Defining the Market: Where a Property Competes

Section objectives — Upon completion of this section, the learner will be able to:

1. Define a property’s market area as the competitive space in which it competes for buyers, and apply a structured six-step process to establish that area for any property.
2. Explain the principle of substitution and apply it to determine whether a candidate property belongs in a subject’s competitive set.
3. Distinguish price, cost and market value, and identify what the market establishes and what the broker produces.
4. Distinguish ownership interest and property type from architectural style in determining what is being compared.
5. Explain the principles of value that govern the market’s behavior, and apply the four tests of highest and best use to identify whether a listing is being priced as what it is or as what it could be.

A price a broker supports ordinarily rests on one determination made before any figure is calculated: where the property actually competes. That determination shapes what follows. The comparable sales selected, the adjustments applied to them, the range presented to a seller, and whether that range is supported when the property is appraised all trace back to how the market area was defined at the start. When the market area is well defined, each later step stands on firm ground. When it is poorly defined, the later steps generally inherit the flaw, however carefully they are performed.

The determination that precedes the calculation

In practice, market analysis is often approached through a tool rather than through a question. The MLS makes it fast to draw a radius around a subject property, or to set a filter to the municipal boundary, and to treat whatever falls inside as the market. The result has the appearance of rigor: a defined set of properties, a range, a number to present.

The difficulty is structural. A radius is a circle drawn for convenience, and it was not created to describe where a property competes for buyers. It sweeps in properties across a highway that the sales may place in a different market area, while cutting out genuine competitors that fall just outside the ring. A municipal filter begins in the right place, because a CMA ordinarily draws its comparable sales from the subject’s own town: a neighboring town has its own taxes, services and assessment, so its sales reflect that town’s market. Its weakness is the assumption that the town is one market. It seldom is: a single municipality routinely contains more than one market area, divided by features such as a highway, a parkway, a rail line or a price tier, and the market areas inside the town are drawn where the data places them. A buyer may consider more than one town when house-hunting; that is buyer behavior, and the comparable sales still come from the subject’s town. Staying in the town is the default; the search leaves it only as the exception, when the property’s buyers would consider only properties of its own kind, such as an antique home or a log home, and the town has no sales of that kind that serve as good substitutes.

When the market area is built on a shortcut, the consequence does not stay contained to that one step. Comparables drawn from a convenience boundary, the adjustments made against them, and the range built on them generally carry the shortcut’s distortions forward. Defining the market correctly is therefore the first discipline in pricing, and the one that carries the most weight. It begins by replacing the geographic question with a competitive one.

Where the market is, and is not

The method turns on a distinction that runs through the whole of pricing: a market area is not where a property is located. A market area is where a property competes.

Location describes where a property physically sits. Competition describes where it stands in the evaluation of the buyers who would consider it. The two are not the same, and the distance between them is where pricing errors live. Two houses a short distance apart can sit in different market areas when a boundary the data confirms, such as a highway or a parkway, runs between them. Two houses on the same street, by contrast, are in the same market area even when one is renovated and the other is in original condition: they may appeal to different buyers and sell at different price levels, and the analysis adjusts for that condition difference rather than treating the two as separate markets. The operative question is not simply “what is near this property?” It is “what would a buyer of this property seriously weigh as an alternative to it?”

A working definition applies to any property, of any type, in any market:

A market area is the geographic and competitive space in which a property attracts similar buyers and competes with similar alternatives.

The definition deliberately refuses the conveniences. It does not say “the town,” “a half-mile radius,” or “the ZIP code,” because a town usually holds more than one market area, and a radius or a ZIP code cuts across the boundaries the data confirms. It is built instead around buyers and alternatives, because that is what a price ultimately answers to.

What it costs when the market area is wrong

A poorly defined market area does not fail loudly. An analysis built on the wrong market area can be fully populated, with comparables, adjustments and a finished range, and still be inaccurate, because it measured the property against the wrong competition. The errors are quiet, and they compound.

The data no longer describes a single competitive position. When the area is drawn too broadly, the analysis absorbs sales from a competitive position the subject does not occupy. Those sales pull the range toward a figure the subject’s actual market does not support.

The range loses coherence. When the comparables do not form a genuine competitive group, their adjusted figures do not converge. A wide, scattered range is usually the signal that the underlying sales were not true alternatives, not that the property’s price is genuinely uncertain. A tight range comes from a coherent market area.

The price may not be supported when the property is appraised. When a buyer finances, the lender lends on the property’s market value, which the market establishes through the sales in the subject’s genuine competition. When a price was set against the wrong market, the sales may not support it, the appraised value may fall short of the contract price, and the parties may be left with a gap to cover, a price to renegotiate, or a contract that does not close. The office may see the consequence as an expired listing, a renegotiated contract, or a seller’s complaint, and each can trace to the same root.

The correction is generally the same: define the market by genuine competition rather than by a convenient boundary.

Application

A CMA is prepared for a 1,750-square-foot colonial on a quarter-acre lot on an interior street. The search was set to the municipal boundary and a one-mile radius, and it returned nine closed sales. Three are colonials of similar size on neighboring streets that closed between $455,000 and $478,000. Two are larger houses on half-acre lots on the far side of the state highway, closed at $540,000 and $562,000. One backs to a commercial plaza and closed at $412,000. The remaining three are attached townhouses in a development at the edge of the radius, closed between $365,000 and $390,000. The adjusted sale prices run from $410,000 to $545,000, and the recommended list price sits near the middle.

Reading the nine sales against the subject takes a few minutes. The three neighboring colonials form a coherent group, and their prices converge. The two larger houses on half-acre lots across the highway occupy a different competitive position, at a price tier the sales place above the subject. The sale backing to the plaza sits in a different setting that the market prices separately. The townhouses are attached units in a development, and their sales show a different price level; whether they are condominium units is checked in the deed, and either way they are not the subject’s competition. Six of nine sales were returned by the search tool rather than selected, and the width of the range is the evidence of that.

The flaw is not in the arithmetic. It is in where the search began: the streets where houses of this size, on lots of this size, in this condition, actually sell are where the search should have started, and a range built from those sales is one the market’s evidence supports. The explanation to the seller is the same in different words, and it is shorter for the same reason.

Summary

A market area is the geographic and competitive space in which a property attracts similar buyers and competes with similar alternatives. It is defined by competition, not by location, and the shortcuts that stand in for it, a radius, a ZIP code, or a town treated as a single market, describe convenience rather than the buyer’s choice. A CMA ordinarily draws its comparable sales from the subject’s town, because a neighboring town has its own taxes, services and assessment, so its sales reflect that town’s market; within the town, the market-area boundaries are confirmed by data. When a market area is drawn incorrectly the failure is quiet: the range widens, the sales stop converging, and the price may not be supported when the property is appraised. The first question in any CMA is therefore where the search looked, and why.