Are Rob Kardashian and Blac Chyna Really Moving to a Mansion in New York?

Is Rob Kardashian leaving California?!

Rob Kardashian loves to keep his fans on their toes.

The 29-year-old reality star raised eyebrows on Monday when he Instagrammed a picture of a $48 million mansion in Southampton, New York, and claimed the luxurious property was his new digs.

"Just closed the deal on my new house and can't wait to move out of CALI‼" Rob captioned the snap. "AMERICA!!!!!"

WATCH: Rob Kardashian and Blac Chyna's New Reality Show Kicks Off With Cheating Accusations and Crazy Drama

However, a source tells ET that Rob was just "joking around."

In February, Rob's mother, Kris Jenner, bought her only son a $2.3 million home in Calabasas, California. The swanky 4,256-square-foot house boasts four bedrooms and five baths.

The home was a big source of tension in the Kardashian family, leading to an argument in an April episode of Keeping Up With the Kardashians in which Rob's sister, Kim, tells Kris, "You should not be paying for your son that is almost 30 years old to buy a house."

WATCH: Rob Kardashian Says He's 'Sick' of Blac Chyna Kicking Him Out, Turns to Scott Disick for Advice

But these days, Rob is looking forward to becoming a dad rather than buying a new home. Rob and fiancee Blac Chyna revealed they're having a baby girl on Thursday's episode of their new reality show, Rob & Chyna.

"Can't wait to meet my beautiful baby girl!" Rob also Instagrammed on Monday along with a picture of their child's sonogram. "@blacchyna looking forward to that bond more than anything."

Watch below: