The Wholesale Flip: the margins can be mapped (and we know the signal)
Bottom line: when a probate home sells low and resells within months at a markup, the gap is the wholesale spread — and it is visible in the record. It is not random: it widens as the price falls and concentrates in a short list of ZIP codes, so it maps. And because the best flips are bought before probate is even filed, the high-margin ones can be found before the spread is taken — if you are reading the right signal.
A quick flip leaves a clean fingerprint in the public record: one property sold twice in close succession, the second sale higher than the first. We scanned every parcel in our sale history for that pattern and kept the residential resales that hold up — 45 clean chains, about $2.1 million in combined spread, at a median markup near 40%.
The shape: the cheaper the home, the wider the gap
Sort the flips by what the middle buyer paid to enter — the discounted purchase from the estate — and the percentage spread climbs as that entry price falls. Below $50,000, the resale typically doubles the buy. The dollar gap runs the other way: a more expensive home turns a larger check even at a thinner percentage.
A buyer chasing return on capital wants the bottom of the chart — a $25,000 gap on a $22,000 house is a different business than an $88,000 gap on a $230,000 one. Both are in the data; they are not the same trade.
The map: where the spread is widest
Place each resale on its ZIP code and the geography is plain. The widest margins land in north county — Jennings, Florissant, Overland — where homes enter in the $20,000s to $50,000s and resell at markups of 90% and up. The mid- and west-county ZIPs appear too, but as a different deal: higher entry, thinner percentage, larger dollars.
These ten ZIPs hold roughly four in five of the clean flips. The pattern matches the rest of this series: the wholesale spread lives at the bottom of the market, and the bottom of the market, in St. Louis County, has an address in the north.
Speed narrows the spread
Faster is not fatter. The instant double-closes — resold inside two weeks — take the thinnest cut, a median near 36%. The wider markups belong to homes held a few months before reselling, which most likely reflect a light rehab rather than a pure pass-through: value added, not just spread captured. The clean wholesale signal is the quick turn — risk control, not the bigger payday.
Two lanes, not one
Split the same flips into the north-county affordable ring and everywhere else, and the two businesses separate cleanly.
| Lane | Flips | Median entry | Median markup | Median spread |
|---|---|---|---|---|
| North-county ring | 21 | $40,000 | 63% | $25,900 |
| Rest of county | 24 | $131,500 | 38% | $51,200 |
Half the flips, and the widest percentage spreads, sit in the ring — at a third of the entry price. That is the high-return, low-capital lane. The rest of the county is the larger-dollar, higher-capital one. Which is the opportunity depends on the capital and the model the buyer brings.
The signal: finding the high-margin flip before it happens
The margin is not a mystery after the fact — it is right there in the double sale, and it clusters. We already showed where it is widest: a short list of north-county ZIP codes. So the question is not whether the spread exists or where — it is whether you can be early to it.
You can, because of when these deals fire. Of the probate flips we can date, 32 of 35 were bought before the probate case was filed. The discounted sale happens in the quiet window after a death and before the estate formally opens — not in the courtroom.
That is the whole signal, and it is three moves: know the high-margin ZIPs (the map above); work the pre-probate leads early — the deaths, before a case exists — to reach the seller first; and read the probate filing the moment it posts to move on the ones already in motion. Find the home in the right ZIP, in that window, and you are looking at the high-margin opportunity before the spread is taken — not reading about it after.
What to do with this
- Choose your lane before your ZIP. The north ring is the high-percentage, low-capital game; the mid-county ZIPs are the larger-dollar one. They reward different buyers.
- Win on the door, not the dollar. The only edge earlier than the open market is the estate itself — the pre-probate death, and the filing the moment it posts.
- Sign up for Pro for the pre-probate leads. Reaching the seller before the filing is the edge above — the pre-probate leads and skip-traced owner contacts that make it workable are in our Pro tier.
Sources: St. Louis County property records and Missouri Case.net filings, on a snapshot taken June 20, 2026. A flip is one parcel sold twice within a year, the second sale higher; we set aside commercial and multi-estate parcels and a few teardowns, leaving 45 residential resales. Per-ZIP and per-timing counts are single digits — read them as direction, not a rate. Two limits stated plainly: the record names a parcel's current owner, not every party in the chain, so we measure the spread reliably but cannot always name the middle party who took it; and our sale history covers under a third of the estates we track, so 45 is a floor that fills in, not changes shape, as coverage grows. This is a pattern we observe, not a prevalence rate we claim.