Contact

Installation Authority serves as a national reference provider network for the construction installation sector, covering contractor providers, licensing frameworks, regulatory classifications, and trade-specific standards across the United States. This contact page describes the geographic and subject-matter scope of inquiries the provider network handles, outlines what information produces a useful response, and explains the expected process for follow-up.

Service area covered

Installation Authority operates at national scope, covering construction installation services, contractor classifications, and regulatory frameworks across all 50 US states and the District of Columbia. The provider network addresses installation activity governed by the International Building Code (IBC), International Residential Code (IRC), National Electrical Code (NFPA 70), International Mechanical Code (IMC), International Plumbing Code (IPC), and state-level adoptions and amendments of those model codes.

The subject-matter scope spans all 16 MasterFormat divisions as published by the Construction Specifications Institute (CSI MasterFormat 2020), from Division 03 (Concrete) through Division 48 (Electrical Power Generation). Inquiries are accepted for the following categories of construction installation:

1. Structural and civil installation — foundations, concrete, masonry, steel framing, and wood framing covered under IBC Chapters 16–23
2. Mechanical installation — HVAC equipment, ductwork, piping systems, and combustion appliances governed by the IMC and NFPA standards
3. Electrical installation — service entrance equipment, distribution panels, branch circuits, and lighting systems regulated under NFPA 70 and state electrical codes
4. Plumbing installation — supply, drainage, waste, and vent systems under the IPC and Uniform Plumbing Code (UPC)
5. Specialty and finishing installation — insulation, roofing, glazing, cladding systems, and interior finishes classified under MasterFormat Divisions 07–09
6. Fire protection installation — sprinkler systems, fire alarm equipment, and suppression systems regulated under NFPA 13, NFPA 72, and NFPA 25
7. Site and utility installation — earthwork, underground utilities, and site infrastructure addressed in MasterFormat Division 31–33

Inquiries falling outside US commercial, residential, or industrial construction — including international projects, pure design consulting without installation scope, or unrelated sectors — are outside the provider network's defined scope.

What to include in your message

Messages that produce accurate, timely responses contain specific information rather than general requests. The provider network handles a high volume of inquiries across trade categories and jurisdictions, and incomplete submissions require follow-up rounds that delay resolution.

A complete inquiry includes the following elements:

1. Project type and use classification — residential (R occupancy), commercial (B, M, or A occupancy), industrial (F or H occupancy), or mixed-use, using IBC Chapter 3 occupancy classifications where applicable
2. Trade division or installation category — reference the MasterFormat division number or a plain trade description (e.g., "Division 26 electrical rough-in" or "mechanical HVAC installation")
3. Geographic jurisdiction — state and county at minimum; city or municipality if the project falls within an incorporated area with independent permitting authority
4. Licensing or regulatory question — if the inquiry concerns contractor licensing, specify the license class (e.g., Class A General Contractor, Journeyman Electrician, Master Plumber) and the issuing state board
5. Permitting context — if the inquiry relates to permit applications, inspections, or code compliance, note the applicable code edition adopted by the jurisdiction (e.g., 2021 IBC, 2020 NEC)
6. Project phase — pre-construction, active installation, inspection hold, or post-installation deficiency
7. Provider Network provider inquiry — if the message concerns a contractor provider in the Installation Providers section, include the business name, license number, and state of licensure

Submissions referencing OSHA compliance should note the applicable OSHA standard designation (e.g., 29 CFR 1926 for construction, 29 CFR 1910 for general industry) rather than describing the situation in general terms.

Response expectations

Installation Authority processes inquiries according to subject-matter category and completeness. Provider Network provider questions and factual reference inquiries receive priority handling. Inquiries that require cross-referencing multiple jurisdictional code adoptions or verifying license status through state board databases require additional processing time.

Standard response timeframes by category:

• Provider Network provider and corrections — 3 to 5 business days
• Regulatory reference questions (code citations, license class definitions) — 2 to 4 business days
• Jurisdictional scope clarifications (which code edition applies, which agency has authority) — 4 to 7 business days
• Partnership and data licensing inquiries — 7 to 10 business days

Responses are provided in writing. Installation Authority does not provide verbal consultations, project-specific legal interpretations, or engineering opinions. Regulatory information provided by this provider network reflects publicly available code language from named agencies — the IBC, NEC, IMC, IPC, and OSHA standards — and does not constitute professional advice.

Inquiries that request contractor referrals for active projects are directed to the Installation Providers section, which maintains classified providers by trade division and state.

Additional contact options

Beyond direct message submission, the provider network maintains structured reference resources that resolve the majority of factual questions without requiring direct contact.

The Installation Providers page provides searchable contractor records organized by MasterFormat division, state, and license classification. Each provider references the issuing state licensing board and applicable trade category.

For questions about how this provider network is structured, what data sources inform its providers, and how classification boundaries are defined, the page addresses those topics directly against the MasterFormat 2020 taxonomy and applicable model code frameworks.

The How to Use This Installation Resource page documents the provider network's navigation structure, classification logic, and the regulatory bodies whose licensing and permitting standards are reflected in contractor records.

For OSHA-related construction safety inquiries beyond the provider network's scope, the Occupational Safety and Health Administration publishes construction standards at osha.gov/construction. For model code adoption status by state, the International Code Council maintains adoption maps at iccsafe.org.

References

• osha.gov/construction
• iccsafe.org