Commercial and Institutional Building Construction (U.S.) — Level Primer

NAICS 2022 code 23622. NAICS is the North American Industry Classification System, the standard the U.S. government uses to group businesses by what they do. This page covers the NAICS industry (the 5-digit level). It contains a single child industry, 236220, so this level and that child are effectively the same thing.

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1. Overview

NAICS 23622 is the part of the economy that builds almost every non-home, non-factory building you use: office towers, hospitals, schools and universities, hotels, shopping centers, warehouses, sports arenas, courthouses, airport terminals — and, increasingly, the data centers that house artificial-intelligence (AI) computing. The firms here are general contractors, design-build firms, and construction managers that take responsibility for delivering a finished building, mostly by coordinating a chain of specialty subcontractors [1].

At its core this is a project-execution business: a contractor earns a fee or markup for coordinating design, labor, materials, subcontractors, schedule, and risk, and keeps a thin margin on a large flow of money. It is large, cyclical, low-margin, and strikingly fragmented — and right now unusually split, with a historic AI-and-manufacturing building boom on one side and stagnant offices, retail, and hotels on the other [10][11].

Because this 5-digit level has only one child industry, everything below is a summary. For the full detail — the project chain, contract types, the named builders and public tickers, regulation, and the outlook — read the [236220] primer. This page gives the level's own official figures and points you there.

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2. What's inside — and why the level equals its one child

The NAICS hierarchy narrows step by step: sector 23 (Construction) → subsector 236 (Construction of Buildings) → industry group 2362 (Nonresidential Building Construction) → this industry 23622 (Commercial and Institutional Building Construction) → national industry 236220.

At the 5-digit level, 23622 has exactly one 6-digit child:

When a NAICS industry has a single national industry beneath it, the two are definitionally the same set of establishments; the 6-digit code exists only to complete the numbering system. So 23622's scope, size, and economics are 236220's. (Its sibling under group 2362 is 236210, Industrial Building Construction — factories and heavy industrial plants — which is a separate industry, not part of this level.)

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3. Size (this level's rollup figures)

These are our ground-truth federal statistics for NAICS 23622, which — because of the single-child structure — equal 236220's. Note the periods differ: receipts, firm count, and concentration come from the 2022 Economic Census, while employment, payroll, and establishments come from 2023 County Business Patterns (CBP), so they are not directly comparable.

Concentration — extraordinarily fragmented. In 2022 the top 4 firms held just 6.8% of receipts (the CR4, or four-firm concentration ratio), the top 8 held 10.5% (CR8), the top 20 held 17.6%, and the top 50 held 25.4%, for a Herfindahl-Hirschman Index (HHI, a standard concentration gauge running from near 0 to 10,000 for a monopoly) of just 23.1 [2].

Undercount and read-with-care caveats.

• Very small operators are undercounted. CBP covers only employer establishments with paid employees; it excludes the self-employed and nonemployer firms [4]. One-person design-build shops and tiny independent construction managers are therefore understated — though small/individual ownership matters less in commercial and institutional work than in home building, so the effect is milder here than in the residential codes.
• Receipts overstate value added. Under the general-contractor model most project dollars pass straight through to subcontractors and suppliers; payroll is only about 11% of receipts [2][3], so the builders' own value-add is a thin layer on a large flow.
• No official margin or backlog exists. Federal data publish no NAICS-23622 operating margin, order backlog, win rate, or input-cost index; do not infer any from a single contractor's results.

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4. Investable universe — where value concentrates

Because 23622 is identical to 236220, the investable picture is the same, and the blunt truth holds: there is no large, pure-play, publicly traded U.S. commercial-building general contractor. The giants are private, and public exposure is indirect. Value and margin concentrate away from plain general contracting toward:

• The private building giants — Turner, Bechtel, Whiting-Turner, DPR, Kiewit, Mortenson, Clark, McCarthy — mostly family-owned, employee-owned (via employee stock ownership plans, or ESOPs), or foreign-parented [14][15][13].
• Specialty-trade contractors, which sit in a different NAICS code (238) but ride the same building demand at higher, more defensible margins — the cleanest listed way in.
• Diversified and foreign-listed contractors that blend U.S. building work with civil, industrial, or international operations.

Named firms, tickers, and how each is accessed are in the [236220] primer, section 4 (tickers belong there and in "how to invest," not on this summary page).

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5. How the money works

A commercial/institutional builder is financially a risk-managed pass-through: it collects a large contract value, pays most of it out, and keeps a thin margin for coordinating the work and absorbing risk. The mechanics that matter (detailed in [236220]):

• Revenue is recognized over time (percentage-of-completion), so accurate cost estimating drives reported earnings and a single mis-bid surfaces as a margin write-down.
• Backlog — signed, not-yet-built work — is the single most-watched gauge, tracked for both size (months of work) and embedded gross margin.
• Contract structure sets who bears risk, from fixed-price/lump-sum (builder eats overruns) through guaranteed maximum price and unit-price to cost-plus (owner bears more).
• Margins are thin — private benchmarks put general-contractor net margins near 5–6% [22] — and working capital and cash timing (retainage, slow payment) can make a paper-profitable builder fail on liquidity.

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6. Demand drivers

Demand is derived from the economics of the buildings themselves, so the level is deeply cyclical and interest-rate sensitive. The main forces:

• Data centers and AI — the dominant swing factor, now carrying the industry's top line; data-center spending jumped ~32% in 2025 [10][12].
• Interest rates and financing — commercial buildings are debt-financed, so higher rates delay projects [8][10].
• Corporate capital spending for offices, warehouses, and retail (structurally softer post-pandemic).
• Institutional and public budgets for hospitals, schools, universities, and government buildings, which follow demographics and appropriations [11].
• Reshoring/industrial policy, renovation and compliance work, and tourism/events round out the mix [12].

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7. Regulation

Construction is regulated at the point of work rather than as an industry of licensed franchises, and the layers are the same across this level and its child:

• State/local licensing, building codes, permits, and zoning — the U.S. has no single national building code [18].
• Federal worker safety under the Occupational Safety and Health Administration (OSHA), 29 CFR Part 1926 [16].
• Prevailing-wage rules on public work (Davis-Bacon and Related Acts) [17] and domestic-materials requirements (Buy America / Buy American) [19].
• Surety bonding, which effectively caps how much work a contractor can take and is a real barrier to scaling.
• Environmental rules (asbestos and lead RRP, stormwater/air permitting) on many renovations and demolitions [20][21].

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8. Consolidation

• Fragmentation is the defining trait — ~39,000 firms with the top 4 under 7% of receipts [2].
• General contracting has resisted roll-ups (low barriers, people-and-process businesses, local reputation), so the merger action sits in specialty trades (mechanical, electrical, HVAC, roofing, fire protection), where recurring service revenue and higher margins support consolidation [14].
• ESOPs are the dominant succession-and-retention tool: the number of ESOP construction firms roughly grew from ~700 to over 1,100 in a decade [14].
• Foreign ownership at the top means some of the industry's profits accrue to overseas public shareholders [15][16].

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9. Risks

The same risk set applies to the level as to 236220: cyclicality and interest-rate sensitivity; concentration on the data-center/AI theme (if the build-out cools, much of recent growth reverses) [10][11]; thin margins and fixed-price execution risk [22]; claims and change orders; input-cost and tariff volatility [8]; a persistent skilled-labor shortage (the industry must attract ~349,000 additional workers in 2026) [9]; working-capital and payment risk; and safety and environmental liability.

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10. How to invest and outlook

How to invest. Because pure-play building general contractors are almost all private, public investors reach this level indirectly — through specialty-trade contractors, diversified/civil-plus-building contractors, design/program managers, or foreign-listed parents — while private investors reach it through direct ownership, ESOP participation, and private equity in the higher-margin specialty niches. The specific tickers, private owners, and underwriting checklist live in the [236220] primer, sections 4 and 10.

Outlook. The base case entering 2026 is a genuinely two-speed market: data centers, AI infrastructure, healthcare, education, and renovation strong; offices, retail, hotels, and winding-down manufacturing mega-projects weak [10][11][12]. The American Institute of Architects' (AIA) July 2026 consensus forecast expects total nonresidential building spending to fall 0.3% in 2026 and rise 3.0% in 2027, with the commercial line carried almost entirely by data centers [13]. The durable lesson is structural: this is a fragmented, thin-margin, execution-driven level where money is made through backlog discipline, risk control, and — on the public side — through the specialty trades and diversified contractors rather than the private building giants themselves.

For everything in full, see the [236220] primer.

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Sources

Drawn from the child primer (236220); numbering matches that page.

1. U.S. Census Bureau, NAICS 2022 definition — 236220 Commercial and Institutional Building Construction (scope and exclusions), 2022. https://www.census.gov/naics/?details=236220&input=236220&year=2022
2. U.S. Census Bureau, 2022 Economic Census — Concentration of Largest Firms, NAICS 236220 (receipts, firm count, CR4/CR8/CR20/CR50, HHI), 2022. https://data.census.gov/table/ECNSIZE2022
3. U.S. Census Bureau, County Business Patterns 2023, NAICS 236220 (establishments, employment, annual payroll), 2023. https://data.census.gov/table/CBP2023.CB2300CBP
4. U.S. Census Bureau, County Business Patterns — Methodology (coverage of employer establishments), 2026. https://www.census.gov/programs-surveys/cbp/technical-documentation/methodology.html
5. Associated Builders and Contractors, "Construction Materials Costs" (input prices year-over-year), 2026. https://www.abc.org/News-Media/News-Releases/abc-construction-materials-costs-fall-with-oil-prices-in-june
6. Associated Builders and Contractors, "Construction Industry Must Attract 349,000 Workers in 2026," 2026. https://www.abc.org/News-Media/News-Releases/abc-construction-industry-must-attract-349000-workers-in-2026-despite-macroeconomic-headwinds
7. Associated Builders and Contractors / Construction Owners, "Construction Outlook 2026: Data Center Boom Masks Broader Industry Slowdown," 2026. https://www.constructionowners.com/news/construction-outlook-darkens-as-data-center-boom-masks-broader-industry-slowdown
8. Construction Dive, "The top commercial contractors of 2026: ENR," 2026. https://www.constructiondive.com/news/top-commercial-contractors-revenue-2026-enr/820930/
9. Wolf Street, "Construction Spending on Data Centers, Factories, Powerplants, and Office Buildings," 2026. https://wolfstreet.com/2026/02/28/construction-spending-on-data-centers-factories-powerplants-and-office-buildings-boom-bust-and-in-between/
10. American Institute of Architects, "July 2026 Consensus Construction Forecast," 2026. https://www.aia.org/resource-center/july-2026-consensus-construction-forecast
11. Engineering News-Record, "2026 Top 400 Contractors," 2026. https://www.enr.com/toplists/2026-Top-400-Contractors-2
12. Construction Briefing, "5 things we learned from Turner and Flatiron owner HOCHTIEF's latest trading update" (Turner ownership via HOCHTIEF/ACS), 2026. https://www.constructionbriefing.com/news/5-things-we-learned-from-turner-and-flatiron-owner-hochtiefs-latest-trading-update/8028896.article
13. HOCHTIEF, "HOCHTIEF Worldwide" (owns Turner; Xetra listing), 2026. https://www.hochtief.com/about-hochtief/hochtief-worldwide
14. BDO / NCEO (National Center for Employee Ownership), "Employee Stock Ownership Plans Gain Traction in the Construction Industry" (fragmentation, ESOP prevalence), 2025. https://www.bdo.com/insights/tax/employee-stock-ownership-plans-gain-traction-in-the-construction-industry
15. Employee-ownership statements — DPR Construction, https://www.dpr.com/media/press-releases/dpr-celebrates-35; PCL Construction, https://www.pcl.com/us/en/newsroom/press-releases/pcl-construction-ranks-11-on-enr-2025-top-400-contractors-list; McCarthy Building Companies, https://www.mccarthy.com/about, 2025–2026.
16. Occupational Safety and Health Administration, "Construction Industry Compliance" (29 CFR Part 1926), 2026. https://www.osha.gov/construction/compliance
17. U.S. Department of Labor, Wage and Hour Division, "Davis-Bacon and Related Acts," 2026. https://www.dol.gov/agencies/whd/government-contracts/construction
18. U.S. Department of Energy, "Energy Codes 101" (no single national building code), 2016. https://www.energy.gov/cmei/buildings/articles/energy-codes-101-what-does-role
19. Acquisition.gov, "Buy American — Construction Materials (FAR subpart 25.2)," 2026. https://www.acquisition.gov/far/subpart-25.2
20. U.S. Environmental Protection Agency, "Asbestos NESHAP," 2026. https://www.epa.gov/asbestos/overview-asbestos-national-emission-standards-hazardous-air-pollutants-neshap
21. U.S. Environmental Protection Agency, "Renovation, Repair and Painting Program," 2026. https://www.epa.gov/lead/renovation-repair-and-painting-program-contractors
22. Siana Marketing / Bridgit, "General Contractor Profit Margin: 2026 Industry Data & Benchmarks" (non-official benchmarks: gross ~12–16%, net ~5–6%), 2026. https://www.sianamarketing.com/resources/general-contractor-profit-margin