Plumbing License in Ohio: Fees, Requirements & Startup Costs
Quick answer: The Ohio Construction Industry Licensing Board (OCILB) regulates plumbing contractors on covered nonresidential projects. A plumbing business needs a qualifying individual’s Plumbing Contractor license assigned to the company. Official entry charges are the $25 examination application and $25 license issuance, with $69 per registration for the plumbing trade and Business and Law exams. Verify residential and municipal requirements for the job location.
Match the license to the contracts the company wants
The OCILB Plumbing Contractor credential comes first from an individual applicant. Ohio law permits that person to assign the license to a contracting company. An owner who will manage sales and crews, but will not personally qualify, needs to identify the qualifying license holder before offering covered plumbing construction. The research did not establish an additional statewide company application fee. Keep the assignment and insurance documents aligned with the entity that will sign customer contracts.
State licensing under Chapter 4740 addresses nonresidential construction and excludes residential buildings as defined in ORC 3781.06. This boundary matters to a plumber deciding between commercial build-outs and house calls. The plumbing business hub discusses planning the operation; the plumbing license guide gives the broader credential picture. Neither replaces a check of the local rules for a specific Ohio address.
Licensing in Ohio
Jurisdiction: state
Authority: Ohio Construction Industry Licensing Board (OCILB), Ohio Department of Commerce
OCILB licenses contractors for nonresidential construction projects statewide. Chapter 4740 excludes residential buildings as defined in ORC 3781.06; local residential licensing and municipal registration requirements may apply.
Plumbing Contractor license assigned to contracting company
BUSINESS A qualifying individual may assign the OCILB plumbing contractor license to the contracting company under ORC 4740.07. This is the company's authority for covered commercial work; no separate state company application fee was confirmed.
Plumbing Contractor
INDIVIDUAL Individual OCILB plumbing contractor license; the individual may assign it to a contracting company.
| Fee | Amount | Period (years) |
|---|---|---|
| OCILB plumbing examination application | $25 OFFICIAL FEE Source — codes.ohio.gov | — |
| Issuance of plumbing contractor license | $25 OFFICIAL FEE Source — codes.ohio.gov | — |
| PSI plumbing trade exam, per registration | $69 VERIFIED DATA Source — test-takers.psiexams.com | — |
| PSI Ohio Contractor's Business and Law exam, per registration | $69 VERIFIED DATA Source — test-takers.psiexams.com | — |
| Annual plumbing contractor license renewal | $60 OFFICIAL FEE Source — codes.ohio.gov | 1 |
Exam: Provider: PSI · Fee: 69 · Source
Experience: Applicants need five years as a tradesperson in the licensed trade immediately before applying, or Ohio engineer registration plus three years of construction business experience in the trade, or other experience accepted by the specialty section.
Insurance: Requirement: At least $500,000 contractor liability insurance, including completed operations; in the company name if the license is assigned to a business entity. · Source
Renewal and CE: Renewal period: 1 year · Continuing education: 10 hours · Source
Local note: Municipalities may require registration, fees, and bonds from OCILB licensees but may not require another skills examination for the licensed trade (ORC 715.27). Residential work may face local licensing rules.
Data notes
Plumbing licensees need ten approved continuing education hours annually. PSI charges $69 per registration for each required trade and Business and Law exam.
Verified: 2026-09-24
Choose an experience route before booking tests
ORC 4740.06 describes three ways an applicant’s background may qualify: at least five years as a tradesperson in plumbing immediately before applying; Ohio registered engineer status with three years of construction business experience in the trade; or other experience accepted by the specialty section. The last route depends on that section’s decision. Gather evidence for the route to be used instead of assuming general construction management experience is interchangeable with plumbing experience.
Criminal records checks at both the state and federal levels precede examination. PSI lists a plumbing trade test and the Ohio Contractor’s Business and Law test in its candidate bulletin. Each carries a $69 registration charge on the official pages. Ohio’s examination application is $25, with another $25 due for license issuance. There is no separate prelicensing classroom requirement stated in the cited qualification rules. Background-check vendor charges were not confirmed, so an owner should request the current charge before finalizing cash needs.
Budget coverage and continuing obligations
The required contractor liability policy has a minimum of $500,000 and must include completed operations. If the license is assigned to a business, the policy must name that company. The OCILB fee and insurance rule also sets annual renewal at $60. A company should place both renewal and policy dates where the person accepting jobs can see them.
Plumbing contractors complete ten hours of approved continuing education each year under the OCILB renewal rule. The researched state data gives no universal statewide bond amount. That does not settle what a municipality may require when the company registers locally.
Price the local layer at the job address
Municipalities may impose registration, fees, and bonds on OCILB licensees, but ORC 715.27 does not let them demand another skills examination for the licensed trade. Residential plumbing may have local licensing rules of its own. Before quoting a job, confirm the local registration and permit process, especially when crossing city boundaries. The research contains no single amount that can stand in for every city’s fee or bond.
The plumbing startup cost guide helps turn these known state charges and unknown local costs into a working budget. Set the calculator for the proposed company rather than treating its default as a filing quote. The Texas and Florida pages offer other state comparisons.
Estimated startup cost: $9,000–$11,100 Estimated startup cost: $9,000–$11,100. Break-even at about 7 jobs per month. Monthly overhead: $1,600–$1,750 · Annual operating: $19,300–$21,000 · Break-even: 7 jobs/month Vehicle operating per month: $760 CALCULATED Phone and admin per month: $150 YOUR INPUT Startup total is the sum of available first-year cost lines. Monthly overhead includes insurance, software, marketing, vehicle operating, phone and admin, and payroll. Break-even jobs = monthly overhead ÷ (average ticket × gross margin).Startup Cost Calculator
Licensing & exam fees $188 OFFICIALLicense details Business formation (state filing) $99 OFFICIAL Insurance (first year) $1,750 MARKET ESTIMATEGeneral liability Vehicle acquisition $0 YOUR INPUTYour existing vehicle; acquisition cost $0 Vehicle price sources
Tools & equipment $50 MARKET ESTIMATE Starter kit items
Software (first year) $590–$2,250 MARKET ESTIMATEPublished monthly list price × 12 Software price sources
Launch marketing $1,500 YOUR INPUTYour input — default: 3 months × $500 Payroll reserve $0 CALCULATEDBLS median wage × 173 hours/month × employees × employer taxes and ECEC benefits × working-capital months Working capital $4,800–$5,250 CALCULATEDMonthly overhead excluding payroll (shown separately) × working-capital months Permits & compliance $0 YOUR INPUTYour input — default $0; local requirements may apply Show formula
Official sources
- codes.ohio.gov — OCILB electrical examination application
- api.bls.gov — BLS OEWS Plumbers, Pipefitters, and Steamfitters
- www.ohiosos.gov — Ohio LLC filing fee
Market sources
- test-takers.psiexams.com — PSI electrical trade exam, per registration
- www.homedepot.com — RIDGID 31020 14-in straight pipe wrench
- www.homedepot.com — RIDGID 32925 Model 15 tubing cutter
- www.homedepot.com — RIDGID 57043 Power Spin+ drain auger
- www.lowes.com — Werner PD6206 6-ft fiberglass platform ladder
- www.homedepot.com — 3M SecureFit SF400G-LV-4-PS safety glasses
- www.walmart.com — Milwaukee M18 FORCE LOGIC 2922-20 press tool (ONE-KEY)
- www.walmart.com — Milwaukee 2773-22L M18 Force Logic long throw press tool kit 1/2-1 in.
- www.walmart.com — RIDGID K-400 drum drain cleaning machine
- www.homedepot.com — Klein Tools ET16 borescope camera
- www.insureon.com — Insureon
- www.getjobber.com — Jobber
- www.housecallpro.com — Housecall Pro
- quickbooks.intuit.com — QuickBooks Online
- www.ramtrucks.com — 2026 Ram ProMaster cargo van (base)
- www.cars.com — 2026 Ford F-150 XL (base)
- www.cars.com — 2026 Ford Transit-150 cargo van (base, T-150 130in low roof RWD)
- www.coxautoinc.com — Used vehicle average listing price (all segments, not cargo-van specific)
Frequently asked questions
Can an Ohio plumbing company apply without an individual qualifier?
The researched OCILB path starts with an individual Plumbing Contractor license that may be assigned to the company.
Does Ohio require a separate plumbing classroom course before applying?
No separate prelicensing classroom requirement is stated in the cited OCILB qualification record.
What coverage must the assigned company carry?
The rule calls for at least $500,000 in contractor liability insurance including completed operations, in the company name when assigned.
Can a city require another plumbing skills exam?
ORC 715.27 bars another municipal skills examination for an OCILB licensee's licensed trade, although local registration, fees, and bonds may apply.
Last updated: October 21, 2026