Lauren Graham has an issue with her neighbor, Dax Shepard.

The two co-starred as siblings in the popular drama "Parenthood" from 2010-2015 and their friendship has carried over into real life, as they are now neighbors.

In an appearance on "Jimmy Kimmel Live!" on Thursday, Graham, 54, opened up about living next to the "Bless This Mess" star.

"Dax has been working on his new house and the way we're situated [in the neighborhood], I pass him all the time. It's a beautiful house, it's going to be incredible," the actress began. "He basically took what others might consider to be the front lawn and turned it into a massive driveway for all his cars."

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She then explained that Shepard, 46, has "the most massive band tour bus you've ever seen" on his property, though she initially assumed it would only be there temporarily.

"I pass this every day, and I was like, 'Gosh, when are they going to get rid of the bus?'" Graham said. "They're never getting rid of it, Jimmy. He bought that."

A few pictures of the vehicle were displayed, showing that it was a large RV.

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Graham continued: "We gave up a long time ago. He rides around topless on a motorcycle -- you have to just love him."

Shepard isn't the only "Parenthood" co-star that lives near Graham. In fact, the "Gilmore Girls" alum shares her home with another.

'Parenthood' cast (left to right): Erika Christensen, Peter Krause, Bonnie Bedelia, Craig T. Nelson, Lauren Graham and Dax Shepard. 

'Parenthood' cast (left to right): Erika Christensen, Peter Krause, Bonnie Bedelia, Craig T. Nelson, Lauren Graham and Dax Shepard.  (Justin Lubin/NBCU Photo Bank/NBCUniversal via Getty Images)

Graham is in a long-term relationship with Peter Kraus, who played brother to her and Shepard on the show.

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"Also, I live with my other brother, Peter [Kraus], who lives in my bedroom," she joked.

The two have been together since 2010, which is when "Parenthood" first hit the airwaves.

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The show starred the trio as the grown Braverman siblings who lived through tragedies and triumphs together with their parents and various children.