Virginia plumbing contractor license: what your Class A, B or C license lets you do, and your first 30 days

Published November 3, 2026 · Law checked November 3, 2026

• Free to read. The 30-day checklist is also a free printable (Google Docs, Word or PDF). The files come by email.
• Deepsel is our product: free estimate, invoice and scheduling software for contractors (scheduling, quotes, invoicing, card payments). The section before the FAQ says where it fits and where it doesn't.
• Not legal advice. Every rule here links to the statute, regulation or official page it comes from. Ask DPOR, your building department, your water utility or a Virginia attorney before you bet a job on my reading.

A Virginia plumbing contractor license lets your business contract for plumbing jobs over $1,000, up to the dollar limit of its class. Class C covers single jobs over $1,000 and under $30,000 (and under $250,000 of work in any 12 months), Class B goes up to $150,000 a job, and Class A has no ceiling.¹ The PLB letters on the license cover water and drain piping, fixtures, water heaters, boilers and backflow devices. They don't cover gas piping, which is its own specialty (GFC, or LPG for propane).³ And the whole license rests on one person: a master plumber (a master gas fitter for GFC) who is one of the firm's owners or officers, or works there full-time on a W-2.^3,7

Four things catch new Virginia plumbing shops before the next job. A gas water heater swap needs a permit even when it's like for like, and Fairfax County says so in those words.^8,10 The gas connection on that swap sits outside PLB.³ Class C firms working on houses in Fairfax and Prince William counties need a county license on top of the state one, with a $10,000 bond.^8,9 And backflow testing needs its own state certificate, plus a separate sign-up with each water utility: Fairfax's authorized vendor list, Virginia Beach's SwiftComply portal, Richmond's emailed form.^15,16,17,14

New masters everywhere start with the same question: "I just got my master license and im trying to figure out if i can get a raise at my company or try to go on my own, super stressful" (Reddit). If you've gone out, or a company put your card on its license, this is the Virginia side of it. Below: what your license lets you take, gas fitting, where it stops, permits, backflow and the water utilities, a "can I take this job?" table, a 30-day checklist and what crossing the line costs, each with the rule behind it. What your residential contracts must say is in Virginia home improvement contract requirements, the general contractor side (the $1,000 line, RBC and HIC) is in Virginia handyman license rules, and the electrician's side of a water heater circuit is in the Virginia electrical contractor license guide.

The 30-day checklist is also a printable: make your own copy in Google Docs (lands in your Drive), download the Word version (.docx), or download the PDF. Pick a format, enter your email and I'll send the links. It's the same list as on this page, with tick boxes and blanks for your license numbers, bond and policy numbers, permit logins and renewal dates.

Virginia plumbing license basics: the master's license and the firm's license

Virginia licenses plumbing twice, and the two licenses don't merge. The person holds a tradesman license from DPOR's Board for Contractors, as a residential plumber, journeyman or master, with gas fitting as an extra designation.^5,6 The business holds a contractor license with two parts: the class, which sets how big a job it can sign, and the classification or specialty, which sets what kind of work it can do.⁷ Fairfax County's guide for new contractors puts it in one line: "Tradesman and journeyman licenses are separate and cannot be combined with a contractor's licenses (class A, B or C) to expand the scope or dollar limits of work allowed."⁸

Sources for the table: tradesman definitions, renewal and CE,^5,6 contractor renewal and fees.³ DPOR also says that since July 1, 2026 "certain fees include a separate Technology Fee of $7.25 per year," so check the amount on your renewal notice.⁶

Who has to be named on the firm's license

• The qualified individual. For PLB this person must hold a "Master plumber tradesman license"; for GFC a "Master gas fitter license"; for LPG a master LPG fitter license. They must be "a full-time employee of the firm or ... a member of the responsible management of the firm." Full-time means at least 30 hours a week on the firm's work, paid on a W-2, and DPOR's application adds "not a 1099 employee." The experience bar is 1 year for Class C, 3 for B and 5 for A.^3,7
• The designated employee, on Class B and A only: a full-time employee or member of management who passed the Board's business exam on the firm's behalf. DPOR's application says it plainly: "there is no Designated Employee for Class C licenses." (Some guides call the master the designated employee. On DPOR's forms the master is the qualified individual.)^1,7
• Responsible management: the owners, partners, officers or LLC members. One of them completes the Board's basic business course.³

A solo master who owns the company fills every role.

One master, one company? And being someone else's master

Several states let a master stand behind only one company. I found no such sentence in Virginia's statute or the Board's rules. What limits it here is the qualifier test: the master is a full-time W-2 employee working at least 30 hours a week on that firm's work, or one of its owners or officers.³ An employee can't pass that at two firms. Nothing I read stops an owner of two companies from qualifying both. If your master leaves, you report a new qualified individual within 60 days (the change form costs $125), and a new designated employee within 120.³

If a company asks to put your master card on its license, the same test decides it: you go on its payroll full-time or into its management. A name on paper doesn't count. The Board lists "Allowing a firm's license to be used by another" and being "an ostensible licensee for undisclosed persons" as prohibited acts for the firm, and "allowing one's license or certification to be used by an unlicensed or uncertified individual" as one for you.^4,6 Whoever borrows a license commits a misdemeanor.²³ The money is real ("$25k a year is what we pay our master of record," one owner wrote, state not given, on r/Plumbing), and so is the exposure. What to charge for it and what it can cost you is a separate article.

Small jobs on the tradesman license alone

The contractor license starts at contracts over $1,000.¹ Below that, a licensed plumber can work on their own tradesman license. DPOR's tradesman application says "Any applicant performing work over $1,000 must contact the Board for Contractors," and Fairfax County says journeymen and masters "can do work under $1,000 per contract without a state contractor's license."^7,8 In Fairfax, that small-job work still needs the county's home improvement license, with a $5,000 bond.⁸

Virginia contractor license classes: your dollar ceiling

These limits are new. Before July 1, 2025, Class C stopped at $10,000 a job and $150,000 a year, and Class B at $120,000 and $750,000.² Plenty of pages still print the old numbers, including DPOR's own step-by-step guide and Prince William County's ordinance.^7,9 A Class C shop that lands a $35,000 commercial rough-in needs Class B before it signs, because working "without the proper class of license" is the same misdemeanor as working with none.²³ How the lines are counted (labor and materials together, per contract or project) is on the handyman license page.

Residential and commercial

The residential plumber license DPOR added on April 1, 2025 covers dwellings and townhouses, with "no commercial work permitted."⁶ It can't qualify a firm, because PLB needs a master, and the master exam opens after three years on the residential license (or one year as a journeyman).^3,6 Your master license and PLB cover a house and an office building alike. Watch the building type, though: Fairfax County treats apartment buildings and condos as commercial under the code, so a residential plumber can't work there.⁸

What the PLB classification covers

PLB covers "the installation, maintenance, extension, alteration, or removal of all piping, fixtures, appliances, and appurtenances" for backflow prevention devices, boilers, hot water baseboard heat, hot water heaters, hydronic systems, process piping, water supply systems in or next to a building, sanitary and storm drainage, steam heating, storage tanks and "Venting systems related to plumbing," plus liquid waste, sewerage, storm water and water supply systems.³ On the jobs that raise questions:

• Water heaters, gas and electric. The heater and its venting are PLB. The gas piping to a gas unit isn't (next section).³
• Boilers and hydronic heat. PLB lists boilers, hot water baseboard, hydronic and steam heating, so a plumbing firm can replace a hydronic boiler. HVA covers boilers too. Forced-air furnaces, heat pumps and air conditioning are not on the PLB list.³
• Backflow devices. Installing them is PLB work. Testing and rebuilding them takes a separate certificate (below).^3,6
• Drain and sewer cleaning. "Plumbing work" includes the "maintenance" of piping for sanitary drainage, and I found no exemption for clearing stoppages in Virginia's tradesman law or the Board's rules.^5,6 So treat cabling and jetting as plumbing work done or supervised by a licensed plumber. The only carve-out I found is work under $250 on a single-family home by someone who doesn't advertise as a tradesman.⁵
• Water treatment and wells. Softeners and filters sit on the water supply system, which PLB covers. Drilling a well is the WWP specialty only, but that rule "shall not exclude the PLB, ELE, or HVA classification from installation of pumps and tanks."³
• Lawn irrigation. The irrigation specialty says "The PLB and H/H classifications also provide for this function."³
• Fire sprinklers. PLB excludes fire sprinkler contracting "except for sprinklers that are tied into the domestic water supply." It may install systems designed under the plumbing provisions of the code once the installer has board-approved training. Anything else is the SPR classification, qualified by a NICET Level III technician or an engineer.³
• Septic. Tanks and drainfields are the CDS or ADS specialty, qualified by a master onsite sewage system installer licensed by a different board, the Board for Waterworks and Wastewater Works Operators and Onsite Sewage System Professionals.³
• Old lead pipe. Lead abatement is its own specialty (LAC), but PLB "may provide this service incidental to work" in plumbing.³
• Medical gas. The Board's rules have no medical gas specialty, and I didn't research what hospitals and their codes require. Ask before you bid one.

Gas fitting: its own license on both sides

Virginia splits gas from plumbing for the firm and for the person. For the firm, PLB "does not provide for (i) gas piping." Gas piping is the GFC specialty ("gas piping and appliances annexed to real property"), qualified by a master gas fitter.³ For the person, gas fitting is a separate journeyman or master designation that can sit on the same tradesman license as plumbing, with its own hour of CE on the fuel gas code.⁶ Two narrower licenses exist as well:

• LPG (propane) covers piping, tanks and appliances but "excludes hot water heaters, boilers, and central heating systems that require an HVA or PLB license."^3,5
• NGF (natural gas fitter provider) is "incidental repair, testing, or removal" only, and "does not include new installation of gas piping for hot water heaters, boilers, central heating systems."³

The gray zone is the gas water heater swap. PLB covers the heater and its venting, GFC covers gas piping and appliances, and the tradesman law lets a licensee do work that is "incidental" to their own trade, meaning "necessary for that particular repair or installation."^3,5,6 I found no rule or DPOR page that says whether reconnecting the gas to a replacement heater counts as incidental plumbing or as gas fitting. A new gas line, a longer run or a tankless upgrade that needs bigger pipe is gas piping, with no gray about it. If gas water heaters will be a big part of your work, the clean answer is GFC on the firm's license (the Board charges $125 to add a specialty, once your qualifier holds a master gas fitter license).³ Until then, get DPOR's answer in writing or sub the gas side.

If your firm holds GFC or LPG and not PLB, it's the other way round: you run the gas line and connect the appliance, and the water side of a water heater or boiler is plumbing work. Prince William County's license makes the pairing explicit: its gas fitting category "requires master gas fitter certification and master plumber or master mechanical certification."⁹

Supervision: who can work alone

A licensed residential plumber (houses only), journeyman or master can work alone. Anyone without a tradesman license, apprentices included, can do plumbing work only "under the supervision of a tradesman who is licensed in the specialty for which work is being performed."⁵ That last phrase matters on gas: a plumber without the gas fitting designation can't supervise a helper running a gas line. The Board defines supervision as guidance from a licensed tradesman who is "accessible to the helper or laborer" and periodically observes and evaluates the work, and making sure every helper gets it is the firm's job.^3,4 I found no fixed apprentice-to-journeyman ratio in the Board's statutes or regulations. Registered apprenticeship programs set their own standards, which I didn't research.

Where your license stops

• Gas piping, without GFC (or LPG for propane). See above.³
• HVAC. Forced-air furnaces, heat pumps, air conditioners and refrigerant are HVA work. Boilers sit in both PLB and HVA. The gas line to any of them is gas fitting.³
• Electrical. A new circuit for a water heater, a heat pump water heater, an electric tankless unit, or a new outlet for a sump or ejector pump is electrical work under ELE.³ Reconnecting the existing wiring to a like-for-like electric water heater is the kind of work the "incidental" rule describes, but the rule gives no list.^5,6 Keep anything new for an electrician, and agree the split in writing. The electrician's side is in the electrical license guide.
• Septic tanks and drainfields, well drilling and fire sprinkler systems outside the plumbing code, as above.³
• Lead paint in pre-1978 homes. Virginia doesn't run its own lead renovation program, so EPA's rule applies directly. Disturb painted surfaces for pay in a home built before 1978 and your firm needs EPA certification, with the work "directed by renovators certified" by EPA, unless it's minor repair. EPA's minor repair definition names plumbing and stops at "6 square feet or less of painted surface per room for interior activities or 20 square feet or less" outside. Jobs "in the same room within the same 30 days must be considered the same job," so a repipe through plaster adds up fast. The federal civil penalty is up to $49,772 per violation at EPA's January 2025 adjustment.¹⁹
• Digging. A trench for a sewer or water line counts as "excavation." Submit a Miss Utility locate request first and wait until every utility has marked or answered. Willfully skipping it makes you liable for three times the repair cost of whatever you hit, the State Corporation Commission can fine up to $10,000 per violation, and the Board lists Miss Utility failures as a prohibited act.^18,4

Virginia plumbing permits and inspections

Virginia has one building code, the Uniform Statewide Building Code (USBC), and it overrides city and county building codes.¹¹ The current edition uses the 2021 model codes, so the Virginia plumbing code is the 2021 International Plumbing Code and the gas rules are the 2021 International Fuel Gas Code. Houses and townhouses up to three stories follow the Virginia Residential Code, the 2021 International Residential Code as amended, with its own plumbing chapters.^10,16 Enforcement is local: "Enforcement of the provisions of the Building Code for construction and rehabilitation shall be the responsibility of the local building department."¹¹ So the state licenses you, and the city or county issues the permit and sends the inspector.

When you need one

A permit is required before work on a "water supply and distribution system, sanitary drainage system, or vent system," on "fuel supply systems," or on "any equipment regulated by the USBC." The exemptions that matter to a plumber:¹⁰

• "Replacement of plumbing fixtures and well pumps in all groups without alteration of the water supply and distribution systems, sanitary drainage systems, or vent systems."
• "Replacement of mechanical appliances provided such equipment is not fueled by gas or oil," in houses, townhouses and single apartment units.
• Emergencies. You can replace failed equipment first and apply "by the end of the first working day that follows the day such work commences."

If the owner asks for a permit on exempt work, the building official has to issue one.¹⁰

Water heater swaps

Owners argue about this one everywhere. One wrote "No plumber is pulling a permit to change a water heater unless someone is forcing him to do so" (Reddit, since removed). A day earlier, in the same thread, another answered "where I am at we have to submit permits to the town for all water heater replacements" (Reddit). In Virginia the code settles the gas case:

• Gas or oil: always a permit. The appliance exemption excludes anything "fueled by gas or oil." Fairfax County's Household Appliance permit page names water heaters, furnaces and boilers and says replacing a gas appliance "requires a permit, even if it is a like-for-like replacement." In a house, replacing any fuel-burning appliance also triggers a vent and chimney check: the vent must be sized to the code and clean, and where the building department doesn't inspect it, the installer certifies it.^8,10
• Electric: it depends on the locality. The state exemption covers replacement mechanical appliances not fueled by gas or oil, and whether a water heater counts is the building official's call. Fairfax lists water heaters among the household appliances whose direct replacement needs a permit, and Virginia Beach's plumbing permit form has a line for electric water heaters.^8,13 Ask each building department once and write the answer down.

Skipping a required permit also puts your license at risk. The Board lists "Failure to obtain a building permit or applicable inspection, where required" as a prohibited act for your firm and for your plumbers.^4,6

Who pulls the permit

The owner, the lessee, or "the RDP, contractor, or subcontractor associated with the work" can apply, and nobody can make you apply in person.¹⁰ Before the building official can issue it, you furnish your license number and proof your local business license taxes are paid.¹² On a job over $1,000 that's the firm's contractor license number. Fairfax County asks for a License Exemption Affidavit when no licensed contractor is listed on the application.⁸

Homeowners can pull permits for their own house. The contractor law exempts work on one primary residence the owner lives in, and tradesman licensing covers only work "for the general public for compensation."^12,5 Fairfax lets owners pull plumbing permits in their own name but "strongly" recommends a licensed contractor do it.⁸ If a customer offers to pull the permit to save you the fee, remember that exemption covers the owner's own work. You're still working for pay, so your licenses and the Board's permit rule still apply to you.⁴

Inspections

The local building department inspects. Plumbing has to be inspected "prior to concealment," so a rough-in waits for the inspector before the drywall goes up. The department may waive an inspection when the construction cost is under $2,500, at its discretion.^10,11

Fairfax, Prince William, Virginia Beach, Richmond and the rest

• Fairfax County. Permits go through the county's PLUS portal. A Residential Plumbing permit covers new or disconnected sewer and water connections and new, replaced or repaired plumbing equipment and fixtures; a Household Appliance permit covers the direct replacement of an appliance, gas included, with one final inspection, as long as no new gas piping goes in. Trade permits come "after the associated building permit is issued," some need "wastewater and/or health approval" first, and jobs in the towns of Clifton or Vienna need the town's approval too.⁸ Class C contractors also need a county Home Improvement Contractor license: two business references, your DPOR number, your Fairfax BPOL number, "Your standard contract template," a financial statement, and a surety bond of $10,000 for contracts over $1,000 ($5,000 under). It lasts one to two years, depending on the bond.⁸
• Prince William County. Its home improvement license has a Plumbing category that "requires master plumber certification," a Gas Fitting category that needs a master gas fitter plus a master plumber or master mechanical, and a $10,000 surety bond. Class A and B contractors are exempt; the county's sheet says Class C contractors need it "if the work being performed is residential."⁹ The ordinance copy on the county site is codified through 2012 and still uses the old $10,000 Class C limit, so call Building Development (703-792-6930) to confirm the current rules.
• Virginia Beach. The city's plumbing permit application (revised January 2026) asks for your state registration number, the contract value and, for conversions, a Public Utilities receipt number. It has lines for gas and electric tank and tankless water heaters, backflow assemblies, sump pumps, and interior and exterior water and sewer line replacement, rerouting and lining. Grease traps need an approved site plan.¹³
• Richmond. The Department of Public Utilities is also the water, sewer and gas utility. Its Development Services group "handles the installation of new gas, water, sanitary and storm sewer services" and inspects backflow preventers. The New Services Team is at (804) 646-8544.¹⁴
• Everywhere. Every locality can charge the BPOL business license tax, and state law lets any locality require its own home improvement license from contractors other than Class A.^12,22 I checked only Fairfax and Prince William for one. Ask the building department and the Commissioner of the Revenue in each new city or county.

Virginia backflow certification and your water utility's rules

Installing a backflow assembly is plumbing work. Testing one, inspecting it, or rebuilding it to put it back in service is "backflow prevention device work," and that needs a DPOR backflow prevention device worker certification.^5,6 The statute still calls the state program voluntary, but Virginia's Waterworks Regulations say "Starting January 1, 2023, persons testing and repairing backflow prevention assemblies and backflow prevention devices shall be certified" through it, and DPOR calls certification of its trades "mandatory, not optional."^15,6

• Getting it: four years of practical experience in water distribution systems and 32 hours of board-approved training (or seven years and 16 hours), training that includes a wet lab, and the exam. The certificate lasts two years, renews for $110, and has no CE requirement.⁶
• What it doesn't cover: swapping a failed device for a new or rebuilt one is outside "backflow prevention device work," so that's plumbing, with a permit.⁶
• Claiming the title without it: anyone who "represents himself as a certified backflow prevention device worker without holding such a certificate" commits a Class 1 misdemeanor.⁵

Each water utility then runs its own program. The three big ones:

• Fairfax County and Fairfax Water. Testers must be on the county's authorized vendor list: complete the "Authorized Vendor Application" on the cross-connection page. Each property gets an assigned testing month, the tester submits the county's test report "within 10 business days of the test date," and test gauges are calibrated at least once a year. Installing or replacing an assembly needs a plumbing permit "even when you are replacing 'Like for Like'," and the annual test needs no permit.¹⁶
• Virginia Beach. Public Utilities takes test reports only through SwiftComply: "Test forms are no longer distributed by Public Utilities." Each tester requests an account and submits their certification and test kit information.¹⁷
• Richmond. The tester fills in the city's form and emails it to Public Utilities, and DPU inspects any device that's installed, replaced or relocated (804-646-8544). The city's FAQ says "Most single-family residences are not required to have a backflow prevention device"; commercial, industrial and some multi-family service lines are.¹⁴

The test itself is the small part of the money. A Las Vegas owner put it this way: "testing is ok, but repairs and replacements are where the money is really at" (Reddit). In Virginia those repairs and replacements are plumbing work your PLB license already covers. For any other water utility, ask for its cross-connection program before your first test.

Can I take this job? A table for Virginia plumbing contractors

The verdicts assume your firm holds Class C or higher with PLB, the contract fits your class, and a licensed plumber does or supervises the work.

Sources for the table: classes and classifications,^1,3 incidental work and backflow work,^5,6 permits and inspections,¹⁰ local rules,^8,9,13 water utilities,^14,15,16,17 Miss Utility,¹⁸ lead,¹⁹ BPOL,²² wrong class.²³

Your first 30 days: a checklist for a new Virginia plumbing contractor

This is the same list as the printable. Week 1 keeps you legal on the next job. The rest keeps a water heater swap or a backflow job from stalling on a permit or a utility portal.

Week 1: licenses and paperwork

1. Look up your firm and your master on DPOR's License Lookup. Write down the firm's class, its letters (PLB, plus GFC or LPG if you have them), both license numbers and both expiration dates.⁷
2. Check your master meets the qualifier rule: a full-time W-2 employee working at least 30 hours a week, or an owner or officer.³
3. Decide on gas. Either your qualifier gets the master gas fitter license and you add GFC ($125), or you line up a GFC contractor for every gas connection.³
4. Register the business with the State Corporation Commission if it's an LLC or corporation. If you trade under any name other than your own legal name, file an assumed name certificate with the SCC clerk.^8,21
5. Get the BPOL business license from the Commissioner of the Revenue where your office is. Fairfax wants it within 75 days of starting, and another city or county can require its own once you do more than $25,000 of work there in a year.²²
6. If you're Class C and work on houses in Fairfax or Prince William County, apply for the county home improvement license and buy the $10,000 surety bond.^8,9
7. Put your license number, class and "PLB" into your quote terms, contracts and invoices. A residential contract has to show your "name, address, license number, class of license, and classifications or specialty services," plus ten other items listed in the contract article. The written-contract rule leaves out "routine maintenance or service contracts," which the Board doesn't define, so give a replacement, repipe or rough-in the full contract.⁴
8. Check your trucks, website and ads. No statewide rule requires the license number on them. What applies is the ban on "false, deceptive, or misleading" ads, DPOR's rule that a business name can't suggest work outside your license, and the backflow title rule.^4,7,5 So no "gas lines" without GFC and no "certified backflow testing" without a certified tester.

Week 2: insurance and people

9. General liability: Virginia doesn't require it for a PLB license. The only firms the Board makes carry it are residential building energy analysts.³ Price it anyway, and ask the agent, in writing, whether the policy covers work outside your class or classification and gas work.
10. Workers' comp: required once you have three or more employees "regularly in service." Sole proprietors and single-member LLC members can elect to cover themselves. Going without when you're required to costs up to $250 a day, capped at $50,000, and the injured worker can sue you without your usual defenses.²⁰
11. Subcontractors: if a sub's worker is hurt and the sub has no coverage, you can owe the comp as the "statutory employer." Get a certificate from every sub, and look each one up on License Lookup, because you carry the penalty for hiring someone without a required credential.^20,23
12. Helpers: anyone without a tradesman license works under a licensed plumber who stays reachable and checks the work, and under a licensed gas fitter for gas.^3,5

Weeks 3 and 4: permits, water utilities and digging

13. Open a permit account with each building department you'll work in (Fairfax uses PLUS). Ask each one whether an electric water heater swap needs a permit, and write the answer down.^8,10
14. For gas appliance swaps in houses, add the vent and chimney check to your job steps, with the certification form if your county doesn't inspect it.¹⁰
15. If you'll test backflow: get the tester certified with DPOR, then sign up with each utility. Fairfax: Authorized Vendor Application. Virginia Beach: SwiftComply tester account with your certificate and test kit. Richmond: save the DPU test form and email address. Any other utility: find its cross-connection program. Book the gauge calibration every 12 months.^6,16,17,14
16. New water or sewer connections: find the utility's new-service process before you quote (Richmond DPU New Services Team, 804-646-8544; Virginia Beach asks for a Public Utilities receipt number on the permit for conversions).^14,13
17. Before any trench, submit a Miss Utility locate request and wait for every utility to mark or answer.¹⁸
18. If you'll cut into painted walls in pre-1978 homes, get the firm EPA-certified and take the certified renovator course.¹⁹

On the calendar

19. Firm license: expires two years from the last day of the month it was issued. Renewal is $220, $260 or $270 by class, plus $30 for the Recovery Fund, and the license isn't valid during the 30-day grace period.³
20. Master's, journeyman's and residential plumber licenses: every 3 years, $160, with 3 hours of board-approved plumbing code CE finished before the expiration date, and 1 more hour if the license carries gas fitting.⁶
21. Backflow certification: every 2 years, $110, no CE.⁶
22. If your qualifier leaves, report the new one within 60 days; a new designated employee within 120.³
23. BPOL renewal: Fairfax by March 1. Check your own locality's date.²²
24. County home improvement license and bond (Fairfax, Prince William), general liability and workers' comp: put each renewal date in the calendar. Fairfax's license lasts one to two years, depending on the bond.⁸
25. Your backflow customers' due dates: Fairfax assigns each property a testing month, and Richmond mails reminders 45 to 60 days ahead.^16,14

What happens if you cross the line

No contractor license on a job over $1,000, or the wrong class

• It's a crime. Contracting without a license, or "without the proper class of license," is a Class 1 misdemeanor: up to 12 months in jail and a $2,500 fine, plus a fine of up to $500 for each day of the violation.²³ A third conviction for unlicensed practice within 36 months is a Class 6 felony.²³
• DPOR can also sue for a civil penalty of $200 to $5,000 per violation, up to $25,000 a year.²³
• You may not get paid. A contract made without a valid license "shall not be enforceable by the unlicensed contractor" unless the work was done in good faith and the contractor "did not have actual knowledge that a license or certificate was required." Letting a license lapse creates "a rebuttable presumption of actual knowledge."²³ For the wrong class, the statute doesn't say, and I didn't research how courts read it.
• No mechanic's lien, with no license or with the wrong class.²³
• The customer can sue. Unlicensed work in a consumer deal is a prohibited practice under the Virginia Consumer Protection Act: actual damages or $500, whichever is more, up to three times damages or $1,000 if willful, plus attorney's fees.²³

No tradesman license on the person doing the work

Practicing as a plumber, LPG fitter or natural gas fitter provider without a license is a Class 1 misdemeanor for that person.⁵ Building officials have to report unlicensed tradesmen to the Board.⁵ The firm is "solely responsible" for any penalty that comes from employing someone who lacks a required credential, and failing to supervise helpers is a prohibited act.^23,4 Collecting gets harder too: the customer can raise the missing tradesman license as a defense unless the work was done in good faith "without actual knowledge of the licensure requirements."⁵

Gas without GFC, no permit, a lent license, or a backflow claim you can't back up

• Working outside your class or classification (a gas line on a PLB-only license) is a prohibited act. So is "Failure to obtain a building permit or applicable inspection, where required." The Board can fine up to $2,500 per violation, and its discipline also covers remedial education, probation, suspension and revocation.^4,7
• Lending the license is a prohibited act for the firm and for the master, and "Presenting or attempting to use the license or certificate of another" is a misdemeanor for whoever borrows it.^4,6,23
• Calling yourself a certified backflow tester without the certificate is a Class 1 misdemeanor, and a water utility or building official who finds an uncertified tester where a certificate is required has to report it to the Board.⁵ Fairfax won't accept test reports from testers who aren't on its authorized list.¹⁶

Insurance

I found no Virginia rule on what unlicensed or out-of-scope work does to your coverage. That's in your policy. Ask your agent in writing and keep the reply.

More for new plumbing contractors

• How much to charge per hour: service call minimum, first hour and flat prices, with a free rate sheet.
• Water heater replacement checklist: the code items, the permit and what to charge, with a free printable.
• You got your master plumber license. Now what? Stay for a raise or start your own plumbing business, with the numbers for each.
• Asked to be the master of record: what being a company's plumbing qualifier pays, and what it can cost you.

Where Deepsel fits

Deepsel is the field service software I build, and it doesn't know Virginia licensing. It won't warn you when a quote passes $30,000, pull a permit, or file a backflow report with Fairfax or SwiftComply. Two parts of it help with what's above. The shop-wide terms text you set once is copied onto every new quote and shows under "Terms" on the customer's quote page, and the invoice footer is copied onto every invoice, so your license number, class and PLB go on every document without retyping. And you can build a checklist template once (permit number, who did the gas connection, vent check, inspection passed) and add it to the quote for each water heater swap. Your office and techs tick items off, each answer is stamped with who did it and when, and the customer never sees it. Quotes can carry options, the customer approves and signs on screen, and an optional card deposit is credited on the final invoice. Free covers 30 estimates and 30 invoices a month for your whole team; Pro is $29 a month with unlimited estimates and invoices (pricing).

Frequently asked questions

Do you have to have a plumbing license to run a plumbing business in Virginia?

The business needs a contractor license (Class A, B or C) with the PLB classification for any plumbing job over $1,000, and that license has to name a master plumber as its qualified individual. The owner doesn't have to be a plumber, but the master must be one of the firm's owners or officers, or a full-time W-2 employee working at least 30 hours a week for it. Everyone doing the work needs a tradesman license (residential plumber, journeyman or master) or has to work under the supervision of a licensed plumber.

How do I look up a Virginia plumbing license?

Use DPOR's License Lookup at dpor.virginia.gov/LicenseLookup. Search the person for a residential, journeyman or master plumber license, or the business for its contractor license. The firm's record shows its class and its letters: PLB for plumbing, GFC for gas fitting, LPG for propane. DPOR says the lookup also shows the continuing education hours a tradesman needs before renewing.

Can a master plumber work without a contractor license in Virginia?

On small jobs, yes. The contractor license starts at contracts over $1,000. DPOR's tradesman application tells anyone performing work over $1,000 to get a contractor license, and Fairfax County's contractor guide says journeymen and masters can do work under $1,000 per contract without one. In Fairfax that work still needs a county home improvement license with a $5,000 bond.

What can a Class C plumbing contractor do in Virginia?

Any work the PLB classification covers, on contracts over $1,000 and under $30,000, as long as all your contracts in any 12 months total less than $250,000. Those limits took effect July 1, 2025, and older pages, including DPOR's own step-by-step guide, still show $10,000 and $150,000. In Fairfax and Prince William counties, Class C firms doing work on houses also need a county license with a $10,000 surety bond.

Does a Virginia plumbing contractor need insurance or a bond?

Not for the state license. The Board's regulations require general liability insurance only from residential building energy analyst firms, and a $50,000 surety bond only as a Class B or A firm's alternative to showing $15,000 or $45,000 of net worth. Workers' comp becomes mandatory once you regularly have three or more employees. Fairfax County requires a $10,000 surety bond with its home improvement license for Class C contractors on jobs over $1,000, and Prince William County requires $10,000 for its license.

Do I need a separate license for gas lines in Virginia?

Yes. The PLB classification does not cover gas piping. A firm needs the GFC (gas fitting) specialty, or LPG for propane, qualified by a master gas fitter or master LPG fitter. The person running the gas line needs the gas fitting designation on their tradesman license, or has to work under someone who holds it. A plumbing and gas fitting license renews together, with 3 hours of plumbing code CE and 1 hour of fuel gas code CE.

Do I need a license to test backflow preventers in Virginia?

Yes, a DPOR backflow prevention device worker certification. Virginia's Waterworks Regulations have required it for anyone testing or repairing backflow assemblies since January 1, 2023. The water utility usually adds its own step: Fairfax County keeps an authorized vendor list, Virginia Beach takes test reports only through SwiftComply, and Richmond wants its own form emailed to Public Utilities. Installing or replacing an assembly is plumbing work and needs a permit.

Which plumbing code does Virginia use?

The Uniform Statewide Building Code, 2021 edition, which brings in the 2021 International Plumbing Code and the 2021 International Fuel Gas Code. Houses and townhouses up to three stories follow the Virginia Residential Code, which is the 2021 International Residential Code as amended by Virginia, including its plumbing chapters. Cities and counties enforce it but can't write their own plumbing code.

Sources

1. Code of Virginia § 54.1-1100, definitions of Class A, B and C contractors (single contract or project over $1,000 and under $30,000 for Class C, $30,000 to under $150,000 for B, $150,000 or more for A; 12-month totals under $250,000, under $1 million, and $1 million or more; "The Board shall require a master tradesmen license as a condition of licensure for electrical, plumbing, and heating, ventilation, and air conditioning contractors") and "Designated employee." Amended 2025, cc. 127, 133. law.lis.virginia.gov, read November 3, 2026.
2. Department of Planning and Budget, State Fiscal Impact Statement for SB 1059 (2025), published 1/29/2025: the bill would "raise the maximum allowable revenue for a Class C contractor from $10,000 per project or $150,000 per year to $30,000 per project or $250,000 per year," and Class B from "$120,000 per project or $750,000 per year." lis.blob.core.windows.net, read November 3, 2026.
3. 18VAC50-22, Board for Contractors Regulations, full chapter: 18VAC50-22-10 ("Full-time employee," 30 hours a week and a W-2; "Supervision"; "Responsible management"), -20 (PLB, HVA, SPR and H/H definitions; PLB "does not provide for (i) gas piping"), -30 (GFC, LPG, NGF, CDS, ADS, ISC, LAC, WWP and other specialties), -40, -50 and -60 (qualified individual, designated employee, basic business course; $15,000 and $45,000 net worth or a $50,000 bond), -61 (PLB qualifier must hold a "Master plumber tradesman license"; GFC a "Master gas fitter license"; LPG, NGF, CDS, ADS, SPR and WWP prerequisites), -62 (general liability insurance required of residential building energy analyst firms only), -100 (initial fees; $125 to change a qualified individual or add a specialty), -110 and -130 (two-year term; not valid during the 30-day grace period), -140 (renewal fees $220, $260, $270 and the $30 Recovery Fund assessment) and -220 (new qualified individual reported within 60 days, designated employee within 120). law.lis.virginia.gov, current through Virginia Register Vol. 41 (eff. September 1, 2025), read November 3, 2026.
4. 18VAC50-22-260 B, prohibited acts: 4 (false, deceptive or misleading advertising), 8 (written residential contract, excluding "routine maintenance or service contracts"), 9 i (license number, class and specialties on residential contracts), 19 (allowing a firm's license to be used by another), 20 (ostensible licensee for undisclosed persons), 26 (Miss Utility notification), 27 (practicing outside your class or classification), 29 (unlicensed or improperly licensed subs), 32 (supervision of helpers), 33 (no permit or inspection where required). law.lis.virginia.gov. Board penalty up to $2,500 per violation: Code of Virginia § 54.1-202, law.lis.virginia.gov. Both read November 3, 2026.
5. Code of Virginia §§ 54.1-1128 ("Backflow prevention device worker," "Liquefied petroleum gas fitter" excluding hot water heaters, boilers and central heating, "Natural gas fitter provider," "Tradesman"), 54.1-1129 A to D (license required; supervision "by a tradesman who is licensed in the specialty"; work "incidental" to another specialty license; backflow certification and local programs; LPG and natural gas fitter licenses; plumbers and water well work), 54.1-1131 C (no tradesman license for work under $250 on a single-family residence by someone who doesn't hold himself out as a tradesman), 54.1-1132 (three-year license), 54.1-1134 (building officials and water purveyors report unlicensed or uncertified workers) and 54.1-1135 A to C (Class 1 misdemeanor for unlicensed practice and for falsely claiming backflow certification; lack of licensure as a defense). law.lis.virginia.gov, read November 3, 2026.
6. 18VAC50-30, Individual License and Certification Regulations: 18VAC50-30-10 ("Plumber," "Plumbing work," "Gas fitter," "Residential plumber tradesman," "Backflow prevention device work," "Incidental," "Journeyman," "Master"), -39 (master exam after three years on a residential license or one year as a journeyman), -42 (backflow worker: four years and 32 hours, or seven years and 16 hours; wet lab), -120 (plumbers and gas fitters expire after three years, other certifications after two; three hours of CE per trade designation and one hour for gas fitters; $160 tradesman and $110 LPG, NGF and backflow renewals), -150 (several designations on one license) and -190 (prohibited acts, including letting one's license be used, practicing outside the classification and skipping permits). law.lis.virginia.gov. DPOR, Tradesmen Program page (residential licenses since April 1, 2025, "no commercial work permitted"; certification "mandatory, not optional"; Technology Fee of $7.25 per year from July 1, 2026; CE FAQ: plumbers 3 hours on the International Plumbing Code, gas fitters 1 hour on the International Fuel Gas Code, backflow workers none), dpor.virginia.gov. Both read November 3, 2026.
7. DPOR documents: Board for Contractors License Application, A501-27LIC-v18, 08/01/2026 (the QI is "a bona fide full-time employee (minimum 30 hours per week and not a 1099 employee) OR one of the members of Responsible Management"; trade specialties need a master tradesman license; "there is no Designated Employee for Class C licenses"), dpor.virginia.gov; Trade-Related Examinations and Qualifications Information, A501-27EXINFO-v10, 09/01/2025 (PLB, GFC, LPG and NGF qualifiers need a master tradesman card), dpor.virginia.gov; Tradesman Exam and License Application, A501-2710EXLIC-v8, 07/01/2026 (plumbing and gas fitting designations; "Any applicant performing work over $1,000 must contact the Board for Contractors"), dpor.virginia.gov; "Contractor Licensing Information," A501-27INTRO-v8 (a license has two parts, the class and the classification or specialty), dpor.virginia.gov; "A Step By Step Guide to Obtaining Your Contractor License" (a business name "must not indicate that you do work that is not allowed by your license"; still prints the pre-2025 limits), dpor.virginia.gov; "Statement of Consumer Protections," revised 4/29/2025 (Board discipline), dpor.virginia.gov; License Lookup. All read November 3, 2026.
8. Fairfax County: "How to Become a Contractor in Fairfax County" (tradesman and contractor licenses "cannot be combined"; journeymen and masters under $1,000; SCC registration; Class C contractors need a county HIC license; BPOL within 75 days), fairfaxcounty.gov; "Home Improvement Contractor License (HIC)" (Class C contractors and those under the Class C threshold; requirements; "$5,000 surety bond" under $1,000, "$10,000 surety bond" over; valid one to two years), fairfaxcounty.gov; "Plumbing (PLBR) - Residential" (what needs a permit; Household Appliance alternative; trade permits after the building permit; wastewater or health approval; owners may pull permits; License Exemption Affidavit; Clifton and Vienna; condos and apartments are commercial), fairfaxcounty.gov; "Household Appliance (HAPL) - Residential" (gas appliance replacement "requires a permit, even if it is a like-for-like replacement"; new gas piping needs a Residential Plumbing permit), fairfaxcounty.gov; "Does My Project Require a Permit?" (direct replacement of household appliances, water heaters included), fairfaxcounty.gov. All read November 3, 2026.
9. Prince William County Code, Chapter 5, Article III, Home Improvement Contractor License (county copy "Version 2013-01-25," codified through Ordinance No. 12-57 of 2012): § 5-51 (state Class A and B licensees exempt), § 5-52 (Plumbing category "requires master plumber certification"; Gas Fitting "requires master gas fitter certification and master plumber or master mechanical certification"; "Surety bond requirement for home improvement license in all categories is $10,000.00"), pwcva.gov; "Contractor Licensing Information," Version 2015-05-19 (Class C contractors need the county license "if the work being performed is residential"), pwcva.gov. Read November 3, 2026. The county documents use the pre-2025 state class limits.
10. Virginia Uniform Statewide Building Code, 13VAC5-63: Section 101 (2021 edition; 2021 International Plumbing Code, International Fuel Gas Code and International Residential Code), Section 310.6.1 (Virginia Residential Code for one- and two-family dwellings and townhouses), Section 108 (permit before work on water supply, sanitary drainage, vent, fuel supply systems and regulated equipment; emergency applications "by the end of the first working day"; exemptions for replacement plumbing fixtures and well pumps and for mechanical appliances "not fueled by gas or oil"; a permit must be issued if the owner asks; who may apply; license proof and local taxes) and Section 113 (inspection "prior to concealment"; waiver under $2,500; 113.3.1 vent and chimney check on fuel-burning appliance replacement in Group R-5, with installer certification where not inspected). law.lis.virginia.gov, Section 108 history through Vol. 40 Iss. 9 (eff. January 18, 2024), read November 3, 2026.
11. Code of Virginia § 36-105 A and B (local building department enforces the code; inspection may be waived where construction cost is less than $2,500) and § 36-98 (the USBC supersedes local building codes). 36-105, 36-98, read November 3, 2026.
12. Code of Virginia § 54.1-1111 (license number or exemption statement, and proof local license taxes are paid, before a building permit or local business license), § 54.1-1117 (localities may license the business of home improvement, except Class A contractors), § 54.1-1101 A 7 (exemption for one primary residence owned and used by the person). 54.1-1111, 54.1-1117, 54.1-1101, read November 3, 2026.
13. City of Virginia Beach, Application for Plumbing Permit, rev. Jan-2026 (state registration number; contract value; Public Utilities receipt number; gas and electric tank and tankless water heaters; backflow DC, PVB and RP; sump pump; water and sewer line replacement, rerouting and lining; grease trap "*requires an approved site plan"), virginiabeach.gov document, and Trades Permits page, planning.virginiabeach.gov. Read November 3, 2026.
14. City of Richmond, Department of Public Utilities: "Permits" (Development Services "handles the installation of new gas, water, sanitary and storm sewer services"; cross connection specialists inspect backflow prevention; New Services Team (804) 646-8544), rva.gov; "Backflow and Cross-Connection Program FAQ" (most single-family residences not required; DPU inspects installed, replaced or relocated devices; annual test by a state-certified tester on the DPU form, emailed to DPU.DevelopmentServices@rva.gov; reminder letters 45 to 60 days ahead; service subject to termination), rva.gov. Read November 3, 2026.
15. Virginia Waterworks Regulations, 12VAC5-590-630 D ("Starting January 1, 2023, persons testing and repairing backflow prevention assemblies and backflow prevention devices shall be certified by a Commonwealth of Virginia tradesman certification program (identified by DPOR as backflow prevention device workers)"). law.lis.virginia.gov, read November 3, 2026.
16. Fairfax County Land Development Services, "Cross Connection Control and Backflow Prevention Program" (run with Fairfax Water; annual testing by "a Virginia State Certified and Fairfax County Authorized Tester"; Authorized Vendor Application; plumbing permit for every installation "even when you are replacing 'Like for Like'"; no permit for annual testing; Virginia Residential Code plumbing chapters), fairfaxcounty.gov; Fairfax Water, "Cross-Connection Control and Backflow Prevention Program Manual," June 1, 2021 (assigned testing month; report "within 10 business days of the test date"; gauges calibrated at least once a year; tests only by authorized vendors), fairfaxwater.org. Read November 3, 2026.
17. City of Virginia Beach Public Utilities, "Backflow Prevention & Cross-Connection Control" (testers must be DPOR backflow prevention device workers under 12VAC5-590-630), pu.virginiabeach.gov, and "Annual Testing" (annual testing "required by City Code"; SwiftComply; "Test forms are no longer distributed by Public Utilities"; tester accounts with certifications and test kit information), pu.virginiabeach.gov. Read November 3, 2026.
18. Underground Utility Damage Prevention Act: Code of Virginia § 56-265.15 ("excavation" includes trenching, digging and driving), § 56-265.17 A and B (locate request before any excavation; wait for positive response; treble damages for willful failure) and § 56-265.32 A (civil penalty up to $10,000 per violation of 56-265.17 A). 56-265.15, 56-265.17, 56-265.32, read November 3, 2026.
19. EPA Renovation, Repair and Painting rule, 40 CFR 745.81, 745.82, 745.83 (minor repair, plumbing included: 6 square feet per room inside, 20 outside; same room within 30 days is one job) and 745.89 (firm certification), law.cornell.edu; EPA, "Lead Renovation, Repair and Painting Program" (Virginia is not an authorized state), epa.gov; 40 CFR 19.4, Table 1 (TSCA civil penalty $49,772 for penalties assessed on or after January 8, 2025), law.cornell.edu. All read November 3, 2026.
20. Virginia Workers' Compensation Act: Code of Virginia § 65.2-101 ("Employee" excludes employees of an employer that "has regularly in service less than three employees"; sole proprietors and single-member LLC members may elect coverage), § 65.2-800 A (duty to insure), § 65.2-805 A (civil penalty "not more than $250 per day for each day of noncompliance, subject to a maximum penalty of $50,000") and § 65.2-302 (statutory employer). 65.2-101, 65.2-800, 65.2-805, 65.2-302, read November 3, 2026.
21. Code of Virginia § 59.1-69 B: no business under an assumed or fictitious name unless a certificate is filed "in the office of the clerk of the Commission" (the State Corporation Commission). law.lis.virginia.gov, read November 3, 2026.
22. BPOL: Code of Virginia § 58.1-3703 A, § 58.1-3706 A and § 58.1-3715 (license where the principal office is; another locality may require a license above $25,000 of business there in a year), 58.1-3703, 58.1-3706, 58.1-3715; Fairfax County, "Understanding Business, Professional & Occupational License Tax" (register within 75 days; renew by March 1), fairfaxcounty.gov. All read November 3, 2026.
23. Penalties: Code of Virginia § 54.1-1115 (Class 1 misdemeanor for contracting without a license "or without the proper class of license," or using another's license; up to $500 a day; contract unenforceable by the unlicensed contractor; lapse creates "a rebuttable presumption of actual knowledge") and § 54.1-1115.01 (contractor "solely responsible" for penalties from hiring someone without a required credential), 54.1-1115, 54.1-1115.01; § 18.2-11 (Class 1 misdemeanor: up to twelve months and $2,500), 18.2-11; § 54.1-111 (civil penalty $200 to $5,000 per violation, $25,000 a year; third conviction in 36 months a Class 6 felony), 54.1-111; Virginia Consumer Protection Act § 59.1-200 A 46 and § 59.1-204, 59.1-200, 59.1-204; § 43-3 D (no mechanic's lien without a license or the proper class), 43-3. All read November 3, 2026.