New York Plumber License: Requirements, Costs, and the NYC Process

New York is one of the most fragmented plumbing licensing states in the country. There is no statewide license and no single application filed with Albany. The New York State Department of State does not issue plumbing credentials, and the NY DOS licensing portal lists no plumbing license category at all. Authority sits entirely with local governments: cities, towns, and municipalities each set their own requirements, run their own exams, and issue their own licenses.

The practical impact is simple: a plumbing license in one New York municipality does not necessarily authorize work in another. A master plumber licensed in the Town of Hempstead is not automatically licensed to work in New York City, and may need separate licensing or reciprocal registration to work in neighboring municipalities

If you’re targeting multiple markets in New York, you may need multiple licenses or reciprocal registrations. Some jurisdictions recognize credentials from neighboring municipalities, while others, such as New York City, maintain entirely separate licensing systems.

Key takeaways

• New York has no statewide plumbing license
• NYC requires a Master Plumber license issued by the NYC Department of Buildings
• The initial license fee is $200; renewal is $225 every three years
• Nassau County plumbing licensing is handled at the town level, not the county level
• A Tri-Town reciprocity agreement covers most Nassau towns and villages, but not NYC
• A license from one New York jurisdiction does not authorize work in another

What Does a NYC Master Plumber License Cost?

NYC Master Plumber license costs to get started

NYC Master Plumber license renewal cost - your license and seal must be renewed every 3 years.

Source: NYC Department of Buildings

How plumbing licensing works in New York

New York puts licensing authority at the local level. The state’s Uniform Fire Prevention and Building Code applies across all municipalities except New York City, which retained its own code. But the code governs construction standards, not contractor licensing. Contractor licensing is a local matter everywhere in the state.

The practical result: your license covers the exact territory of the entity that issued it. Work in the next town without that town’s license and you’re unlicensed there. Your plumbing license is also separate from any general contractor or home improvement contractor registration. If you work across trades, those are distinct requirements with their own applications. Before committing to any new market in New York, identify the specific licensing authority for that jurisdiction and treat it as a completely separate process.

New York Plumbing Licensing at a Glance

Requirements are subject to change. Verify current requirements directly with each licensing authority before applying.

Sources: NYC Department of Buildings; Town of North Hempstead; Town of Hempstead Building Department.

New York City: Master Plumber License

The NYC Department of Buildings is the licensing authority for plumbers in New York City. The Master Plumber license is what independent contractors need: it authorizes you to file permit applications, pull permits, supervise journeyman plumbers, and operate a plumbing contracting business within the five boroughs.

Journeyman plumbers can also register with the DOB (registration fee: $50), but registration alone does not authorize permit-pulling or independent contracting. Only the Master Plumber license does.

Experience requirements

There are five qualifying paths. The standard path:

At least 7 years of total experience within the 10 years prior to application in the installation of plumbing systems and the planning or design of plumbing systems, under the direct and continuing supervision of a licensed Master Plumber in the United States, with at least 2 of those years as a registered journeyman plumber in New York City.

Three alternative paths reduce or restructure the experience requirement:

A bachelor’s degree in mechanical engineering or appropriate engineering technology from a NY State Department of Education-registered college reduces the requirement to 5 years of experience within the 7 years prior to application, with at least 2 years in New York City.

A NY State-licensed Registered Architect or Professional Engineer needs only 3 years of experience within the 5 years prior to application, with at least 1 year in New York City.

Applicants whose experience comes primarily from plumbing inspection work for government or private agencies may credit that inspection experience at 50% toward the 7-year total, up to a maximum credit of 2.5 years.

The NYC-specific experience requirement is a real filter regardless of which path you take. City code requirements, multi-family residential systems, and commercial building plumbing make up the core of what the DOB expects. Experience from other states counts toward totals but won’t satisfy the NYC-specific portion.

Exams

Two exams are required, taken in sequence. You must pass the written exam before you can apply for the practical.

Written exam: Multiple-choice, covering NYC Construction Codes, rules, and regulations. No reference materials permitted. Passing score is 70%. Results given at the test site the same day. Apply and pay the $585 fee through the DOB NOW Public Portal by eCheck or credit card before scheduling.

Practical exam: Covers hands-on plumbing skills. Apply separately after passing the written exam. Fee is $530, paid the same way. You have 24 months from your written exam notification to pass the practical. Results arrive by U.S. mail approximately 3 to 4 weeks after testing.

Total exam cost: $1,115.

Background application

After passing both exams, you have one year to submit your background application through DOB NOW: Licensing. As of February 23, 2026, the DOB no longer accepts walk-in transactions or paper applications for Master Plumber licenses. Everything is submitted online.

Required documents include:

• Passing score reports for both exams
• Physical exam form (LIC62), completed by a physician within 90 days of submission
• Experience Verification Form (EVF), completed and signed by all supervisors for the years being claimed. EVFs completed by HR or by the applicant are not accepted
• Social Security History of Earnings, requested as a detailed itemized statement organized by company name
• Valid government-issued photo ID and Social Security card
• Latest pay stub and/or W-2

All documents must be signed and notarized within 90 days of submission.

Business requirements

You cannot hold a NYC Master Plumber license as a solo individual without a business entity. You must be an officer, partner, or sole proprietor of a business with a NYC address in a commercially zoned location.

For corporations: the licensee must be an officer. The corporation must hold at least 51% controlling interest in the hands of licensed Master Plumber(s), unless combined licensee interest meets that threshold.

For LLCs: the licensee must be designated as an officer in the LLC’s operating minutes. The LLC needs a copy of the filing receipt or Certificate of Good Standing, Articles of Organization certified by the state, and an operating agreement (or an affidavit stating there is none).

All businesses must carry General Liability, Workers’ Compensation, and Disability insurance. The GL policy must list the DOB’s required coverage levels. A telephone bill in the business’s name for the approved location is also required; if using a non-traditional line, a current utility bill or a notarized lease showing utilities are included must accompany it.

License fees and renewal

The initial license fee is $200, plus a $50 seal fee. The NYC Master Plumber license has a 3-year term.

Renewal is through DOB NOW: Licensing and requires a NYC.ID account. Renewal fee: $225 ($150 for the license, $75 for the seal). Submit 30 to 90 days before your expiration date to avoid late fees.

Late renewal fees: $50 additional for renewals filed 1 to 30 days after expiration; $100 additional for renewals filed more than 31 days after expiration. Each renewal requires a completed physical exam form (LIC62) from a physician within 90 days of submission and an original 7-hour continuing education course certificate.

What this process actually looks like

From first submitting an exam application to holding your license, plan on six months to a year under normal conditions. That assumes clean documentation. Applications with gaps in experience records, unsigned EVFs, or supervisor verification issues take longer. Start the process before you need the license.

Nassau County and Long Island

Nassau County itself does not issue plumbing licenses. Plumbing licensing on Long Island is handled at the town and village level.

The three primary licensing jurisdictions in Nassau County are the Town of Hempstead, the Town of North Hempstead, and the Town of Oyster Bay, each maintaining its own Examining Board of Plumbers. The City of Long Beach and City of Glen Cove have their own licenses as well. Beyond those, many incorporated villages within Nassau County have their own requirements or require separate registration.

The experience standard across Nassau County towns is generally 7 years, consistent with NYC’s standard path, though exam structure, fees, and documentation requirements differ by jurisdiction.

A NYC Master Plumber license does not authorize work in Nassau County. A Nassau town license does not authorize work in NYC. Treat each as a completely separate credential. If you also hold an electrical license, the same rule applies: New York electrical licensing is local too.

The Tri-Town reciprocity agreement

Nassau County has operated under a Tri-Town plumbing reciprocity agreement since 1969. The agreement allows plumbers licensed in one of the three Nassau County towns to obtain licenses in other participating towns and incorporated villages without re-sitting the full exam.

The Town of North Hempstead, for example, will waive its exam for applicants who hold a currently valid Certificate of Competency from the Town of Hempstead or the Town of Oyster Bay, provided the applicant maintains a principal place of business within Nassau County. The full application, fees, and insurance documentation still apply. The exam is the only thing waived.

Many incorporated villages within Nassau participate in the agreement: the Incorporated Village of Hempstead, Village of New Hyde Park, Village of Rockville Centre, Village of Freeport, and others. Not every village participates. Reciprocity agreements between specific municipalities can and do change. Verify directly with each jurisdiction before assuming coverage.

If you hold a Certificate of Competency from a Nassau village rather than one of the three parent towns, a separate Plumber Reciprocal Application is required for North Hempstead rather than the standard Tri-Town process.

Suffolk County

Suffolk County has its own licensing structure separate from Nassau. Like Nassau, licensing authority sits with the individual towns and some villages rather than the county. Reciprocity between Suffolk and Nassau towns is not automatic. Contact each Suffolk town’s Building Department directly for current requirements before pursuing work there.

Westchester County

Westchester has county-level licensing requirements for plumbers, administered separately from Nassau and from NYC. Some municipalities within Westchester have additional local requirements on top of the county license. Contact the Westchester County Department of Consumer Protection directly for current requirements.

Upstate cities

Buffalo, Rochester, Syracuse, and Albany each set their own municipal licensing requirements for plumbing contractors. The structure varies. Contact each city’s Department of Buildings directly and ask for current requirements before preparing. Online information for many upstate municipalities is outdated.

Practical advice for multi-jurisdiction contractors

Get licensed in your primary market first. Don’t pursue multiple local licenses simultaneously at the start. The administrative load is significant and the requirements are different enough to need separate preparation for each. Finish the first one, then add the next.

Don’t assume reciprocity. New York’s local jurisdictions generally don’t recognize each other’s licenses automatically. Each requires its own application and usually its own exam. The Nassau Tri-Town agreement is the main exception, and even that has limits. Confirm any reciprocity arrangement is currently active before you count on it.

Before you take a job in a new jurisdiction, understand who can pull the permit. In NYC and across Nassau, plumbing permits must be filed by the license holder. An unlicensed employee or sub can’t do it on your behalf. Find out how permit-pulling works in each market before you commit to a project.

Renew on time. NYC gives you a window of 30 to 90 days before expiration to submit without penalty; anything later adds $50 to $100 on top of the standard $225. Nassau towns run their own renewal schedules. A lapsed license mid-project is a problem with no quick fix.

Once you’re licensed

Getting licensed is the hard part. Staying compliant afterward is an ongoing job: permits to pull, renewals to track, license numbers and insurance certificates to keep current across every jurisdiction you work in. Miss a renewal or let a certificate lapse and you’ve got a compliance problem mid-project with no quick fix.

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Licensing requirements, fees, and exam formats are subject to change. For New York City, verify current requirements with the NYC Department of Buildings. For Nassau County towns, contact the relevant town’s examining board directly. For other jurisdictions, contact the relevant county or municipal licensing authority.