How to Start a Plumbing Business in Vermont: DPS Fire Safety License ($120 Master, $90 Journeyman, $50 Specialist) and Almost No Homeowner Exemption

Vermont's plumbing trade is small but steady. The Census Bureau's 2023 data counted 303 plumbing, heating and air-conditioning contractors with employees in the state. If you want to join them, the first thing to understand is that Vermont treats your license and your company as two separate filings. You personally are licensed by the Department of Public Safety, Division of Fire Safety, not by the Office of Professional Regulation (OPR). The company is formed with the Secretary of State. This guide covers both tracks in the order that avoids the most rework, plus the tax, local, and lead rules that catch new owners off guard.

This article is informational only. It is not legal or tax advice. Fees, deadlines, and rules change, so confirm every figure with the agency named before you file or pay. For decisions about ownership structure, employees, or tax position, talk to a qualified Vermont attorney or CPA.

If you are searching for how to start a plumber business in Vermont, the sequence below is the one that works. Start with the license, because it controls what work you can legally sell, then form the entity and set up taxes and local permits.

What You Need Before You Start

• Your plumbing license, or the verified experience and exam results needed to apply for one
• A business name that ends in an approved designator, such as LLC or Limited Liability Company
• A registered agent who is a Vermont resident or a business with a place of business in Vermont
• $155 for the filing fee on Articles of Organization (LLC) or Articles of Incorporation (corporation)
• $25 if you want to reserve your name before filing
• A federal Employer Identification Number (EIN) from the IRS
• Insurance quotes and a list of the tools and vehicles you will use on jobs
• A calendar that tracks your license renewal, state annual report, and tax deadlines

Step 1: Get the Right Plumbing License

Vermont plumbers are licensed by the Division of Fire Safety with the Plumbers' Examining Board under 26 V.S.A. chapter 39. Plumbing is not an OPR license. Most people starting a company apply for a master or journeyman license, and some add specialist credentials. Every plumbing license is issued for two years, and renewal uses the same fee.

License class	What you must show	Two-year initial and renewal fee
Master plumber	12 months working as a journeyman or equivalent, plus passing the exam	$120
Journeyman plumber	An apprenticeship verified by the Vermont Apprenticeship Council or an equivalent record, plus passing the exam	$90
Specialist: P1 water heaters, P2 hydronic heating up to 15 PSIG steam, or P3 water treatment	A license in the specialty you will perform	$50

A specialist business may employ only people licensed in that same specialty. Before you hire anyone, confirm which license each crew member needs with DFS Licensing at 802-479-7564.

Keep your renewal on track. Each two-year cycle requires 8 hours of continuing instruction. If your license lapses, reinstatement within 90 days adds $15. After 90 days, the Board must approve reinstatement. Ask DFS for the current application forms and exam schedule before you commit to a start date.

Step 2: Confirm the Homeowner Exemption (It Is Narrow)

The statute requires a license for all plumbing work, with a few narrow exceptions. Those exceptions cover an owner or the owner's employees working in an owner-occupied, freestanding single-family home and its outbuildings, farm buildings on owner-occupied farms, and a property owner's own maintenance employee. None of them reaches rental properties or other people's homes. If you plan to take customer work, you need a license.

DFS also states that its rules cover public buildings and buildings connected to public water or sewer. DFS has said those rules do not generally reach owner-occupied single-family homes on private water and septic. That distinction matters for much rural work, but treat it as a question for DFS, not as permission. Call DFS Licensing at 802-479-7564 before doing any unlicensed work, and ask for the answer in writing if you can get it.

The penalty for unlicensed plumbing work, or for advertising as a plumber without a license, is a fine of up to $1,000 per offense.

Step 3: Choose Your Entity

For a plumbing company, the two common choices are an LLC and a corporation. Both file for $155 with the Secretary of State. The differences show up in annual costs and tax treatment.

Item	LLC	Corporation
Formation document	Articles of Organization, $155	Articles of Incorporation, $155
Annual report	$45, due by March 31 for a calendar-year LLC	$60, due by March 15 for a calendar-year corporation
Vermont tax	A $250 minimum entity tax applies to LLCs taxed as partnerships or S corporations. It does not apply to a disregarded single-member LLC.	Corporate income tax on Form CO-411, graduated from 6.0% on the first $10,000 of net income to 8.5% above $25,000, with a minimum tax tied to gross receipts

Many solo plumbers form a single-member LLC. Under the default federal rules, a single-member LLC is disregarded for income tax purposes, which is one reason the Vermont $250 entity tax does not apply to it. Whether an LLC or a corporation fits your income and growth plans is a question for a Vermont CPA.

Step 4: Check and Protect Your Name

An LLC name must end with Limited Liability Company, LLC, Ltd. Liability Co., Limited Company, LC, or Ltd. Co. Search the Secretary of State's business database at https://bizfilings.vermont.gov/business/businesssearch before you choose a name. If you need time, file an Application for Reserved Name for $25. A reservation lasts 120 days and can be renewed.

If you will operate under a trade name that differs from your entity name, such as a brand painted on your van, you need an Assumed Business Name Registration. It costs $70 to register and $65 to reregister, and it must be renewed every five years. File it with the Secretary of State's Business Services Division at https://sos.vermont.gov/business-services/business-filings/assumed-name.

Step 5: Name a Registered Agent

Every Vermont LLC must designate and continuously maintain an agent for service of process. The agent's name, email, and address must be on file with the state. Under 11 V.S.A. 1655, the agent is either an individual who is a Vermont resident or a business organization with a place of business in Vermont and authority to do business here. The LLC's designated office does not have to be in Vermont.

If you live in Vermont, you may be able to serve as your own agent. If you live outside the state, you will need a business organization with a Vermont place of business to serve. Commercial agent prices vary by provider, so compare quotes before you sign. Changing your agent later requires a Statement of Change, which costs $35 for an LLC and $25 for a corporation.

Step 6: File the Articles

File through the Online Business Service Center at https://bizfilings.vermont.gov/homepage. Online filings are normally processed in less than one business day. The Secretary of State's fee schedule lists no expedited processing fee, so online filing is the fast path and costs no more than filing by mail. Mailed filings take 7 to 10 business days. Current fee and statute information is at https://sos.vermont.gov/business-services/fees-statutes/.

Step 7: Set Up Your Tax Accounts

Get your EIN from the IRS before you open a business bank account or hire anyone. Vermont's sales tax is simpler for a plumber than many readers expect. The 6% sales tax applies to goods and a short list of items, and it reaches almost no services. Labor by plumbers is not taxed. Contractors pay tax on the materials they buy and do not charge it to customers. You generally will not add sales tax to a repair invoice, but you will pay tax on the parts you buy.

You need a Department of Taxes business tax account when your business collects a tax you must remit or withholds from employee wages. Register at https://tax.vermont.gov/business/register. A plumber who only buys materials and hires no one may not need an account on day one, but confirm your situation at https://tax.vermont.gov/ before you send your first invoice. Once you hire employees, set up withholding with the Department of Taxes.

Step 8: Check Local Zoning and Licenses

Vermont has no general statewide business license. Towns, cities, and villages hold zoning and local licenses, and their rules differ widely. Vermont's 14 counties have no licensing or zoning role, so you do not need to visit a county office. Call the town clerk and the zoning administrator where your shop or home office sits. Ask whether you need a home occupation permit, a sign permit, or a local business registration.

Vermont also has no general contractor license. Plumbing work within DFS scope does not require OPR contractor registration. Under 26 V.S.A. 5502, a DFS-licensed plumber working within scope needs no separate OPR registration. If you also do remodeling or other residential contracting, OPR registration applies to residential contractors on jobs over $10,000. Check that rule before you bid on mixed-trade projects.

Step 9: Follow the Work Notice and Lead Rules

Before you start regulated work, file a work notice with DFS. For priority work, the notice fee is $10 per fixture, with a $50 minimum. For each water heater, hydronic unit, or treatment device, the fee is $15. Non-priority work carries a $50 notice fee. Ask DFS to confirm which jobs count as priority work and how to file the notice before your first job, because the category determines the fee.

Vermont's Act 193 lead limits also apply to your materials. Solder and flux containing more than 0.2% lead are prohibited. Fixtures with a weighted average lead content above 0.25% are also prohibited. Penalties can reach $10,000. Buy from suppliers who can document lead content, and keep those records with your job files.

Step 10: Build a Compliance Calendar

Put these dates on your calendar the day you form the entity:

1. Plumbing license renewal every two years, with 8 hours of continuing instruction in each 24-month period
2. LLC annual report of $45, due by March 31 for a calendar-year LLC, or corporation annual report of $60, due by March 15 for a calendar-year corporation
3. The $250 minimum entity tax for eligible pass-through entities, paid with Form BI-471 or BI-476 along with the business income tax return
4. Form CO-411 if you file as a corporation
5. Assumed name renewal every five years, if you use a trade name
6. A Statement of Change for your registered agent whenever the agent or address changes

A missed annual report terminates your entity. Vermont does not use administrative dissolution, so a terminated entity can be reinstated, but the delay can disrupt contracts, bank relationships, and bonding. Confirm the reinstatement steps with the Secretary of State if it happens.

Common Mistakes to Avoid

• Assuming the homeowner exemption covers a rental property or a customer's home. It does not.
• Advertising as a plumber before you hold a license. Advertising without one is an offense under the statute.
• Hiring someone without checking which license class the work requires. A specialist business may employ only people licensed in that specialty.
• Charging sales tax on labor, or skipping tax on materials you buy. Labor is not taxed, and materials are taxed when you buy them.
• Giving your sales tax account number when a resale exemption applies. The resale exemption requires Form S-3 from the buyer.
• Naming a registered agent who does not meet the Vermont residency or place-of-business rule.
• Missing the March annual report deadline, which terminates the entity until it is reinstated.
• Letting your license lapse. After 90 days, reinstatement requires Board approval.
• Buying fixtures or solder without checking lead content.
• Assuming a state license covers local rules. Zoning and local licenses sit with your municipality.

What Results to Expect

Working through these steps in order may help you move from application to a formed entity quickly. Online entity filings are normally processed in less than one business day, while your DFS license timeline depends on your experience, exam schedule, and paperwork. Many new owners find the license is the slowest part of the process, not the entity filing. Completing the license and entity steps before you advertise may help you avoid the most common compliance problems, though results depend on your own circumstances and how carefully you follow each deadline.

Next Steps and Where to Get Help

• Secretary of State, Business Services Division: https://sos.vermont.gov/business-services/
• Business search: https://bizfilings.vermont.gov/business/businesssearch
• Department of Taxes: https://tax.vermont.gov/
• Vermont Small Business Development Center (VtSBDC): https://www.vtsbdc.org/
• SBA Vermont district office information: https://www.sba.gov/district/vermont
• DFS Licensing, Division of Fire Safety: 802-479-7564

Before you choose an entity or sign an operating agreement, talk to a Vermont business attorney. Before you pick a tax structure or hire your first employee, talk to a Vermont CPA. This article is informational content, not legal or tax advice, and it does not replace a review of your specific situation by a qualified professional.