Code: B301 – Work Without A Permit (Class 3) (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 3 (less hazardous) violation under section 28‑105.1.
Practical Meaning: For a NYC homeowner, this usually means the City found work at your property that needed a permit, but the work is considered lower risk than Class 1 or Class 2 “work without a permit” cases. You still need a design professional and licensed contractor to file for permits or restore the property to its prior legal condition, and you must pay civil penalties before the violation can be closed.
Where You May See It: You may see this code on a DOB violation or OATH summons, in your property record in DOB NOW or BIS, or in reports from your property manager or expediter. It may also appear in emails or letters from your lender, attorney, or managing agent when they explain what must be fixed before a refinance or sale.
Why It Matters: Even though it is a lower‑risk Class 3 violation, it can still lead to fines and extra penalties if you do not correct the work and show proof to DOB. Unresolved “work without a permit” violations can slow down or block refinancing, insurance changes, and sales, and can trigger more inspections or enforcement from the City.
Source: More about work without a permit