Code: B201 (official violation code)
Description: This means that construction or other regulated work was done without a required permit from the NYC Department of Buildings. It is a Class 2 (hazardous) violation under section 28‑105.1.
Practical Meaning: For a NYC homeowner, this usually means you or your contractor did work such as renovations, walls, plumbing, or electrical changes without first getting a DOB permit. You will need an architect or engineer and a licensed contractor to file the proper applications, pay any civil penalties, and either legalize the work or remove it so the building is back to a legal condition.
Where You May See It: You may see this code on a DOB violation or summons from OATH, in online records for your property in DOB NOW or BIS, or in reports from property managers and expediters. It can also appear in emails or letters from your managing agent or attorney when they explain why you must file for permits before doing more work.
Why It Matters: This violation can lead to significant fines, stop work orders, and extra penalties if you do not fix the problem quickly. It can also delay refinancing or selling your home, because banks, buyers, and their attorneys often require proof that all work is legal and that DOB violations are resolved.
Source: More about work without a permit