Real Estate (NAICS 531) — An Investor's Rollup Primer

NAICS 2022 code 531 — Real Estate. The corner of the economy built around property: businesses that own and rent it out, that broker its sale for a commission, and that run, value, and help transact it for a fee. Written for both public-market investors (real estate investment trusts, listed brokerage and services platforms) and private investors (direct owners, real-estate private equity, family offices, local operators).

This page synthesizes three already-written child primers — 5311 (Lessors of Real Estate), 5312 (Offices of Real Estate Agents and Brokers), and 5313 (Activities Related to Real Estate) — plus our ground-truth federal statistics for the three-digit subsector. Reported federal figures carry a numbered citation; figures labeled "estimate," "judgment," or "outlook" are analytical, not reported data. Acronyms are defined on first use.

(NAICS = North American Industry Classification System, the U.S. government's standard taxonomy for sorting businesses by activity.)

---

1. Overview

NAICS subsector 531, Real Estate, is the whole property economy sorted by what a firm does to the property, not what kind of property it is. It bundles three fundamentally different businesses stapled together by a shared subject — real estate — and separated by three different verbs:

• Own it and lease it (5311). Landlords and REITs (real estate investment trusts — companies that own income property and pay out most of their earnings) that hold apartments, offices, warehouses, storage, and land, and collect rent. This is the asset-owning layer.
• Broker it (5312). Agents and brokers who match buyers to sellers (or renters to landlords) and take a commission on the deal. They own no buildings; they are the transaction layer.
• Service it (5313). Property managers, appraisers, title/escrow firms, and consultants who run, value, and close property for a fee. They also own nothing; they are the fee-for-service layer.

The single most useful thing to understand about 531 is that it is not one market and not even one business model. One layer owns the bricks and lives on rent, balance-sheet value, and cap rates. The other two own almost nothing and live on the volume of rent collected or deals done — thin tolls sitting on top of a multi-trillion-dollar asset base they help operate and move. Because the three are priced, taxed, driven, and disrupted differently, the group average hides more than it reveals. That contrast is where the insight lives, so this primer leads with it.

One connective thread runs through all three: interest rates. But they hit each layer through a different channel — asset value for the owners, transaction volume for the brokers and the transactional services, and barely at all for recurring property management. Knowing which layer you are buying tells you which channel you are exposed to.

---

2. What's inside — the three child industries and how they differ

Subsector 531 contains three 4-digit "industry groups." They are close to equal by revenue but wildly different in economic model, ownership, and how you invest.

How to read this table. The three children are close to a 50 / 27 / 21 split by revenue, but that near-parity is deceptive because they are barely the same kind of company. Lessors (5311) are the biggest by revenue but only a third of the jobs — a capital-heavy, labor-light business where value sits in the buildings, not the payroll. Services (5313) is the mirror image: the smallest by revenue but the largest by employment (45% of the group's workers), because running and valuing buildings is a people business. Brokers (5312) have the most storefronts (40% of establishments) but the fewest workers per firm — a fragmented commission trade dominated by one-agent shops.

The one distinction that governs everything: own vs. fee. 5311 owns the asset and is exposed to its value; 5312 and 5313 earn a slice of the owner's rent or transaction and own nothing. Combined, the two fee layers ($179B + $143B ≈ $322B of employer receipts) look almost as big as the lessor rent line ($350B) — but that comparison is a trap (Section 3): the employer count captures the fee layers fairly well while it massively undercounts the owning layer, most of which is individuals with no payroll. By asset value, the owning layer dwarfs the two fee layers many times over.

A subtlety worth flagging up front: the whole subsector is less concentrated than any of its children. The group HHI (Herfindahl-Hirschman Index, defined in Section 3) is 12.8 — below lessors' 21.9, brokers' 54.3, and services' 40.7. Stacking three already-atomistic trades with different leaders (the biggest landlord is not the biggest broker is not the biggest property manager) dilutes any single firm's share. Combining them makes the group more fragmented, not less — the opposite of what "combine three industries" suggests.

Scope and boundaries. Subsector 531 is real property only. It excludes equipment and vehicle rental (Sector 532 — car, tool, and equipment fleets), lessors of non-financial intangible assets like patents and franchises (Sector 533 — royalty economics), and operating businesses that merely sit on real estate — hotels (721), senior care (623), and farm or timber operations (Sector 11) [1]. One consequence carried across all three children: because 531 is real property and fee services on it, equipment-rental metrics (fleet utilization, residual/resale value) and licensing/royalty economics do not apply. The economics that matter are rent, occupancy, net operating income, cap rates, mortgage leverage, commissions, and service fees.

---

3. How big it is — this level's ground-truth figures

From Histometrics' ingested federal data for NAICS 531 (the whole subsector):

The children reconcile into these totals almost exactly — a useful integrity check. Establishments (136,539 + 163,894 + 114,391 = 414,824), employment (605,793 + 395,264 + 818,574 = 1,819,631), and annual payroll ($38.07B + $31.26B + $56.94B = $126.27B) each sum to the group figure to the dollar [4][5][6]. Receipts ($349.9B + $179.4B + $142.9B) sum to $672.2B, matching the group. Employer firm counts sum to ~344,265 versus the group's 343,078 — a small gap because a firm active in more than one child (a diversified commercial-services company doing both brokerage and management, say) is counted once in each child but de-duplicated at the parent [3][4][5][6].

A capital-and-labor split, not a single profile. Across the subsector, ~1.82 million workers and ~$672 billion of receipts average to roughly 4.4 employees per establishment and ~$0.37 million of receipts per employee [2][3] — but that average is meaningless, because the three children sit at opposite ends. Lessors run on a handful of on-site staff against a huge asset base (~$0.58M receipts per worker); services runs armies of managers, appraisers, and escrow officers against thin per-unit fees (payroll is ~40% of its revenue). Read the children, not the blend.

Concentration (this level) — near the theoretical floor. Among the 343,078 counted employer firms, the largest 4 collect just 4.3% of receipts (the CR4, or four-firm concentration ratio); the top 8, 7.3%; the top 20, 13.7%; the top 50, 21.4%. The Herfindahl-Hirschman Index (HHI — a 0–10,000 gauge where the U.S. Department of Justice treats anything under 1,500 as "unconcentrated") is a near-atomistic 12.8 [3]. Real estate is one of the most fragmented sectors in the entire economy — and, as noted, the subsector is more fragmented than any single child because the leaders differ by activity.

The undercount caveat — read this before trusting any single number

The counted employer group (~415,000 establishments, ~343,000 firms, $672 billion of receipts) is a small slice of the real thing, and it undercounts each child in a different way. Federal business surveys count only employer establishments — reporting locations with payroll — and every child of 531 is dominated by people and entities that never appear:

• Lessors (5311): the dominant owner of rental real estate is the individual, family, or trust with no employees, who reports rent on a personal or pass-through return. The Census Bureau's 2024 Rental Housing Finance Survey counted ~18.97 million rental properties containing 49.72 million units, roughly 70% owned by individuals [7]; by value, roughly 89% of U.S. commercial real estate is privately held and only ~11% sits inside listed REITs [8]; and USDA's 2024 landlord survey alone counts 2.09 million farmland-landlord entities renting land worth $1.66 trillion [9]. The trillions of dollars of underlying property dwarf the $349.9B employer rent line.
• Brokers (5312): the workforce is overwhelmingly not on payroll — in the National Association of Realtors' (NAR) 2025 survey, 87% of members were independent contractors. There were ~1.44 million dues-paying Realtors and ~868,000 no-employee brokerage businesses (earning ~$62 billion) versus the 395,264 payroll employees [10][11].
• Services (5313): property management alone had ~252,900 nonemployer businesses in 2022, and most rental units are run by self-managing landlords who never surface as a "property manager" in any statistic [6][11].

Bottom line on size: the $672 billion is the formal, employer-firm core of the real-estate economy. The true asset base being owned, brokered, and serviced is measured in the tens of trillions of dollars, and the true business count runs to millions of individuals and pass-throughs. Use the federal figures for the professionally-run core; use the housing-stock, CRE-universe, USDA land, and NAR/nonemployer surveys for the true scale — and never mix the two in one sentence. Any claim about "the size of the real-estate industry" should say which one it means.

---

4. The investable universe — where value concentrates

Value is not spread evenly, and — critically — it concentrates in a different place in each child. There is a rich public menu in the owning layer, a narrow and cyclical one in brokerage, and almost no pure-play in services (where the value has migrated to adjacent platforms). A REIT (real estate investment trust) owns income-producing real estate, pays little or no corporate tax, and passes most of its income to shareholders as dividends; roughly 190–195 REITs hold ~$1.4–1.6 trillion of listed equity, and an estimated 170 million Americans own them through funds and retirement plans [12].

Lessors (5311) — the deepest public menu; buy the owner. Exposure is by property type:

• Residential — apartment REITs AvalonBay (AVB), Equity Residential (EQR), Mid-America (MAA); single-family-rental REITs Invitation Homes (INVH), American Homes 4 Rent (AMH).
• Nonresidential — industrial/logistics Prologis (PLD, the largest U.S. equity REIT of any kind); retail Simon Property Group (SPG), Realty Income (O); office BXP.
• Self-storage — Public Storage (PSA), Extra Space (EXR), CubeSmart (CUBE).
• Land — farmland Gladstone Land (LAND), Farmland Partners (FPI); timber Weyerhaeuser (WY), Rayonier (RYN); ground-lease Safehold (SAFE); manufactured-home Equity LifeStyle (ELS), Sun Communities (SUI) [4][12].

The private and institutional base holds most of the dollars here: Blackstone (world's largest commercial-property owner, ~$319B of real-estate assets under management), Brookfield, PGIM Real Estate, Nuveen, and Greystar (No. 1 U.S. apartment owner/manager), atop a long tail of ~15 million individually owned rental properties [4][7].

Brokers (5312) — a narrow, cyclical set; buy the transaction, not a rent roll. Three buckets: owned brokerages — Compass (COMP, ~$7.0B revenue; it acquired Anywhere — Coldwell Banker/Century 21/Sotheby's/Corcoran — in January 2026), eXp World Holdings (EXPI), The Real Brokerage (REAX), Douglas Elliman (DOUG); the franchisor RE/MAX (RMAX, capital-light dues and royalty-like fees); mortgage-plus-brokerage Rocket Companies (RKT, which bought Redfin in July 2025); and the diversified commercial-services giants CBRE Group (CBRE, ~$40.6B revenue), JLL (JLL), Newmark (NMRK), Cushman & Wakefield (CWK), and transaction specialist Marcus & Millichap (MMI). Private networks Keller Williams and Berkshire Hathaway's HomeServices of America are among the largest with no traded equity [5][13].

Services (5313) — almost no pure-play; the value hides next door. The five global CRE-services platforms — CBRE, JLL, Cushman, Newmark, and Colliers (CIGI) — are the closest thing to a listed property-management play, though each bundles management with brokerage and valuation. The residential management giants are private (Greystar runs ~947,000 U.S. apartments), so public exposure runs through the fee/software layer — FirstService (FSV), AppFolio (APPF) — or the owner-REITs themselves. In appraisal there is no listed pure-play; value migrated to platforms — Real Matters (REAL), Intercontinental Exchange (ICE), and private Cotality (ex-CoreLogic). In escrow/title the value sits in the title-insurance oligopoly — First American (FAF), Fidelity National Financial (FNF), Old Republic (ORI), Stewart (STC) — where four families write ~80% of ~$18.5B in U.S. title premiums [6][14][15].

Note the overlap. CBRE, JLL, Cushman, Newmark, and Colliers appear in both the brokerage (5312) and services (5313) menus — they are vertically integrated commercial-services firms that straddle the codes, capturing brokerage, management, valuation, and project fees on the same client. That straddle is itself a strategy (Section 8).

---

5. How the money works — three different engines

Unlike a leaf industry, 531's children do not share one engine. They share one customer — the real-estate owner — but earn from that customer in three different ways.

5311 — Rent → NOI → cap rate → value, amplified by leverage. This is the owner's math:

• Net operating income (NOI) = rent (times occupancy, plus expense recoveries) minus property-level operating costs, before interest, overhead, depreciation, and capital spending [16].
• Value ≈ NOI ÷ capitalization rate (cap rate) — the market's required unleveraged yield, which moves inversely to price. $1,000,000 of NOI is worth $20.0M at a 5% cap rate but only ~$16.7M at 6% — a ~17% value loss with no change in operations [17]. Because cap rates track interest rates, higher rates cut property values even when rent never misses. This is the single channel through which rates dominate the owning layer.
• Leverage. Mortgage debt is typically 40–70% of value, so value swings hit the owner's equity harder.
• The REIT wrapper. A REIT must distribute ≥90% of taxable income and meet asset/income tests; in exchange it pays little or no corporate tax. REITs are valued on FFO (funds from operations — net income with real-estate depreciation added back), AFFO (adjusted FFO — FFO minus recurring maintenance capital), dividend yield, and price-to-NAV (net asset value — appraised assets minus debt) — not price-to-earnings [16][18].

5312 — Sides × price × commission rate × retained split. A brokerage's revenue is: transaction sides (one represented party) × property value × commission rate × the firm's retained share after paying the agent. Every term is cyclical or under pressure: sides swing with housing turnover; the rate faces structural compression (Section 7); and the retained share has been competed down by agent-friendly models that hand agents almost the whole commission and monetize on fees, revenue-share, and equity — which is why a platform can post billions of revenue yet keep very little (one cloud brokerage ran a ~7% gross margin after agent costs) [5]. Brokers own no rent roll, so cap-rate expansion hits them only indirectly, by depressing prices and volume. Value these as cyclical operating companies — EV/EBITDA, gross profit, transaction volume — never as REITs.

5313 — A fee, never a rent: one stock business plus two flow businesses.

• Property management (~76% of the child) — a percentage of rent, recurring. ~8–12% of rent on single homes, ~3–6% (or a flat per-unit fee) at scale; commercial base fees 3–6% plus leasing and project add-ons. This is a stock fee — it recurs every month a building is under management, which makes it the most rate-insulated revenue in all of 531 [6]. Accounting trap: big commercial "integrated facilities management" contracts book reimbursed on-site labor as revenue at no margin — use net/fee revenue, never gross.
• Appraisal and title/escrow (~24%) — a fee per report or per closed file, cyclical. Nearly a derivative of transaction and mortgage-origination volume; high fixed costs give sharp operating leverage — margins collapse in busts and rebound fast in recoveries. Value these as cyclical financials/fintech — net fee revenue, margins, retention — never as REITs [6].

The one cross-wiring error to avoid. The owners you reach in 5311 (and the owners the 5313 firms serve) are C-corporations' opposite — valued on FFO/AFFO/NAV/yield. The service and brokerage firms inside 5312 and 5313 are ordinary C-corporations valued on EV/EBITDA and fee growth. Crossing those wires — pricing a broker like a REIT, or a REIT on price-to-earnings — is the most common generalist mistake in this space [6][18].

---

6. Demand drivers

Demand across 531 is derived — it comes from whoever ultimately owns, uses, or trades the property — so the drivers split cleanly by layer.

• Lessors (5311) ride the use of space: household formation and demographics (a large renter cohort; ~46 million renter households); the rent-vs-own trade-off (a ~6.5% mortgage rate keeps marginal households renting); jobs, income, and migration to the Sun Belt; e-commerce demand for warehouses; and near-term new supply by property type [4].
• Brokers (5312) ride the volume of deals: mortgage rates and affordability (the dominant swing factor); the "lock-in" effect (owners holding 3% pandemic-era mortgages won't sell into a 6.5% market — the Federal Reserve estimated lock-in explained ~44% of the 2021–22 drop in mobility); and home prices (higher prices lift commission dollars per deal even when unit volume is weak). Existing-home sales fell from 6.12 million (2021) to ~4.06 million in 2024–25 — the weakest since the mid-1990s — before edging up in 2026 [5].
• Services (5313) split by stock vs. flow: property management rides the institutionalization of ownership and a long self-management conversion runway (only ~22% of small rentals use a professional manager, versus ~84% of large properties); appraisal and title/escrow ride the same transaction and financing volume that drives brokerage — plus a structural headwind as automated valuation and appraisal waivers shrink the appraisal pool [6].

The cross-cutting driver for all three is interest rates, which set both financing cost and the discount rate on future rents and prices — but, again, they transmit through asset value for owners, deal volume for brokers and transactional services, and barely at all for recurring management. Population, migration, employment, and construction costs move all three as well, through different customers.

---

7. Regulation

The regulatory load differs by layer, but a few backbones are shared.

• Shared. The REIT tax regime (Internal Revenue Code §§856–860 — the 90%-distribution rule plus asset/income tests) governs the listed owners, with SEC (Securities and Exchange Commission) disclosure of non-GAAP measures like FFO/AFFO. §1031 like-kind exchanges let private owners defer capital-gains tax by rolling into replacement property. The federal Fair Housing Act bars discrimination across owning, brokering, and managing. And a live antitrust front on algorithmic pricing (the DOJ's RealPage case) reaches both landlords (5311) and property managers (5313, including Greystar) at once [4][6][19].
• Lessors (5311) carry the heaviest tenant-facing load: rent regulation (the biggest policy risk to apartment NOI in covered markets, though ~30 states preempt local rent control), habitability and eviction rules, building-energy mandates, and foreign-farmland-ownership restrictions on land [4].
• Brokers (5312) are defined by the NAR antitrust settlement — after the Sitzer/Burnett verdict, NAR agreed in 2024 to pay $418 million and change its rules so buyer-agent compensation can no longer be posted on the multiple listing service and buyers must sign a written representation agreement before touring. It pressures commissions toward compression but did not abolish them. Plus state licensing, RESPA (Real Estate Settlement Procedures Act) anti-kickback rules, and independent-contractor classification [5].
• Services (5313) sit inside federally regulated lending and insurance: FIRREA Title XI and USPAP (appraisal conduct), the new interagency AVM quality-control rule (automated-valuation models, effective October 2025), state-filed title-insurance rates, and RESPA Section 8. A cross-cutting quirk: REIT tax rules actively create demand for 5313 — a REIT that performs "non-customary" tenant services itself can jeopardize its status, so it routes active management and valuation to independent firms in this group [6].

---

8. Consolidation

The subsector is structurally fragmented and only slowly consolidating — the group HHI of 12.8 is the proof — but capital and capability concentrate even where ownership does not, and the pattern differs by child:

• Lessors (5311) are slowly institutionalizing at the margin: single-family rental was created as an institutional asset class out of the post-2008 foreclosure wave; self-storage is a textbook roll-up (Public Storage agreed to buy National Storage Affiliates for ~$10.5B in 2026); and apartment mega-mergers keep reshaping the small public universe (AvalonBay and Equity Residential announced an all-stock merger of equals in 2026). Even so, the eight largest public apartment landlords own only ~1.2% of all U.S. rental units [4].
• Brokers (5312) stay fragmented because barriers to entry are trivial (a license and a laptop) and client relationships follow the mobile agent — but the top is consolidating and vertically integrating: Compass–Anywhere (2026) and Rocket–Redfin (2025) fused brand, portal traffic, mortgage, and data [5].
• Services (5313) consolidates at the platform layer, not the local firm: the CRE giants (CBRE, JLL, Cushman) were built by acquisition to bundle brokerage + valuation + management + project work; appraisal management companies and data/AVM platforms are rolling up above the atomized appraisers; and title underwriting is a four-family oligopoly [6].

Two cross-group themes. First, vertical integration across the codes is the winning move at the top — the same commercial-services platforms straddle brokerage (5312) and management/valuation (5313), while Greystar and the REITs straddle owning (5311) and self-management (5313). Second, because public shares reprice continuously while private appraisals lag, REIT discounts to NAV can precede private-market markdowns — a recurring public-vs-private arbitrage and the classic take-private trigger in the owning layer.

---

9. Risks

The risks rhyme because the underlying asset is the same, but they transmit differently by layer.

1. Interest-rate risk — the master risk for the whole subsector, through three different channels. For owners (5311), higher required yields cut asset values even when NOI is flat, magnified by leverage. For brokers (5312), higher rates cut transaction count — with no owned-asset cushion and no recurring rent to smooth the cycle. For transactional services (5313), the same volume hit lands on appraisal and title fees, while recurring property management is largely insulated [4][5][6][17].
2. Refinancing / maturity risk. Roughly $5 trillion of commercial/multifamily mortgage debt must be refinanced on a rolling basis — loans made at 3–4% on higher values re-pricing at higher rates on lower values, with a large slice due in 2026–27. The distress is concentrated in office, which the Federal Reserve has repeatedly flagged as a financial-stability vulnerability [4][6].
3. Cyclicality of transaction volume. The fee layers boom and bust with the number of deals; net losses are common in brokerage even at multibillion-dollar revenue.
4. Secular take-rate pressure on the fee layers. Commission compression (the NAR settlement, discount models) squeezes brokers; automation and appraisal waivers structurally shrink the appraisal pool; title waivers threaten escrow.
5. Oversupply / lease-up risk — a local risk heaviest recently in Sun Belt apartments and self-storage; and expense inflation (property taxes, insurance) outrunning rents.
6. Regulation and litigation — rent caps, energy mandates, the RealPage/FTC crackdown on algorithmic pricing, and independent-contractor reclassification.
7. Illiquidity and appraisal lag in private real estate, against public REIT shares that can swing far from underlying value the other way.

One risk this whole subsector largely avoids: the residual/resale-value risk that plagues equipment and vehicle lessors. 531 owns and services land and buildings, not a depreciating fleet — so fleet-utilization and used-asset-price economics do not apply (the one partial exception is a truck fleet bolted onto one storage operator).

---

10. How to invest, and the outlook

The rollup hands investors three distinct menus, and choosing among them is really choosing which economic exposure you want — asset value, transaction volume, or a recurring toll.

Public routes:

• The owning layer (5311) — buy REITs by property type. Apartments (AVB, EQR, MAA, INVH), industrial (PLD, REXR), retail (SPG, O), office (BXP), storage (PSA, EXR, CUBE), land/timber/ground-lease/manufactured-home (LAND, FPI, WY, RYN, SAFE, ELS, SUI) — or a diversified REIT exchange-traded fund (ETF). Value on dividend yield (~3–7% across these), price/FFO, price/AFFO, same-store NOI growth, and price-to-NAV; a wide NAV discount is the classic entry signal. Income-heavy, rate-levered, liquid, transparent — and reprices fast with rates.
• The transaction layer (5312) — buy cyclical operating companies. Owned brokerages (COMP, EXPI, REAX), the franchisor (RMAX), mortgage-plus (RKT), commercial services (CBRE, JLL, NMRK, CWK, MMI). Value on EV/EBITDA, price-to-gross-profit, free cash flow, and transaction sides — never FFO or yield. A high-beta play on U.S. housing and CRE turnover with a secular take-rate headwind.
• The service layer (5313) — buy the fee firms and the rails. The recurring managers (CBRE, JLL, CIGI, plus fee/software FSV, APPF) as asset-light C-corps valued on net fee-revenue growth and retention; the cyclical flow via title insurers (FAF, FNF) and valuation platforms (REAL, ICE). The most defensive way to be long real estate without carrying its assets.

Private routes. Own the property (a rental, a strip center, a storage facility, a parcel of farmland) for control and the tax benefits of depreciation and §1031 — at the cost of illiquidity and hands-on work. Own the fee business — a local brokerage, franchise, management, appraisal, or title-agency firm — a low-capital, cash-generative business underwritten on durable gross profit and contract/referral retention, not door count or reimbursement-inflated gross revenue. Or go between the two via real-estate private equity, non-traded REITs, syndications, and Delaware Statutory Trusts (DSTs) for 1031 exchanges. For any owned deal, insist on the going-in cap rate, debt maturity and structure, lease-expiration schedule, market-vs-contract rent, and what value survives a major vacancy.

Outlook (analytical judgment, not a forecast). The three layers are on different clocks but share one swing factor — interest rates:

• Owning (5311): modest, uneven growth as supply waves peak; sector and quality selection matter far more than the "real estate" label — retail is best-balanced, industrial digests its boom, office is a multi-year bifurcated grind, storage bottoms, land re-rates only when rates ease.
• Broking (5312): a gradual recovery, not a clean rebound — needs rates to ease and the lock-in effect to thaw — with commissions grinding lower and consolidation continuing.
• Servicing (5313): the recurring property-management stock looks structurally durable and slowly consolidating; the transactional flow (appraisal, title) normalizes off 2025 lows but with a secular automation decline layered on appraisal.

The honest bottom line is the one the subsector average obscures: 531 is not a single bet on "real estate." It is a choice between owning the asset (rate risk through value, on leverage), brokering the deal (rate risk through volume, no cushion), and servicing the asset for a fee (a thinner, more defensive toll). The bull case common to all three is rates easing without a recession; the bear case is a rate spike or recession. Which layer — and which property type, at what price and leverage — matters far more than the label.

For the full, company-by-company detail, read the three child primers: [5311] Lessors of Real Estate (owning), [5312] Offices of Real Estate Agents and Brokers (broking), and [5313] Activities Related to Real Estate (servicing) — each with its complete investable-universe table, economics, and risk list.

---

Sources

1. U.S. Census Bureau, 2022 NAICS Definitions — Subsector 531 and industry groups 5311, 5312, 5313 (hierarchy, activity definitions, exclusions of Sectors 532/533/721/623/11). https://www.census.gov/naics/?year=2022
2. U.S. Census Bureau, County Business Patterns 2023 — NAICS 531 (establishments 414,824; employees 1,819,631; annual payroll $126.275B; Q1 payroll $32.684B). [Histometrics ingested federal statistic.] https://data.census.gov/table/CBP2023.CB2300CBP
3. U.S. Census Bureau, 2022 Economic Census — NAICS 531, concentration statistics (receipts $672.216B; 343,078 firms; CR4 4.3%, CR8 7.3%, CR20 13.7%, CR50 21.4%; HHI 12.8). [Histometrics ingested federal statistic.] https://data.census.gov/table/ECNBASIC2022.EC2253BASIC
4. Child primer 5311 — Lessors of Real Estate (CBP 2023: 136,539 establishments, 605,793 employees, $38.07B payroll; EC 2022: 104,669 firms, $349.9B receipts, CR4 5.4%, HHI 21.9); apartment/storage/land REIT and private-owner detail. [Synthesized from the child primer and its cited sources.]
5. Child primer 5312 — Offices of Real Estate Agents and Brokers (CBP 2023: 163,894 establishments, 395,264 employees, $31.26B payroll; EC 2022: 150,558 firms, $179.4B receipts, CR4 11.8%, HHI 54.3); brokerage/franchise/commercial-platform detail. [Synthesized from the child primer and its cited sources.]
6. Child primer 5313 — Activities Related to Real Estate (CBP 2023: 114,391 establishments, 818,574 employees, $56.94B payroll; EC 2022: 89,038 firms, $142.9B receipts, CR4 10.6%, HHI 40.7); property-management / appraisal / title-services detail. [Synthesized from the child primer and its cited sources.]
7. U.S. Census Bureau, 2024 Rental Housing Finance Survey (18.965M rental properties, 49.722M units; ~70% individual-owned). https://www.census.gov/programs-surveys/rhfs.html
8. Clarion Partners / Nareit, Estimating the Size of the Commercial Real Estate Market (≈89% private / ≈11% listed, Q4 2024). https://www.reit.com/news/blog/market-commentary/estimating-size-commercial-real-estate-market
9. USDA National Agricultural Statistics Service, 2024 Tenure, Ownership, and Transition of Agricultural Land (TOTAL) Survey (2.09M landlord entities; 347.8M rented acres; $1.66T assets; $34.1B rent, 2024). https://www.nass.usda.gov/Publications/Highlights/2026/TOTAL24.pdf
10. National Association of Realtors, 2025 Member Profile (87% independent contractors; ~1.44M members) and Settlement Agreement and FAQs ($418M; Aug 17, 2024 practice changes). https://www.nar.realtor/the-facts/nar-settlement-faqs
11. U.S. Census Bureau, Nonemployer Statistics 2022 (NAICS 53121 brokers ~868,000 businesses / ~$62B receipts; NAICS 53131 property managers ~252,900 businesses / ~$18.4B receipts). https://www.census.gov/programs-surveys/nonemployer-statistics/data/datasets.html
12. Nareit / EY, Economic Contribution of REITs in the U.S. and REIT Industry Fact Sheet (~190–195 REITs; ~$1.4–1.6T listed equity; ~170M Americans own REITs). https://www.reit.com/data-research
13. SEC EDGAR, 2025 Forms 10-K — Compass, eXp World Holdings, The Real Brokerage, RE/MAX Holdings, Douglas Elliman, Rocket Companies, CBRE Group, JLL, Newmark, Cushman & Wakefield, Marcus & Millichap; Keller Williams and HomeServices of America network data. https://www.sec.gov/cgi-bin/browse-edgar
14. SEC EDGAR, 2025 Forms 10-K — CBRE, JLL, Cushman & Wakefield, Newmark, Colliers, FirstService, AppFolio, Real Matters, Intercontinental Exchange, CoStar; Multifamily Executive / NMHC 2025 Top 50 Managers (Greystar ~947,000 U.S. apartments). https://www.sec.gov/cgi-bin/browse-edgar
15. American Land Title Association, 2025 Market Share & Premium Volume (~$18.5B premiums; four families ~80%); SEC 10-Ks for First American, Fidelity National Financial, Old Republic, Stewart. https://www.alta.org/
16. Nareit glossary, Net Operating Income, Capitalization Rate, Funds From Operations, Adjusted FFO, NAV; SEC non-GAAP FFO guidance. https://www.reit.com/glossary
17. Federal Reserve Board, Financial Stability Report (cap-rate / interest-rate sensitivity; ~$5T CRE/multifamily mortgage debt and 2026–27 maturities); CBRE, U.S. Cap Rate Survey, H2 2025. https://www.federalreserve.gov/publications/financial-stability-report.htm
18. U.S. Internal Revenue Service, Instructions for Form 1120-REIT (90% distribution requirement; 75% asset and income tests); Internal Revenue Code §§856–860. https://www.irs.gov/instructions/i1120rei
19. U.S. Department of Housing and Urban Development, Fair Housing Act Overview; U.S. Department of Justice, U.S. v. RealPage, Inc. (algorithmic-pricing antitrust litigation reaching landlords and managers). https://www.hud.gov/helping-americans/fair-housing-act-overview

---

Data-vintage notes: Section 3 group figures are Histometrics' ingested federal data for NAICS 531 — County Business Patterns 2023 (establishments, employment, payroll) and the 2022 Economic Census (firm count, receipts, concentration ratios and HHI) [2][3]. Child-level federal figures [4]–[6] are the corresponding ingested statistics for 5311/5312/5313 and reconcile into the group totals: establishments, employment, and annual payroll sum exactly; receipts sum to $672.2B; employer firm counts sum to ~344,265 versus the group's 343,078, the small gap reflecting firms active in more than one child and de-duplicated at the parent. Asset-stock, company, market, and regulatory context are drawn from the three child primers and their cited USDA, SEC, Nareit, Clarion, NAR, ALTA, HUD, DOJ, IRS, and Federal Reserve sources. Federal business surveys count employer firms only and materially understate this subsector — most rental real estate is owned by individuals, most brokers are self-employed, and most small rentals are self-managed — so asset-base and total-activity claims lean on the housing-stock, CRE-universe, USDA land, NAR, and nonemployer surveys, not the ~415,000 counted establishments. Reported facts carry citations; forward-looking statements are labeled analytical judgments, not forecasts.