Counterpoint - the house itself is an investment. If he pays it off, he's now growing his asset (or losing) as the value of the house changes. Paying off the house does NOT take it out of the picture as an investment.
So I submit its still better to own the house free and clear, letting the investment of the house gain value over time (and over enough time, real estate always grows in value) and then take the money that would have gone to interest payments and invest that at 6% or better.
Chuck,
I've spent the larger part of the past few years dabbling in this exact topic. A house is
never an investment: a fundementally illiquid asset that is irrationally priced and subject to appreciation controls that stand outside the normal metrics of any true investment.
Yes, houses can and do appreciate over time. Yes, you can buy a house today and have it be worth triple the value in the future. But, that value is based on no rational metric - GDP, inflation, cost of labor, revenue, etcetera.
If you have a nut of money - say, 20% of the value of a $500k home - you are far better investing that money in a semi-liquid investment portfolio balanced to your risk appetite and renting a property at the interest-portion of your proposed purchase.
Example:
$500k house, 20% down, $100k nut of cash, 30 year loan, 5.5% interest, interest payment in the first 10 years of the loan
averages (range $1880 to $1516) $1689/month. If I rent a place for less than $1700 a month, plow the $100k into a diversified portfolio, and then plow the excess in each month, and I assume an extremely conservative 6% compounding annual growth rate, at the end of 10 years I have $273k in my portfolio, diversified and (if I'm smart) appropriately hedged against risk.
In the house, I have "earned" $169k in equity before I adjust for the local market. Depending on how and where I bought my house, that may or may not grow. And, worse yet, I paid $202k for the privilige of that money. If I can rent for less in that timeframe, I will
always end up ahead, and have assets in my portfolio that are far more risk-diverse and more liquid.
Home ownership is a lifestyle choice. It is not an investment; however it is the primary method of saving that most middle class (less than $300k per annum total compensation) will leverage in their lifetimes. If you are reasonably liquid to begin with (a great deal of cash on hand), real estate makes a fine addition to any portfolio and can help with diversification issues. In fact, a friend just bought a nice penthouse in NYC for a song (a lifestyle choice) that will dovetail nicely into the rest of his investment portfolio. However, as a primary method of investment, it's not very good, and one can always do better with far more liquidity and far less risk. Yes, there are tax benefits to owning a home. But many investment vehicles have their own intrinsic tax and liquidity benefits; but you'll need to speak with a tax attorney and a very, very competent accountant to learn about that.
Cheers,
-Andrew