Months of Supply, DOM & List-to-Sale: The 3 Numbers That Win a Listing Appointment
Three market numbers decide whether a seller trusts your price the moment you say it. Here is what each one actually measures, the thresholds that matter, and how to deliver the verdict in 30 seconds at the kitchen table.
The three numbers, in plain English
Months of supply is how long it would take to sell every active listing at the current sales pace, assuming nothing new comes on. Two months means inventory clears in roughly two months. It is the cleanest single read on who has leverage: sellers when supply is tight, buyers when it stacks up.
Days on market (DOM) is how long a listing sits before it goes pending. It tells you how fast correctly priced homes are actually moving in a specific price band, which is the number a seller secretly cares about most. Watch the methodology, though: median DOM and average DOM diverge, and some feeds reset the clock when a listing relists or changes price.
List-to-sale ratio is the final sale price divided by the last list price. At 100 percent, homes sell at ask. Above 100 percent signals competitive bidding; below 100 percent means buyers are negotiating down and your pricing strategy has to account for it. Together these three answer the only question a seller is really asking: what will my house actually sell for, and how fast.
Thresholds matter, but the current number matters more
The rough rule of thumb most agents carry: under about three months of supply leans seller-favorable, roughly four to six months is balanced, and above six months tilts toward buyers. Falling DOM and list-to-sale at or above 100 percent reinforce a seller's market; rising DOM and ratios drifting below 100 percent reinforce a buyer's market. Treat these as orientation, not gospel.
The trap is quoting a number you remember from last quarter. Western Washington markets move fast and unevenly, and rate swings can flip a band's momentum in weeks. A figure that was true in winter can be stale by spring. Walking into a listing appointment with a remembered stat is how you get corrected by a seller who checked a portal that morning, which is the fastest way to lose the room.
Pull the source-dated number before every appointment. Ask SENTINEL for the latest available months of supply, DOM, and sold-above-list percentage for the exact ZIP and price band, then check the effective period and source before repeating it to a client.
Quote the price band and ZIP, not the county average
A countywide median is almost useless at a kitchen table. King County blends Medina and Auburn into one number that describes neither. The seller in front of you does not live in the county average; they live in one ZIP, in one price band, in one property type.
Months of supply for entry-level condos and months of supply for high-end detached homes in the same ZIP can point in opposite directions. So can DOM between a starter band and a luxury band a few miles apart. When you quote a granular figure, you sound like the specialist who knows their farm; when you quote a county average, you sound like everyone else who pulled it off a headline.
Anchor the conversation to their segment. Neighborhood market pages for King, Snohomish, and Pierce are a starting frame, but narrow to the seller's ZIP and band before you state a verdict.
The 30-second kitchen-table delivery
Sellers do not want a market lecture. They want a verdict, the evidence behind it, and what it means for their price. Deliver it in that order and you keep control of the appointment.
Try this shape: "Your ZIP is sitting at about X months of supply right now, homes in your price band are going pending in roughly Y days, and sellers are getting close to Z percent of list. That tells me we should price at [strategy], and here is why." Three numbers, one conclusion, then you stop talking and let the data carry the room.
If the seller pushes back with a number from a national headline, you redirect to their segment without flinching, because you pulled the granular figure before you walked in. That is the difference between defending a price and having a seller defend it for you.
Use source-dated numbers, and never present a stale one as current
Freshness is the whole game. The instant you quote a figure as current, you are vouching for it, and a stale months-of-supply number is worse than no number because it can mislead the pricing decision. If you cannot confirm the source and effective period, frame the figure as historical or leave it out.
Cite the source and the as-of date. Knowing whether a feed uses median or average DOM, and whether it counts relists, is the kind of detail that separates a number you can stand behind from one that gets you corrected. SENTINEL's methodology page lays out exactly how its market figures are computed and where they come from, so you are never quoting a black box to a client.
Build the habit: refresh before every appointment, quote the ZIP and band, attach the source. Do that and these three numbers stop being trivia and start winning listings.
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Frequently asked
- What is a good months of supply for a seller in Washington?
- As a rough guide, under about three months of supply tends to favor sellers, four to six months is roughly balanced, and above six months leans toward buyers. These are orientation thresholds, not fixed lines. Pull the current figure for the specific ZIP and price band before advising a client, since the number moves and varies sharply by segment.
- Is days on market or list-to-sale ratio more important when pricing a listing?
- They answer different questions, so use both. Days on market tells you how fast correctly priced homes are moving; list-to-sale ratio tells you whether buyers are paying at, above, or below ask. A short DOM with a list-to-sale ratio at or above 100 percent points to aggressive pricing room; a long DOM with ratios below 100 percent argues for a more conservative number.
- Why should agents use source-dated market data instead of a remembered figure?
- Western Washington markets shift quickly. Before repeating a figure, retrieve the latest supported observation, check its source and effective period, and call it historical when it is outside the freshness boundary.
- Should I quote countywide market numbers or ZIP-level numbers at a listing appointment?
- Quote the seller's ZIP and price band. A county average blends very different submarkets into one figure that describes none of them accurately. Months of supply and days on market can point in opposite directions for different price bands in the same ZIP, so a granular number is both more accurate and more credible to the seller.