When the Comps Don’t Agree: Pricing Complex and Unusual Properties

Some homes are easy to compare.

A relatively typical house in an established subdivision may have several recent sales nearby with similar size, age, condition, design, and site characteristics. The individual properties will never be identical, but the market evidence may still tell a fairly consistent story.

Other properties are not that simple.

A custom home may have very few similar sales. An acreage property may compete with homes across a much larger geographic area. A heavily renovated house may be surrounded by properties in substantially different condition. Accessory dwellings, large workshops, unusual architecture, extensive outdoor improvements, or atypical floor plans can make direct comparisons difficult.

In these situations, the problem is not always a lack of comparable sales.

Sometimes there are plenty of sales.

They just do not agree.

A Comparable Sale Is More Than a Nearby Sale

Location matters in residential real estate, which is why nearby sales are usually an important place to begin.

But proximity alone does not make a property comparable.

Consider a recently renovated custom home on several acres. A sale half a mile away may be similar in size but sit on a small subdivision lot and have dated interior finishes. Another property three miles away may have similar acreage and quality but be significantly larger. A third sale may closely resemble the subject in design and condition but have sold several months earlier.

None is a perfect match.

The valuation problem becomes determining which characteristics buyers are most likely to recognize and how much weight each sale deserves.

For an unusual property, that question can be more important than simply identifying the three closest transactions.

Complex Properties Often Have Several Different “Stories”

One reason difficult properties can produce very different value opinions is that reasonable comparable sales may emphasize different aspects of the home.

One sale may be the best location match.

Another may be most similar in size.

Another may provide the strongest comparison for condition and renovations.

Another may have similar acreage, outbuildings, or overall utility.

If those properties sold at noticeably different price levels, the analysis can quickly become more complicated.

Simply averaging the sale prices usually does not solve the problem. Each sale needs to be considered in the context of its differences from the property being valued.

This is particularly common with custom homes, acreage properties, unusual floor plans, major accessory improvements, significant renovations, and neighborhoods with relatively little turnover. These are also among the situations identified in our pre-listing research as stronger candidates for additional valuation analysis.

Sometimes the Search Needs to Expand

When nearby sales are highly dissimilar, it may be necessary to look beyond the immediate neighborhood.

That does not mean location suddenly becomes unimportant.

It means the search is trying to identify properties that better reflect the subject's actual market position.

For example, buyers considering a distinctive custom home on acreage may not limit their search to one subdivision or a very small radius. Their alternatives could include properties in several nearby communities offering similar land, privacy, quality, design, or amenities.

In that situation, a somewhat more distant sale may provide useful evidence that a closer but fundamentally different property does not.

Time can present a similar issue.

Recent sales are generally desirable because they reflect current market conditions. But in a market segment with very little turnover, an older sale with highly similar characteristics may still provide meaningful context when considered alongside more recent evidence.

The goal is not to expand the search simply to find a sale that supports a preferred conclusion.

It is to understand where the property actually competes and locate the most relevant available evidence.

Renovations Can Make Comparisons Even Harder

Major renovations create another common complication.

A seller may have substantially remodeled a kitchen, updated bathrooms, replaced major systems, added finished living space, built an outdoor living area, or completed a whole-house renovation.

Those improvements may clearly make the property more desirable.

What is less obvious is how much additional value the market recognizes.

The amount spent on an improvement does not automatically equal its contribution to market value. A $100,000 renovation does not necessarily increase a home's value by $100,000.

The better question is how buyers appear to respond to similar improvements when choosing among competing properties.

Sometimes comparable sales provide a clear answer.

Sometimes they do not.

When renovated and unrenovated properties are mixed together in the available sales, condition and quality can become an important part of understanding why otherwise similar homes sold at different prices. The project research specifically identifies renovations whose market reaction is unclear as another reason a property may require closer valuation analysis.

Adjustments Do Not Turn a Poor Comparable Into a Good One

Adjustments are an important part of appraisal analysis, but they are not a substitute for thoughtful comparable selection.

A sale may differ from the subject in size, condition, acreage, basement finish, garage capacity, quality, or other meaningful characteristics. An appraiser may analyze those differences and make appropriate adjustments when supported by market evidence.

But there is a limit to what adjustments can accomplish.

If a property differs substantially from the subject in nearly every meaningful way, making a long series of adjustments does not necessarily transform it into strong market evidence.

Comparable selection comes first.

The objective is generally to begin with sales that reflect as many of the subject's important market characteristics as reasonably possible and then analyze the differences that remain.

For complex properties, that often requires more judgment than simply searching within a predetermined distance and sorting by sale date.

The Goal Is Not to Find a Perfect Comparable

Perfect comparable sales are rare.

Even in very homogeneous neighborhoods, properties differ in condition, updates, lot position, finished area, views, landscaping, and numerous other details.

With unusual properties, those differences simply become more pronounced.

The goal is therefore not to find an identical property.

It is to assemble enough relevant market evidence to understand how buyers are likely to view the subject relative to the alternatives available to them.

That may require several different sales, with each providing insight into a different part of the valuation problem.

The final conclusion comes from reconciling those pieces of evidence rather than expecting one sale to provide the entire answer.

When Additional Valuation Analysis May Help

For an experienced agent, a CMA may still provide a strong pricing framework for many unusual properties.

But there are situations where the comparable-sale story remains difficult to reconcile even after a thoughtful market analysis.

Perhaps two reasonable groups of sales suggest materially different values. Maybe the closest homes are poor physical matches, while the best physical matches are farther away. Significant renovations may be difficult to measure. Acreage or accessory improvements may distinguish the property from nearly everything that has sold nearby.

Those are the kinds of assignments where an independent appraisal can sometimes provide another useful perspective.

The purpose is not to manufacture certainty where the market itself is uncertain.

It is to examine the competing evidence, identify which differences appear most meaningful, and develop a supported opinion of value from the available data.

Our earlier research describes complex and thin-comparable listings—including acreage, custom design, unusual layouts, accessory improvements, mixed-condition sales, and sparse turnover—as a particularly relevant area for agent-facing private appraisal work.

A Practical Way to Think About It

When the comparable sales do not agree, the question is usually not:

Which sale is closest?

It is:

Which sales best reflect the way the market would view this property?

Sometimes that answer is obvious.

Sometimes several imperfect sales have to be considered together.

And sometimes the difficulty of answering that question is itself a sign that the property deserves a closer valuation analysis before an important pricing decision is made.

Trusted Values is the public brand of Real Estate Appraisal Services, Inc. If you are working with a residential property where the comparable-sale story is unusually difficult to reconcile, we are happy to discuss the assignment and whether a private appraisal may be appropriate.