Quarterly self-audit for a plumbing contractor business

What to take away

For a plumbing contractor business, treat this as a quarterly self-audit rather than a one-time setup list. Compliance is a state you fall out of, not a task you finish.
Every line needs evidence, not a memory. Write down where the proof lives and who is responsible for it.
Audit each jurisdiction separately. An audit averaged across three towns is wrong in at least two of them.
Record the date you last confirmed each answer with the issuing office. Anything older than a year is unconfirmed.
Score honestly. An audit you always pass is an audit that is not testing anything.

How to run the audit

Set a fixed date each quarter. Work through the sections below, and for each line record three things: whether it holds, where the evidence is, and when it was last confirmed with the office that issues it.

Quarterly audit in four columns

Set a fixed date each quarter
Work through all eight sections
Record status, evidence, last confirmed
Mark yes with no evidence as no
Use four-column format for handover

A line marked yes with no evidence behind it should be marked no. That is the whole discipline.

Use the four-column format for anything you want to be able to hand over.

Item	Status	Evidence location	Last confirmed
One row per obligation	Holds, at risk, or fails	Where the document lives	Date and issuing office

Populate the template with evidence you can retrieve, not placeholder rows. For example:

Credentialstate board lookup or certificate, plus the required education transcript.
Permitpermit number, issuing authority's record, and inspection status in the job file.
Insurance or bondcurrent certificate, declarations or bond document, and the contract or licensing requirement it satisfies.
Employmentclassification record, time records, and proof of required workplace notices.

Section A: Credentials

For each state where we work, record the official name and contact details of the state plumbing licensing board or authority; add each city or county credential office that applies.
Audit the business and individual credentials required for our work: master plumber, journeyman, apprentice registration and supervision, backflow tester, and medical gas credentials where the jurisdiction uses them. Record the holder, credential number, scope, status, and expiration.
Every renewal date is on one calendar with a reminder well ahead of it.
For each credential, record the board's continuing-education hours, accepted courses, and renewal cycle; keep transcripts or completion certificates as evidence.
The scope of each credential has been confirmed against the current service menu, not the one we started with.
Any change in licensed personnel has been reported where reporting is required.
Local registrations are current in every jurisdiction we actually worked in this quarter.

Minnesota, for example, lists Master Plumber, Journeyworker Plumber, Medical Gas Certificate, and separately references Backflow prevention testers and rebuilders; it states master and journeyworker plumbers must complete Minnesota's license and CE rules of 16 hours of approved continuing education in each two-year license period.

Use the license requirements research procedure as an additional way to document a jurisdiction's requirements; this audit still needs the issuing authority, credential status, scope, and evidence recorded for each place you serve.

Section A: Credentials audit

Licenses current, certificates on file
Renewal dates on one calendar
Continuing education complete or scheduled
Credential scope matches current service menu
Personnel changes reported where required
Local registrations current in worked jurisdictions

Section B: Permits and inspections

For each jurisdiction, record the permit-issuing authority having jurisdiction (AHJ), its contact or permit portal, and the job types that require permits.
Every job this quarter that needed a permit has one, and the permit number is on the job record.
Every permit issued has a scheduled or completed inspection; the inspection result is saved with the job record.
No job closed with an open permit.
The permit question is asked during quoting, by process, rather than remembered in the field.
We know the plumbing code adopted by each jurisdiction, including the applicable edition of the International Plumbing Code (IPC) or Uniform Plumbing Code (UPC), local amendments, and when the adoption was last checked.

A failure in this section is almost never one job. It is a process that does not include the question.

Section B: Permits and inspections

Every permit-needing job has a permit
Permit number on the job record
Every permit has scheduled or completed inspection
No job closed with an open permit
Permit question asked during quoting
Code edition known per jurisdiction

Section C: Insurance and bonds

Every policy is current, and the certificates are where a customer can be sent them within an hour.
Cover matches the work actually performed this quarter, including anything new we started selling.
Subcontractor certificates are current and none expired mid-job.
Any customer-required terms in signed contracts are actually reflected in the policies.
Bonds required for licensing or for specific contracts are in force.

Use current declarations, endorsements, certificates, and bond documents to verify those lines. The coverage anatomy is additional reading about policy response and gaps, not a substitute for checking the documents and requirements that apply to this business.

Section D: Employment

For federal tax classification, document the facts considered under the IRS common-law test: behavioral control, financial control, and the relationship between the business and the worker. Apply the separate test required by the state labor department and state law; do not assume one classification test settles every issue.
Wage and hour records exist and are complete. Check travel and on-call time under the Fair Labor Standards Act (FLSA), as administered by the U.S. Department of Labor's Wage and Hour Division, and under the applicable state wage-and-hour law.
Check federal child-labor requirements under the FLSA and any stricter state rule for workers under eighteen; keep the age and work-assignment records needed to verify compliance.
Apprentice supervision arrangements are documented and match the applicable state board's requirements as well as employment rules; see the apprentice supervision requirements.
Required workplace notices are posted where staff actually are; check the U.S. Department of Labor and state labor department posting requirements.
Personnel files hold what they should and nothing they should not.

Section E: Safety

The written safety program exists and has been reviewed in the last twelve months.
Training records are current for every person and every hazard they actually face.
Incidents this quarter were recorded, investigated, and closed with an action.
Personal protective equipment is in service, in date, and appropriate to the work sold.
Requirements for excavation, confined space entry, and hot work have been confirmed for the work we now perform, not the work we performed a year ago.
Equipment inspections are current, with records.

The program structure these lines assume is the one in the Occupational Safety and Health Administration's recommended practices for safety and health programs, which covers management leadership, worker participation, hazard identification, control, training, and evaluation.

Section E: Safety program audit

Written safety program reviewed in last twelve months
Training records current for every hazard faced
Incidents recorded, investigated, closed with action
PPE in service, in date, appropriate
Excavation, confined space, hot work confirmed
Equipment inspections current with records

Section F: Environmental and building condition

We have determined which of our services fall inside the Environmental Protection Agency's renovation, repair and painting requirements for contractors, which describe firm certification, training, and lead-safe work practices for work disturbing painted surfaces in older housing and child occupied facilities.
Where the program applies, certification is current and the work practices are actually followed on site.
We have asked the local code official and the state environmental agency about asbestos-containing materials in the older stock we work in.
Waste, including anything removed from a drain or sewer job, is disposed of the way the receiving facility requires.

Section G: Customers and the public

Contracts and quotes state scope, exclusions, and change approval in plain language.
Any guarantee we advertise is stated with its conditions in the same place.
Claims about credentials are precise about whether they describe a person or the firm.
Where we have premises open to the public, check applicable Americans with Disabilities Act (ADA) obligations against the Department of Justice's ADA guide for small businesses.
A customer who cannot use our main contact channel has another way to reach us.

Section H: Records and tax

Job records carry photographs, notes, materials, and the permit and inspection status.
Invoices treat labor and materials the way our state revenue department told us to, and we have that answer in writing.
Records are backed up somewhere that survives the loss of a vehicle or an office.
The compliance register itself was reviewed this quarter, with changes dated.

Scoring and acting on it

Count the failures rather than the passes. For each failure, write one action, one owner, and one date. Then check those at the next audit before starting the new one.

Two patterns matter more than any single line. An item that fails twice in a row is a process problem rather than an oversight. And an item nobody can find evidence for, quarter after quarter, is usually an obligation nobody actually owns.

Maintain a register for each jurisdiction listing the responsible authority, the requirement it administers, the evidence on file, and the date last checked. If expanding into a new area is on the table, rerun sections A, B, and F for that jurisdiction before taking work there; the market selection approach can help assess the territory, but does not replace checking that jurisdiction's authorities and rules.

Common questions

How long does this take?

A couple of hours a quarter once the evidence is where it should be. The first run takes considerably longer, which is itself a finding.

Who should run it?

Someone who is not personally responsible for most of the lines. An owner auditing their own work finds fewer problems than anyone else would.

What if we fail a lot of lines the first time?

That is the normal outcome and it is the point. Prioritize anything with a legal deadline or a safety consequence, then work down.

Does passing this mean we are compliant?

No. It means the items on this list hold and that you have evidence for them. Requirements vary by state and locality, and yours may include others, so keep the applicable licensing board, permit authority, labor department, and revenue agency in your register and confirm their current requirements.