{"license":"https://creativecommons.org/licenses/by/4.0/","dataset":"atlas","mode":"comparison","updatedThrough":"2026-08-15","guardrail":"A bilateral atlas route preserves a sequence of declared edges for navigation and audit. A direct edge, common neighbor, or multi-hop path does not make the endpoints equivalent, establish ownership or control, assign liability, define an antitrust market, make unlike measures comparable, or show causation.","filters":{"layer":"all","layerMatched":true,"left":"industry:2381","leftMatched":true,"right":"source:census-ecnsize-concentration-2022","rightMatched":true,"view":"paths"},"summary":{"nodeCount":5478,"edgeCount":19193,"sourceCount":1,"profileCount":5433,"nodeKindCount":13,"layerCount":4,"directEdgeCount":1,"disconnected":false,"eligibleEdgeCount":19193,"ledgerEdgeCount":19,"leftNeighborCount":10,"pathLimitReached":false,"rightNeighborCount":1872,"sharedNeighborCount":9,"shortestHopCount":1,"shortestPathCount":1},"endpoints":{"left":{"id":"industry:2381","kind":"industry","label":"Foundation, structure, and building exterior contractors","shortLabel":"2381 Foundation, struc...","description":"2022 Economic Census employer-firm concentration screen for NAICS 2381.","href":"/industries/2381","metricLabel":"Revenue HHI","metricValue":"1.9","detail":"102.7K firms / 266.4B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"2381 foundation, structure, and building exterior contractors 23","connectionCount":10},"right":{"id":"source:census-ecnsize-concentration-2022","kind":"source","label":"2022 Economic Census Concentration of Largest Firms","shortLabel":"U.S. Census Bureau","description":"Economy-wide national firm concentration statistics by 2022 NAICS industry including revenue-based HHI and largest-firm concentration ratios.","href":"/sources/census-ecnsize-concentration-2022","metricLabel":"Access date","metricValue":"2026-07-17","detail":"U.S. Census Bureau","status":"public dataset","year":2026,"color":"#64748b","searchText":"census-ecnsize-concentration-2022 2022 economic census concentration of largest firms u.s. census bureau economy-wide national firm concentration statistics by 2022 naics industry including revenue-based hhi and largest-firm concentration ratios. u.s. census bureau, 2022 economic census, ec2200sizeconcen: selected sectors - concentration of largest firms for the united states, released april 2025. public_dataset","connectionCount":1872}},"shortestPaths":[{"id":"path:industry-source:2381:census-ecnsize-concentration-2022","edges":[{"id":"industry-source:2381:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:2381","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 2381.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}],"hopCount":1,"nodes":[{"id":"industry:2381","kind":"industry","label":"Foundation, structure, and building exterior contractors","shortLabel":"2381 Foundation, struc...","description":"2022 Economic Census employer-firm concentration screen for NAICS 2381.","href":"/industries/2381","metricLabel":"Revenue HHI","metricValue":"1.9","detail":"102.7K firms / 266.4B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"2381 foundation, structure, and building exterior contractors 23","connectionCount":10},{"id":"source:census-ecnsize-concentration-2022","kind":"source","label":"2022 Economic Census Concentration of Largest Firms","shortLabel":"U.S. Census Bureau","description":"Economy-wide national firm concentration statistics by 2022 NAICS industry including revenue-based HHI and largest-firm concentration ratios.","href":"/sources/census-ecnsize-concentration-2022","metricLabel":"Access date","metricValue":"2026-07-17","detail":"U.S. Census Bureau","status":"public dataset","year":2026,"color":"#64748b","searchText":"census-ecnsize-concentration-2022 2022 economic census concentration of largest firms u.s. census bureau economy-wide national firm concentration statistics by 2022 naics industry including revenue-based hhi and largest-firm concentration ratios. u.s. census bureau, 2022 economic census, ec2200sizeconcen: selected sectors - concentration of largest firms for the united states, released april 2025. public_dataset","connectionCount":1872}]}],"sharedNeighbors":[{"leftEdges":[{"id":"industry-hierarchy:23813:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23813","to":"industry:2381","label":"NAICS parent classification","detail":"Framing contractors (NAICS 23813) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23813","kind":"industry","label":"Framing contractors","shortLabel":"23813 Framing contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23813.","href":"/industries/23813","metricLabel":"Revenue HHI","metricValue":"20","detail":"13K firms / 29.1B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23813 framing contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23813:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23813","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23813.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:23815:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23815","to":"industry:2381","label":"NAICS parent classification","detail":"Glass and glazing contractors (NAICS 23815) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23815","kind":"industry","label":"Glass and glazing contractors","shortLabel":"23815 Glass and glazin...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23815.","href":"/industries/23815","metricLabel":"Revenue HHI","metricValue":"19.2","detail":"6.6K firms / 18.9B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23815 glass and glazing contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23815:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23815","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23815.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:23814:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23814","to":"industry:2381","label":"NAICS parent classification","detail":"Masonry contractors (NAICS 23814) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23814","kind":"industry","label":"Masonry contractors","shortLabel":"23814 Masonry contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23814.","href":"/industries/23814","metricLabel":"Revenue HHI","metricValue":"9","detail":"18K firms / 28.6B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23814 masonry contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23814:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23814","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23814.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:23819:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23819","to":"industry:2381","label":"NAICS parent classification","detail":"Other foundation, structure, and building exterior contractors (NAICS 23819) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23819","kind":"industry","label":"Other foundation, structure, and building exterior contractors","shortLabel":"23819 Other foundation...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23819.","href":"/industries/23819","metricLabel":"Revenue HHI","metricValue":"27.4","detail":"5.7K firms / 10.6B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23819 other foundation, structure, and building exterior contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23819:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23819","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23819.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:23811:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23811","to":"industry:2381","label":"NAICS parent classification","detail":"Poured concrete foundation and structure contractors (NAICS 23811) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23811","kind":"industry","label":"Poured concrete foundation and structure contractors","shortLabel":"23811 Poured concrete...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23811.","href":"/industries/23811","metricLabel":"Revenue HHI","metricValue":"12.8","detail":"22.9K firms / 78.7B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23811 poured concrete foundation and structure contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23811:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23811","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23811.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:23816:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23816","to":"industry:2381","label":"NAICS parent classification","detail":"Roofing contractors (NAICS 23816) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23816","kind":"industry","label":"Roofing contractors","shortLabel":"23816 Roofing contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23816.","href":"/industries/23816","metricLabel":"Revenue HHI","metricValue":"D","detail":"24.1K firms / 69.9B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"23816 roofing contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23816:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23816","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23816.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:23817:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23817","to":"industry:2381","label":"NAICS parent classification","detail":"Siding contractors (NAICS 23817) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23817","kind":"industry","label":"Siding contractors","shortLabel":"23817 Siding contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23817.","href":"/industries/23817","metricLabel":"Revenue HHI","metricValue":"D","detail":"8.6K firms / 10.8B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"23817 siding contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23817:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23817","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23817.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:2381:238","type":"industry_hierarchy","layer":"measurement","from":"industry:2381","to":"industry:238","label":"NAICS parent classification","detail":"Foundation, structure, and building exterior contractors (NAICS 2381) is classified under Specialty trade contractors (NAICS 238) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:238","kind":"industry","label":"Specialty trade contractors","shortLabel":"238 Specialty trade co...","description":"2022 Economic Census employer-firm concentration screen for NAICS 238.","href":"/industries/238","metricLabel":"Revenue HHI","metricValue":"1.7","detail":"505.6K firms / 1.3T revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"238 specialty trade contractors 23","connectionCount":6},"rightEdges":[{"id":"industry-source:238:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:238","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 238.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]},{"leftEdges":[{"id":"industry-hierarchy:23812:2381","type":"industry_hierarchy","layer":"measurement","from":"industry:23812","to":"industry:2381","label":"NAICS parent classification","detail":"Structural steel and precast concrete contractors (NAICS 23812) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","evidenceLabel":"2022 NAICS hierarchy","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."}],"node":{"id":"industry:23812","kind":"industry","label":"Structural steel and precast concrete contractors","shortLabel":"23812 Structural steel...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23812.","href":"/industries/23812","metricLabel":"Revenue HHI","metricValue":"25.4","detail":"3.9K firms / 19.7B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23812 structural steel and precast concrete contractors 23","connectionCount":3},"rightEdges":[{"id":"industry-source:23812:census-ecnsize-concentration-2022","type":"industry_source","layer":"measurement","from":"industry:23812","to":"source:census-ecnsize-concentration-2022","label":"Economic Census source","detail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23812.","evidenceLabel":"U.S. Census Bureau","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]}],"nodes":[{"id":"industry:2381","kind":"industry","label":"Foundation, structure, and building exterior contractors","shortLabel":"2381 Foundation, struc...","description":"2022 Economic Census employer-firm concentration screen for NAICS 2381.","href":"/industries/2381","metricLabel":"Revenue HHI","metricValue":"1.9","detail":"102.7K firms / 266.4B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"2381 foundation, structure, and building exterior contractors 23","connectionCount":10},{"id":"industry:23813","kind":"industry","label":"Framing contractors","shortLabel":"23813 Framing contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23813.","href":"/industries/23813","metricLabel":"Revenue HHI","metricValue":"20","detail":"13K firms / 29.1B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23813 framing contractors 23","connectionCount":3},{"id":"industry:23815","kind":"industry","label":"Glass and glazing contractors","shortLabel":"23815 Glass and glazin...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23815.","href":"/industries/23815","metricLabel":"Revenue HHI","metricValue":"19.2","detail":"6.6K firms / 18.9B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23815 glass and glazing contractors 23","connectionCount":3},{"id":"industry:23814","kind":"industry","label":"Masonry contractors","shortLabel":"23814 Masonry contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23814.","href":"/industries/23814","metricLabel":"Revenue HHI","metricValue":"9","detail":"18K firms / 28.6B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23814 masonry contractors 23","connectionCount":3},{"id":"industry:23819","kind":"industry","label":"Other foundation, structure, and building exterior contractors","shortLabel":"23819 Other foundation...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23819.","href":"/industries/23819","metricLabel":"Revenue HHI","metricValue":"27.4","detail":"5.7K firms / 10.6B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23819 other foundation, structure, and building exterior contractors 23","connectionCount":3},{"id":"industry:23811","kind":"industry","label":"Poured concrete foundation and structure contractors","shortLabel":"23811 Poured concrete...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23811.","href":"/industries/23811","metricLabel":"Revenue HHI","metricValue":"12.8","detail":"22.9K firms / 78.7B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23811 poured concrete foundation and structure contractors 23","connectionCount":3},{"id":"industry:23816","kind":"industry","label":"Roofing contractors","shortLabel":"23816 Roofing contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23816.","href":"/industries/23816","metricLabel":"Revenue HHI","metricValue":"D","detail":"24.1K firms / 69.9B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"23816 roofing contractors 23","connectionCount":3},{"id":"industry:23817","kind":"industry","label":"Siding contractors","shortLabel":"23817 Siding contractors","description":"2022 Economic Census employer-firm concentration screen for NAICS 23817.","href":"/industries/23817","metricLabel":"Revenue HHI","metricValue":"D","detail":"8.6K firms / 10.8B revenue","status":"disclosure withheld","year":2022,"color":"#f59e0b","searchText":"23817 siding contractors 23","connectionCount":3},{"id":"industry:238","kind":"industry","label":"Specialty trade contractors","shortLabel":"238 Specialty trade co...","description":"2022 Economic Census employer-firm concentration screen for NAICS 238.","href":"/industries/238","metricLabel":"Revenue HHI","metricValue":"1.7","detail":"505.6K firms / 1.3T revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"238 specialty trade contractors 23","connectionCount":6},{"id":"industry:23812","kind":"industry","label":"Structural steel and precast concrete contractors","shortLabel":"23812 Structural steel...","description":"2022 Economic Census employer-firm concentration screen for NAICS 23812.","href":"/industries/23812","metricLabel":"Revenue HHI","metricValue":"25.4","detail":"3.9K firms / 19.7B revenue","status":"published","year":2022,"color":"#f59e0b","searchText":"23812 structural steel and precast concrete contractors 23","connectionCount":3},{"id":"source:census-ecnsize-concentration-2022","kind":"source","label":"2022 Economic Census Concentration of Largest Firms","shortLabel":"U.S. Census Bureau","description":"Economy-wide national firm concentration statistics by 2022 NAICS industry including revenue-based HHI and largest-firm concentration ratios.","href":"/sources/census-ecnsize-concentration-2022","metricLabel":"Access date","metricValue":"2026-07-17","detail":"U.S. Census Bureau","status":"public dataset","year":2026,"color":"#64748b","searchText":"census-ecnsize-concentration-2022 2022 economic census concentration of largest firms u.s. census bureau economy-wide national firm concentration statistics by 2022 naics industry including revenue-based hhi and largest-firm concentration ratios. u.s. census bureau, 2022 economic census, ec2200sizeconcen: selected sectors - concentration of largest firms for the united states, released april 2025. public_dataset","connectionCount":1872}],"rows":[{"id":"industry-hierarchy:2381:238","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:2381","fromKind":"industry","fromLabel":"Foundation, structure, and building exterior contractors","fromHref":"/industries/2381","toId":"industry:238","toKind":"industry","toLabel":"Specialty trade contractors","toHref":"/industries/238","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Foundation, structure, and building exterior contractors (NAICS 2381) is classified under Specialty trade contractors (NAICS 238) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23811:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23811","fromKind":"industry","fromLabel":"Poured concrete foundation and structure contractors","fromHref":"/industries/23811","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Poured concrete foundation and structure contractors (NAICS 23811) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23812:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23812","fromKind":"industry","fromLabel":"Structural steel and precast concrete contractors","fromHref":"/industries/23812","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Structural steel and precast concrete contractors (NAICS 23812) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23813:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23813","fromKind":"industry","fromLabel":"Framing contractors","fromHref":"/industries/23813","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Framing contractors (NAICS 23813) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23814:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23814","fromKind":"industry","fromLabel":"Masonry contractors","fromHref":"/industries/23814","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Masonry contractors (NAICS 23814) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23815:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23815","fromKind":"industry","fromLabel":"Glass and glazing contractors","fromHref":"/industries/23815","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Glass and glazing contractors (NAICS 23815) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23816:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23816","fromKind":"industry","fromLabel":"Roofing contractors","fromHref":"/industries/23816","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Roofing contractors (NAICS 23816) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23817:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23817","fromKind":"industry","fromLabel":"Siding contractors","fromHref":"/industries/23817","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Siding contractors (NAICS 23817) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-hierarchy:23819:2381","layer":"measurement","relationshipType":"industry_hierarchy","relationshipLabel":"NAICS parent classification","fromId":"industry:23819","fromKind":"industry","fromLabel":"Other foundation, structure, and building exterior contractors","fromHref":"/industries/23819","toId":"industry:2381","toKind":"industry","toLabel":"Foundation, structure, and building exterior contractors","toHref":"/industries/2381","evidenceLabel":"2022 NAICS hierarchy","evidenceDetail":"Other foundation, structure, and building exterior contractors (NAICS 23819) is classified under Foundation, structure, and building exterior contractors (NAICS 2381) in the 2022 NAICS hierarchy.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"A NAICS parent-child link records Census classification ancestry; it does not establish product substitutability, a legal antitrust market, or competitive effects."},{"id":"industry-source:238:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:238","fromKind":"industry","fromLabel":"Specialty trade contractors","fromHref":"/industries/238","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 238.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:2381:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:2381","fromKind":"industry","fromLabel":"Foundation, structure, and building exterior contractors","fromHref":"/industries/2381","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 2381.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23811:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23811","fromKind":"industry","fromLabel":"Poured concrete foundation and structure contractors","fromHref":"/industries/23811","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23811.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23812:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23812","fromKind":"industry","fromLabel":"Structural steel and precast concrete contractors","fromHref":"/industries/23812","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23812.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23813:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23813","fromKind":"industry","fromLabel":"Framing contractors","fromHref":"/industries/23813","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23813.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23814:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23814","fromKind":"industry","fromLabel":"Masonry contractors","fromHref":"/industries/23814","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23814.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23815:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23815","fromKind":"industry","fromLabel":"Glass and glazing contractors","fromHref":"/industries/23815","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23815.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23816:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23816","fromKind":"industry","fromLabel":"Roofing contractors","fromHref":"/industries/23816","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23816.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23817:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23817","fromKind":"industry","fromLabel":"Siding contractors","fromHref":"/industries/23817","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23817.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."},{"id":"industry-source:23819:census-ecnsize-concentration-2022","layer":"measurement","relationshipType":"industry_source","relationshipLabel":"Economic Census source","fromId":"industry:23819","fromKind":"industry","fromLabel":"Other foundation, structure, and building exterior contractors","fromHref":"/industries/23819","toId":"source:census-ecnsize-concentration-2022","toKind":"source","toLabel":"2022 Economic Census Concentration of Largest Firms","toHref":"/sources/census-ecnsize-concentration-2022","evidenceLabel":"U.S. Census Bureau","evidenceDetail":"2022 Economic Census Concentration of Largest Firms supplies the 2022 employer-firm concentration screen for NAICS 23819.","sourceId":"census-ecnsize-concentration-2022","sourceUrl":"https://www2.census.gov/programs-surveys/economic-census/data/2022/sector00/EC2200SIZECONCEN.zip","confidenceLevel":"high","indicatorId":null,"entityCode":null,"observationCount":null,"firstYear":null,"latestYear":null,"preferredView":null,"sourceIds":null,"guardrail":"The Census source supports an industry screening row, not a legal antitrust market finding."}]}