Residential Building Construction (United States) — NAICS 2361

A Histometrics rollup primer for public- and private-market investors. This is a short pass-through page: at the four-digit level, NAICS 2361 is effectively identical to its single child, 23611. For the full analysis — the four business models, the investable roster, and the outlook — see the 23611 primer.

1. Overview

The North American Industry Classification System (NAICS) — the U.S. government's standard scheme for grouping businesses by activity — uses code 2361 for Residential Building Construction, an industry group (the four-digit level). It covers the general contractors and builders who put up, sell, and renovate American homes. [1]

Here is the one structural fact that defines this page: NAICS 2361 contains exactly one industry — 23611 — so the group and its child are the same thing. Everything true of 23611 is true of 2361; the four-digit code is just a shelf label for the five-digit industry beneath it. Rather than repeat the full analysis, this page gives the group's own ground-truth figures and then hands off to the 23611 primer. [1]

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

An industry group can hold several industries; most do. NAICS 2361 does not — it holds a single industry, 23611 (Residential Building Construction), which in turn splits into four six-digit businesses that share a job site but differ on nearly every axis an investor cares about: [1]

• New single-family, built to order (236115) — a contractor builds a house for a customer, usually on the customer's land.
• New rental multifamily (236116) — apartment buildings built to be leased, not sold unit-by-unit.
• New for-sale housing (236117) — "merchant" or "spec" builders who own the land, carry the home as inventory, and sell the finished house with the lot included. This is where the big public homebuilders live.
• Residential remodelers (236118) — general contractors who renovate, add on to, repair, and rebuild existing homes.

Because nothing else sits at the four-digit level, the group's totals, concentration, economics, and risks are 23611's. The rest of this page reports the group figures and points to the child primer for the detail. [1]

3. How big it is

Our ground-truth federal statistics for NAICS 2361. These figures mix two Census programs and two years — the 2022 Economic Census and 2023 County Business Patterns (CBP) — so they are not a single-year operating snapshot. Because the group has one child, these numbers are identical to 23611's. [2]

The group HHI of 54.3 (against a 10,000 monopoly ceiling) signals near-perfect competition — but that single average hides a wide spread across the four six-digit children, from highly consolidated for-sale builders to remodelers that are among the least concentrated industries in the whole economy. See the 23611 primer for that breakdown. [3]

The undercount caveat — large here. CBP counts only employer establishments. Residential construction is thick with nonemployer businesses — self-employed contractors and one-person remodelers who carry no payroll — which the Census Bureau counts separately in the millions industry-wide. So the true population of firms building and renovating homes is far larger than the ~212,000 employer establishments here, and the receipts total understates total activity, most heavily in the remodeling and custom-single-family segments where small and individual operators dominate. Treat $601.4 billion as "revenue booked by residential building-contractor firms," not "the value of all housing built." [3]

4. The investable universe — where value concentrates

Because 2361 is a single-child group, its investable map is 23611's, and it has one defining feature: all of the tradeable public depth sits in one six-digit child — for-sale builders (236117) — while the other three are reachable only indirectly. In brief (full roster and tickers in the 23611 primer): [3]

• Direct public route: a dozen-plus listed homebuilders (the for-sale/merchant model).
• Indirect public routes: apartment REITs (Real Estate Investment Trusts — companies that own income-producing property and pass most income to shareholders) for rental multifamily; home-improvement retailers and building-products makers for remodeling; and cross-cutting suppliers and homebuilder ETFs (exchange-traded funds) for total construction volume.
• Private routes — where three of the four children actually live: owner-operated custom builders, apartment developers and their capital stack, and small local remodelers plus the private-equity roll-ups now consolidating them.

5. How the money works

One code, four distinct profit models — the reason a single margin benchmark does not describe this level. In brief: custom builders and remodelers earn a fee for building on someone else's dime (low capital intensity, thin margins); for-sale builders earn a gain on selling owned land-and-home inventory (capital-intensive, cyclical); and apartment developers earn a build-to-a-yield spread — the gap between a project's stabilized yield-on-cost and the market cap rate it sells at. What unites all four: thin, cyclical margins, volume as the primary margin lever, and working-capital timing that can sink undercapitalized firms even in profitable years. The mechanics are detailed in the 23611 primer. [3]

6. What drives demand

All four children answer to the same master variables, chiefly mortgage and interest rates — the dominant driver, setting buyer affordability, apartment-developer financing and exit values, and big-remodel affordability alike. Reinforcing structural drivers: the mortgage "lock-in" effect (owners with sub-6% loans won't sell, which freezes resale inventory and pushes buyers toward new homes and stay-put owners toward renovation), a structural housing shortage estimated at roughly 3.7–4.9 million units, an aging housing stock (median U.S. home now over 40 years old, a remodeling tailwind), and demographics and migration. Cutting the other way: elevated construction costs and tariffs. As of mid-2026 the level is rate-gated, with the four children out of phase — see the 23611 primer. [3]

7. Regulation

There is no single federal regulator; the binding rules are state and local — zoning, land use, density and permitting, building and energy codes, contractor licensing, impact fees, and warranty/lien law. Local zoning and entitlement is the single biggest swing factor on whether housing gets built. Federal overlays reach the job site — EPA construction-stormwater permitting, OSHA safety rules, the Fair Housing Act, plus child-specific rules (the EPA lead-paint Renovation, Repair and Painting rule for remodeling; the Low-Income Housing Tax Credit and prevailing-wage rules for multifamily). The 23611 primer lists these in full. [3]

8. Consolidation

The group's low average concentration (HHI 54.3) masks real divergence across the four children: for-sale builders are consolidating fastest (the ten largest captured a record ~44.7% of new single-family closings in 2024), apartment platforms consolidate vertically (development plus construction plus management), remodeling is so fragmented that roll-ups barely dent it and the bigger money is one layer up in building-products distribution, and custom single-family stays stubbornly fragmented. Scale compounds where land, capital, and marketing dominate; it stays elusive where the work is bespoke and locally relationship-driven. Detail in the 23611 primer. [3]

9. Risks

The group's risks are 23611's: cyclicality and rate risk (residential construction is among the most cyclical activities in the economy); cost inflation and tariffs eroding thin margins; a structural skilled-labor shortage; thin, volatile margins where one mispriced job can erase a builder's profit; financing and inventory risk (land exposure for builders, the yield-to-cap-rate spread for developers); roll-up and leverage risk in the private-equity-backed tiers; and measurement risk — federal employer statistics omit a large nonemployer tail, so top-down sizing is approximate. See the 23611 primer for how each risk falls differently across the four children. [2][3]

10. How to invest and the outlook

How to invest. Public-market investors have genuine depth in only one child — for-sale builders — and reach the other three through themes (apartment REITs, home-improvement retail and building-products names, cross-cutting suppliers and ETFs). Value cyclical builders on price-to-book and normalized through-cycle earnings, not a single-year price-to-earnings multiple near a peak. Private-market investors find the direct operating industry in the three "no pure-play" children — custom building, apartment development, and remodeling — where returns come from operating skill, backlog discipline, and cost control. The full playbook, including what to underwrite in private diligence, is in the 23611 primer. [3]

Outlook (mid-2026). The whole level is rate-gated and margin-pressured, with the four children out of phase: for-sale building low-volume and discounting (biggest builders still taking share), rental multifamily mid-correction (absorbing a record supply wave with vacancies near multi-decade highs), custom single-family a relative bright spot, and remodeling the steady anchor. The shared structural case — a multi-million-unit housing shortfall, frozen resale inventory, aging stock, and demographic demand — supports the level through the cycle; the common swing factor is mortgage rates, a decisive decline in which would re-accelerate all four at once. [3]

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Sources

This is a single-child rollup: NAICS 2361 equals its one industry, 23611. Group-level figures come from our ground-truth federal statistics; all synthesis and detail come from the 23611 child primer, which itself aggregates the four six-digit primers (236115/236116/236117/236118) and their federal and industry sources.

1. U.S. Census Bureau. "2022 NAICS Definition — 2361 Residential Building Construction" (industry-group scope; single child industry 23611, which contains 236115/236116/236117/236118). 2022. https://www.census.gov/naics/?input=2361&year=2022
2. Histometrics ground-truth federal statistics — NAICS 2361 (receipts $601.377B and firms 203,762, Economic Census 2022; establishments 212,178, employment 905,357, annual payroll $64.356B, Q1 payroll $15.649B, County Business Patterns 2023; CR4 11.4%, CR8 15.7%, CR20 24.2%, CR50 29.8%, HHI 54.3, Economic Census concentration 2022). Identical to NAICS 23611 (single-child group).
3. Histometrics rollup primer — NAICS 23611, Residential Building Construction (the single child of this group; full synthesis of the four six-digit children — custom single-family, rental multifamily, for-sale builders, and remodelers — including per-child concentration, economics, demand drivers, regulation, consolidation, risks, the investable roster, and the mid-2026 outlook). 2026.