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In my current line of work (residential real property appraisal) we do analysis on prior sales and transfers for the home we are appraising for three years and any homes we use as comparable sales for one year. We’ve been trying to figure out the instant buyer model, as it appears they overpay on a relatively frequent basis. It’s been particularly noticeable over the last 6 months. Prior to that the profit margin appeared to be there, at least in the purchase and subsequent sale prices, most of the time. Lately it’s been more frequent to see the I-buyer going upside down in the deal.

Of course, there are other profit mechanisms in play that don’t show up in recorded sale prices. But still, it seemed unsustainable.

From the perspective of appraisers, the i-buyers add fluidity to the market which is good for us. Whether the market is going up or down, our business is good when houses change ownership. It’s when the market gets stuck that it’s bad for us.

The AI approach to the market works when it works and doesn’t when it doesn’t. Like all algorithms, accounting for exceptions to normal assumptions is the trick.

I read a book recently called Thinking Fast and Slow”. It talks about the two systems in human thinking: the autonomous one that can drive a car across town in busy traffic almost by itself while we daydream, and the other one that recalculates when unfamiliar patterns occur. They work together almost seamlessly. It seems this is the future of AI. Figure out when the pattern changes and kick in a different system.

Zillow learned this the hard way.

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