Pool party’s over.
A rule-breaking Brooklynite installed a full-sized swimming pool on the roof of a commercial building — and now its landlord is drowning in potential fines, according to the city.
The gleaming 480-square-foot pool on the Williamsburg rooftop was drained by officials Tuesday, according to the Department of Buildings.
The owner of the three-story brick complex on Flushing Avenue near Thornton Street faces up to $50,000 in fines for two code violations, a DOB rep told The Post Thursday.
Photos showed the 4-foot-deep, above-ground pool — which holds roughly 60 tons of water — full before occupants’ dip-taking dreams were dashed.
“New York. We know. It’s hot. We get it,” the DOB tweeted. “But please don’t try to build a rooftop swimming pool without first getting permits and hiring professionals to do the job properly.”
The department was alerted by FDNY officials that a “structural stability inspection” was needed at the apartment “due to overloading the roof,” according to city documents, which note the third floor of the building is a kids’ day care center.
The building appeared to be abandoned and the empty Bestway Power Steel brand pool remained on the roof when The Post visited the rooftop Thursday.
A green hose was discarded near the pool and a kids’-size inner tube sat in the drained pool Thursday. Nearby, a sign for a Yeshiva school was posted on a third-floor door.
“It just opened up like a month ago,” Maria Hernandez, an employee of the bakery next door, said of the school. “They look like kids, kids — 4 to 6 years old.”
It wasn’t immediately clear if the building’s landlord had installed the pool or if a building occupant had decided to make a splash.
The landlord, who could not be reached by The Post Thursday, is scheduled to make an Office of Administrative Trials and Hearings appearance in December for the maintenance and occupancy violations.
