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COGNITIVE SERVICES
Architecture & Engineering
Leader: Jacobs — 2.5% S1 · 6.6% CR3
S1
leader
CR3
top 3 combined
HHI
Unconcentrated
MARKET SIZE
US
How this is calculated
FORMULA
S1 = Jacobs revenue / total revenue = 2.5%
CR3 = Jacobs + AECOM + WSP = 6.6%
HHI = Σ(share²) = 40 (Unconcentrated (HHI < 1,500))
DENOMINATOR
Revenue — $400B (US)
Total US architecture + engineering services revenue.
Size from: Census NAICS 5413 + ENR Top 500
TOP 3 PLAYERS
#1Jacobs2.5%
#2AECOM2.2%
#3WSP1.9%
METHODOLOGY NOTE
Jacobs / AECOM / WSP revenues per ENR Top 500 Design Firms divided by total US A&E firm revenue (NAICS 5413). Reordered May 2026 — 2026 ENR has Jacobs at #1 and AECOM at #2 (was inverted in prior data). Deeply fragmented market — top 3 hold ~7% combined, the rest is specialty shops. Validated against 10-K filings and Census NAICS 5413 market size.
Year: 2025
Geo: US
Firms: 100,000+
NAICS: 5413
Labor economics
REV / EMPLOYEE (leader)
$0.2M
industry avg $0.2M
SG&A % (leader)
1%
of revenue
AECOM FY2025 reported G&A only 1.0% — rolls labor + project overhead into Cost of Revenue (project costing); peers Jacobs 17.5%, WSP 7.2%
Related markets
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.