Concrete Listings

The National Concrete Authority directory aggregates verified listings of concrete contractors, suppliers, inspectors, and related service providers operating across the United States. This page describes how listings are classified, how the directory maintains accuracy, and how professionals and project owners can use these records alongside licensing databases, permitting offices, and industry standards bodies. Understanding the structure of this listing system supports faster, more reliable service sourcing decisions in a sector governed by distinct qualification levels and code requirements.

Listing categories

Concrete service listings in this directory are organized across five primary professional categories, each with distinct licensing, bonding, and regulatory exposure:

1. Concrete contractors (general) — Firms performing flatwork, foundation pours, decorative concrete, and structural placements. Licensing requirements vary by state; California, Texas, and Florida each maintain separate contractor license boards with concrete-specific classifications.
2. Specialty concrete contractors — Providers whose scope is limited to defined sub-trades, including post-tension systems, precast installation, tilt-up construction, or shotcrete application. These firms frequently hold American Concrete Institute (ACI) certifications in addition to state trade licenses.
3. Concrete suppliers and ready-mix producers — Plants and dispatch operations supplying mixed concrete to job sites. Mix design compliance is typically governed by ASTM International standards, including ASTM C94 for ready-mixed concrete.
4. Testing and inspection services — Independent third-party labs and field inspectors providing services under ACI 311 (Guide for Concrete Inspection) and ICC/IBC structural observation requirements. Many jurisdictions require these firms to hold separate special inspection agency certification.
5. Concrete repair and restoration contractors — Firms operating under ICRI (International Concrete Repair Institute) technical guidelines, including surface preparation standards and material compatibility classifications.

Listing entries for each category include business name, primary service geography, licensing jurisdiction, and where available, active certification references. For broader framing of what this directory covers, see the Concrete Directory Purpose and Scope page.

How currency is maintained

Directory listings are subject to periodic verification against primary public sources, including state contractor licensing portals, the ACI certification registry, and county business registration records. The concrete services sector experiences measurable contractor churn; the U.S. Bureau of Labor Statistics Quarterly Census of Employment and Wages records construction trade establishment entries and exits at a national level, providing a structural benchmark for update frequency.

Listings flagged as inactive, unlicensed, or outside a stated service region are removed from active display. Listings that carry OSHA compliance violations under 29 CFR Part 1926 Subpart Q (concrete and masonry construction) may be annotated or suppressed depending on the severity and resolution status of the citation. OSHA's public inspection data, available through the agency's enforcement database at osha.gov, is used as one input in this review process.

New listings submitted through the contact process are reviewed against state license verification before publication.

How to use listings alongside other resources

A directory listing is a reference point, not a credential verification system. Professionals and project owners sourcing concrete services should cross-reference listings against at minimum three external sources:

• State licensing boards — Every listed contractor's license number should be confirmed active through the issuing state's portal. License status can change between directory update cycles.
• ACI and ICRI certification registries — For specialty work including post-tension, structural repair, or decorative overlays, certification status is verifiable through the respective organization's public lookup tools.
• Local permitting and inspection offices — Concrete work on structures, foundations, and public right-of-way typically requires a building permit in jurisdictions operating under the International Building Code (IBC) or its state-adopted equivalent. The authority having jurisdiction (AHJ) determines which inspection hold points apply, including pre-pour, placement, and curing phase inspections.

For a structured explanation of how the directory functions as a research tool in the broader project sourcing process, see How to Use This Concrete Resource. The Concrete Listings index itself is the operational entry point for filtered searches by service type and state.

Listings alone do not substitute for contract review, insurance certificate verification, or scope-of-work alignment. Project owners in jurisdictions requiring special inspections under IBC Section 1705 must confirm that inspection firms listed here hold current approval from the local building department.

How listings are organized

Listings are structured with a consistent data schema across all five professional categories to enable direct comparison. The primary organizational axes are:

• Service type — Mapped to the five categories described above, with secondary tags for specific capabilities (e.g., stamped concrete, fiber-reinforced concrete, pervious concrete).
• Geographic coverage — Organized by state, with metro-area refinement for high-density markets. A contractor listed under a state header may or may not hold licensure in all counties within that state; license scope verification remains the user's responsibility.
• Certification tier — Listings that carry named third-party certifications (ACI Field Testing Technician, ICRI Concrete Surface Profile rating familiarity, NRMCA plant certification) are distinguished from those that do not, enabling users to filter by qualification depth.

The distinction between a general concrete contractor and a specialty concrete contractor reflects a regulatory boundary that exists explicitly in states including California (CSLB Class C-8 versus Class A general engineering) and Washington (specialty contractor registration). This boundary matters for permitting: structural pours on commercial projects typically require a contractor whose license classification covers structural work, not merely flatwork or decorative applications.

Listings are not ranked by quality, revenue, or review score. The directory functions as a neutral reference index — classification and geographic placement are the organizing principles, not editorial judgment. That structural neutrality is described in detail on the Concrete Directory Purpose and Scope page.

References

• 28 CFR Part 35 — Nondiscrimination on the Basis of Disability in State and Local Government Services
• 29 CFR Part 1926 — Safety and Health Regulations for Construction
• Advisory Council on Historic Preservation — Section 106 of the National Historic Preservation Act
• ADA Standards for Accessible Design — U.S. Department of Justice
• 2010 ADA Standards for Accessible Design — U.S. Department of Justice
• North American Industry Classification System (NAICS) under code 238990
• 21 CFR Part 110 — Current Good Manufacturing Practice in Manufacturing, Packing, or Holding Human Fo
• 21 CFR Part 177 — Indirect Food Additives: Polymers, U.S. FDA / Electronic Code of Federal Regulatio