Plumbing inspector jobs come from three kinds of employer: state agencies, city and county building departments, and private firms.
Local government employs the largest single group of inspectors, and private professional-services firms employ nearly as many.
Which one you work under sets the jurisdiction you enforce; pay and benefits are set employer by employer.
This guide breaks down each employer type and where the jobs sit.
Who hires plumbing inspectors?
Start with the federal count.
The Bureau of Labor Statistics counted 146,720 wage-and-salary jobs in Construction and Building Inspectors (SOC 47-4011) nationally in May 2025 — the category BLS groups plumbing and mechanical inspectors into, so every national number about "plumbing inspectors" is really about that broader group.
The two largest employer groups sit at nearly equal scale.
Local government, excluding schools and hospitals, is the largest single group with 53,640 inspectors in May 2025.
Architectural, engineering, and related services — the private-firm side — employed 47,310, with 5,890 more in other professional, scientific, and technical services.
Since 53,640 is well under half of 146,720, most inspectors work outside local government, and the city-hall image is only part of the market.
By state, the most construction and building inspector jobs in May 2025 were in Texas (18,230), Florida (13,860), California (13,420), New York (11,160) and Virginia (6,550) — all-inspector numbers, not plumbing-only counts, because BLS does not publish a separate plumbing-inspector count.
Those employer types behave differently, and the differences are what this page is about: a state plumbing inspector answers to a state agency, a city or county inspector to the local building department, and a third-party inspector to a private employer.
If you're still weighing the job itself — what inspectors do and what the work runs on — our plumbing inspector guide covers the role in full.
State plumbing inspection programs
State involvement in plumbing inspection comes in two kinds in our research: one fact covers who runs inspection itself, and the rest cover how a state licences or regulates inspectors, whoever employs them.
The sourced examples:
- Alaska. The state plumbing inspection jurisdiction covers communities of 2,500 population and above. The Municipality of Anchorage inspects under an agreement, but a state Certificate of Fitness (COF) — the certificate Alaska requires to do plumbing work — is still required.
- Texas. The Texas State Board of Plumbing Examiners (TSBPE) licenses plumbers statewide, and Plumbing Inspector is one of its four licence classes, alongside Tradesman Plumber-Limited, Journeyman Plumber and Master Plumber — so there, inspecting is a state-licensed activity. One exclusion sits on the licence itself: a Plumbing Inspector licence holder cannot be a Responsible Master Plumber, a designation that requires a current Texas Master Plumber licence, good standing with TSBPE and proof of at least $300,000 commercial liability insurance.
- Maryland. The Maryland State Board of Plumbing requires continuing education — 8 hours a year — for plumbing inspectors only; plumbers aren't covered by that requirement.
Note what each fact covers: only the Alaska one is about who runs inspection itself — a state jurisdiction covering communities of 2,500 population and above.
The Texas and Maryland facts are about the state's hold on the inspector's licence and upkeep, and they reach inspectors however they're employed.
How far each state's program reaches is the state's own call.
Our research did not confirm how every state runs plumbing inspection; for states we haven't sourced, Massachusetts and Illinois among them, start with the state agency that issues plumbing licences.
Inspection programs are set by each state — verify before you apply
City and county building departments
Local government, excluding schools and hospitals, is the largest single employer group in the occupation's industry counts: 53,640 construction and building inspectors in May 2025 — a group that spans every kind of local government, not just cities and counties.
For inspectors in these jobs, the work is code enforcement: checking installed plumbing against the plumbing code a city or county enforces.
The state above the department shows up in the licensing layer, and the sourced examples run both ways.
Florida has no statewide journeyman plumber licence: counties and municipalities issue plumbing journeyman licences under s.
489.1455, Florida Statutes, and those licences are portable between Florida localities.
Iowa runs the other way — state licensing preempts city and county plumbing and mechanical licensing, and local licences became void on July 1, 2009, though cities there may still charge permit and inspection fees.
Both are facts about who issues the licences, not who employs the inspector.
By metro area in May 2025, the most construction and building inspector jobs were in New York-Newark-Jersey City (10,340), Dallas-Fort Worth-Arlington (5,450), Houston-Pasadena-The Woodlands (4,980), Miami-Fort Lauderdale-West Palm Beach (4,380) and Washington-Arlington-Alexandria (4,060).
Third-party inspection firms
The private sector is nearly as large an employer as local government.
Architectural, engineering, and related services employed 47,310 construction and building inspectors in May 2025, and other professional, scientific, and technical services another 5,890.
The federal categories don't say what each firm does — inspection work performed for jurisdictions under contract versus inspection for the firm's own projects isn't broken out in the data — but the scale is the point: private employers hire inspectors at close to the volume city and county departments do.
The part of the hiring picture with published detail is the certification layer.
ICC's P1 Residential Plumbing Inspector and P2 Commercial Plumbing Inspector are ICC's plumbing inspector exams — the P2 covers commercially installed plumbing systems, storm water, special waste, and non-flammable medical and non-medical oxygen piping under the International Plumbing Code, and ICC's published outline lists P1 at 60 multiple-choice questions with a 2-hour, open-book limit (the outlines are dated, so confirm the current format in ICC's catalog).
ASSE International's Series 16000 (2019, reaffirmed 2025) runs parallel: 16010 Plumbing Inspector, 16020 Mechanical Inspector, 16040 Plumbing Plan Examiner and 16050 Mechanical Plans Examiner.
What we can't tell you is the hiring screen.
Whether a given firm wants a journeyman card, a specific ICC certification or a state inspector licence wasn't confirmed by our research — plumbing-inspector hiring requirements didn't get sourced.
Read each posting closely and ask the employer what it accepts, exactly as you would with a city department.
Pay and pensions
Pay first, with the standing caveat: BLS publishes no wage for "plumbing inspector" as a title — the title sits inside SOC 47-4011, Construction and Building Inspectors.
That category's national median was $74,690 a year ($35.91 an hour) in May 2025; the mean was $77,730 a year ($37.37 an hour).
The full state tables are on our plumbing inspector salary page.
The pay data we pulled doesn't split the occupation government-versus-private, so no verified figure says which employer type pays more.
The one employer-type signal in the pay data points away from both city hall and the engineering office: the highest-paying industries for the category were energy and utility niches — electric power generation, transmission and distribution at $107,460, oil and gas extraction at $107,090, and natural gas distribution at $105,630 (annual medians, May 2025) — small niches, not typical jobs.
Pension terms are set by the employer, and our data here is thin.
The benefit figures we hold, from BLS's Employee Benefits series for March 2026, are private-industry numbers: 72% of private-industry workers had access to employer retirement benefits and 52% participated, with access running from 55% at establishments with 1–49 workers to 91% at establishments with 500+.
Those are all-occupation benchmarks, not inspector figures, and our research carries no figures for government retirement plans.
Ask the department or agency directly; it's the source that knows its own plan.
The pension data that does exist on the trade side covers UA-represented trade workers — plumbers, pipefitters, sprinkler fitters, service technicians and welders — not inspectors: the United Association National Pension Fund, established in July 1968, is a multiemployer defined-benefit plan for employees represented by the UA or a UA local, and not every UA local participates in it.
Career information, not legal advice — licensing and inspection rules are set by the state agency or the city and county involved, and retirement benefits by the employer, and they change. Confirm the current rules with that employer or licensing board before you act on them.