The 27-year-old progressive operative behind New York Mayor Zohran Mamdani's rise allegedly skipped rent for months, bounced a check, and left his Williamsburg apartment stuffed with trash, while advising campaigns that target landlords.
Morris Katz signed a six-month lease last November on a top-floor duplex along Lorimer Street in Williamsburg, Brooklyn. Two bedrooms, three bathrooms, a private roof deck, $6,500 a month. By the time the lease expired on April 30, he had racked up $14,000 in unpaid rent, the New York Post reported, citing two sources with knowledge of the matter and the building's superintendent.
Katz co-founded the Fight Agency, a left-leaning political consulting group credited with fueling Mamdani's rise from a backbench state lawmaker to the mayor's office. He grew up in a $5 million apartment, the son of screenwriter and TV producer David Bar Katz and children's book author Julie Merberg. His late godfather was actor Philip Seymour Hoffman. None of that pedigree kept his rent checks from bouncing.
Building representatives had to chase Katz for payments during the first three months of his lease. After that, he stopped paying entirely. When he finally tried to settle the balance, his check bounced.
Felix Barbosa, the building's superintendent, spoke to the Post while hosing down the sidewalk outside the four-story building. He did not mince words.
"It was one of those things to get the rent you had to pull out his f***ing teeth. But then he came back and paid everything, $14,000. I don't know where the money came from."
The money, it turns out, came from Katz's family. A Fight Agency spokesperson said Katz "didn't yet have a checkbook with his new bank, so he sent his family the funds to use theirs and paid the balance in full." He eventually paid the full $14,000 before moving out on April 30.
But moving out did not mean clearing out. The apartment sat with his belongings and trash until early June, more than a month past the lease's end date. Photos obtained by the Post showed a loaded bar cart, a junk-filled closet, random furniture, and a refrigerator packed with takeout boxes and wrapped-up leftovers.
Barbosa was blunt about the condition Katz left behind:
"He has too much on his plate that he can't handle, that's what happened with him. He didn't clean up the place at all. He didn't clean up any of his s***."
The spokesperson's explanation for the mess: "When he returned from traveling for work, he cleared out his remaining belongings." No timeline was offered for that travel.
The superintendent went further, alleging that Katz's debts extended beyond rent.
"He owes Con Edison money. He owes the gas company money. He owes everyone money."
Barbosa summed up Katz's situation with a line that doubled as a character sketch:
"When you come from a rich family, you don't have your priorities in order."
When the Post reached Katz by phone, he tried to claim Barbosa's comments were taken out of context. He did not dispute the $14,000 figure or the characterization that he had stopped paying. He said he had stayed in "communication" with the landlord during the months of non-payment.
The irony runs deeper than a messy apartment. Katz is not just any 27-year-old who fell behind on rent. He is the political mind behind a mayoral administration that has made landlords a primary target.
Mayor Mamdani's City Hall enacted a rent freeze on roughly one million stabilized apartments across New York City, a move critics said was enabled by stacking the relevant board. The Mayor's Office of Mass Engagement prioritized getting tenants to attend board meetings in support of the freeze. And tenant advocate Cea Weaver now leads a City Hall initiative targeting landlords the administration considers bad actors.
So the man who helped build the political operation pressuring landlords across the five boroughs could not be bothered to pay his own landlord $6,500 a month, or to clean up after himself when the lease ended.
Katz's client list during the same period underscores how busy he was reshaping New York's political left while his rent went unpaid. During the June Democratic primaries, he advised congressional candidates including Democratic Socialists of America members Darializa Avila Chevalier and Claire Valdez, along with Brad Lander and Micah Lasher.
His track record with candidates has not been spotless. Katz previously took on advising the campaign of Graham Platner, a Maine Senate hopeful whose bid collapsed after a rape accusation surfaced. Katz was alleged to have threatened a whistleblowing ex-staffer in connection with that episode.
For all the superintendent's frustration, Barbosa offered a measured final word on his former tenant:
"He's not a bad guy, but his priorities are all f***ed up."
No formal legal action, no eviction filing or civil suit, was referenced in connection with the unpaid rent. The current status of Katz's alleged utility debts remains unclear. The Fight Agency spokesperson did not address Barbosa's claims about money owed to Con Edison or the gas company.
Katz has received glowing profiles in magazines and newspapers as a progressive rising star. Whether those outlets will find the landlord story as interesting remains to be seen.
There is a certain kind of progressive politics that demands accountability from everyone except the people running the show. A 27-year-old operative who grew up in a $5 million apartment, stiffed a working landlord for months, bounced a check, and left his place full of garbage, all while advising an administration that lectures property owners about their obligations, is not a contradiction the left will want to explain. But it is one voters in New York deserve to see.
