Authority Industries Glossary of Home Service Terms

The home services industry operates under a dense layer of trade-specific terminology, licensing classifications, and contractual language that directly affects how homeowners engage contractors and how contractors represent their qualifications. This glossary defines the most operationally significant terms used across the Authority Industries network, covering trades from HVAC and plumbing to electrical and general contracting. Understanding these terms supports clearer communication between homeowners and service providers and reduces the risk of mismatched expectations, scope disputes, and regulatory non-compliance.

Definition and scope

A glossary of home service terms is a structured reference document defining trade, legal, contractual, and regulatory vocabulary used across residential and light-commercial service categories. Within the Authority Industries framework, this glossary applies to all trades listed in the Authority Industries Service Category Index and is used as a baseline for contractor onboarding, consumer communication, and dispute evaluation.

The scope covers four primary vocabulary domains:

1. Licensing and credentialing terms — classifications issued by state or municipal licensing boards that define the legal scope of work a contractor may perform
2. Contractual and scope-of-work terms — language appearing in service agreements, change orders, and warranty documents
3. Trade-specific technical terms — standardized definitions used within individual verticals such as electrical, plumbing, HVAC, roofing, and landscaping
4. Consumer protection and regulatory terms — terminology derived from federal and state statutes governing contractor conduct, consumer rights, and dispute resolution

Definitions in this glossary are drawn from public sources including the U.S. Federal Trade Commission, the International Code Council (ICC), and trade-specific bodies such as the National Electrical Contractors Association (NECA).

How it works

Glossary terms function as a shared reference layer between three parties: the homeowner, the contractor, and any intermediary network or directory. When a contractor submits documentation through the Authority Industries Vetting Process, specific credentialing terms such as "master license," "journeyman certificate," and "general liability coverage" carry precise definitions that determine verification outcomes.

Key definitional distinctions that govern contractor classification:

• Master license vs. journeyman license: A master license authorizes independent contracting and the ability to pull permits in most U.S. jurisdictions. A journeyman license permits skilled trade work under the direct supervision of a licensed master. The distinction is enforced by state licensing boards; for example, the Texas Department of Licensing and Regulation (TDLR) separately classifies master electricians and journeyman electricians with distinct examination and experience requirements.
• General contractor vs. specialty contractor: A general contractor (GC) holds broad authority to manage multi-trade residential projects and typically subcontracts specialty work. A specialty contractor is licensed in a single trade—electrical, plumbing, HVAC, or similar—and cannot legally oversee work outside that classification without additional licensure.
• Warranty vs. guarantee: A warranty is a written promise from a manufacturer or contractor to repair or replace defective materials or workmanship within a defined period, enforceable under the Magnuson-Moss Warranty Act (15 U.S.C. § 2301). A guarantee is a contractor's broader performance commitment, which may not carry the same statutory enforcement mechanism.

The Authority Industries Insurance Standards page defines minimum coverage thresholds associated with terms such as "general liability," "workers' compensation," and "errors and omissions."

Common scenarios

Glossary terminology becomes operationally critical in 4 recurring situations within home service engagements:

1. Permit and inspection disputes: Homeowners and contractors disagree on whether a scope of work requires a permit. Terms such as "alteration," "repair," "replacement-in-kind," and "new installation" carry distinct permit triggers under the International Residential Code (IRC), published by the International Code Council.
2. Scope creep and change orders: A "change order" is a formal written amendment to the original contract that modifies scope, cost, or timeline. Failure to use properly executed change orders is a leading source of contractor-consumer disputes tracked by state contractor licensing boards.
3. Insurance certificate verification: When a homeowner requests proof of coverage, terms such as "certificate of insurance (COI)," "additional insured endorsement," and "occurrence-based vs. claims-made policy" determine the actual protection level. The National Association of Insurance Commissioners (NAIC) publishes consumer guidance on reading COIs.
4. Warranty claim eligibility: Disputes over whether a defect falls under "workmanship warranty" versus "material warranty" require clear definitional boundaries. The Authority Industries Service Guarantee Terms page applies these definitions to network-specific commitments.

Decision boundaries

Not every term in common use qualifies as an authoritative definition. The following criteria govern which definitions are adopted within the Authority Industries glossary framework:

• Statutory or regulatory origin: Definitions drawn directly from federal statute, state licensing law, or adopted building code take precedence over industry convention.
• Trade body consensus: Where no statutory definition exists, definitions from recognized bodies—ICC, NECA, Plumbing-Heating-Cooling Contractors Association (PHCC), or similar—are applied.
• Jurisdictional variance: Terms such as "licensed contractor" and "registered contractor" differ by state. In Florida, for example, the Florida Department of Business and Professional Regulation (DBPR) maintains separate classifications for "certified" and "registered" contractors, where certified contractors may operate statewide and registered contractors are limited to jurisdictions where they have passed local examination.
• Network-specific application: Terms used in contractor onboarding, performance scoring, and consumer matching are defined according to the Authority Industries Contractor Performance Metrics and Authority Industries Verified Contractor Criteria frameworks, which may apply stricter standards than the minimum statutory definition.

Terminology conflicts—where a contractor's self-reported classification differs from documented licensure—are resolved through the Authority Industries Dispute Resolution Process.

References

• U.S. Federal Trade Commission — Magnuson-Moss Warranty Act
• International Code Council — 2021 International Residential Code (IRC)
• Texas Department of Licensing and Regulation (TDLR)
• Florida Department of Business and Professional Regulation (DBPR)
• National Association of Insurance Commissioners (NAIC)
• National Electrical Contractors Association (NECA)
• Plumbing-Heating-Cooling Contractors Association (PHCC)
• International Code Council — Code Development