Poured Concrete Foundation and Structure Contractors (NAICS 238110) — U.S. Industry Primer

1. Overview

Almost every building in America starts the same way: crews dig, set wood or steel forms, tie steel reinforcing bar ("rebar"), and pour wet concrete that hardens into the footings, foundation walls, slabs, columns, and decks that hold the structure up. The specialty subcontractors who do that work are grouped under North American Industry Classification System (NAICS) code 238110 — Poured Concrete Foundation and Structure Contractors.[4] It is one of the largest and most fragmented of the construction "specialty trades."

Why it matters: concrete is the most-used building material on Earth, and this trade sits at the very front of the construction cycle — foundations get poured before framing, wiring, or finishing. That makes the industry an early, high-beta read on residential and non-residential building activity, and a direct beneficiary of the biggest construction stories of the mid-2020s: data centers, power, and factory reshoring. It is also a labor-intensive, thin-margin, cyclical business with almost no pricing power — the economics reward operators, not passive holders.

Public and private ways in differ sharply. This is overwhelmingly a private-company industry; no large listed company cleanly isolates NAICS 238110 revenue on its financial statements. Public-market investors reach the theme indirectly — through a diversified contractor with a self-performed concrete segment (Orion Group Holdings, Sterling Infrastructure), a concrete-pumping services supplier (Concrete Pumping Holdings), large engineering-and-construction (E&C) firms that self-perform structural concrete, or the upstream aggregates, cement, and ready-mix producers that sell the raw material. Private investors buy or roll up the contractors themselves — which is exactly what is happening now.

2. What it is and how it's structured

Scope. A typical contractor estimates, forms, reinforces, places, pumps, vibrates, finishes, and cures concrete. Work includes footings, foundation and basement walls, slabs-on-grade, structural columns and beams, elevated decks, tilt-up and cast-in-place walls, parking structures, industrial foundations, and tanks. The code also covers grout work, shotcrete (sprayed concrete), mud-jacking, concrete pumping, and concrete repair.[4][5] The work spans new construction, additions, alterations, and repair, across both residential and non-residential projects.

Specialty-trade work is usually subcontracted by a general contractor (GC), construction manager, or homebuilder, though contractors also work directly for property owners, especially on repair and remodeling.[5]

What it excludes — the adjacent NAICS codes matter, because federal statistics for 238110 deliberately leave these out:

[4][5]

Ownership mix. The industry is a classic pyramid. At the base are tens of thousands of small, local, often family-owned crews doing residential slabs and small commercial footings. In the middle are regional firms. At the top sits a small tier of large national commercial/structural-concrete specialists — most privately held, several employee-owned through Employee Stock Ownership Plans (ESOPs), and a growing number backed by private equity (PE). Publicly traded ownership is rare and always partial. The federal statistics do not publish a public-versus-private ownership split. Note that public-project exposure is not government ownership — government is generally a customer or funder, not the owner of these contractors.

3. How big it is

Federal statistics (our ground-truth figures) size the employer side of the industry. They combine 2023 County Business Patterns (CBP) with the 2022 Economic Census, so they are not one perfectly comparable annual series.[1][2]

A few things fall straight out of these numbers. The average firm is tiny — about $3.4 million of revenue and roughly 12 employees per establishment.[1][2] Average pay works out to about $70,500 per worker per year.[1] And the business is seasonal: first-quarter payroll ($4.10 billion) runs well under a flat one-quarter share of the $19.24 billion annual total, reflecting the winter slowdown in northern markets where you cannot pour in a hard freeze.[1] (The concentration ratios CR4–CR50 measure the revenue share of the largest 4, 8, 20, and 50 firms; the HHI is a standard 0–10,000 concentration index — see §8.)

Undercount caveat. Two gaps matter. First, CBP and the Economic Census count employer establishments with paid employees; they exclude the self-employed and businesses without payroll, which are numerous in the concrete trades and are tracked separately in Census's Nonemployer Statistics.[6] So the true number of operating outfits is higher than 23,350, though their share of revenue is small. Second, a great deal of foundation and structural-concrete work never shows up in 238110 at all: homebuilders and GCs who self-perform their own concrete book it internally, and public infrastructure concrete is captured inside heavy-civil contractors under other codes. So $78.7 billion is best read as the specialty-subcontractor slice, not total U.S. spending on poured concrete. Private market-research estimates vary widely because they scope the industry differently.

4. The investable universe

There is no pure public play. The biggest poured-concrete contractors in the country are all private. The most direct public exposures are diversified companies where concrete is one piece, plus the material suppliers upstream. None of the listed companies below reports a clean NAICS 238110 revenue line; their investment cases turn on overall segment mix, backlog quality, contract type, claims, leverage, and cash conversion.

Public companies with concrete exposure:

Upstream material suppliers (a common indirect way to play concrete demand — but different economics: quarries, pricing power, capital intensity, not labor):

Homebuilders (D.R. Horton, Lennar, PulteGroup) are the customers on the residential side, not the contractors.

Major private / employee-owned firms (not directly investable, but they define the competitive top tier):

• Baker Construction Enterprises (Monroe, OH) — the nation's largest commercial concrete contractor, family-founded and privately held, ranked Engineering News-Record's (ENR) #1 concrete contractor for 17 consecutive years; revenue on the order of $1.2 billion.[19][20]
• Lithko Contracting (West Chester, OH; ~$1.6 bn) — national commercial-concrete platform backed by The Pritzker Organization, growing through acquisition.[26]
• Concrete Strategies (St. Louis) — the self-perform concrete subsidiary of design-builder Clayco.[27]
• Suntec Concrete (AZ; ~$0.7 bn), Structural Group (~$0.8 bn), Largo Concrete (CA), Ceco Concrete Construction (Kansas City), Kent Companies (Grand Rapids, MI — acquisitive), Miller & Long (Washington, DC).[20]
• Employee-owned general/civil builders with large self-perform concrete: DPR Construction, PCL Construction (100% employee-owned), and McCarthy Building Companies (100% employee-owned) self-perform site, tilt-wall, and structural concrete on their own projects.[28]

5. How the money works

A poured-concrete contractor is, at its core, a labor-and-materials business bidding fixed-price work. The usual chain is owner/developer → GC or construction manager → concrete subcontractor → ready-mix, rebar, pumping, formwork, and equipment suppliers. Four things drive the economics:

1. Revenue is per-project bids. Jobs are priced lump-sum, unit-price (dollars per cubic yard poured or per square foot of slab), cost-plus, or design-build. Residential flatwork commonly runs roughly $4–$15 per square foot; decorative or complex work more.[31] The contractor wins by bidding against many others, then lives or dies on how accurately it estimated. Fixed-price work is attractive when estimating is sharp, but the contractor eats overruns from labor, materials, weather, or site surprises.

2. Margins are thin and pricing power is weak. A healthy job carries roughly a 20%–35% gross margin (what's left after direct labor, concrete, rebar, and equipment), but net margin after overhead, insurance, bonding, and owner pay typically lands around 5%–10%.[31] Because the industry is so fragmented (see §8), no one can raise prices unilaterally — competitive bidding sets the ceiling.

3. Cost control and crew productivity are everything. Labor is usually the single biggest cost and the main variable the contractor controls; ready-mix and rebar are largely passed through at market. Profit comes from utilization — keeping skilled crews and formwork busy across a steady backlog. Idle crews, weather delays, and especially rework destroy margin, and concrete is unforgiving: a bad pour cannot be undone, only demolished and re-poured. Formwork systems, concrete pumps, and prefabrication that speed the pour directly improve the economics.

4. Cash flow and backlog. Contractors carry working capital — they pay for labor and materials before the customer pays, and owners hold back "retainage" (often ~5–10%) until the job is complete, so cash lags reported earnings. Backlog (signed work not yet built) is the key forward revenue indicator. In downturns the risk isn't just fewer jobs — it's getting stuck as an unpaid creditor when a GC or developer goes under, which is why mechanics-lien rights and surety bonding matter. Useful operating gauges: backlog, awarded-but-not-started work, labor-hours per cubic yard, crew/equipment utilization, gross-margin fade, change-order conversion, safety record, receivables/retainage, and bonding capacity.

The right input-cost gauge for this trade is the U.S. Bureau of Labor Statistics (BLS) Producer Price Index (PPI) for ready-mix concrete, steel, and fuel — not factory capacity utilization.[11] For the material suppliers in §4, the economics are the opposite: aggregates and cement are capital-intensive, quarry-and-plant businesses with real local pricing power and fatter margins — a different game from contracting.

6. What drives demand

Demand tracks the volume of things being built, weighted toward the early foundation stage of each project:

• Housing. Foundations and slabs are the first thing built on a new home. In June 2026, privately owned housing starts ran at a seasonally adjusted annual rate (SAAR) of 1.427 million, up 3.5% year over year; single-family starts were about 895,000, roughly flat, held back by high mortgage rates.[7] Multifamily adds podium decks and structural concrete.
• Data centers and power — the standout. AI-driven data-center and power development is the fastest-growing construction segment. The U.S. Department of Energy (DOE) estimated data-center electricity use at 176 terawatt-hours (TWh) in 2023 and projected 325–580 TWh by 2028; that buildout drives enormous demand for site development, deep foundations, massive slabs, and structural podiums, even though it does not translate one-for-one into 238110 revenue.[9] This is the single biggest tailwind for large commercial concrete contractors right now.
• Commercial and industrial. Warehouses, distribution centers, manufacturing plants, hospitals, schools, hotels, and parking structures all need substantial cast-in-place concrete. The chip-fab and EV/battery-plant reshoring wave poured huge foundations in 2023–24, though that pace cooled into 2025–26.
• Public infrastructure. May 2026 construction spending ran (annualized) at about $930.2 billion private residential, $738.7 billion private nonresidential, and $541.2 billion public.[8] The 2021 Infrastructure Investment and Jobs Act (IIJA) supports bridges, transit, and public structures; its surface-transportation authorization lapses around late 2026, a forward risk to public concrete demand.
• Population and replacement needs. Aging buildings, bridge rehabilitation, water infrastructure, and resilience work support steady repair and replacement demand.
• Financing conditions sit underneath all of it: interest rates gate both homebuying and commercial development, making the trade sharply cyclical. The Associated General Contractors of America (AGC) reported more cautious contractor expectations for 2026 — citing recession risk, tariffs, labor, and financing — while naming data centers and power as the standout markets.[10]

7. Regulation

Concrete contracting is regulated more for worker safety and building integrity than for prices or market entry:

• Silica dust. Cutting, grinding, and drilling concrete releases respirable crystalline silica, which causes silicosis. The Occupational Safety and Health Administration (OSHA) construction standard (29 CFR 1926.1153) sets a permissible exposure limit of 50 micrograms per cubic meter of air over an 8-hour day (action level 25), and requires either prescribed "Table 1" dust controls or air monitoring, plus a written exposure-control plan, training, and medical exams. Compliance is a real operating cost for this trade.[14]
• Other OSHA construction standards. Fall protection; the excavation/trenching rules (Subpart P) governing cave-in protection when digging foundations; and the Concrete and Masonry standard (Subpart Q, 29 CFR 1926) covering formwork, shoring, cast-in-place concrete, and rebar-impalement hazards.[15]
• Building codes and engineering standards. The International Building Code (IBC) and International Residential Code (IRC), whose concrete provisions rely on American Concrete Institute (ACI) 318, govern soils, foundations, mix design, rebar, curing, and inspection — as adopted and modified by state and local jurisdictions.[17]
• Stormwater and washout. The Environmental Protection Agency (EPA) requires National Pollutant Discharge Elimination System (NPDES) permit coverage for construction disturbing one acre or more, and treats concrete washout as a regulated pollutant requiring proper management.[16]
• Public-contract wages. The Davis-Bacon and Related Acts require prevailing wages on covered federal and federally assisted projects; some public work also carries project labor agreements.[18]
• Licensing and local rules. State/municipal contractor licensing, permits, inspections, workers'-compensation, insurance, and surety bonding vary by jurisdiction.
• Low-carbon push. Federal "Buy Clean" procurement and Environmental Product Declarations are pushing toward lower-carbon concrete, since cement is a large source of embodied carbon.

8. Competitive dynamics and consolidation

This is one of the most fragmented industries in the entire economy. The federal concentration data make the point starkly: the four largest firms account for just 5.2% of revenue, the top 8 for 7.8%, the top 20 for 12.7%, and even the top 50 for only 19.1%; the HHI is 12.8 — against U.S. antitrust guideline thresholds where anything under 1,500 is already "unconcentrated." Thousands of local crews compete on price for small jobs.[2]

An important nuance: because wet concrete cannot travel far (delivery timing, traffic, and placement windows constrain it), local market concentration can run materially higher than the national figures suggest — that is an inference from the operating model, not a published Census statistic.

Two forces are reshaping the top of the pyramid:

• Scale advantages at the large-commercial end. Big structural-concrete projects (high-rises, data centers, stadiums) require bonding capacity, strong safety records, national homebuilder or GC relationships, owned pumping and formwork fleets, and the ability to field large crews on schedule. Those requirements create a moat for the top tier (Baker, Lithko, etc.) that a two-truck local operator cannot cross.[19][20]
• Private-equity roll-ups and ESOPs. The fragmentation, aging owners, and a chronic labor shortage have made specialty subcontractors a favorite target for PE "buy-and-build" strategies, and subcontractors have accounted for a large and rising share of construction M&A.[30] Acquisitive platforms (Lithko under The Pritzker Organization; Kent Companies) and employee ownership (Baker; PCL; McCarthy; DPR) are the two dominant paths to scale. For scale of the tail: in adjacent concrete pumping, Concrete Pumping Holdings describes roughly 1,000 U.S. participants, most running just five to ten pumps — not a 238110 count, but the same fragmentation story.[23] Meanwhile, upstream producers have mostly retreated from ready-mix to focus on aggregates (Vulcan and Martin Marietta both shed ready-mix plants), leaving the pouring end to specialists.[29]

9. Risks

• Cyclicality. Revenue swings with construction activity and interest rates; foundations are the first thing cut when a project is delayed or cancelled.
• Fixed-price bid risk. Lump-sum bids mean the contractor eats overruns from weather, site surprises, or estimating errors — and concrete rework is expensive and irreversible.[25]
• Labor shortage and immigration enforcement. Skilled field labor is hard to recruit and retain; the industry needs to add hundreds of thousands of workers (one estimate puts the 2026 gap near 349,000), the large foreign-born share of the construction workforce makes it sensitive to immigration enforcement, and most contractors report difficulty filling positions — driving wage inflation and schedule risk.[12][13]
• Input-cost volatility. Ready-mix, rebar/steel, diesel, forms, and equipment can rise faster than fixed-price contracts can be repriced; tariffs on imported cement have added pressure. Track the BLS PPI for ready-mix and steel.[11]
• Thin margins / no pricing power. A few points of cost inflation or under-utilization can erase net profit.
• Weather and site conditions. Heat, cold, precipitation, groundwater, weak soils, and site access disrupt schedules and productivity.
• Payment and counterparty risk. Retainage, slow pay, disputed change orders, and GC or developer insolvency can leave contractors as unpaid creditors.
• Safety and warranty liability. Silica exposure, trench collapse, and fall hazards carry regulatory and workers'-comp exposure; latent foundation defects carry long-tail warranty risk.[14][15]
• Customer and project concentration. Firms tied to one or two national homebuilders, GCs, a single data-center program, or one large public job are exposed if that volume falls.
• Substitution. Wider use of precast and prefabricated concrete can reduce field pouring and finishing in some applications.
• M&A integration risk. Roll-up acquisitions can add debt, goodwill, safety liabilities, and integration complexity if cultures and project controls don't merge.[30]
• Public-funding cliff. Expiration of IIJA surface-transportation authorization in late 2026 is a risk to the public-infrastructure slice of demand.

10. How to invest, and the outlook

Public routes. Because no pure play exists, public-market investors choose among proxies, trading directness for liquidity. Start with the closest operating exposure — Orion Group Holdings (ORN), whose Concrete segment self-performs foundations and tilt-wall work, and Sterling Infrastructure (STRL), which owns residential and commercial concrete-foundation businesses inside a data-center-heavy infrastructure firm.[21][22] For a pour-volume play without bidding risk, Concrete Pumping Holdings (BBCP) supplies pumping services.[23] For broader contractor exposure, Tutor Perini (TPC), Granite (GVA), and Primoris (PRIM) self-perform structural concrete inside larger E&C books. The most liquid indirect route is the upstream aggregates/cement/ready-mix producers — Vulcan (VMC), Martin Marietta (MLM), CRH, Eagle Materials (EXP), Knife River (KNF) — the cleanest way to own "more concrete gets poured," with the caveat that their economics (pricing power, quarries) differ sharply from contracting. In every case, review segment-level revenue, backlog quality, contract type, claims, customer concentration, cash conversion, debt, and safety, and adjust valuation for the non-concrete businesses before comparing multiples.

Private routes. This is where the industry genuinely lives. Options run from directly owning or operating a regional concrete contractor, to backing or building a PE roll-up platform consolidating local firms, to buying into an ESOP-style employee-owned model, to providing private credit or leasing equipment. The most attractive targets are usually regional contractors with strong local relationships, repeat customers, disciplined job-cost accounting, experienced field leadership, clean safety records, adequate bonding, and a credible succession plan. A buy-and-build can add value through shared procurement, equipment, estimating systems, and geographic density — but it can also destroy value if cultures and project controls don't integrate. The trade-off is the operating reality: thin margins, heavy labor management, safety liability, and working-capital intensity. This rewards hands-on operators, not passive capital.

Near-term outlook. The broad U.S. construction market looks soft-but-stabilizing into 2026, so the industry's fortunes are unusually bifurcated. Firms levered to data centers, power, and large commercial structural work should see strong demand; those levered to single-family housing face a rate-dependent, gradual recovery; and manufacturing-megaproject concrete is cooling off its 2023–24 peak.[7][8][9][10] The persistent constraints — a deep skilled-labor shortage worsened by immigration enforcement, and volatile cement/steel input costs — are likely to keep pressure on margins and favor the larger, better-capitalized, more productive operators over the long tail of small crews. In short: a fragmented, cyclical, labor-scarce trade in which scale, safety, and estimating discipline increasingly separate the winners — with an AI-infrastructure tailwind for those positioned to catch it.

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Sources

1. U.S. Census Bureau, County Business Patterns (2023): NAICS 238110 — establishments, employment, annual and first-quarter payroll. https://www.census.gov/programs-surveys/cbp.html
2. U.S. Census Bureau, 2022 Economic Census — Concentration & Receipts, NAICS 238110 (firms, receipts, CR4/CR8/CR20/CR50, HHI). https://www.census.gov/programs-surveys/economic-census/year/2022/data.html
3. U.S. Small Business Administration, Table of Small Business Size Standards (2023), NAICS 238110 = $19 million. https://www.sba.gov/document/support-table-size-standards
4. U.S. Census Bureau, 2022 NAICS — 238110 Poured Concrete Foundation and Structure Contractors, Definition. https://www.census.gov/naics/?details=238110&year=2022
5. U.S. Census Bureau, 2022 NAICS — Specialty Trade Contractors (Subsector 238), scope and cross-references. https://www.census.gov/naics/?details=238&year=2022
6. U.S. Census Bureau, County Business Patterns Methodology and Nonemployer Statistics (coverage of businesses without paid employees). https://www.census.gov/programs-surveys/cbp/technical-documentation/methodology.html
7. U.S. Census Bureau, Monthly New Residential Construction, June 2026 — housing starts (SAAR). https://www.census.gov/construction/nrc/current/index.html
8. U.S. Census Bureau, Monthly Construction Spending, May 2026 — residential/nonresidential/public. https://www.census.gov/construction/c30/current/index.html
9. U.S. Department of Energy, Report Evaluating Increase in Electricity Demand from Data Centers (2024) — 176 TWh (2023); 325–580 TWh (2028). https://www.energy.gov/articles/doe-releases-new-report-evaluating-increase-electricity-demand-data-centers
10. Associated General Contractors of America, 2026 Construction Industry Outlook. https://news.agc.org/economics/2026-construction-industry-outlook/
11. U.S. Bureau of Labor Statistics, Producer Price Index — Ready-Mix Concrete and Related Products; Gordian, Concrete Cost Updates (cement tariff impact). https://www.bls.gov/ppi/
12. Associated Builders and Contractors, 2026 Construction Workforce Shortage (~349,000 additional workers needed). https://www.abc.org/News-Media/News-Releases
13. Associated General Contractors of America / Construction Dive, Workforce Shortages and Immigration Enforcement as a Cause of Project Delays (2025). https://www.agc.org/news
14. U.S. Occupational Safety and Health Administration, Respirable Crystalline Silica — Construction, 29 CFR 1926.1153. https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.1153
15. U.S. OSHA, Concrete and Masonry Construction (29 CFR 1926 Subpart Q) and Excavations (Subpart P). https://www.osha.gov/laws-regs/regulations/standardnumber/1926
16. U.S. Environmental Protection Agency, Stormwater Discharges from Construction Activities (NPDES) and concrete-washout guidance. https://www.epa.gov/npdes/stormwater-discharges-construction-activities
17. International Code Council, 2024 International Building Code, Chapter 19: Concrete (references ACI 318). https://codes.iccsafe.org/content/IBC2024V1.0/chapter-19-concrete
18. U.S. Department of Labor, Davis-Bacon and Related Acts. https://www.dol.gov/agencies/whd/government-contracts/construction
19. Baker Construction, Baker Named ENR's #1 Concrete Contractor for the 17th Consecutive Year (2025). https://bakerconstruction.com/
20. Siteline, Top Concrete Contractors (2025) — private-firm revenue and headquarters. https://www.siteline.com/blog/top-concrete-contractors
21. Orion Group Holdings, Inc. (NYSE: ORN), Form 10-K and Investor Relations — Concrete segment. https://www.oriongroupholdingsinc.com/
22. Sterling Infrastructure, Inc. (Nasdaq: STRL), Building Solutions / Form 10-K (Tealstone, Drake Concrete). https://www.strlco.com/what-we-do/building-solutions/
23. Concrete Pumping Holdings, Inc. (Nasdaq: BBCP), Form 10-K / Investor Relations — segments, fleet, ~1,000-participant U.S. pumping market. https://ir.concretepumpingholdings.com/
24. Granite Construction Incorporated (NYSE: GVA), Form 10-K / Investor Relations. https://investor.graniteconstruction.com/
25. Tutor Perini Corporation (NYSE: TPC), Form 10-K / Investor Relations. https://www.tutorperini.com/
26. Lithko Contracting / The Pritzker Organization — platform ownership and acquisition strategy. https://lithko.com/inside-lithko/
27. Clayco / Concrete Strategies — integrated self-perform concrete subsidiary. https://claycorp.com/
28. Employee-owned self-perform builders: DPR Construction (https://www.dpr.com/), PCL Construction (https://www.pcl.com/), McCarthy Building Companies (https://www.mccarthy.com/).
29. Cemnet, Vulcan Materials Completes Acquisition of U.S. Concrete (2021); Pit & Quarry, producer results and ready-mix divestitures. https://www.cemnet.com/News/story/171315/vulcan-materials-co-completes-acquisition-of-us-concrete.html
30. Construction Dive / Capstone Partners, Construction M&A and Private-Equity Roll-Up Activity, 2024–2025. https://www.constructiondive.com/news/private-equity-risk-construction-affiliated-contractors/822534/
31. HomeGuide, How to Price Concrete Jobs (per-square-foot pricing); Foundation Software, What Profit Margin Should Construction Companies Aim For? (gross/net margin ranges). https://homeguide.com/articles/how-to-price-concrete-jobs