The Cosby family's home was actually located in the West Village, not Brooklyn Heights. And thanks to the California housing bubble, the cost of a "Modern Family" house has depreciated. We've opened up our homes to the Cosby clan, the dysfunctional families on "Mad Men" and a loveable "Modern Family"—and in turn, they opened up their fictional homes to eager viewers who relate to their scripted lives.

While we all know Carrie Bradshaw's "Sex and the City" digs were out of her journalist price range (trust us), do you ever wonder just how far on up the Jeffersons moved or the actual price of that "Downton Abbey" castle?

Vanity Fair spoke with our friend and "Shark Tank" real estate expert Barbara Corcoran, who looked at famous TV properties past and present to reveal their worth at the time of air and presently.

Sorry, "Golden Girls," but doesn't look like four raucous ladies in their latter years could have afforded the Miami sorority house they called home.

See which other popular TV homes are worth a lot—and those that are not.