Ellen DeGeneres
Alex Rodriguez
Who knew the baseball star is also a burgeoning real estate mogul? After flipping a Manhattan condo for $2.5 million in profit, Alex Rodriguez turned to Miami, where he $30 million home, making a $15 million profit, as well as a parcel of condos in a highly sought-after part of the Florida hot spot.
The former New York Yankees star's business partner Jose More says Rodriguez, "really enjoys the design process."
He clearly enjoys the profits, too.
Jennifer Aniston
Now that she's settled into marriage with hubby Justin Theroux, maybe the "Friends" star won't be so likely to buy and sell homes. But like her celebrity bestie Courteney Cox, Jennifer Aniston's got a head for real estate.
Aniston's mid-century Beverly Hills mansion was featured in Architectural Digest after Aniston remodeled the home.
"I never doubted the house would be mine one day," she tells the magazine. Four years later, she sold the same house for a roughly $24 million profit.
MORE: Celebrity Wedding Photos
Tobey Maguire
The "Spider-Man" star wanted to get in on Los Angeles's hot real estate market by flipping a plantation-style home in Brentwood. The actor earned a roughly $2 million profit from the sale.
The "Great Gatsby Star," however, didn't always have the luxury of buying and selling houses for sport.
"As a kid, I was very poor," Maguire tells the Guardian. "I mean, it's all relative, but we would get groceries from neighbors. I always had a roof over my head, but I slept on couches of relatives, and some night we wandered into a shelter. My family had food stamps and government medical insurance. And I wanted to get out of that, so my ambition was initially to make money; I was pretty driven."
Jeremy Renner
Jeremy Renner is so into house flipping, he's got a partner. Back in 2002, when he was still a struggling actor, "The Avengers"actor and his partner bought their first flip. They made $300,000 on that house and have since flipped 16 more.
Their latest flip earned them a $17 million profit. But as Renner's acting career has taken off, his time for real estate has slowed.
"I don't have the time to do it right now, but I will probably get back into it when things slow down for me," Renner tells "Entertainment Tonight." "But it is not slowing down any time soon, it seems, so I've had to put the brakes on that for a second."
Meryl Streep
The Oscar winner is known for her iconic portrayals of Margaret Thatcher and Julia Child, but Meryl Streep and her husband, artist Don Gummer, also have had some luck in real estate. Streep even flipped her Los Angeles mid-century modern home called The Research House to another celebrity house flipper, Alex Rodriguez, for a tidy $300,000 profit.
Naturally the listing read, "No open houses. No exceptions."
Hmm, did A-Rod get to see the house before he bought it?
MORE: Celebrity Mom Gal Pals
Diane Keaton
The "Something's Gotta Give" star is known for selling houses after restoring them to their original style. The actress, who flipped her Pacific Palisades, Calif., home, always looks for a house with good light, telling Architectural Digest, "I should be in the business of lighting. I think these things. I'm a nut! But I just know what's right for me, and lights make the house seem alive."