GUY RAZ, host:

Some market watchers say that's still true. But not Barry Ritholtz. He is the author of the book "Bailout Nation." And he says the problem, at least for the near-term, is simple: There are too many unsold homes on the market.

Mr. BARRY RITHOLTZ (Author, "Bailout Nation"): In a typical, normal housing cycle, in any given time, this four, five, six months supply of housing available, we're now running well in excess of double that over 12 months of supply and that's just the homes that we know about that are currently listed for sale. There's a huge overhang of what we call shadow inventory, which are homes that are either owned by the banks and not put on the market or that speculators and investors had purchased and they're not defaulting on them yet, they're still carrying.

But, you know, the classic line that stockbrokers say, home investors have been saying, which is, dear God, just let me get to break even and I'll dump this dog.

RAZ: Barry Ritholtz, it is, or at least until recently, has been an article of faith in this country that your home was the best and safest investment you could make. You know, it's foolproof, right? Do you believe that will still be the case in the coming decades?

Mr. RITHOLTZ: Well, first, it really depends on what you pay for a home. I'm a big fan of saying there's no such thing as toxic assets; only toxic prices. But the current environment is just so different than the previous two or three decades. If you look at the factors that were driving home prices from 1970 to 2000, they don't exist going forward. So the sort of appreciation that we saw in the '80s and '90s, that's not likely to come back anytime soon.

RAZ: So you're saying that period of time was an aberration, that this idea that you should always pay more than you can afford, your house is always going to increase in value, that was based on a belief of something that happened in just 20 or 25 years?

Mr. RITHOLTZ: Yes. You stop for a moment and think about what the environment was like in that period of time. First, you have the baby boom generation, born between let's call it '46 and '60. In the '80s and '90s, they were in the prime home-buying age. And that pig is through the python. That demographic bulge doesn't exist.

And then in addition to that, you have these massive tailwinds of mortgage rates that had entered a 20-year decrease. The cost of credit and the availability of credit had gotten increasingly beneficial to real estate buyers. Go back to the mortgage rates of 1980, they were 17.5 percent. You could go out and get a 30-year mortgage right now, today, at four-and-three-eighths.

These are just unprecedented, unconscionable numbers and there's really very little room for them to go any further. They're likely, over the next 10 to 20 years, to go higher. And that creates a headwind to potential real estate appreciation.

RAZ: Barry, house prices are down presumably, mortgage rates are incredibly low, is this a good time to buy?

Mr. RITHOLTZ: You know, I never have a hard time buying an asset class if you can get a desirable property at the right price. And that's the key. The problem is people have a real fear of buying an asset that's in free fall. And I think the worst of the housing drop is likely behind us. But by my metrics, we're 10 to 15 percent above fair value.

So assuming we only drop to fair value, there's still some downside going forward over the next, let's call it eight-quarters. But if you could get a good price on a property that you're okay living in for five to 10 years, if you're not afraid to negotiate and if you're not afraid to walk away from a house rather than overpay for it as a buyer, there's plenty of opportunities, you just have to be very selective and wait for the sellers to find religion.

RAZ: That's Barry Ritholtz. He's the author of "Bailout Nation." He also blogs about the economy at The Big Picture.

Barry Ritholtz, thank you so much.

Mr. RITHOLTZ: Thanks for having me. Transcript provided by NPR, Copyright NPR.

NPR transcripts are created on a rush deadline by an NPR contractor. This text may not be in its final form and may be updated or revised in the future. Accuracy and availability may vary. The authoritative record of NPR’s programming is the audio record.