Permit May Be Required
Do you need a permit to install a water heater in New York, NY?
A simple direct like-for-like replacement of an existing fixture/heater is ordinary plumbing work and does not require a DOB permit (but must be done by a Licensed Master Plumber). Any work that alters or relocates piping requires a plumbing permit.
✓ Verified from official source
Source: NYC Department of Buildings — Plumbing Permits — Verified 2026-06-26
Permit rules vary by property and change over time. This is an informational guide, not legal advice — always confirm with New York City Department of Buildings (DOB) before starting work.
How to get the permit in New York
Building department
Apply online
Phone
311 (or 212-639-9675)
Code in force
2022 NYC Construction Codes / NYC Building Code (NYC does NOT adopt the IRC; it enforces its own Construction Codes per 1 RCNY 101-14)
Need a permit pulled? Find a licensed plumber in New York
Licensed plumbers near you can handle the permit and the work — compare pros on our directory.
Find a plumber in New York, NY →See Installing a Water Heater permit rules for other cities →