July 11, 2026 · 5 min read
The 18-Year Cycle Says 2026. Here Is What the Data Says.
Hoyt traced 18-year land peaks to 1836. Harrison called 1990 and 2008, and now names 2026. The theory, the skeptics, and June's Puget Sound numbers.
In 1933, an economist named Homer Hoyt published One Hundred Years of Land Values in Chicago, a decade-by-decade reconstruction of one city's land market. Buried in his tables was a rhythm: land prices had peaked at intervals of roughly eighteen years, a pattern he traced back to 1836. Hoyt was not selling a newsletter. He was documenting what a century of records in one city appeared to show.
The dates that cycle proponents recite from that lineage run 1836, 1854, 1872, 1890, 1908, 1926. Then wars and price controls scramble the record for several decades, and, by the proponents' own account, the sequence picks back up in the modern era: 1973, 1990, 2008. Add eighteen and you get the year on everyone's calendar.
Harrison's record, and his 2026 call
Fred Harrison, a British economist, built on Hoyt in his 1983 book The Power in the Land. His track record is the reason this theory refuses to die quietly. He called the 1990 top in advance. He called the 2008 top in advance, years before it arrived. He has now specifically predicted a peak in 2026.
The theory behind the calls is not numerology, at least not to its adherents. The claimed mechanism runs through land and credit: an expansion begins, rents and land values absorb a growing share of the economy's gains, banks lend against those rising values, speculation feeds on the lending, and eventually the price of land outruns what production can support. Credit contracts, and the cycle resets. Eighteen years, in this telling, is simply how long that build-and-break has tended to take in modern economies.
Phil Anderson, an Australian analyst working the same tradition, puts the window at 2026 to 2028. Notably, as of March 2026 Anderson had not confirmed a top. The theory's own practitioners are not unanimous that the moment has arrived.
The claims travel faster than the caveats. One property blog ran Harrison's forecast under a headline announcing a 2026 "land crash," pairing it with Warren Buffett's retreat from real estate. That word is their characterization, not ours, and the gap between the headline's confidence and the underlying record is worth noticing.
What the skeptics say
Eighteen is not magic. Take the skeptics seriously, because their case is real.
Start with the sample. The full sequence contains roughly ten peaks across nearly two centuries. Ten observations is a thin base for any pattern, and the intervals are not uniform: even sympathizers argue over whether the true period is 18 years or 18.6.
Then there is survivorship in the pattern itself. The sequence was assembled looking backward, and the decades where it fails, the 1930s through the 1960s, are excused as exceptions caused by war and price controls. A theory that counts its hits and grants itself exemptions for its misses is hard to falsify.
Finally, each documented peak had its own visible cause. Canal-boom speculation in 1836. Railroad overbuilding in the 1870s. Loose savings-and-loan credit into 1990. Subprime securitization into 2008. Skeptics argue the cycle is not a clock but a family resemblance: credit expands, land absorbs the gains, credit contracts. That can rhyme every couple of decades without owing anyone a 2026 appointment.
What Puget Sound looks like right now
Set the theory aside and look at observations. The NWMLS June 2026 report gives us these, and they are reported here as facts, not forecasts.
Average days on market reached 51, five days longer than a year earlier. Months of supply sat at 2.9 in King County and 3.37 across the NWMLS footprint, call it 2.9 to 3.4 months. King County's median residential price was $889,000, down 2.7 percent year over year. Active listings hit 7,405, up 16.9 percent.
That is what a negotiating market looks like: more choices, more days, more leverage shifting toward buyers. It neither confirms Harrison's calendar nor refutes it. A softening spring shows up in plenty of years that were not tops, and this region has cooled ahead of the nation before without the nation following it down. Tops are only ever visible in the rearview mirror. The broader macro dials are similarly undramatic right now, and similarly unresolved; we walk through them in the un-inversion post.
Review, not panic
Here is the honest position. If Harrison is right a third consecutive time, the owners who fare best will be the ones who already knew their numbers before the turn. If he is wrong, those same owners lost nothing: knowing your equity, your net proceeds, and your return on equity costs an afternoon and is useful in every market. Preparation is the rare bet that pays under both outcomes. That is the whole case, and it is why cycles argue for reviewing your position, not for panic.
Notice what that framing does not require. It does not require believing Harrison, doubting him, or timing anything. Owners who reviewed their position in 2005 and decided to hold anyway were not wrong to review. The review is the point; the market's verdict comes later either way.
The review starts with a more personal question than anything in Hoyt's tables: where are you in your real estate journey? The market has a cycle. So do you. Only one of them is knowable. And when the headlines feel loud, remember the line that anchors this whole series: uncertainty is not a forecast; it is a reason to know your own position precisely.
Questions worth sitting with
- If the 18-year cycle is right this third time, what would you want to have already done? And if it is wrong, what did preparing cost you?
- Where are you in your real estate journey?
If a Property Brief letter reached your mailbox, go to sellerradar.io/d and enter the code from the letter to see your own numbers, or ask the Pellego Sale Planning Team to walk through them with you.
Seller Radar analyzes public-record, property, ownership, and market data to help real-estate professionals identify likely seller opportunities earlier.