The short answer
North Carolina requires a Board license for anyone who engages in or offers to engage in plumbing contracting. A license is required before any person, firm, or corporation engages in or offers to engage in plumbing contracting. Read the licensing statute.
For plumbing contractors, the main choice is P-I versus P-II. P-I is the broader credential; P-II is restricted to single-family detached residential dwellings. This is a contractor-license path, not a statewide apprentice-to-journeyman ladder. For broader trade context, see how to get a plumbing license, and compare the closely related North Carolina HVAC license path.
P-I versus P-II: choose by project scope
The legal distinction is based on the structures and systems you may serve, not on a dollar limit. North Carolina law says: Class I covers all plumbing, heating, and fire sprinkler systems for all structures, while Class II covers plumbing and heating systems in single-family detached residential dwellings. Read the controlling statute.
| Classification | Practical scope | Best fit |
|---|---|---|
| P-I | Plumbing work in all structures | Contractors who expect commercial, multifamily, institutional, or mixed portfolios |
| P-II | Plumbing systems in single-family detached residential dwellings | Residential-only contractors whose work stays within that boundary |
Do not treat P-II as a substitute for P-I if the business plan includes apartments, retail, offices, schools, or other non-detached-residential work. Choose the classification for the work you intend to contract, not merely the work you do today.
Experience: prove category-related work, not an added supervision rule
The Board states that plumbing or heating contractor applicants need two years, or 4,000 hours, of on-site full-time experience in installation, maintenance, service, or repair related to the category sought, whether or not a license was required for the work performed. The applicant page also says up to one-half of the experience may be academic or technical training directly related to the field sought.
The fetched Board language does not say every hour must have been completed under a licensed contractor. Document what the work actually involved and why it relates to the plumbing classification. Build the record before filing:
- List employers, customers, projects, dates, and duties.
- Separate hands-on plumbing-system work from unrelated construction duties.
- Calculate dates and hours conservatively.
- Gather employer statements, tax records, project records, and directly related training records.
- Make sure the claimed work matches the P-I or P-II category.
The Board determines eligibility. A detailed, internally consistent packet is more useful than a resume that merely says “plumber.” Our experience-verification guide explains how to organize corroborating records without inventing a supervision condition the Board passage does not state.
Application and exam sequence
Use this order:
- Select P-I or P-II.
- Review the Board book reference list and application instructions.
- Submit the application, experience support, and required fee.
- Wait for eligibility approval before scheduling.
- Complete the applicable Board examination or examinations for the classification.
- After passing, activate the license in the correct individual or business name.
The online application instructions say the portal is only for new applicants who have not previously applied, tested, or held a Board license. They also warn that original notarized documents must still be mailed to the Board even when submitted online. Once an online application is approved, the applicant must take the exam within 30 days of the notification date.
If you are a repeat applicant, current licensee, or cannot scan every required document, use the Board forms route instead of assuming the new-applicant portal fits your case.
What the fees actually tell you
North Carolina statute sets ceilings and a default exam charge; it is not a complete project budget. The law says the application and examination fee may not exceed $150 and, until changed by Board rule, the fee for each examination or exam part taken on a particular day is $100. The annual plumbing or heating license fee may not exceed $150. See G.S. 87-22 and 87-22.1.
Budget separately for reference books, document preparation, notary or mailing costs, and any retest. Confirm the amount printed on the current Board application or invoice before paying; a statutory maximum does not prove that every applicant owes that maximum.
Align the license with the contracting business
The statute requires a license before any person, firm, or corporation engages in or offers to engage in plumbing contracting. Read the licensing requirement. In practice, the business and the individual supplying its technical qualification must be aligned in the application and Board record.
Before bidding, confirm the exact contracting name, classification, and responsible license holder with the Board. Document who controls renewals, exam credentials, and notice obligations. A mismatch between the name on a proposal and the licensed operation can disrupt work even when an owner or employee has passed an exam. See our explanation of qualifying parties on contractor licenses for the governance questions to settle in writing.
Reciprocity: do not assume an out-of-state license transfers
The Board currently states: There are no state-to-state reciprocity agreements. It separately says South Carolina licensees may qualify for waiver of the technical portion of the exam, but must still pass the business exam. Check the Board’s current out-of-state guidance before relying on any waiver.
Individuals who are currently permanent residents of North Carolina and also currently hold licensure in Georgia, South Carolina, Tennessee, Virginia, or West Virginia may be eligible for equivalent North Carolina licensure. That is a conditional pathway, not blanket reciprocity. Read it alongside our contractor-license reciprocity guide, and let the Board confirm equivalency before changing jobs or signing contracts.
Renew by year-end and stop work if the license expires
All Board licenses expire on December 31. The Board renewal page says there is no grace period and that bidding, contracting, supervising, installing, and other licensed activity must stop until renewal. A renewal not completed during January adds a $25 statutory processing charge.
An expired license may generally be reinstated within three years by written request and payment of current and unpaid prior-year fees plus the processing fee. After three years, reexamination is required. Treat renewal as an operational deadline: verify the license record after payment, and do not rely only on a mailed form or credit-card receipt. Our contractor-license renewal guide provides a reusable compliance checklist.