Floating Luxury: At Home ... On The Water

Rollin and Amy Wittington have no complaints about their second home - and why should they? It has a commercial-style kitchen with a big refrigerator and double ovens, five bedrooms and marble baths.

The laundry room "has plenty of working area and all kinds of cabinet space," Rollin says.

From the magnificent to the mundane and the water views, their house isn't exactly on the water - it's in it.

The Wittingtons are living large in a maritime McMansion -- a million-dollar custom-built 2,300-square-foot houseboat in Lake Cumberland, Ky.

"How is it on gas?" asks CBS News correspondent Richard Schlesinger.

"Two gallons per mile, maybe, if you're lucky," Rollin says.

Steve Lochmueller depends on the lucky few who can afford these boats to keep his business afloat. If you want it, he can build it

"We've done atriums, we've done elevators, we've done solar panels," and he says he'd even try a bowling alley if asked.

There is nothing about this industry that's mass market. Just two-tenths of one percent of the people who buy recreational boats buy houseboats, and just a tiny percentage of those people buy the monster mansions.

From the hull on up, each boat is built to suit the owner's taste and is ready to sail in just 12 weeks.

"This is bigger than my apartment in New York, much bigger," says Schlesinger.

"And your apartment in New York probably cost more than this, Richard," Lochmueller replies.

Maybe. Maybe not. But this is still no bargain. The houseboats cost anywhere from $500,000 to $1 million.

It is money well spent, say the Wittingtons, who could probably afford to spend their vacations on the French Riviera ... if only they wanted to.

"So this is sort of your Riviera" asks Schlesinger.

"Yes," Rollin says. "The Cumberland Riviera."