What Actually Makes a Housing Market "Hot"? We Scored 900 of Them.

"Hot market" is one of those phrases everyone uses and no one defines. It usually means prices are going up and homes sell fast. Fine, but but that's the symptom. The useful question is what's underneath it, because the same surface heat can sit on a healthy foundation or a shaky one.

LocalAlpha breaks every market into five forces, scores each 0–100, and blends them into one Alpha Score. Two of those forces create the heat. The other three decide whether it lasts. Get that distinction and you can read any market in the country.

Price Momentum is the one everyone watches. Rising prices mean demand is outrunning supply. But momentum is a coincident signal, not a leading one: by the time it's screaming, you may be late. High momentum stacked on weak affordability is the classic late-cycle setup.

Inventory Health is the leverage dial. The cleanest read is months of supply: how long it would take to sell every listed home at the current pace. Under two months and sellers run the table; above six and buyers do. Most of what people feel as "hot" or "cold" is really this number moving.

Affordability is the ceiling. It compares prices to what local households actually earn. A market can run hot for a while on cheap money or out-of-town buyers, but when prices detach from local incomes, the heat is borrowed. Affordability is what tells you whether a hot market has room left.

Economic Strength is the fuel: jobs, wages, unemployment. Demand backed by a growing payroll is durable. Demand backed by speculation is not. Two markets can look identical on price until a downturn separates the one with jobs from the one without.

Rental Yield is the investor's floor, meaning annual rent relative to price. High yield means the math works even if appreciation stalls. It's the dimension homebuyers ignore and investors live by.

Line that up against the momentum bars and the order inverts. Madison, the strongest price momentum in this piece, has the weakest yield of the four at 3.5%, a full 3.1 points under the cost of borrowing. Cape Coral, which nobody is calling hot, comes within 0.9 of covering its financing on rent alone. Heat and the rent that would justify it are not the same reading, and this is the chart where they come apart.

Here is the part most "hot market" lists miss. Momentum and inventory create the heat. Affordability and the economy decide whether it lasts. A market with rocketing prices, no inventory, and stretched affordability is hot the way a sprinter is fast — impressively, briefly. A market with steady jobs, room on affordability, and balanced supply can stay strong for years without ever looking dramatic.

That's why the Alpha Score isn't just price momentum with extra steps. A market can post strong momentum and still score in the middle, because the other forces are flashing caution.

Austin spent two years as the national symbol of a hot market. Here's where it lands today:

Read the bars and the story tells itself: momentum has cooled and supply has loosened (inventory health is low), while affordability actually sits middling, since payments still land under the 30% line. The heat came off not because Austin stopped being a good city, but because supply caught up: months of supply climbed back toward balanced and prices fell more than 20% from their 2022 peak, even with a still-solid local economy.

Now compare Madison, Wisconsin, a market almost nobody calls "hot":

Madison's price momentum is actually strong, stronger than Austin's. But it's the less affordable of the two (price-to-income above 5, payments past 30% of income), and that ceiling caps how hot it can run, so it sits balanced. Same country, opposite shapes: Austin cooled from the top on loosening supply; Madison is pinned by its affordability ceiling. Neither story is visible from price alone.

The Alpha Score is a weighted blend: Inventory Health (25%), Price Momentum (20%), Affordability (20%), Economic Strength (20%), and Rental Yield (15%). Each dimension is ranked against peer markets of the same type, so a ZIP is compared to ZIPs, not to a whole metro. Where a market has no real data for a dimension, the score uses a neutral 50 rather than guessing. The full weighting is set out at the foot of this piece.

So next time someone calls a market "hot," the useful follow-up is: hot on which force, and can it last? The answer is almost always sitting right there in the five bars.

P.S. The bar I misread for the longest time was Economic Strength. A neutral 50 looks like a verdict and is usually an absence, and I have talked myself into markets on the strength of a number that was really a shrug.

Methodology: the five forces are the Alpha Score dimensions (Price Momentum, Inventory Health, Affordability, Economic Strength and Rental Yield), weighted as described on the methodology page. Figures are per Redfin (prices, supply), Census ACS (income, rent) and BLS (jobs, wages). Score cards and charts are snapshots as of the date each one states, not live reads.