Taylor Swift is getting a new neighbor.

The stellar songstress, who is also a big real estate investor, has spent close to $50 million on a single cobblestoned block in Tribeca — including three units for close to $30 million at 155 Franklin St, beside her $18 million townhouse at 153 Franklin St., as Gimme previously reported.

Now another unit, on the fourth floor of 155 Franklin, has sold for $9.99 million.

The four-bedroom, three-bath prewar unit is 3,532 square feet.

It boasts a great room, with corner exposures, oversize windows and a wood-burning fireplace, along with an open chef’s kitchen with a breakfast bar. There’s also a main bathroom with a dressing room, private sitting area and spa-like bathroom.

The unit also boasts classic loft features, like cast-iron columns, exposed brick and wood-beamed ceilings.

“It was supposed to be a rental, but then the buyer saw it, fell in love and basically purchased it on the spot,” our spy said.

The listing brokers were Douglas Elliman’s Kirsten Jordan, a star of “Million Dollar Listing New York,” and Elliman’s Karishma Sani.

At 155 Franklin, Swift bought an 8,000-square-foot penthouse duplex from “Lord of the Rings” director Peter Jackson for $19.95 million in 2014. She later added a $9.75 million unit.

Past and current residents of the 6½-story brick building have included comedian Aziz Ansari — who bought his unit from then-New York Rangers captain Ryan McDonagh — as well as Orlando Bloom and Steven Soderbergh.

The classic 19th-century building was the former Sugarloaf Warehouse.

Quips Jordan: “Who wouldn’t want to share an address and an elevator with Taylor Swift?”