Plumbing Listings

The plumbing services directory at Expert Plumbing Repair organizes contractor and service provider listings across the full spectrum of residential, commercial, and industrial plumbing work in the United States. Listings are structured by service category, geographic coverage, and licensing classification — reflecting the regulatory and operational divisions that define how plumbing work is legally performed and inspected across jurisdictions. The Expert Plumbing Repair Directory Purpose and Scope page details the inclusion criteria and boundary conditions that govern what appears in this index.

How listings are organized

Listings are grouped along three primary axes: service category, license class, and geographic scope. Within service categories, the directory distinguishes between the following classification types:

1. General plumbing repair and maintenance — routine fixture repair, drain clearing, pipe patching, and water heater servicing that falls within the standard journeyman or master plumber scope in most states.
2. New construction and rough-in plumbing — work requiring separate rough-in permits under the International Plumbing Code (IPC) or the Uniform Plumbing Code (UPC), depending on the jurisdiction's adopted standard.
3. Gas line and fuel piping — a distinct licensing category in at least 30 states, governed by the National Fuel Gas Code (NFPA 54) and requiring separate endorsements beyond a standard plumbing license.
4. Backflow prevention and cross-connection control — regulated under EPA drinking water protection rules (Safe Drinking Water Act, 42 U.S.C. § 300f et seq.) and typically requiring ASSE 5110 or equivalent certification.
5. Medical gas and specialized piping — governed by NFPA 99 (Health Care Facilities Code) and requiring ASSE 6010/6030 certification for installers and inspectors in healthcare settings.
6. Sewer and septic systems — often split between licensed plumbers and separate drain layer or septic contractor classifications, which differ by state.

License class distinctions — apprentice, journeyman, and master plumber — are displayed where provider data confirms the applicable credential. The directory cross-references the Expert Plumbing Repair Listings index for active entries within each category.

What each listing covers

Each directory entry is structured to surface the information most relevant to service seekers, procurement professionals, and compliance reviewers. A standard listing includes the following fields:

• Provider name and entity type — individual contractor, licensed business, or franchise affiliate
• Primary service category — drawn from the classification taxonomy above
• License number and issuing authority — state licensing board citation where applicable; in unlicensed states, the relevant registration body
• Service area — defined at the metro, regional, or statewide level; providers claiming national scope must document multi-state licensure or reciprocity agreements
• Permit-pull authority — whether the provider is authorized to obtain permits directly from the Authority Having Jurisdiction (AHJ), a requirement in most IPC and UPC-adopting jurisdictions for work beyond minor repairs
• Inspection alignment — whether the provider's work scope typically triggers third-party inspections under local amendments to the IPC or UPC
• Specialty endorsements — ASSE certifications, EPA Section 608 credentials (for HVAC-adjacent work), or NFPA 54/99 qualifications where declared

Safety framing within listings references OSHA 29 CFR 1926 Subpart P (excavations) for providers performing underground utility work, and OSHA 29 CFR 1910.146 for confined space entry scenarios common in large commercial drain and sewer work.

Geographic distribution

The directory spans all 50 states and the District of Columbia, with listing density reflecting the concentration of licensed plumbing contractors reported by the Bureau of Labor Statistics Occupational Employment and Wage Statistics (OEWS) program. As of the most recent OEWS release, plumbers, pipefitters, and steamfitters represented approximately 480,000 employed workers nationally, with the highest concentrations in California, Texas, Florida, New York, and Illinois.

State-level regulatory variation is significant. Licensing is administered at the state level in 47 states; in the remaining 3 states, licensing authority falls to individual municipalities or counties. This affects how listings are validated: in municipality-licensed jurisdictions, the AHJ name is recorded in the listing rather than a state board citation.

The directory notes where reciprocity agreements exist between states — for example, the multi-state reciprocity network that includes Arkansas, Louisiana, Mississippi, and Oklahoma — since these affect the service area claims a provider can legitimately make. Guidance on interpreting these distinctions is covered in the How to Use This Expert Plumbing Repair Resource page.

How to read an entry

A directory entry is a structured data record, not an endorsement or referral. Readers interpreting an entry should observe the following conventions:

License status indicators reflect the information provided at the time of listing submission. Independent verification against the relevant state licensing board's public lookup tool is the authoritative check — boards such as the California Contractors State License Board (CSLB) and the Texas State Board of Plumbing Examiners (TSBPE) maintain publicly searchable license databases.

Service area declarations are self-reported by providers. Where a listing shows a multi-state service area, the entry will note whether the provider holds licenses in each named state or operates under a general contractor umbrella in jurisdictions that permit it.

Permit-pull authority listed as "yes" indicates the provider has attested to holding an active license class that qualifies for direct permit application in their primary jurisdiction. This field does not substitute for verification with the local AHJ before work begins.

Specialty endorsements are displayed only when the provider has supplied documentation of the named certification. ASSE certification numbers, for example, are verifiable through the ASSE International registry at asseintl.org.

Entries marked as inactive remain in the directory for reference continuity but are visually distinguished from active listings. A provider's presence in the inactive index does not indicate a licensing violation — it may reflect business closure, geographic relocation, or a lapsed renewal that has since been reinstated under a new record.