New York, NY Building Safety: Plumbing Permits (2026)
Key Facts
- Permit authority
- NYC Department of Buildings
- Who may do the work
- Licensed master plumber only
- Unpermitted work penalty
- $2,500–$12,500 (Class 1)
- Unlicensed plumbing penalty
- $5,000–$25,000 (Class 1)
- Minor-work exception
- Ordinary plumbing work, self-certified monthly
Summary
New York City requires a Department of Buildings permit before any plumbing work, and only a licensed master plumber may perform it, under Administrative Code § 28-105.1 and § 28-408.1.
It shall be unlawful to construct, enlarge, alter, repair, move, demolish, remove or change the use or occupancy of any building or structure in the city, ... or to erect, install, alter, repair, remove, convert or replace any electrical, gas, mechanical, plumbing, fire suppression or fire protection system in or in connection therewith ... unless and until a written permit therefor shall have been issued by the commissioner in accordance with the requirements of this code, subject to such exceptions and exemptions as may be provided in section 28-105.4.
Full Breakdown
Before installing, altering, replacing or removing plumbing systems or gas piping in a building, the owner must get a plumbing work permit from the Department of Buildings under Administrative Code § 28-105.1, which makes such work unlawful without a written permit. Only a licensed master plumber, or someone under that plumber's direct and continuing supervision, may legally perform plumbing work (§ 28-408.1). A narrow carve-out for minor 'ordinary plumbing work', small fixture replacements and similar jobs, skips the permit if the licensed plumber files monthly reports with DOB documenting the work. Doing plumbing work without a permit or without the required license is a DOB violation, not a paperwork formality.
Violations & Fines
DOB Class 1 penalty for plumbing/construction work without a required permit starts at $2,500 (up to $12,500 for repeat violations); performing unlicensed plumbing work without a master plumber license starts at $5,000 and rises to $25,000.
Frequently Asked Questions
Do I need a permit for a small plumbing repair in NYC?
Can a homeowner do their own plumbing work in NYC?
Sources & Official References
Other rules in New York
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