professional judgment.
When the comparable sales require substantial adjustments, the reasoning behind those adjustments becomes especially important.
Sometimes Different Comparables Answer Different Questions
Consider an estate property with an unusually large lot.
There may be no recent sale that matches both the house and the land.
The appraiser might therefore analyze one group of sales that are physically similar to the home and another group that provides evidence about larger lots.
The final analysis then considers the evidence collectively.
This is one reason a difficult property may require more extensive market research than a typical subdivision home.
The answer may not come from one perfect comparable.
It may emerge from several imperfect pieces of market evidence pointing toward a reasonable range of value.
What About the Property's Own Previous Sale?
Sometimes the subject property itself has sold previously.
That transaction can potentially provide useful information.
Suppose the estate property sold three years before the required valuation date.
The appraiser may consider:
Whether the sale was arm's length.
What condition the property was in.
Whether renovations occurred afterward.
How market conditions changed.
Whether the earlier sale was properly exposed to the market.
The previous sale does not automatically establish today's—or the historical effective date's—market value.
But for a unique property with limited comparable evidence, it can become another relevant piece of the valuation puzzle.
Listing History Can Also Provide Context
Not every useful piece of market evidence is a completed sale.
The property's listing history and competing listings may sometimes help provide context about how buyers responded to similar properties.
For example, a property may have:
Been listed substantially above the market.
Remained unsold for several months.
Been terminated and relisted.
Required several price reductions before selling.
This information does not carry the same weight as a completed arm's-length transaction.
But it can help the appraiser understand market behaviour and buyer resistance within a particular price range.
Broad Price-Per-Square-Foot Calculations Can Be Misleading
When good comparable sales are scarce, there can be a temptation to rely heavily on price per square foot.
For example:
"Homes around here sell for $600 per square foot, so a 3,000-square-foot property must be worth $1.8 million."
Residential properties do not necessarily behave that neatly.
Price per square foot can be influenced by:
Lot value.
Property condition.
Location.
Renovations.
Age.
Quality.
Basement characteristics.
Overall property size.
Two homes with the same living area can therefore have substantially different market values.
Price-per-square-foot analysis may provide context, but it should not automatically replace a more comprehensive appraisal analysis.
Difficult Comparables Make Reconciliation More Important
When three highly similar sales all indicate approximately the same value, reconciliation may be relatively straightforward.
When the available comparables are less similar, the appraiser needs to carefully consider the strengths and weaknesses of each transaction.
One sale may require significant location adjustments.
Another may be older.
Another may be smaller but much closer geographically.
The final opinion of value should therefore not simply be an average of the adjusted sale prices.
The appraiser considers which transactions provide the strongest evidence and how much weight each deserves.
This is where professional judgment becomes particularly important.
A Lack of Perfect Comparables Should Be Explained
When an estate property has limited comparable sales, the report should not pretend otherwise.
The appraisal should explain why the search was expanded and why particular transactions were selected.
A well-supported report may discuss:
The scarcity of similar sales.
The geographic area researched.
The time period considered.
Why particular comparables were selected.
Significant differences between the subject and comparables.
Relevant market conditions.
Material adjustments.
Assumptions and limitations.
The reasoning behind the final reconciliation.
The appraisal should also be prepared in accordance with the Canadian Uniform Standards of Professional Appraisal Practice (CUSPAP).
This transparency becomes especially valuable if beneficiaries or professional advisors later question why seemingly distant or older sales were used.
For a related discussion about the importance of the analysis supporting a valuation, our previously published article “What Makes an Appraisal Defensible When the Other Side Disagrees” looks more closely at what can make appraisal evidence easier to understand and defend.
What If a Beneficiary Finds a Different Sale?
This is another common situation.
A beneficiary searches online and identifies a property the appraiser did not use.
They may ask:
"Why didn't the appraiser use this one? It's only two streets away."
That is a reasonable question.
But proximity alone does not establish comparability.
The sale may have occurred under different market conditions.
The property may have been substantially renovated.
Its lot, size or location may be different.
Or the appraiser may have identified other transactions that better reflected the subject property.
The appropriate question is not simply whether another sale exists.
It is whether that transaction provides better market evidence than the sales already analyzed.
This distinction becomes particularly important now that beneficiaries can easily access property information online. In our article “When Beneficiaries Start Comparing HouseSigma, Zillow, and Realtor Estimates to the Estate Appraisal,” we discuss why individual online estimates and nearby sales need to be considered in context rather than treated as automatic proof that an appraisal is incorrect.
Final Thoughts
What happens when an estate property has no good comparable sales?
The appraisal does not necessarily become impossible.
Instead, the assignment often requires a broader and more careful examination of the market.
The appraiser may need to search farther geographically.
The time period may need to expand.
Older or later sales may need to be considered.
Different transactions may provide evidence about different characteristics of the property.
And the final reconciliation may require greater professional judgment.
For estate lawyers, executors and beneficiaries, the important thing to understand is that appraisal reliability does not depend on finding three identical houses.
In many cases, those sales simply do not exist.
The more meaningful question is:
Has the appraiser identified the best available market evidence, appropriately considered the differences, and clearly explained how that evidence supports the final opinion of value?
When comparable sales are scarce, that explanation becomes even more important.
Because in a difficult estate valuation, the strength of the appraisal is not necessarily determined by how closely three properties resemble one another.
It is determined by how convincingly the available market evidence is analyzed, reconciled and connected to the property being valued.
Comments