How to Get a Plumbing License in New York

New York has no statewide plumbing license. The city, town, village, or county where you work sets the rules, and a license from one area won’t necessarily let you take jobs in another.

In New York City, you’ll need a Master Plumber license to run a plumbing contracting business and perform work that requires a licensed Master Plumber. Other areas, including Buffalo, Westchester County, and Nassau County, have their own requirements.

For NYC, the standard route takes at least seven years of qualifying experience, including two years as a registered journeyman. Then come the exams, background check, business paperwork, and licensing fees.

Do You Need a Plumbing License in New York?

If you’re running a plumbing business, check the licensing rules where the job is located. New York doesn’t issue a single license that covers the whole state.

Working under a licensed plumber is different from taking jobs under your own name. Apprentices and helpers may work under the required supervision, but independent contractors need the credentials their local authority requires.

Who can pull plumbing permits? That depends on the municipality. In NYC, regulated plumbing permits are handled through the licensed Master Plumber system. Buffalo’s rule is explicit: plumbing permits are issued to City of Buffalo Licensed Master Plumbers, with a limited exception for qualifying resident homeowners.

Check three things before bidding work in a new area:

1. Which license or registration the municipality requires.
2. Whether your current license is accepted.
3. Who can apply for the plumbing permit.

A license that’s good in one town may not get you through the permit counter in the next.

How to Become a Licensed Plumber in New York

Most plumbers start by learning the trade under supervision. From there, the route depends on where they plan to work and whether they want to become a journeyman or run their own business.

Start as an apprentice or plumbing helper

You can start with supervised plumbing work or a qualifying training program. You’ll learn installation, repairs, maintenance, drawings, codes, and how jobs are handled on site.

Keep your employment records. Names of supervisors, dates, hours, and the type of work you performed all matter when it’s time to prove your experience.

Seven years later is a bad time to discover you can’t get hold of an old supervisor.

Become a journeyman plumber in NYC

New York City has a separate journeyman plumber registration process.

The DOB provides two main routes:

• Five years of qualifying full-time plumbing experience under the direct and continuing supervision of a licensed Master Plumber or equivalent, including at least one year in NYC.
• Completion of a qualifying New York State registered training program, plus one year of NYC plumbing experience.

You’ll also need to meet the DOB’s other eligibility requirements and provide employment records, identification, and supporting documentation.

The registration fee is $50. Applications go through DOB NOW: Licensing.

Journeyman registration lets you establish your qualifications, but it doesn’t authorize you to operate independently as an NYC Master Plumber.

Check the NYC journeyman registration requirements.

What license do you need after trade school?

Finishing plumbing trade school doesn’t automatically make you a licensed plumber.

A qualifying training program can count toward certain registration pathways. You’ll still need the required work experience and paperwork.

If your goal is to own a plumbing business, check the Master Plumber requirements early. The experience you build now needs to qualify when you’re ready to apply.

How to Get a NYC Master Plumber License

The NYC Department of Buildings (DOB) handles Master Plumber licensing across the five boroughs.

You’ll need qualifying experience, a written exam, a practical exam, a background investigation, and the required business documentation.

Step 1: Meet the experience requirements

Applicants must be at least 18, able to read and write English, physically fit to perform the work, and meet the DOB’s character requirements.

The DOB recognizes five experience pathways. Qualifying supervised experience must involve plumbing installation and planning or design under the direct and continuing supervision of a licensed Master Plumber in the United States.

Path 1: Seven years of supervised plumbing experience

At least seven years of qualifying experience within the previous 10 years, involving plumbing installation and the planning or design of plumbing systems under a licensed Master Plumber.

At least two years must be as a registered journeyman plumber under the applicable NYC requirements.

Path 2: Engineering degree plus experience

A bachelor’s degree in mechanical engineering or appropriate engineering technology from a college or university registered by the New York State Department of Education, plus five years of supervised plumbing experience within the previous seven years.

At least two years must be in NYC.

Path 3: Licensed architect or professional engineer

A New York State-licensed Registered Architect or Professional Engineer with at least three years of qualifying supervised plumbing experience within the previous five years.

At least one year must be in NYC.

Path 4: City-agency maintenance experience

Seven years of qualifying experience within the previous 10 years, including at least two years of plumbing installation and planning or design under a licensed Master Plumber.

The balance may include plumbing maintenance, replacement, and repair work on existing buildings while employed by a city agency.

The installation and planning experience must meet the DOB’s registered journeyman requirements.

Path 5: Plumbing inspection experience

Qualifying plumbing inspection work as an employee of a government agency, private inspection agency, or another eligible entity may count toward the experience requirement.

The DOB credits eligible inspection experience from the 10 years before applying at 50%, up to 2.5 years. The remaining experience needed to reach seven years must meet the supervised plumbing installation and planning or design requirements above. That remaining experience is not subject to the 10-year lookback.

This route doesn’t state a separate NYC-specific experience requirement.

Check the DOB’s full eligibility rules before applying. The details matter, especially if your experience includes engineering, inspections, or city-agency work.

Step 2: Pass the written exam

The written Master Plumber exam tests your knowledge of NYC Construction Codes, rules, and regulations.

It’s multiple choice, with a 70% passing score. Reference materials aren’t allowed.

Apply and pay through the DOB NOW Public Portal. Once your application is accepted, the exam administrator typically sends scheduling instructions within two to three weeks.

The written exam fee is $585.

Step 3: Pass the practical exam

After passing the written exam, apply separately for the practical exam.

The fee is $530.

You have 24 months from your written examination notification to pass the practical exam.

If you pass, results are usually mailed about three to four weeks after testing. Keep the notification and results letter. You’ll need them for the next stage.

Step 4: Submit your background application

Passing the exams doesn’t finish the job.

The DOB needs proof of your experience, identity, and qualifications.

You have one year from the practical examination notification to submit your background application. Missing that deadline can mean starting over.

The required paperwork includes:

• Passing exam documentation.
• LIC62 Physical Examination Form, fully completed by a physician within 90 days before submission, with the physician’s stamp.
• Experience Verification Forms signed by the supervisors who oversaw your work.
• Detailed Social Security History of Earnings, requested by company name.
• Government-issued photo identification and Social Security card.
• Latest pay stub and/or W-2.

Supervisor verification matters. A form completed by HR or by the applicant won’t replace the required supervisor’s statement.

Master Plumber applications are submitted through DOB NOW: Licensing. The DOB stopped accepting paper and walk-in submissions for this process on February 23, 2026.

Get the documents together before the deadline. Chasing down years of employment records can take longer than expected.

Step 5: Meet the business requirements

You must be an officer, partner, or sole proprietor of a qualifying business with an approved NYC location that meets the DOB’s zoning requirements.

A corporation or LLC isn’t mandatory. Sole proprietors can qualify, provided they submit the required affidavit and accept personal liability for violations and fines.

The paperwork depends on how your business is set up.

For corporations, the applicant generally needs at least 51% ownership. Where other licensed Master Plumbers hold shares, their combined licensed ownership must meet the DOB’s 51% requirement.

You’ll also need general liability, workers’ compensation, and disability insurance, plus the DOB’s required telephone-bill and business-location documentation.

The DOB Master Plumber application instructions specify the documents for each business structure.

Step 6: Collect your license card

Once the DOB approves your application, follow the instructions in DOB NOW to finish licensing and collect your card.

You have one year from DOB NOW approval to pick it up.

Miss that deadline and the application automatically closes as a denial. You’ll need to restart the process.

What if your application is denied?

Some denials can be reconsidered if you have additional information or documents that address the DOB’s concerns.

Eligible reconsideration requests must reach the DOB within 60 days of the denial notification.

Not every denial can be appealed this way. Automatic denials for failing to respond to objections on time are final under the DOB’s rules.

Read the denial notice and follow the official reconsideration procedure.

How Much Does a Plumbing License Cost in New York?

Fees depend on the municipality. NYC charges separately for examinations, licensing, and the Master Plumber seal.

NYC Master Plumber initial fees

That’s the listed DOB total. It doesn’t include training, obtaining records, insurance, or setting up your business.

NYC Master Plumber renewal fees

See the DOB fee schedule for current charges.

How Long Does It Take to Get a Plumbing License?

For the standard NYC Master Plumber route, you need seven years of qualifying experience, including two years as a registered journeyman, before applying.

Other DOB eligibility routes have different experience requirements.

Once you qualify, the exams and application process have their own timelines.

Some are processing estimates. Others are firm deadlines.

Plan for both. A missing employment record or an expired application window can hold up the license even after you’ve passed the exams.

Plumbing License Requirements Outside NYC

New York’s local licensing rules vary. A credential from NYC won’t automatically qualify you for work in Nassau, Westchester, Buffalo, or another jurisdiction.

Nassau County and Long Island

Nassau County confirms that plumbing licensing is handled through local municipalities, including the Town of Hempstead, Town of North Hempstead, and Town of Oyster Bay.

Long Beach, Glen Cove, and incorporated villages may have separate requirements.

Check the municipality where the job is located before applying for a license or permit.

Nassau County Tri-Town reciprocity

The Towns of Hempstead, North Hempstead, and Oyster Bay participate in reciprocal plumbing licensing arrangements.

Qualifying license holders may apply through the reciprocal process instead of taking another examination. Applicants still have to meet the receiving town’s requirements.

North Hempstead’s current Town Code allows qualifying applicants with a principal place of business in Nassau or Suffolk County to seek an examination waiver when they hold the required credentials from a Nassau municipality with a reciprocal agreement. An application, certificate of competency, and certified current license are still required.

Read North Hempstead’s current plumbing reciprocity provisions and confirm which process applies to your town, city, or village credential before applying.

Suffolk County

Suffolk County Consumer Affairs issues Master Plumber and Restricted Plumber licenses. Requirements also depend on the town or other local authority responsible for the work.

Check whether the jurisdiction requires a plumbing contractor license, registration, or another credential, and whether it recognizes a license issued elsewhere.

Don’t book the work based on a Nassau or NYC license alone.

Westchester County

Westchester County distinguishes between countywide and restricted Master Plumber credentials.

A Countywide Master Plumber can perform plumbing work across Westchester County municipalities under the county’s licensing rules.

A Restricted Master Plumber is limited to the municipalities specified by that credential.

Westchester also has journey-level plumbing certification.

Before applying, check which license class fits your work and what documentation, examination, bond, and insurance requirements apply.

See Westchester County’s plumbing and electrical licensing information.

Buffalo

Buffalo has its own Master Plumber and journeyman licensing system.

The city requires a Master Plumber certificate of competency and licensing for independent Master Plumber work.

A plumbing permit can only be issued to a City of Buffalo Licensed Master Plumber, apart from the city’s limited qualifying resident-homeowner exception.

That means holding a license from somewhere else doesn’t automatically let you pull permits in Buffalo.

See the City of Buffalo Plumbing Division.

Rochester

Rochester has local plumbing licensing and permit requirements.

Check Rochester’s licensed-trades information before applying or taking on regulated plumbing work. Confirm the required license class and who may obtain permits.

Syracuse and Onondaga County

Onondaga County has its own plumbing licensing system, separate from the City of Syracuse.

Under the county’s published rules, Master Plumber examination applicants ordinarily need either:

• Ten years of experience as a journeyman plumber.
• Five years as a plumbing apprentice plus five years as a journeyman plumber.

The county examining board may consider qualifying equivalent experience under its rules.

The county’s licensing page and regulations describe Syracuse coverage differently. For jobs inside Syracuse, confirm the applicable license class and city and county requirements with Syracuse’s permit office and county Plumbing Control.

See the regulations linked from Onondaga County’s current exam page and its current Master Plumber candidate requirements.

Albany

Albany has its own local plumbing licensing requirements.

Check Albany’s current license classifications and application requirements before filing. Make sure you’re using the application for the license class your work requires.

New York plumbing licensing at a glance

Can You Use a NYC Plumbing License Elsewhere in New York?

Not automatically.

Other municipalities can require separate licenses, registration, examinations, or reciprocal applications.

Nassau has specific reciprocal arrangements. Westchester has its own countywide licensing system. Buffalo requires its own Master Plumber license for plumbing permits.

Before taking a job outside your existing licensing area, check the rules for that address. Get confirmation from the local authority before promising a start date.

How to Renew a NYC Master Plumber License

NYC Master Plumber licenses run for three years.

Renew through DOB NOW: Licensing. You’ll need the required documentation, including:

• An LIC62 Physical Examination Form completed within 90 days before renewal.
• Proof of the required seven-hour continuing education course.
• Payment of the applicable renewal fees.

The DOB recommends submitting your renewal application 30 to 90 days before your license expires.

Late applications can mean extra fees. See the fee table above and the official renewal instructions.

Running Your Plumbing Business After Licensing

Once you’re licensed and taking jobs, you’ve got estimates to send, crews to schedule, invoices to chase, and customer records to keep straight.

Cinderblock’s plumbing contractor software keeps estimates, schedules, invoices, and job details together so you’re not digging through different places for the information you need.

If you also take on electrical work, licensing rules can be different. See our New York electrical licensing guide for the requirements that apply to that trade.

This article is for general informational purposes only and does not constitute legal advice. Licensing requirements can change. Consult the relevant licensing authority or a qualified attorney for guidance specific to your situation.