Hawaii Plumbing License: Journey Worker, Master Plumber and C-37

Hawaii licenses plumbers in two ways: a Journey Worker or Master Plumber license to perform the work, and a separate C-37 contractor license to sell it. The Board of Electricians and Plumbers, inside the Department of Commerce and Consumer Affairs (DCCA), issues the plumber licenses under HRS Chapter 448E and HAR Chapter 16-80.

At a glance

• Issuer: Board of Electricians and Plumbers, DCCA Professional and Vocational Licensing, under HRS 448E and HAR 16-80
• Journey worker: 5 years full time and at least 10,000 hours as a plumber's helper
• Master: 2 years registered as a Hawaii journey worker plumber, or equivalent licensure elsewhere
• Exam: PSI, closed book on the 2018 Uniform Plumbing Code, 70 percent to pass
• Renewal: every plumber license renews by June 30, 2027, on a three year cycle

Every figure below was checked against its primary source on October 20, 2026. For the company side of Hawaii licensing, see our Hawaii contractor license guide, and for every other state, see how to get a contractor license in each state.

Who Needs a Hawaii Plumbing License

HAR 16-80-4(5) requires anyone who performs plumbing work, or who directs and supervises it, to hold a journey worker or master plumber license. HRS 448E-9(a) makes it unlawful to act as a plumber, or to advertise or hold yourself out as one, without a license issued under the chapter.

The rule defines the work itself. HAR 16-80-3 covers installing, maintaining, extending and altering piping, fixtures, appliances and appurtenances for sanitary and storm drainage, venting, potable water supply and fuel systems in or near a building, out to the point of public disposal. The same section names the Uniform Plumbing Code, as each county adopts and amends it, as the minimum standard.

HAR 16-80-2(b) excludes employees regulated by the Public Utilities Commission, federal employees while so employed, people who repair electrical appliances, and people who make or sell plumbing or electrical fixtures and hardware.

That covers the obvious jobs: replacing a water heater, repiping a bathroom, installing a backflow preventer, running gas line to a new range. It also covers less obvious ones, such as swapping a garbage disposal in a way that disconnects the trap, which is why Hawaii's own consumer brochure warns against treating any of this as handyman work.

The Five Foot Rule

HAR 16-80-4(8) applies the license requirement to plumbing work "in or within five feet of the buildings in the State." HAR 16-80-3 finishes the thought: other properly licensed contractors may do exterior piping work five feet or more outside the building line without licensed plumbers.

The Hawaii State Plumbing Code draws the same line. Its building drain now meets the building sewer five feet outside the building wall, a change the code says lines up with HRS 448E.

Helpers, Apprentices and Supervision

Unlicensed helpers may do plumbing work only under a licensee who oversees, reviews and answers for it, and who "is physically present and available at the project site at all times" while the work happens (HAR 16-80-4(8)). The rule gives no remote supervision option.

An apprentice holds a registered status. HAR 16-80-3 defines one as a person registered under HRS Chapter 372, the state apprenticeship law, working under a licensed plumber, and HRS 448E-9(b) excuses a properly supervised apprentice or trainee from holding a license.

Hawaii's Two Plumbing Licenses

The Board issues nine individual licenses under HAR 16-80-2(a): seven electrician classes and two plumbing.

HRS 448E-1 lets both licenses direct, supervise and perform plumbing work; the master definition adds overall supervision, general direction and responsibility for proper installation. Hawaii has no maintenance plumber license: the state licenses a maintenance electrician (EM), but the closed list in HAR 16-80-2(a) has no plumbing counterpart.

Master Plumber: Two Years After Journey Worker

The step from journey worker to master is two years registered with the Board as a journey worker plumber, or equivalent experience in the trade (HRS 448E-5(b)(6)). HAR 16-80-3 counts licensure as a journey worker or master plumber in another county, state or country with substantially equivalent requirements toward that period.

That route still runs through Hawaii's own application and exam. The Board's application states that Hawaii does not reciprocate with any jurisdiction, so an out of state license shortens the wait but never replaces the Hawaii exam. For how the two levels differ in daily work, see journeyman versus master plumber.

How the 10,000 Helper Hours Must Break Down

A journey worker applicant needs at least five years of full time experience, or its equivalent, and not less than 10,000 hours as a journey worker's or master plumber's helper (HRS 448E-5(b)(5)). The Board's application adds that the work must comply with the Uniform Plumbing Code.

The Board's Experience Verification form for plumbers (EP-02) asks the supervising plumber to total hours by work process, and it prints a floor for each one.

The floors add to 7,000 hours, so the remaining 3,000 can come from any listed process. A helper who has spent years on one kind of job should check every category before filing.

Plumbers Need No College Coursework

Act 35 of the 2010 Session Laws added University of Hawaii community college coursework for electricians: 240 hours for a journey worker electrician, 200 for industrial, 120 for specialty and 80 for maintenance electricians. The Board's application prints those hours under a heading reading "ELECTRICIANS ONLY."

The plumber paragraphs of HRS 448E-5(b) contain no coursework clause. What a plumbing applicant needs instead is documented, verified trade experience.

What the Board Application Requires

The application asks whether you are at least 18 and authorized to work in the United States, and it will not be processed without your Social Security Number.

The supporting documents are specific:

• Experience Verification (EP-02), notarized, from each licensed plumber you worked under. Where the state you worked in licenses only contractors, the Board accepts the form signed by that contractor with proof of the license dates.
• License Verification from every jurisdiction where you have ever held a license.
• Self employed applicants who held an electrical or plumbing contractor license may complete their own experience verification if they submit proof the contractor license was valid for the dates claimed.
• A conviction needs a signed statement, the court documents and a Hawaii Criminal Justice Data Center record check dated within 6 months.
• The $40 application fee, non-refundable. License fees are not sent with the application.

If the Board denies the application, a written request for a hearing must reach the agency within 60 days of the denial notice.

Board Meetings and Filing Deadlines

The Board approves every applicant before the exam, and a complete application must be filed not less than seven days before the Board meeting (HAR 16-80-5(4)). As of today, three of the Board's four 2026 meetings, held February 3, May 12 and August 25, have already passed.

The Board had not posted a 2027 meeting schedule as of this writing. Meetings are subject to change, so check the Board's own calendar before you plan a filing around a date.

Two more clocks run on every file:

• Exam eligibility lasts two years from the examination approval letter, and PSI lets you test as many times as needed inside that window.
• An application is abandoned and destroyed if two consecutive years pass without evidence of continued effort toward licensure (HAR 16-80-5(5)).

The Plumber Exam

PSI Services administers the electrician and plumber licensing exams. After approval, you register directly with PSI online or by phone at (833) 333-4754, allowing up to 24 hours after the approval letter issues.

The journey worker exam weights general knowledge and regulations (21 items), drain, waste and vent with pipe sizing (16) and water supply with pipe sizing (16) most heavily, then fixtures and water heaters (10) and fuel gas (8). The master exam covers the same ground in 80 items, with 18 on excavation, general knowledge and regulations.

PSI's study references include the 2018 UPC and 29 CFR Part 1926, though none may come into the exam room. The $90 fee stays valid for one year from payment and is not refundable, and testing outside Hawaii needs Board approval, requested with the application.

What the Plumber License Costs

The application builds each total from parts: the $40 application fee, then a $52 license fee and a Compliance Resolution Fund fee of $50, $100 or $150, one for each year left in the three year cycle. Add the parts for your year and the total at licensure is $102, $204 or $306.

A plumber licensed today falls in the cycle's final year and pays $102 at licensure. HRS 448E-8.5(c) also excuses a license issued within one year of the renewal date from the code update course at that first renewal.

Renewal and the Code Update Course

Every plumber license renews on the same three year cycle by June 30, regardless of when it was issued. The current cycle runs July 1, 2024 to June 30, 2027; the Board accepts renewals from May 10 to June 30, 2027 and mails the renewal postcard around May 7, 2027.

HRS 448E-8.5(b) requires, before each renewal, proof of a community college course on current Uniform Plumbing Code updates or a passed Board exam on them; there is no hour count, just one update course. For this cycle, active PJ and PM licensees must complete it on the 2021 Uniform Plumbing Code.

The college that taught it (Honolulu, Hawaii, Maui or Kauai community college) can send completion straight to the Board, or you submit the certificate yourself. A license issued within one year of the expiration date is exempt once, and inactive licensees have no requirement.

Late Renewal and Restoration

A license not renewed by its expiration date is unlicensed as of that date, and you may not work. Under HAR 16-80-6(e), a renewal mailed through the U.S. Postal Service is on time if postmarked before July 1.

HRS 448E-8(d) lets you restore a forfeited license on written application within one year of forfeiture, with the renewal fee, the penalty fee and the code update requirement. Miss that year and you apply as a new applicant, though HAR 16-80-6(g) lets the Board waive the exam retake when you failed to restore for good and valid reasons the Board approves.

A Plumber License Does Not Let You Contract

The Board's application says it in capital letters: the plumber's license "DOES NOT allow one to contract to perform" plumbing work, and a contractor's license under HRS 444 is required. The two credentials do different jobs.

The only opening is the general exemption in HRS 444-2(4), as amended by Act 283 of 2019: a project whose combined labor and materials price is $1,500 or less. It does not apply where a building permit is required, where the job is part of a larger project, or where a project is split into smaller contracts to avoid the chapter. DCCA's FAQ adds that the job must not need a plumbing permit, so confirm that with your county first.

A 2026 bill, HB846, would have raised that figure to $2,500, but it stalled in the legislature and never became law. Until a new act changes it, $1,500 is the figure to use.

What Counts Toward the $1,500

Act 283 of 2019 did more than raise the dollar figure. It also narrowed what counts toward it, so only the cost of labor and materials goes into the total, not taxes, permit fees or other charges that used to count against the older, lower threshold.

Before 2019, the limit counted every cost on the job, including taxes, and had sat at $1,500 since a 1992 increase from $100. A property owner adding up a small job today only needs to track labor and materials against the $1,500 figure, which is one reason the exemption covers more small jobs now than it did before 2019.

The C-37 Plumbing Contractor License

The C-37 scope in Exhibit A to HAR 16-77 is to "install, repair, or alter complete plumbing systems": supply water, hot water (including heat pump water heaters and hot water supply boilers of 200,000 BTU/h or less), waste water, fuel gas and other fluid piping, with backflow assemblies, non-electric controls and fixtures.

It also reaches vacuum, air and medical gas piping, spas and pools, irrigation, sewer lines within property lines, fire sprinklers when supervised by a licensed mechanical engineer or fire protection contractor, solar hot water, and the related trenching and surface restoration.

A C-37 holder automatically holds those subclassifications (HAR 16-77-32(d)). An "A" general engineering contractor automatically holds only C-37a and C-37b, and a "B" general building contractor holds no C-37 classification at all (HAR 16-77-32(a) and (c)). Under HAR 16-77-33(b), a B contractor may not take a contract unless it involves more than two unrelated trades or the contractor holds the specialty.

Who Qualifies for a C-37

HAR 16-77-18 requires the individual applicant or RME to have, within the ten years before filing, at least four years of supervisory experience as a foreman, supervising employee or contractor in the classification. The Board may count technical or business training, but never as more than one year (HAR 16-77-19).

An entity also needs business registration, a good reputation for honesty and financial integrity, a financial statement, credit reports, a tax clearance, liability and workers' compensation insurance, and a licensed RME in its employ. The Board's minimum liability limits are $100,000 bodily injury per person, $300,000 per occurrence and $50,000 property damage per occurrence, which is the figure that answers how much plumbing insurance a Hawaii company needs at the licensing stage.

The application fee is $50, non-refundable. Applications are due on or before the first Tuesday of the month before the meeting, and the Contractors License Board meets monthly except in December.

The Board's contractor packet warns plumbing applicants that if the RME is not a 448E licensed plumber, the company must employ licensed plumbers for the work, and may need that license to get a building permit.

The C-37 Exams

Both are closed book. PSI's C-37 references include the 2018 Uniform Plumbing Code and the 2018 International Fuel Gas Code, and the largest content area is sewer, drain, waste and vent systems and excavation (15 items). PSI's January 2026 contractor bulletin charges $80 per specialty exam and $85 for the A and B classifications.

The contractor window is tighter than the plumber exam's: the Contractors License Board requires you to pass within six months or file a new application, against two years of eligibility for the plumber exam. Only new applicants take Business and Law; a licensed contractor adding a classification takes just the trade exam.

Keeping the C-37

Contractor licenses renew by September 30 of each even numbered year (HRS 444-15(a)). A forfeited license may be restored with a penalty fee within 60 days, which the Board's packet puts at November 30; after that, you file a new application.

A lapse in liability or workers' compensation coverage forfeits the license automatically, and coverage not reinstated within 60 days sends the entity and RME back to a new application. For how the RME role works in Hawaii, see our guide to what an RME is in Hawaii, and for the national picture, how to get a plumbing contractor license.

Plumbers Insurance in Hawaii

Hawaii ties insurance to the C-37 contractor license, not to the individual plumber license. A journey worker or master plumber working as someone else's employee carries no state-mandated policy of their own; the insurance obligation sits with the licensed entity that employs them.

A C-37 entity must carry liability coverage at the Board's minimums: $100,000 bodily injury per person, $300,000 bodily injury per occurrence and $50,000 property damage per occurrence. It must also carry workers' compensation for every employee, plumber or not, under Hawaii's workers' compensation law.

Both policies have to stay active without a gap. The C-37 license is tied to continuous coverage, and a lapse in either liability or workers' compensation insurance forfeits the business entity and RME licenses automatically, the same forfeiture described above. The 60 day reinstatement clock starts the moment the lapse happens, not when the Board notices it.

A self employed plumber who never forms a C-37 entity, and instead works only under someone else's license, still works under the coverage that employer carries, but has no separate insurance filing of their own with the Board. Anyone shopping for coverage should ask an insurance agent licensed in Hawaii to quote the C-37 minimums directly, since rates and carriers change independent of the Board's own requirements.

Crew Rules on a Plumbing Job Site

Hawaii regulates who stands on the job, not only who holds the license. HRS 444-9.5(b) requires at least half of the individuals a plumbing contractor employs to perform plumbing work on a construction job site to be licensed under HRS 448E, though the Board may waive the ratio in a county short of licensed workers.

Licensed workers must visibly display their license on their person while on site, and "only individuals displaying their license at the time of a site inspection shall be counted" toward the ratio (HRS 444-9.5(c)). A licensed plumber whose card is in the truck does not count during that inspection.

Honolulu adds its own check. Its plumbing code lets the inspector require verification that the work was performed by a plumbing journey worker or contractor currently licensed in Hawaii, and a failure to verify is grounds to fail the inspection (ROH 19-1.1, amending UPC section 105.2.3).

The Handyman and Owner Builder Exemptions Do Not Cover Plumbing

DCCA's consumer brochure on hiring electricians and plumbers says it plainly: the so called handyman exemption does not apply to electrical or plumbing work, and a handyman doing work that requires a plumber's license is engaged in unlicensed activity. The $1,500 limit in HRS 444-2(4) is a contractor licensing exemption; it never replaces the plumber license the work itself requires.

The owner builder exemption in HRS 444-2.5 does not apply to electrical or plumbing work unless the owner holds an HRS 448E license, and it requires the owner to ensure that plumbing work is performed by appropriately licensed people.

The homeowner carve out is narrow. HRS 448E-9(a) lets a person perform emergency plumbing repair in their own principal residence only when the repair does not involve or require rearranging valves, pipes or fixtures, and never on sewer lines, drains, gas lines or fixtures served by backflow devices, which the statute lists as heaters, water closets, dishwashers and garbage disposal units.

Kauai goes further. Its Ordinance No. 1114 issues an owner a plumbing permit only when the owner holds a valid HRS 448E license, and where HRS 448E requires it, a licensed plumber must be on site at all times during permitted work.

Penalties for Unlicensed Plumbing Work

Doing plumbing work without a license is illegal in Hawaii. HRS 448E-10(b) fines any violation of the plumber licensing chapter not less than $100 and not more than $5,000 for each violation, and DCCA's Regulated Industries Complaints Office investigates unlicensed activity.

Two consequences reach further than the fine. HRS 444-22 bars a person unlicensed when contracting from suing to recover for the work or materials, and courts have applied it even when the owner knew; the bar runs one way, since the owner may still sue the unlicensed contractor.

HRS 444-23(c)(3), the later offense paragraph, makes tools and materials used in unlicensed contracting subject to forfeiture when the violator is or was a defendant or respondent in a separate DCCA citation or lawsuit, and HRS 448E-9(c) has the phone company disconnect a number used in illegal advertising after a judgment. Licensees are exposed too: HRS 448E-10(a) lets the Board suspend or revoke a license for permitting an unlicensed person to perform licensed work.

Plumbing Codes and County Rules

The Hawaii State Plumbing Code, effective May 19, 2020, adopts the 2018 Uniform Plumbing Code with state amendments. It is enforced when a county adopts it, or as an interim code if a county does not adopt within the required period, and each county may require permits.

HRS 448E-12 keeps the counties' inspection power, and DCCA's FAQ sends permit and code questions to the county building departments. Our guide to state versus local contractor licensing explains the split.

Honolulu

Honolulu adopted the May 19, 2020 state code through ROH 19-1.1 (Ordinance 22-25), describing it as the Uniform Plumbing Code, 28th Edition (2018), 6th Printing, with appendices A, B, C, G and I. Its amendments exempt from permits the clearing of stoppages and the swap of water closets, shower heads and faucets without replacing or rearranging valves or pipes.

Honolulu's codified fee schedule charges $50 an hour for an inspection in normal business hours and $75 an hour outside them, both counting travel time, with any part of the first hour billed as a full hour.

Kauai

Kauai adopted the 2018 Uniform Plumbing Code directly by Ordinance No. 1114, including appendices A, B, C, G, I, J, K, L and M. Its permit rule lists who may hold a plumbing permit, including a plumbing contractor licensed under HRS 444, a firm doing incidental plumbing that employs a 448E licensed plumber, and an owner who holds a 448E license.

The Code Edition Question

The state code and PSI's plumber and C-37 exams all run on the 2018 UPC, while DCCA's continuing competency requirement for this cycle is built on the 2021 UPC. That gap likely reflects course content rather than an adopted code, so confirm the operative edition with your county building department before you design to it.

How Long a Hawaii Plumbing License Takes

The statutory floor from first day as a helper to master plumber is seven years, before the Board's calendar is added.

How to Become a Plumber in Hawaii, Step by Step

1. Work as a helper under licensed plumbers for at least five years and 10,000 hours, meeting each EP-02 work process minimum.
2. Collect notarized Experience Verifications from your supervising plumbers and a License Verification from every jurisdiction that ever licensed you.
3. File the application with the $40 fee at least seven days before a Board meeting.
4. After approval, register with PSI inside the two year eligibility window and pass the closed book journey worker exam with 70 percent.
5. Pay the license fee for your year of the cycle, and wear the license on construction job sites.
6. Renew by June 30, 2027 with proof of the 2021 UPC update course, unless your license was issued within one year of the renewal date.
7. After two years registered as a journey worker, apply for the Master Plumber license and pass the 80 question master exam.
8. To sell plumbing work, qualify a business for a C-37: four years of supervisory experience in the last ten, both exams passed within six months, and the required insurance.

Where a Qualifying Agent Fits

Hawaii builds the plumbing company around a named individual. HAR 16-77-69 licenses an entity only when the business is under the direct management of a currently licensed individual who is its principal RME, and HAR 16-77-70 defines direct management as supervising the projects and controlling technical and administrative decisions, personnel, contracts and compliance.

The principal RME must sign or initial all contracts, know every project, and be in residence in the State while the license is in effect or a project is under construction (HAR 16-77-71). Serving as RME for more than one entity is allowed only in limited cases, such as common ownership of at least 51 percent (HAR 16-77-72).

If the RME leaves, the entity has 60 days to notify the Board and 90 days to apply for a new RME or go inactive, and it may not bid or enter new contracts until the Board decides. Missing either deadline forfeits the license automatically, and the departing RME faces matching 60 and 90 day clocks (HAR 16-77-64).

A qualifying agent QUALIFIES the company as an owner or full time W-2 employee who actually supervises the work, which is the model HAR 16-77-69 through 16-77-72 describe. Marshall Schofield and Jeremiah Jaskulski, the industry authorities who founded The Licensing Company, built the firm to place qualifying agents as full time employees who carry those RME duties; read what a qualifying agent is, and if your Hawaii plumbing company needs one, hire a qualifying agent, or see our contractor qualifier services if you are looking to buy into an existing license instead of staffing a new one.

If you could serve as the RME for a Hawaii plumbing company, see become a qualifying agent. The plumbing contractor qualifying agent guide covers the role across states, and a qualifier contingency plan covers the 60 day clock.

Frequently Asked Questions

Does Hawaii have a master plumber license?

Yes. The Master Plumber (PM) license under HRS 448E-5(b)(6) requires two years registered as a Hawaii journey worker plumber, or equivalent licensure elsewhere, and a passing score on PSI's 80 question master exam.

How many hours do you need for a journey worker plumbing license in Hawaii?

At least 10,000 hours over at least five years of full time work as a helper (HRS 448E-5(b)(5)). The Board's EP-02 form also sets minimums by work process, including 2,000 hours each of drainage, waste and vent piping and of water piping.

Do I need college coursework to become a plumber in Hawaii?

No. The community college coursework added by Act 35 in 2010 applies to electricians only, and the plumber provisions of HRS 448E-5 contain no coursework clause.

How much does a Hawaii plumbing license cost?

Board fees are $40 to apply and $102 to $306 at licensure, depending on your year in the cycle, plus $90 to PSI for the exam; active renewal is $306. On the contractor side, the C-37 application fee is $50 and PSI charges $80 to $85 per exam.

Is it illegal to do plumbing without a license in Hawaii?

Yes. HRS 448E-9(a) bars acting as a plumber without a license, and HRS 448E-10(b) fines each violation $100 to $5,000. Contracting for plumbing without a C-37 adds the HRS 444-23 penalties and the bar on suing to collect under HRS 444-22.

Does Hawaii accept a plumbing license from another state?

No. The Board's application states that Hawaii does not reciprocate with any jurisdiction, though two years of licensure in a substantially equivalent jurisdiction can count toward the master exam.

What insurance does a Hawaii plumbing company need?

A C-37 entity needs liability insurance at the Board's minimums, $100,000 bodily injury per person, $300,000 per occurrence and $50,000 property damage per occurrence, plus workers' compensation; a lapse in either forfeits the license automatically. An individual plumber license carries no separate insurance requirement of its own.

How do I check whether a Hawaii plumber is licensed?

Use DCCA's MyPVL public license search. On a job site, licensed plumbers must wear their license, so you can also ask to see it.

Can a company with only a contractor license do plumbing work?

It can contract for the work, but licensed plumbers must do it. If the RME is not licensed under HRS 448E, the company must employ licensed plumbers, and at least half the plumbing crew on site must be licensed and wearing their licenses (HRS 444-9.5).

Can an apprentice do plumbing work in Hawaii without a licensed plumber present?

No. HAR 16-80-4(8) requires a licensee to be physically present and available at the site at all times while unlicensed helpers or apprentices work, with no remote supervision option. Registration under HRS Chapter 372 lets an apprentice work toward a journey worker license, but it is not a license to work alone.

Where can I verify a Hawaii C-37 plumbing contractor's license?

The same DCCA MyPVL public license search covers individual plumber licenses and C-37 contractor entities, including the RME of record. Checking it before signing a contract confirms the license is active and tied to the business doing the work.

Talk to Us About Your Hawaii Plumbing Company

If you run or are building a plumbing company in Hawaii and need a licensed RME who works as a real employee, call The Licensing Company at 615-219-2110 or start at hire a qualifying agent. We will walk through the C-37, the RME rules and what your crew needs to stay compliant.

For the other Hawaii trades, see our Hawaii HVAC license guide and Hawaii electrician license guide, or browse every state guide. Requirements change, so verify with DCCA and your county before relying on them; this article is not legal advice.

Sources

All opened or reconfirmed on October 20, 2026, except where noted. Requirements change, so verify with DCCA, the Contractors License Board and your county before relying on them.

• Board of Electricians and Plumbers, license and renewal page, DCCA, retrieved 2026-10-20
• Requirements for Examination and License, Electricians and Plumbers, form EP-00, DCCA, retrieved 2026-10-20
• Experience Verification, Plumber Only, form EP-02, DCCA, retrieved 2026-10-20
• Electrician and Plumber Application Deadline and Examination Dates, DCCA, retrieved 2026-10-20
• Electrician and Plumber Board Meeting Schedule, 2026, DCCA, retrieved 2026-10-20
• Plumber Continuing Competency Requirements, DCCA, retrieved 2026-10-20
• Electricians and Plumbers FAQ, DCCA
• Hiring Electricians and Plumbers consumer brochure, DCCA Regulated Industries Complaints Office
• MyPVL public license search, DCCA
• HAR Chapter 16-80, Electricians and Plumbers, DCCA
• HRS 448E-1, Definitions, Hawaii State Legislature; site returned an access error on direct retrieval today, text cross-checked against the Board's own forms and pages above
• HRS 448E-5, Minimum requirements, Hawaii State Legislature
• HRS 448E-8, Fees and renewals, Hawaii State Legislature
• HRS 448E-8.5, Continued competency, Hawaii State Legislature
• HRS 448E-9, Unlicensed activity, Hawaii State Legislature
• HRS 448E-10, Suspension, revocation and fines, Hawaii State Legislature
• HRS 448E-12, Inspections, Hawaii State Legislature
• HRS 444-2, Exemptions, Hawaii State Legislature
• HRS 444-2.5, Owner builder exemption, Hawaii State Legislature
• HRS 444-9.5, Performance of electrical and plumbing work, Hawaii State Legislature
• HRS 444-15, Fees and biennial renewals, Hawaii State Legislature
• HRS 444-22, Civil action, Hawaii State Legislature
• HRS 444-23, Violation and penalties, Hawaii State Legislature
• HB846 (2026), proposed amendment to HRS 444-2 handyman exemption, Hawaii State Legislature, status checked 2026-10-20
• HAR Chapter 16-77, Contractors, with Exhibit A classifications, DCCA
• Requirements for License, Contractor Entity, forms CT-00 and CT-01, DCCA, retrieved 2026-10-20
• Contractors License Board Examination, DCCA, retrieved 2026-10-20
• Plumber Examinations Candidate Information Bulletin, PSI Services
• Hawaii Trade available tests and delivery options, PSI Services
• Contractor Examinations Candidate Information Bulletin, dated January 2026, PSI Services, retrieved 2026-10-20
• Hawaii State Plumbing Code, adoption of the Uniform Plumbing Code, Legal Information Institute mirror used because the state's own code site would not load today
• Hawaii State Plumbing Code, building drain definition, Legal Information Institute mirror
• Honolulu ROH 19-1.1, Adoption of the Hawaii State Plumbing Code, City and County of Honolulu, fee figures reconfirmed 2026-10-20
• Kauai Ordinance No. 1114, adoption of the 2018 Uniform Plumbing Code, County of Kauai