There are only two ways to price a house wrong, and they cost money in opposite directions.
Price it too low and the loss is invisible. The house sells in eleven days, everyone congratulates you, and you never learn what the second and third buyers would have paid.
Price it too high and the loss is visible, but it arrives slowly. The listing goes quiet after three weeks. You reduce. It goes quiet again. By month four you are negotiating from obvious weakness, against buyers who can see exactly how long you have been sitting there. Those properties rarely recover their price; they sell for less than they would have fetched had they been priced correctly on day one.
We recently completed a full comparative market analysis on a 1979 bungalow in Saint-Jérôme. What follows is the method and, more usefully, the places where it nearly went wrong.
The overpricing penalty is measurable
Standing inventory of detached bungalows in Saint-Jérôme is asking 32% more than the market actually pays. Pull three registers for one property type in one city and the pattern is immediate.
| Register | Properties | Median price |
|---|---|---|
| Sold | 282 | $529,000 |
| Expired or withdrawn | 56 | $599,000 |
| Currently listed | 25 | $699,000 |
The failed listings sit between the two, exactly where you would expect them: not absurd, just optimistic.
The more instructive exercise is to find properties that appear in both the expired and sold registers. Same house, two attempts. The gap between the price that failed and the price that worked ran from 6.5% to 26.6%. The worst case asked over $700,000, expired, and eventually sold for roughly $190,000 less.
That house did not lose $190,000 of value in a year. It spent a year teaching the market that something was wrong with it. A stale listing becomes its own negative disclosure.
The market will tell you its discount, if you ask
The most useful number almost nobody calculates is the ratio of sale price to asking price for comparable properties nearby.
Across four recent sales in the subject’s sector, that ratio came out at 96.0%, 95.2%, 96.0% and 96.0%. Four transactions, three price bands, five months apart, and a total spread under one percentage point. That is not coincidence; it is a market convention. Buyers in that pocket negotiate about 4%, and sensibly priced sellers concede it.
The list price therefore stops being a judgment call and becomes arithmetic:
Target sale price $500,000 ÷ 0.958 = $521,900
List at $519,000 to $525,000
It also retires the most common piece of seller logic: “let’s add a bit so we have room to negotiate.” Asking more does not buy a bigger concession. It buys a reduction, followed by the same 4% off a number you have already damaged.
Now the part that matters most: indexing
A comparable sale is a photograph of the market on the day it closed. Value a house today against a sale from five months ago and you are comparing it to a five-month-old market. So you index: restate each comparable in today’s dollars using a measured rate of local price change.
A market rising 3% a year moves roughly 0.247% a month. A comparable that sold for $500,000 five months ago indexes to:
$500,000 × (1.00247)5 = $506,200
Six thousand dollars on one comparable. Across five or six comparables, inside a 4% negotiating band, that is not a rounding error. It is the difference between a correct price and a slow spring.
Index to the area, not the country
National figures are useless for your street. Provincial is better, city better still. But you can over-correct, and that error is more dangerous because it feels more rigorous.
Our first draft relied on an automated valuation report showing prices in the subject’s postal code down 10.9% year over year. It was wrong. Published figures for Saint-Jérôme showed the median single-family price up 5%, with an average of 32 days on market; provincially the median was up 3%. Rising inventory and softer volumes described a normalizing market, not a falling one. The postal-code “decline” was a small-sample artifact: a dozen transactions in a quarter, one unusual sale, and the figure swings.
Correcting that single input moved the valuation by roughly $18,000. Same comparables, same adjustments, same house.
The rule: index to the smallest geography that still has enough transactions to be statistically stable. For most Quebec municipalities, that is the city or the regional board area. A postal code is almost never large enough. A country is never small enough.
Beware the elegant coincidence
Two near-identical bungalows on the same street, same vintage, size and lot, sold four months apart for $500,000 and $480,000. Indexed, they collapsed to within $920 of each other. A perfect exhibit.
It was a coincidence. The earlier house carried a $7,000 higher assessment, an extra above-grade bedroom, better flooring, and all-electric heat; the other ran on oil at $700 a year. The $20,000 gap was the houses, not the calendar. We pulled the exhibit. The data point that most elegantly confirms your thesis deserves the most scrutiny, not the least.
Adjust with local rates, not a borrowed rate card
Most brokerages use an adjustment grid: so much per square foot, so much for a garage or a finished basement. Ours had been calibrated for $700,000–$900,000 homes. Applied to a $500,000 bungalow, its square-footage rate claimed more than twice the share of value it should have.
The better approach is to extract adjustments from the data in front of you. With 282 local sales, we could measure directly what this town pays for a garage:
Median with a garage: $565,500
Median without: $495,000
Difference: $70,500
That figure came from the same buyers who will bid on your house, which makes it worth more than anything on a printed sheet.
The assessment roll is a tax document, not a valuation
Two houses on the subject’s street were assessed within $600 of each other. One sold at 157% of its assessment; a comparable nearby sold at 110%. The roll is struck on a fixed reference date and tracks renovations poorly; one of those houses had been rebuilt top to bottom since. Use the roll to know your taxes. Distrust any analysis that uses sale-to-assessment as a valuation shortcut.
Measure. Do not assume.
Three small details moved the number more than they should have:
- Square footage. The automated model said about 1,039 sq ft. The surveyor’s certificate of location gave 8.00 m × 12.26 m, or 1,056 sq ft. A measured figure beats a modelled one every time.
- Units convention. Quebec listings write “25,11” to mean 25 feet 11 inches, not 25.11 feet. Read as a decimal, one comparable came out 29 sq ft too small, and the error flowed straight into the adjustment grid.
- The documents. The tax bill revealed a local improvement levy for aqueduct and paving work of close to $900 a year, nearly a quarter of the municipal bill, which transfers to the buyer rather than being prorated at the notary. The twenty-year-old certificate of location showed a shed sitting closer to the lot line than the by-law allows.
None were deal-breakers. All are better found by the listing broker in September than by the buyer’s notary in December.
Time on market is a segment statistic
The city’s published average was 32 days. Our six comparables sold in 32, 45, 69, 70, 83 and 86 days. Older stock without a garage simply moves more slowly; that is the segment, not a pricing failure.
A seller told to expect 32 days who is still waiting at day 60 starts deciding out of anxiety. A seller told to expect 75 to 90 days holds the line. Setting expectations is part of pricing, arguably the part that preserves the most money.
What good pricing actually looks like
Strip away the spreadsheets and the method is four moves:
- Find real comparables as close to the property as possible. One excellent comparable on the same street beats five mediocre ones across town.
- Index each one to today using a rate of change measured for your city or region, from a sample large enough to be stable.
- Adjust with rates extracted from local sales, not a template built for another market.
- Set the list price from the local sale-to-list ratio, and the timeline from the segment’s actual days on market.
Then state plainly what is still unknown. This file closed with three open items: the remaining term on the street levy, the bedroom rating of the septic installation, and a new certificate of location. Each carried a dollar range and a named party responsible.
A seller who is told what remains unresolved trusts the parts that are settled. That is worth more than a confident number.
Thinking about selling? A properly built market analysis takes a few days, and it is the highest-return few days in the entire transaction. Contact us and we will walk you through ours.