Millions of Americans make 5x leveraged bets on their homes
Data: Unison Home Price Volatility Index; Chart: Andrew Witherspoon/Axios
You wouldn't make a 5x leveraged bet on the S&P 500 — not unless you were an extremely sophisticated financial arbitrageur, or a reckless gambler.
Even then you wouldn't put substantially all of your net worth into such a bet. Stocks are just too volatile. But millions of Americans make 5x leveraged bets on their homes — that's what it means to borrow 80% of the value of the house and put just 20% down.
By the numbers: Unison, a housing-finance startup, has crunched U.S. house-price data in a paper to be released tomorrow. Over the long run, any given home is likely to experience price volatility of about 15% per year; during the height of the crisis, that number spiked to more than 35%. That's broadly in line with the kind of volatility you see in the stock market.
Unison's results are in line with public data from the Federal Housing Finance Agency, which show annualized house-price volatility, over the past 10 years, ranging from 12% in Alaska to 17% in Hawaii, New York, and the District of Columbia.
Be smart: Annualized house price volatility is much greater than the amount you can expect a home to rise in value over the long term. That number is closer to about 4%. While homes are much less volatile than individual stocks, they're just as volatile as the kind of diversified stock indices most people invest in.
The bottom line: Any given home has roughly a 30% chance of ending up being worth less in five years' time than it is today. If you can't afford that to happen, you probably shouldn't buy.
