The listing appeared days after Allen released a new album that directly references the lavish four-story townhouse and their "brutal split".
The couple purchased the property for $3.35 million in early 2021, with its current value reflecting an extravagant redesign by Billy Cotton and Ben Bischoff.
The 19th-century home, located in Carroll Gardens, gained viral attention after an Architectural Digest feature in 2023, particularly for its unique decor like a carpeted bathroom.
Following their separation, Harbour has returned to his West Village apartment, while Allen and her two daughters have relocated to London.