“Right now, I’m focused on growing and really getting my numbers up,” said Bri Teresi, 23, who has 419,000 followers on Instagram.

Others see living at 1600 Vine as a golden marketing opportunity.

Taylor Offer and Parker Burr moved in last year hoping to befriend social media stars not for their own fame but to promote their sock company, Feat Socks. When Mr. Offer first visited the two-bedroom unit, he said, it was like “walking into Jerry’s apartment building on ‘Seinfeld’” because he recognized it from Vine videos. He signed a lease on the spot, needing to prove only that he and Mr. Burr could afford the $3,700 monthly rent.

But Mr. Offer soon realized it wasn’t enough to live in the building; they had to help the influencers fill their daily need for content. So Mr. Offer bought a cute English bulldog puppy and a flashy Polaris Slingshot car. The puppy appeared in a video with Ms. Cerny while Logan Paul took an interest in the purple car, a three-wheeled vehicle that looks like a roadster.

A star like Mr. Paul has his pick of sponsorship deals, but he took a liking to his new neighbors, so he concocted a bet — or, more accurately, a social media story line. If Mr. Paul could sell 20,000 pairs of socks (printed with an image of his colorful parrot, Maverick), he would get the roadster. He promoted the bet in videos and, even though he fell short, Feat had its best sales month ever and Mr. Paul received a $200,000 commission check.

“As a business expense,” Mr. Offer said, “this place pays for itself.”

Reality Show

Calling 1600 Vine home is still no guarantee of influencer status. It also breeds a certain kind of cliquishness and backbiting.

Gregg Martin, a young actor who has landed bit roles in TV series including “Agents of S.H.I.E.L.D.,” said he felt the building’s stars looked down on him. He has 44,000 Instagram followers.