Plumbing Licenses in Onondaga County, and the City Line
Ask to see the registration card. Onondaga County requires plumbers working in the county to be licensed and registered with the Water Environment Protection Plumbing Control Division, and registered plumbers of every experience level must carry that card on them on site as identification for plumbing inspectors and property owners. The one thing not to assume is which class of license covers an address inside the City of Syracuse: the county's own published documents describe that boundary in two different ways, and Plumbing Control answers that question on 315-435-6614.
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The check you can make at the door in ten seconds
Onondaga County Water Environment Protection states that plumbers working in the county must be licensed and registered with the WEP Plumbing Control Division, and that registered plumbers of all experience levels must have their registration card on them as a means of identification for plumbing inspectors, property owners and others while on the work site. That card exists for you as much as for the inspector, and asking to see it is neither rude nor unusual. There is a second visible sign: section 2.8 of the county requirements makes the license holder responsible for placing plumbing license decals obtained from Onondaga County WEP on each side of every commercial vehicle used in the business, excluding excavation equipment, and requires the license holder or a registered Journeyman Plumber to be present during any installation the contractor is responsible for. If you would rather check before anyone arrives, Plumbing Control publishes a master list of licensed plumbers in the county, operates from the Metro Syracuse Treatment Facility administration building at 650 Hiawatha Boulevard West and answers on 315-435-6614.
What a county license takes, and why New York has no statewide one
There is no single New York State plumbing license to hold. General City Law section 44 gives locally constituted examining boards of plumbers the power to examine everyone intending to engage in the trade, to issue certificates of competency to those who pass, and to formulate rules with the local board of health governing materials and workmanship, and Onondaga County cites that section as the authority for its own Examining Board. Under it, a plumber seeking a Journeyman or Master license here must pass an exam and receive a Certificate of Competency from the Onondaga County Examining Board for Plumbers, then renew the license and registration annually with WEP Plumbing Control and comply with the board's insurance requirements. The experience thresholds are not token: a Journeyman candidate needs at least five years in the trade, and a Master candidate ten years as a Journeyman, or five as a Journeyman and five as an Apprentice. The renewal calendar is published too, with annual application deadlines of May 15 for apprentices, March 15 for journeymen and January 15 for masters, late fees after the deadline and multiple fees where a registration has lapsed for more than a year. A card in date is therefore a card somebody paid attention to this year.
The city line, and the one thing this page will not tell you is settled
Here is where the honest answer is that the published documents disagree, and you should have that rather than a tidy sentence. On its licensing and registration page, Onondaga County WEP states that Master Plumbers can own and operate plumbing businesses provided the Master license is current and active, and gives the scope of that license in parentheses as Onondaga County, except the City of Syracuse. The county Examining Board's own requirements document puts the exception somewhere else: section 2.3 says a Master Plumber's License enables the holder to conduct the business of plumbing in any municipality within Onondaga County, while a Plumbing Contractor's License Class B, issued only to people who already held a Certificate of Competency before January 1, 1967, covers any municipality within the county except the City of Syracuse, and a Class C license, closed to new applications after December 31, 1968, is limited to the county exclusive of the city and excludes installations connecting to a public sewer. Those two descriptions put the city exception on different licenses. What is not in dispute is that city work runs through the county for permits: the City of Syracuse Water Department's own application aid says the permit number for a domestic water service in the city is pulled by the plumber from Onondaga County Plumbing Control on 315-435-6614, and that a licensed plumber is required to obtain the permit and do the work in the city. Section 3.1.D adds that every county permit is subject to the requirements of the municipality where the installation is made. If your house is inside the city line and you want the class question answered rather than argued, call Plumbing Control on that number and ask them.
Only a permit holder can take out the permit, and doing it for somebody else is an offense
Onondaga County Local Law No. 9 of 1988, as amended by Local Law No. 6 of 2004, provides that only persons holding a Certificate of Competency from the county Examining Board as Master Plumbers or Plumbing Contractors Class B or Class C, and duly licensed as such by the Department of Water Environment Protection, may obtain permits for installing plumbing in Onondaga County, and that any person who obtains a permit for another individual, partnership or corporation violates the local law. The penalties are real: an offense on conviction carries a fine of up to 500 dollars or imprisonment for up to 100 days or both, for each and every offense, with a civil penalty of up to 500 dollars per violation available instead, and any permit issued may be suspended or revoked after a hearing before the Commissioner of Water Environment Protection on ten days notice. The practical consequence for a homeowner is simple. The permit belongs to the person doing the work, it is not a favor anyone can do on your behalf, and a contractor who suggests working under somebody else's permit is describing a violation rather than a shortcut. This site arranges introductions to licensed contractors and never obtains permits itself; the permit is the license holder's to take out and to answer for.
Insurance is filed with the county, and digging needs an extra line on it
The insurance behind a plumbing license here is not a claim on a truck door, it is a document on file. Section 3.2 of the county requirements states that every licensed plumbing contractor actively working in Onondaga County must keep certificates of insurance on file with Plumbing Control, naming Plumbing Control as a certificate holder, covering public liability of 1,000,000 dollars, property damage of 50,000 dollars each accident with a 100,000 dollar aggregate, and New York State workers compensation. There is a second requirement that matters the moment a job leaves the foundation wall: anyone intending to excavate to install sewers or water lines must furnish proof of insurance for underground operations, the U Hazard, to Plumbing Control. Changing a fixture and opening a trench across a front yard are different risks, and they are covered by different lines on that certificate. Asking whether the underground cover is on file is a fair question before anyone breaks ground, and it is answerable rather than a matter of opinion.
Where no license and no permit are needed, including work you can do yourself
Not everything needs any of this, and the county draws that line clearly too. Plumbing Control states that the only instance where a plumbing permit is not required is where a fixture such as a faucet or shower head is replaced with one that has the same flow rating as the original, and lists the repair or replacement of a faucet, flush valve, supply tube, individual fixture stop, toilet fill valve or flushing mechanism that is in kind to what you currently have as work needing no permit. Beyond that, an owner occupant of a single family home can take out a homeowner plumbing permit and do interior work personally: apply in person, complete and sign the request form, furnish proof of ownership and owner occupancy, submit the New York State Workers Compensation Board WC/DB-100 affidavit, provide plans showing all drainage and vent lines piped and sized to code, be ready to answer questions on piping materials, fittings, tub and shower faucets, solder and inspection procedures, and pay the current fees. Only the individual homeowner may install what that permit covers, and anything to be concealed must be inspected before it is covered. The permit stops at the foundation: homeowners are prohibited from any type of plumbing work outside the house. So the honest summary is that a faucet is yours, a bathroom can be yours if you are willing to be examined on it, and the pipe in the yard is not available to you at any price.
Three questions worth asking before work starts
Ask to see the registration card and check the name on it against the person holding the wrench, since the county requires the license holder or a registered Journeyman to be present during any installation the contractor is responsible for. Ask who is taking out the permit and in whose name, because only a Certificate of Competency holder may obtain it and doing so for another party is itself a violation. And where the job involves an excavation, ask whether the underground operations cover is on file with Plumbing Control alongside the public liability, property damage and workers compensation certificates the county already requires. Three questions, all answerable on the spot, and all of them checkable afterward with one phone call to 315-435-6614. When you would rather have the checking done before anyone is standing in your basement, tell us what the job is and we will put you in front of licensed, insured contractors who work under their own permits.
Sources used in this guide


Onondaga County Water Environment Protection states that plumbers working in Onondaga County must be licensed and registered with the WEP Plumbing Control Division, and that registered plumbers of all experience levels must have their registration card on them as a means of identification for plumbing inspectors, property owners and others while on the work site.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
Section 2.8 of the county Requirements for Implementation makes the license holder responsible for placing plumbing license decals obtained from Onondaga County WEP on each side of all commercial vehicles used in the business, excluding excavation equipment. Section 2.8 also requires the license holder or a registered Journeyman Plumber to be present during any installation the contractor is responsible for.
Source: Onondaga County Examining Board for Plumbers, accessed 2026-09-13
Onondaga County Plumbing Control oversees all regulatory plumbing requirements within Onondaga County, including applications, registration and licensing for plumbing professionals and permit issuance for installations, and its inspectors conduct on site reviews of pipework, installations and grease traps. It publishes a master list of licensed plumbers in Onondaga County and operates from the Metro Syracuse Treatment Facility administration building at 650 Hiawatha Boulevard West, Syracuse, on 315-435-6614.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
To be eligible for a Journeyman or Master license and registration in Onondaga County a plumber must pass an exam and receive a Certificate of Competency from the Onondaga County Examining Board for Plumbers, and to maintain that license must renew the license and registration annually with WEP Plumbing Control and comply with insurance requirements set by the Examining Board. Journeyman candidates need at least five years in the trade; Master candidates need ten years as a Journeyman, or five as a Journeyman and five as an Apprentice.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
New York General City Law section 44 gives examining boards of plumbers, constituted locally, jurisdiction to examine all persons desiring or intending to engage in the trade, business or calling of plumbing, to issue certificates of competency to those who pass, and to formulate rules with the local board of health governing plumbing materials and workmanship. Onondaga County cites this section as the authority for its own Examining Board.
Source: New York State Senate (General City Law), accessed 2026-09-13
Onondaga County publishes a plumbing fee schedule established by the Department of Water Environment Protection and adopted by the Onondaga County Legislature. It sets apprentice plumber registration at 15 dollars, journeyman plumber registration at 25 dollars, the journeyman exam at 25 dollars, the master plumber exam at 300 dollars, a Class A master plumber license at 500 dollars and a replacement identification badge at 15 dollars. Permit fees are set per structure and each band states the number of inspection trips it includes. The licensing page adds annual application deadlines of May 15 for apprentices, March 15 for journeymen and January 15 for masters, with late fees after the deadline and multiple fees where a registration has lapsed for more than a year.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
On its Licensing and Registration page, Onondaga County WEP states that Master Plumbers can own and operate plumbing businesses provided their Master license is current and active, and gives the scope of that license in parentheses as Onondaga County, except the City of Syracuse.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
The Onondaga County Examining Board for Plumbers Requirements for Implementation of the New York State Fire Prevention and Building Code, section 2.3, states that a Master Plumber's License enables the holder to conduct the business of plumbing in any municipality within Onondaga County, while a Plumbing Contractor's License Class B, issued only to people who already held a Certificate of Competency before January 1, 1967, enables the holder to conduct business in any municipality within Onondaga County except the City of Syracuse, and a Class C license, closed to new applications after December 31, 1968, is limited to the county exclusive of the City of Syracuse and excludes any installation connecting to a public sewer.
Source: Onondaga County Examining Board for Plumbers, accessed 2026-09-13
Section 3.1.D of the county Requirements for Implementation states that all plumbing permits issued by the Onondaga County Department of Water Environment Protection are subject to the requirements of the municipality in which the installation is to be made and the laws of the State of New York. Article 5 then sets out separate municipal requirements for the City of Syracuse Engineering Department and Department of Water, for OCWA and for county Plumbing Control.
Source: Onondaga County Examining Board for Plumbers, accessed 2026-09-13
The City of Syracuse Water Department application aid states that for a domestic water service in the city the plumbing permit number is pulled by the licensed plumber from Onondaga County Plumbing Control on 315-435-6614, and that a licensed plumber is required to get the permit and perform the work in the City of Syracuse. The same document warns that services may take four to six weeks to be installed after the permit is completed, so plan accordingly.
Source: City of Syracuse Department of Water, accessed 2026-09-13
Onondaga County Local Law No. 9 of 1988, as amended by Local Law No. 6 of 2004, provides that only persons holding a Certificate of Competency from the Onondaga County Examining Board for Plumbers as Master Plumbers, Plumbing Contractors Class B or Plumbing Contractors Class C, and duly licensed as such by the county Department of Water Environment Protection, may obtain permits for installing plumbing in the County of Onondaga, and that any person who obtains a permit for any other individual, partnership or corporation violates the local law.
Source: Onondaga County Legislature, accessed 2026-09-13
Onondaga County Local Law No. 9 of 1988 provides that a person or firm violating the local law or any rule under it is guilty of an offense and on conviction is liable to a penalty or fine of not more than 500 dollars or imprisonment for not more than 100 days or both, for each and every offense, that a civil penalty up to 500 dollars per violation may be recovered instead, and that any permit issued may be suspended or revoked. The Commissioner of Water Environment Protection holds hearings on 10 days notice, with the right to present evidence, cross examine witnesses and be represented by counsel.
Source: Onondaga County Legislature, accessed 2026-09-13
Section 3.2 of the county Requirements for Implementation states that every licensed plumbing contractor actively working in Onondaga County must have certificates of insurance on file with Plumbing Control naming Plumbing Control as a certificate holder, covering public liability of 1,000,000 dollars, property damage of 50,000 dollars each accident with a 100,000 dollar aggregate, and New York State workers compensation. Separately, anyone who intends to excavate to install sewers or water lines must furnish proof of insurance for underground operations, the U Hazard, to Plumbing Control.
Source: Onondaga County Examining Board for Plumbers, accessed 2026-09-13
Onondaga County Plumbing Control states that the only instance where a plumbing permit is not required is where a fixture such as a faucet or shower head is replaced with one that has the same flow rating as the original, and lists the repair or replacement of a faucet, flush valve, supply tube, individual fixture stop, toilet fill valve or flushing mechanism that is in kind to what you currently have as not requiring a permit.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
To obtain a homeowner plumbing permit in Onondaga County the applicant must apply in person, complete and sign a Homeowner Plumbing Permit Request form, furnish proof of ownership and that the home is an owner occupied single family dwelling, submit the New York State Workers Compensation Board form WC/DB-100 affidavit, submit plans showing all drainage and vent lines piped and sized to code, be prepared to answer questions on piping materials, fittings, tub and shower faucets, solder and inspection procedures, and pay the current permit and plan review fees. Any piping to be concealed must be inspected before covering, and a final inspection follows completion.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
The Onondaga County Homeowner Plumbing Permit conditions state plainly that homeowners are prohibited from doing any type of plumbing work outside the house, giving water services and building sewers as the examples, and that only the individual homeowner may install the permitted work, so the homeowner is expected to demonstrate the knowledge necessary to undertake the installation. The county's forms page describes the same permit as covering additions or alterations by an owner occupant to the plumbing inside their single family home.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-13
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