Illegal Plumbing in a Multiple Dwelling in NYC
A DOB violation (letter code MDV) and ECB/OATH summons for plumbing work in a multiple dwelling that was done without permits or not to code.
What It Means
Plumbing work in a multiple dwelling done without permits or not to code. MDV is the DOB letter code for multiple-dwelling violations, and these conditions commonly pair with a work-without-permit charge under §28-105.1.
Why You Got It
Common triggers: unpermitted bathroom or kitchen plumbing, illegal connections, or conversions.
Consequences & Penalties
Work-without-permit penalties plus penalties for the underlying condition apply, all set by the DOB penalty schedule and varying by infraction code. These are often higher-stakes because of the multi-unit scope.
Information current as of 2026-06-21. Penalty amounts and deadlines change — confirm specifics against your violation notice or with a Licensed Master Plumber.
How to Clear It
- A Licensed Master Plumber scopes the unpermitted work.
- File the permit, correct the work to code, and pass inspection.
- Pay or waive penalties and submit the Certificate of Correction.
Timeline
Driven by the dates on the paired summons.
Related Laws & Rules
- Multiple Dwelling Law
- Admin Code §28-105.1
Frequently Asked Questions
There is unpermitted plumbing in my apartment building — how is it cleared?
A Licensed Master Plumber scopes the unpermitted work, files the permit, corrects the work to code, passes inspection, and certifies the correction to clear the MDV.
What is an MDV?
MDV is the DOB letter code for a multiple-dwelling violation. For plumbing, it covers work in a multiple dwelling done without permits or not to code, and it commonly pairs with a work-without-permit charge.
Will the penalties be higher because it is an apartment building?
These cases are often higher-stakes because of the multi-unit scope. Exact figures are set by the DOB penalty schedule and vary by infraction code — confirm against your summons.
Sources
Clear This Violation With a Licensed Master Plumber
Send us your notice and we'll handle the full DOB violation removal service — from diagnosis through DOB sign-off. Same-day response.