State plumbing guide · NY
Plumbing in New York
New York has two plumbing rulebooks. New York City writes its own construction codes and licenses its own plumbers, while the rest of the state follows the New York State Uniform Code. Much of the state's housing is old, so cast iron, galvanized pipe and aging service lines come up often.
- Median home built
- 1959
- Built before 1980
- 73%
- Owner-occupied
- 54%
- Winter
- Regular hard freezes
- General statewide rating
- Plumbing code
- IPC
- City guides
- 5
Housing figures: U.S. Census Bureau, ACS 2024 1-year (B25035, B25034).
New York city plumbing guides
How to check a plumber's license in New York
In New York City, plumbing work must be done under a Master Plumber license issued by the NYC Department of Buildings, which requires years of supervised experience and written and practical exams. [1]
New York has no statewide plumber license; outside NYC, licensing is handled by individual cities and counties, and requirements vary. [2]Awaiting verification
New York's older housing stock
Statewide, the median home was built in 1959 and 73% of homes predate 1980. Homes like that were usually built with copper or galvanized supply, cast iron drains, clay or cast iron sewer laterals. The city guides below show how much that varies within the state.
Which plumbing code applies in New York
Outside New York City, plumbing work follows the New York State Uniform Code. Its 2025 edition, which includes the 2025 Plumbing Code of New York State, took effect December 31, 2025. [3]
New York City has its own plumbing code. The 2022 NYC Plumbing Code, based on the 2015 International Plumbing Code with extensive local changes, took effect November 7, 2022. [4]
Seasonal problems to plan for in New York
- Winter
- Sustained freezes. Pipes in exterior walls, unheated basements and crawl spaces, and outdoor spigots are at risk. See frozen pipe repair.
- Spring
- Snowmelt and spring storms raise groundwater. Basement seepage, sump pumps and sewer backups become common calls.
Regions of New York
New York City
Five boroughs, the country's oldest large housing stock, and NYC's own codes and licensing.
New York plumbing questions
Does New York City follow the state plumbing code?
No. New York City has its own construction codes, including the 2022 NYC Plumbing Code, and its Department of Buildings licenses master plumbers. The rest of the state follows the New York State Uniform Code.
How do I check a plumber's license in New York?
In New York City, confirm the Master Plumber license with the Department of Buildings. Elsewhere, ask the plumber which local license they hold and check with that city or county.
Sources (5)
- U.S. Census Bureau, ACS 2024 1-year (B25035, B25034) · checked 2026-10-01
- NYC Department of Buildings, Obtain a Master Plumber License · checked 2026-10-01
- Secondary sources; confirm with NYS Department of State
- New York Department of State, Notice of Adoption: 2025 Uniform Code · checked 2026-10-01
- NYC CityStore, 2022 NYC Plumbing Code · checked 2026-10-01