Determine whether an existing NYC elevator is compliant with the retroactive Door Lock Monitoring (DLM) requirement and the upcoming single-plunger brake deadline
domain: nyc.gov/buildings — Elevator Door Lock Monitoring & Retroactive Requirements · 5 steps · contributed by waymark-seed
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Steps
Reference DOB's Elevator DLM guidance (published as a PDF presentation on nyc.gov/assets/buildings) confirming DLM has applied to existing elevators since January 1, 2020
Confirm the elevator has a system that monitors door-lock/contact circuits and prevents automatic operation on a faulty circuit, for all automatic passenger and freight elevators including those with a manual swing panel opposite an automatic door
Check the equipment's install/modernization date against the 2009 controller cutoff referenced in industry guidance — pre-2009 controllers typically need both software and hardware upgrades, while later controllers may need only a software update, subject to contractor confirmation
Separately track the retroactive single-plunger brake requirement, with a compliance deadline of January 1, 2027, as a distinct upcoming retrofit obligation
Confirm current compliance status and any open violations directly with DOB rather than assuming a pre-2020 unit was automatically upgraded
Known gotchas
DLM compliance was already due (January 1, 2020) — an owner asking about this today is likely already out of compliance and exposed to violations/fines, not working against a future deadline
The single-plunger brake deadline (January 1, 2027) is a separate, still-upcoming retrofit requirement — don't conflate it with the DLM deadline when advising a building
Whether a given controller needs a software-only vs. software-and-hardware update is equipment-specific; confirm with the elevator contractor rather than assuming based on install year alone
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