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PHYSICAL SERVICES

Commercial Cleaning

Leader: ABM Industries — 5.0% S1 · 6.1% CR3

S1
5.0%
leader
CR3
6.1%
top 3 combined
HHI
27
Unconcentrated
MARKET SIZE
$90B
US

How this is calculated

FORMULA
S1 = ABM Industries revenue / total revenue = 5.0%
CR3 = ABM Industries + Marsden + ISS = 6.1%
HHI = Σ(share²) = 27 (Unconcentrated (HHI < 1,500))
DENOMINATOR
Revenue — $90B (US)
US commercial janitorial + facilities cleaning revenue.
Size from: IBISWorld NAICS 56172
TOP 3 PLAYERS
#1ABM Industries5.0%
#2Marsdenn/d
#3ISS1.1%
— Individual #2/#3 shares not separately tracked at this granularity (only CR3 disclosed). See submit a correction if you have a source for them.
METHODOLOGY NOTE
ABM Industries Janitorial segment ~$4.5B (10-K) and ISS US ~$1.0B (2024 Annual Report; ~5,700 US employees, 440 client sites) divided by $90B US commercial cleaning market (IBISWorld NAICS 56172). Marsden Services is private and last disclosed $500M (2023, company website) — not updated for FY24, kept as n/d. CR3 here reflects ABM + ISS only; if Marsden's stale $500M were included CR3 would be ~6.7%. Extreme fragmentation.
SOURCES
Year: 2025
Geo: US
Firms: 100,000+
NAICS: 56172

Historical S1 / CR3 trajectory

1990S1: 3%CR3: 5%ABM early regional scale
2000S1: 4%CR3: 6%Contract growth
2010S1: 4.5%CR3: 6.8%Post-GFC contract renewal
2020S1: 5%CR3: 7.5%COVID disinfection surge
2025S1: 5%CR3: 6.1%Stable fragmentation; Marsden private, kept n/d

Labor economics

REV / EMPLOYEE (leader)
$0.1M
industry avg $0.1M
SG&A % (leader)
8%
of revenue

ABM Industries FY2024 SG&A 8.3% on $8.4B; primarily contract labor — AI compresses scheduling only

See full Labor & AI analysis →

Related markets

HVAC Contractors
EMCOR Group
3.5%
CR3 6.3%
Roofing
Tecta America
2.6%
CR3 4.9%
Plumbing
Roto-Rooter
1.5%
CR3 2.8%
Electrical
Quanta Services
4.9%
CR3 8.4%
Pest Control
Rentokil (Terminix)
20.0%
CR3 38.0%

Source Quality Hierarchy

Every market has a primary source plus 1–3 validation sources. Revenue numerators come from SEC 10-K filings; denominators validated against the Economic Census where available.

TIER 1Authoritative anchorsGovernment data + SEC filings
US Economic Census (data.census.gov) · SEC EDGAR / Company 10-Ks · BEA Industry Value-Added (FRED) · BLS QCEW · USGS Mineral Commodity Summaries · EIA Refinery Capacity Report · FDA device listings
TIER 2Leading commercial trackersIndustry-standard paid trackers
IDC Semiannual Software Tracker · Gartner Market Share & Magic Quadrant · IBISWorld NAICS reports · StatCounter Global Stats · eMarketer / Insider Intelligence · Synergy Research Group
TIER 3Category specialistsBest-in-class niche authorities
SIPRI (aerospace & defense) · IQVIA (pharma) · TrendForce (semiconductors) · CIMdata (CAD/PLM) · Nilson Report (payments) · Am Law 100 (legal) · ENR Top 500 (A&E) · AM Best (insurance) · SIA (staffing) · Ad Age (agencies) · Barron's / Cerulli (wealth) · Evaluate MedTech · Nielsen Gauge (streaming) · Gridwise (ride-hail) · Bloomberg Second Measure (delivery) · RC Top 100 (roofing) · SDM Top 100 (fire/safety) · Big 4 annual reports · ALM Intelligence (consulting)

Data vintage: Q2 2025 research compilation. Labels updated 2026-Q2. Tier 1 sources refreshed from FY2025 SEC filings where available. For full methodology see the Methodology page.