On January 12, 2026, a wall of a one-story commercial building being demolished at 57 East Burnside Avenue in Mount Hope came down onto the sidewalk shed and into the street. No injuries were reported, according to the Bronx Times and News12 Bronx. Ten days later the Department of Buildings did something it does not do often: it went after the contractor's registration, not just the site.

Here is the operative language from DOB's January 22 release, word for word: "Commissioner Ahmed Tigani announced today that the Department of Buildings is taking immediate action to suspend the registration of General Contractor Yakov Eisenbach of Hexagon Industries Inc., following an uncontrolled wall collapse at a demolition work site in the Mount Hope section of the Bronx earlier this month."

“This incident in the Bronx was the seventh time that Mr. Eisenbach has been cited for violating an active Stop Work Order at a demolition or construction site.”

And this: "In the interest of public safety, DOB is in the process of issuing Full Stop Work Orders at all sites in the city where Mr. Eisenbach is listed as the permit holder, until such time as the property owners can hire a new contractor. Department attorneys also filed a case against Mr. Eisenbach at the Office of Administrative Trials and Hearings (OATH), in an effort to fully revoke his ability to obtain construction permits in New York City going forward."

What DOB says happened. Per the release: "On January 12, 2026, construction crews in the employment of Mr. Eisenbach were performing demolition operations at a large single-story building at 57 East Burnside Avenue in the Bronx. While work was ongoing, a building wall along Walton Avenue experienced an uncontrolled collapse, spilling out onto an adjacent sidewalk shed, and sending debris approximately 15 feet onto the roadway."

DOB's findings, again verbatim: "DOB's investigation into this incident determined that the contractor ignored a previously issued Full Stop Work Order for the site, which legally prevented the demolition from proceeding; was performing the demolition out of sequence diminishing the safe guards required to be allowed to advance the work, and contrary to the approved engineering plans; and was illegally using an excavator to speed up the demolition work, which was approved to be performed by hand for the general safety of workers and the public."

Then the line that explains why this is a registration case and not a one-site case: "This incident in the Bronx was the seventh time that Mr. Eisenbach has been cited for violating an active Stop Work Order at a demolition or construction site." DOB lists the prior sites as 30-01 Northern Boulevard, Queens (January 7, 2026); 986 Dahill Road, Brooklyn (September 29, 2025); 89-01 165th Street, Queens (September 17, 2025); 1672 86th Street, Brooklyn (August 13, 2025); and 121 Mount Hope Place, Bronx (December 23, 2024). The release adds: "As the permit holder for all of these jobs, Mr. Eisenbach was legally responsible for ensuring that each of these sites were in full compliance with city regulations."

These are DOB's determinations and an OATH case. They are not a court finding, and nothing in the record is a conviction of anything. The Bronx Times and News12 Bronx reported the action as DOB's first attempt at a permanent revocation of a GC registration, and reported that Eisenbach voluntarily surrendered his registration. Neither of those statements is in DOB's release; they are those outlets' reporting.

What the violation record shows. DOB's ECB violation dataset for the building (BIN 2013946) lists ten violations issued January 12, 2026, to Hexagon Industries Inc. as respondent. The penalties listed across the ten total $147,500 per that record, with $0 recorded as paid. The hearing statuses on the record are a mix of "pending," "default," and "in violation." Those are OATH's own labels: "in violation" means the summons was sustained at an administrative hearing, "default" means no one appeared for the respondent, and "pending" means it has not been heard. None of them is a court finding, and a sustained summons can still be appealed within OATH. That number is what the record says. You may see a higher figure in news coverage; the ECB record does not show it.

The big ones: a $25,000 summons under Building Code 3301.2, with the inspector's note reading "WORKERS WAS USING EXCAVATOR TO PULL THE WALL DOWN." Two more at $25,000 each, cited for no site-safety orientation and no pre-shift meeting. A $10,000 summons under Administrative Code 28-207.2.2 for continuing work under a Full Stop Work Order that the record says was issued January 7, 2026. Another $10,000 summons stating the site log book showed work on January 8 and 9 under that same order. A $12,500 summons citing no overhead protection, with debris described as landing at 2065 Morris Avenue next door. Four more at $10,000 apiece. Each of these is what the inspector wrote on the summons; the hearing statuses above say which have been sustained and which are still open. The same dataset shows six violations issued at the address on January 6 and four on November 17, 2025, before the collapse.

How "until the owners hire a new contractor" actually played out. The permit record is the part of this story most contractors never see. DOB NOW shows the full-demolition job, X01197441-I1, permitted to Hexagon Industries Inc. with Eisenbach as GC on October 24, 2025, renewed November 18 and December 16. The same job also carries a separate mechanical-means permit, X01197441-S1, issued October 23, 2025, for equipment working on grade. DOB's release says the wall demolition itself was approved to be done by hand; what the approved plans allowed a machine to do, and where, is DOB's determination and is exactly what a respondent would contest at OATH on the excavator summons. We have not seen the plans. On January 16, 2026, four days after the collapse and six days before the release, the demolition permit was reissued to a replacement GC, DM80 Solutions LLC, which renewed it on May 26. The fence permit moved from Hexagon to DM80 on January 22, the same day as DOB's announcement. So the owner did exactly what the release describes: hired a new contractor, and the job went on without the old one.

Why this matters to you. Three things in this record are enforceable terms, not suggestions. A Full Stop Work Order is a legal bar on the work; the record here shows citations for working under one on two separate days. The approved demolition sequence is a term of the permit; DOB's finding says the sequence was changed and the safeguards that go with it went away. And hand-versus-machine is written on the approved plans; the record's largest single summons alleges an excavator was used on work DOB says the plans called for by hand. Deviating from any of the three is what DOB says it cited here; the OATH case is where that gets tested.

What to do next. Before you sign a demo sub, or take a demo job as prime, pull the permit holder's registration status on DOB NOW and the site's stop-work history on BIS. An open or recently lifted SWO on the permit holder's other sites is a red flag you can see for free; DOB's own release lists five prior sites for this one contractor going back to December 2024. Owners and neighboring building managers: the same lookup tells you whether the crew next door has a stop-work history. And read the demo plan for the sequence and the method. If the plan says hand demo, an excavator on the wall is not a shortcut; on this record, DOB wrote it up as a $25,000 summons and cited it in a registration case.