Top 100 Contractors in NAICS 236: Construction of Buildings, FY2023

Name: Top 100 Contractors in NAICS 236: Construction of Buildings, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 18% of FY2023 NAICS 236 contract dollars

Contract obligations: $34,767,670,213 Net of deobligations, by contracts coded NAICS 236 or a code under it
Contractors: 3,577 Parent companies with an obligation
Largest contractor: Weston Solutions Holdings, Inc. $1.05 billion, 3.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Weston Solutions Holdings, Inc. Through Weston Solutions Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,052,190,361	3.0%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2024 and not on the FY2025 list; up 195 since FY2022.
2	Brasfield & Gorrie LLC Top agencies DOJ (Department of Justice) GSA (General Services Administration) DHS (Department of Homeland Security)	$679,486,679	1.9%	Rank history: #19 in FY2021, #26 in FY2022, #5 in FY2024 and #9 in FY2025; up 24 since FY2022.
3	The Whiting-Turner Contracting Company Top agencies Navy (Department of the Navy) Commerce (Department of Commerce) DHS (Department of Homeland Security)	$674,087,639	1.9%	Rank history: #4 in FY2021, #6 in FY2022, #6 in FY2024 and #5 in FY2025; up 3 since FY2022.
4	Walsh Federal LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$673,870,035	1.9%	Rank history: #29 in FY2021, #14 in FY2022, #19 in FY2024 and #12 in FY2025; up 10 since FY2022.
5	Barnard Spencer Joint Venture Top agencies DHS (Department of Homeland Security)	$628,001,744	1.8%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #3 in FY2025; new.
6	Clark Construction Group LLC 2 awardees, including Atkinson / Clark, A Joint Venture Top agencies DOJ (Department of Justice) Navy (Department of the Navy) Smithsonian (Smithsonian Institution)	$608,573,934	1.7%	Rank history: #17 in FY2021, #21 in FY2022, #1 in FY2024 and #8 in FY2025; up 15 since FY2022.
7	Slsco, Ltd. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$529,894,847	1.5%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #36 in FY2025; up 144 since FY2022.
8	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies Army (Department of the Army) DOS (Department of State) Navy (Department of the Navy)	$496,898,419	1.4%	Rank history: #5 in FY2021, #3 in FY2022, #4 in FY2024 and not on the FY2025 list; down 5 since FY2022.
9	Gilbane Federal 2 awardees, including Gilbane Japan GK Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$484,843,313	1.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
10	Hensel Phelps Construction Co 8 awardees, including Hensel Phelps - Shimizu JV Top agencies Army (Department of the Army) Navy (Department of the Navy) GSA (General Services Administration)	$473,309,658	1.3%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2024 and #7 in FY2025; down 9 since FY2022.
11	ACS Actividades DE Construccion Y Servicios SA 2 awardees, including Turner Construction Company and Dragados Sociedad Anonima Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$470,496,730	1.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
12	RQ Construction, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$458,665,846	1.3%	Rank history: #7 in FY2021, #5 in FY2022, #13 in FY2024 and #6 in FY2025; down 7 since FY2022.
13	Structsure Projects Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army) DOT (Department of Transportation)	$408,355,147	1.1%	Rank history: not on the FY2021 list, #36 in FY2022, #64 in FY2024 and #23 in FY2025; up 23 since FY2022.
14	The Walsh Group 5 awardees, including Walsh Construction Company II, LLC, Archer Western Federal JV and Walsh Construction Company Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) Navy (Department of the Navy)	$395,431,682	1.1%	Rank history: #6 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; up 34 since FY2022.
15	Grunley Construction Co., Inc. Top agencies Army (Department of the Army) Smithsonian (Smithsonian Institution) DOS (Department of State)	$362,115,054	1.0%	Rank history: #22 in FY2021, #7 in FY2022, #21 in FY2024 and #32 in FY2025; down 8 since FY2022.
16	Aici-Archirodon JV LLC Top agencies Army (Department of the Army)	$348,575,214	1.0%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2024 and not on the FY2025 list; new.
17	Balfour Beatty LLC 2 awardees, including Balfour Beatty Construction, LLC Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$347,445,168	1.0%	Rank history: #62 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
18	Nan Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$346,154,719	1.0%	Rank history: not on the FY2021 list, #19 in FY2022, #44 in FY2024 and #13 in FY2025; up 1 since FY2022.
19	JX Holdings Inc. 2 awardees, including Nippo Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$315,305,053	0.9%	Rank history: #35 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
20	Bechtel Corp Through Bechtel National, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$308,679,002	0.9%	Rank history: #50 in FY2021, not on the FY2022 list, #16 in FY2024 and #14 in FY2025; up 118 since FY2022.
21	Fisher Sand & Gravel Co 2 awardees Top agencies DHS (Department of Homeland Security)	$282,563,566	0.8%	Rank history: not on the FY2021 list, #84 in FY2022 and not on the FY2024–FY2025 lists; up 63 since FY2022.
22	Consigli Holdings Inc. Through Consigli Construction Co., Inc. Top agencies GSA (General Services Administration) Army (Department of the Army) DOI (Department of the Interior)	$280,437,454	0.8%	Rank history: not on the FY2021 list, #98 in FY2022, #56 in FY2024 and not on the FY2025 list; up 76 since FY2022.
23	Hensel Phelps - Shimizu JV 6 awardees, including Hensel Phelps Construction Co Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$277,045,692	0.8%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2024 and not on the FY2025 list; new.
24	Federal Contracting Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$264,422,139	0.7%	Rank history: not on the FY2021 list, #24 in FY2022, #75 in FY2024 and #67 in FY2025; unchanged since FY2022.
25	Richard Group LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DOJ (Department of Justice)	$264,371,818	0.7%	Rank history: not on the FY2021 list, #23 in FY2022, #30 in FY2024 and not on the FY2025 list; down 2 since FY2022.
26	R.a. Burch Construction Co., Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$259,942,735	0.7%	Rank history: #59 in FY2021, not on the FY2022 list, #63 in FY2024 and #53 in FY2025; up 392 since FY2022.
27	Nishimatsu Construction Co.,Ltd. Top agencies Army (Department of the Army)	$254,913,979	0.7%	Rank history: #45 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
28	Harper Construction Company, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$251,168,989	0.7%	Rank history: #10 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
29	Pernix International, LLC Top agencies DOS (Department of State)	$249,524,304	0.7%	Rank history: #8 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
30	Messer Construction Co Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command) GSA (General Services Administration)	$233,556,664	0.7%	Rank history: #32 in FY2021, not on the FY2022 list, #47 in FY2024 and not on the FY2025 list; up 286 since FY2022.
31	Core Tech-Hdcc-Kajima LLC Top agencies Navy (Department of the Navy)	$230,958,683	0.6%	Rank history: #3 in FY2021, not on the FY2022 list, #22 in FY2024 and #17 in FY2025; returned.
32	Sauer Holdings Inc. Through Sauer Construction, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$229,362,912	0.6%	Rank history: #61 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
33	Parsons Corporation 3 awardees, including Parsons Government Services Inc. and Ptsi Managed Services Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$224,350,194	0.6%	Rank history: #9 in FY2021, #90 in FY2022, #65 in FY2024 and #28 in FY2025; up 57 since FY2022.
34	Core TECH International Corporation Top agencies Navy (Department of the Navy)	$216,876,256	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	Conti Federal Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$200,615,480	0.6%	Rank history: not on the FY2021 list, #9 in FY2022, #9 in FY2024 and #34 in FY2025; down 26 since FY2022.
36	Cherokee Nation Through Cherokee CRC LLC Top agencies DOI (Department of the Interior) WHS (DOD Washington Headquarters Service)	$188,099,918	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 135 since FY2022.
37	M. a. Mortenson Companies Inc. Through M.a. Mortenson Company Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$178,036,343	0.5%	Rank history: #48 in FY2021, #32 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
38	MW Builders Inc. Through Cerris Builders, Inc. Top agencies Army (Department of the Army)	$175,983,165	0.5%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2024 and not on the FY2025 list; new.
39	Guyco Inc Top agencies Army (Department of the Army)	$170,757,952	0.5%	Rank history: not on the FY2021 list, #28 in FY2022, #46 in FY2024 and not on the FY2025 list; down 11 since FY2022.
40	Environmental Chemical Corporation 9 awardees, including Contrack ECC LLC, ECC Diego Garcia LLC and Environmental Chemical Corporation Italy S.R.L. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$158,690,760	0.4%	Rank history: not on the FY2021 list, #4 in FY2022, #85 in FY2024 and not on the FY2025 list; down 36 since FY2022.
41	HHI Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) Commerce (Department of Commerce)	$155,826,778	0.4%	Rank history: #63 in FY2021, #50 in FY2022, #52 in FY2024 and not on the FY2025 list; up 9 since FY2022.
42	Tutor Perini Corporation 3 awardees, including Perini Management Services, Inc. and ROY Anderson Corp Top agencies Army (Department of the Army) DOI (Department of the Interior) DHS (Department of Homeland Security)	$149,349,683	0.4%	Rank history: #16 in FY2021, #13 in FY2022, #72 in FY2024 and not on the FY2025 list; down 29 since FY2022.
43	The Povolny Group Inc. Top agencies VA (Department of Veterans Affairs)	$144,942,052	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 113 since FY2022.
44	CMS Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$140,749,143	0.4%	Rank history: #30 in FY2021, #43 in FY2022, #11 in FY2024 and #57 in FY2025; down 1 since FY2022.
45	AC JV One LLC Top agencies VA (Department of Veterans Affairs)	$131,098,831	0.4%	Rank history: not on the FY2021 list, #31 in FY2022, #55 in FY2024 and not on the FY2025 list; down 14 since FY2022.
46	Granite-Obayashi 2, A Joint Venture Top agencies Navy (Department of the Navy)	$126,132,400	0.4%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2024 and #24 in FY2025; new.
47	Korte Construction Company Top agencies Army (Department of the Army) Navy (Department of the Navy)	$125,320,569	0.4%	Rank history: #24 in FY2021, #59 in FY2022, #20 in FY2024 and #26 in FY2025; up 12 since FY2022.
48	CCI Utility and Construction Services, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$122,921,233	0.3%	Rank history: #38 in FY2021, #29 in FY2022, #31 in FY2024 and #35 in FY2025; down 19 since FY2022.
49	J & J Maintenance Inc. Top agencies Army (Department of the Army) DHA (Defense Health Agency) USAF (Department of the Air Force)	$121,279,078	0.3%	Rank history: #41 in FY2021, #16 in FY2022 and not on the FY2024–FY2025 lists; down 33 since FY2022.
50	ACC Construction Co., Inc. Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command)	$118,720,154	0.3%	Rank history: #31 in FY2021, #54 in FY2022, #70 in FY2024 and #18 in FY2025; up 4 since FY2022.
51	Paragon Professional Services LLC Top agencies Army (Department of the Army) DOS (Department of State)	$118,604,803	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
52	American Engineering Corporation 2 awardees, including Oshima Shokai Co., Ltd. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$112,281,786	0.3%	Rank history: not on the FY2021 list, #49 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
53	SGS LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$112,063,913	0.3%	Rank history: #88 in FY2021, #62 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
54	Manhattan Construction Company Top agencies Army (Department of the Army) Navy (Department of the Navy)	$111,825,576	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	ESA South, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$109,444,962	0.3%	Rank history: #100 in FY2021, #38 in FY2022, #82 in FY2024 and #48 in FY2025; down 17 since FY2022.
56	Signature Renovations LLC Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) DOJ (Department of Justice)	$95,914,559	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 153 since FY2022.
57	Sealaska Corporation 2 awardees, including Sealaska Constructors LLC Top agencies DOI (Department of the Interior) USAF (Department of the Air Force)	$93,830,015	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 60 since FY2022.
58	Olgoonik Enterprises, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Commerce (Department of Commerce)	$92,742,539	0.3%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2024 and #61 in FY2025; up 44 since FY2022.
59	Bering Straits Native Corporation 5 awardees, including Stampede Ventures, Inc., Arcticom, LLC and Eagle Eye Electric LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DOS (Department of State)	$91,767,922	0.3%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2024 list and #50 in FY2025; up 12 since FY2022.
60	SKE Support Services GMBH 2 awardees, including Sicra ILE De France Top agencies DOS (Department of State) USAF (Department of the Air Force) Army (Department of the Army)	$90,407,518	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 271 since FY2022.
61	Emr, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$89,929,362	0.3%	Rank history: not on the FY2021 list, #42 in FY2022, #86 in FY2024 and #44 in FY2025; down 19 since FY2022.
62	Bryan 77 Construction JV, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$84,447,156	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	The Nutmeg Companies, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) GSA (General Services Administration)	$83,820,042	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
64	MVL USA Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$82,796,670	0.2%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2024 and not on the FY2025 list; up 310 since FY2022.
65	Sea PAC Engineering Inc Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) DOS (Department of State)	$82,588,611	0.2%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2024 and #40 in FY2025; new.
66	Sgjv, LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$81,792,272	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 156 since FY2022.
67	Pacific Rim Constructors Inc. Top agencies Navy (Department of the Navy)	$79,767,273	0.2%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2024 and #99 in FY2025; up 422 since FY2022.
68	Bristol Bay Native Corporation 8 awardees, including Bristol General Contractors, LLC, CCI Energy and Construction Services, LLC and SES Infrastructure Services LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) USAF (Department of the Air Force)	$76,700,960	0.2%	Rank history: #80 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
69	Walsh - Turner JV II Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$76,101,135	0.2%	Rank history: #2 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
70	Bristol Design Build Services, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$75,176,971	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 136 since FY2022.
71	American International Contractors Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$74,828,730	0.2%	Rank history: not on the FY2021 list, #57 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
72	Advanced Technology Construction Corporation Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$74,530,449	0.2%	Rank history: #85 in FY2021, not on the FY2022 list, #84 in FY2024 and not on the FY2025 list; returned.
73	Turner Construction Company 2 awardees, including Sociedad Espanola De Montajes Industriales SA Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) GSA (General Services Administration)	$73,722,117	0.2%	Rank history: #18 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 29 since FY2022.
74	Ross Group Construction Corporation, LLC Top agencies Army (Department of the Army) GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$72,293,033	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
75	Zafer Taahhut Insaat VE Ticaret Anonim Sirketi Top agencies USAF (Department of the Air Force) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$71,835,877	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 172 since FY2022.
76	Seqirus USA Inc. Through Seqirus Inc. Top agencies HHS (Department of Health and Human Services)	$71,763,000	0.2%	Rank history: #43 in FY2021, #65 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
77	Black Construction-Tutor Perini JV Top agencies Navy (Department of the Navy)	$71,166,601	0.2%	Rank history: #37 in FY2021, #12 in FY2022, #23 in FY2024 and #38 in FY2025; down 65 since FY2022.
78	Guarantee Interiors, Inc. Top agencies VA (Department of Veterans Affairs)	$69,976,156	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 74 since FY2022.
79	MLU Services, LLC Top agencies DHS (Department of Homeland Security)	$69,241,696	0.2%	Rank history: not on the FY2021 list, #33 in FY2022, not on the FY2024 list and #64 in FY2025; down 46 since FY2022.
80	I.e.-Pacific, Inc. Top agencies Navy (Department of the Navy)	$68,193,678	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 69 since FY2022.
81	Obayashi Corporation 3 awardees, including E.w. Howell Co., LLC and Webcor Construction LP Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$67,813,789	0.2%	Rank history: #20 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 215 since FY2022.
82	Unit Company Top agencies Army (Department of the Army)	$67,661,368	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Butt Construction Company, Incorporated Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$66,852,842	0.2%	Rank history: not on the FY2021 list, #99 in FY2022, #74 in FY2024 and not on the FY2025 list; up 16 since FY2022.
84	SES Construction and Fuel Services LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency) NASA (National Aeronautics and Space Administration)	$65,890,282	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 292 since FY2022.
85	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corp Top agencies Navy (Department of the Navy)	$65,276,000	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #45 in FY2025; new.
86	Facility Services Management, Inc. 2 awardees, including FSI Construction, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$64,735,892	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #41 in FY2025; new.
87	Military & Federal Construction Co., Inc. Top agencies Navy (Department of the Navy)	$64,537,241	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 70 since FY2022.
88	Porr AG 4 awardees, including Porr Government Services GMBH, Porr Government Services Italy SRL and Porr Government Services Poland SP. Z O.o. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DODEA (Department of Defense Education Activity)	$64,414,015	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 343 since FY2022.
89	Desbuild Incorporated Top agencies DOS (Department of State) Navy (Department of the Navy) Army (Department of the Army)	$63,867,536	0.2%	Rank history: #76 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; down 26 since FY2022.
90	JV AFH Replacement Baumholder Top agencies Army (Department of the Army)	$63,210,272	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
91	Olgoonik Federal LLC 6 awardees, including Olgoonik Logistics, LLC, Olgoonik General, LLC and Olgoonik Specialty Contractors LLC Top agencies DOS (Department of State) HHS (Department of Health and Human Services) Army (Department of the Army)	$62,696,863	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Caddell-Nan A Joint Venture Top agencies Navy (Department of the Navy)	$62,610,903	0.2%	Rank history: #51 in FY2021, #75 in FY2022, #41 in FY2024 and not on the FY2025 list; down 17 since FY2022.
93	Roundhouse PBN - Tepa EC Joint Venture Top agencies Army (Department of the Army)	$59,676,381	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Watterson Construction Co Top agencies Army (Department of the Army)	$59,555,686	0.2%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and not on the FY2025 list; up 47 since FY2022.
95	The Haskell Company Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) Army (Department of the Army)	$57,486,332	0.2%	Rank history: not on the FY2021 list, #82 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
96	SES Electrical LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$57,059,338	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 38 since FY2022.
97	Insight Environmental Engineering & Construction, Inc. Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$55,824,830	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Nisou LGC JV II LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$55,323,946	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 221 since FY2022.
99	Bates Engineers / Contractors Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$54,641,659	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 320 since FY2022.
100	Aptim Federal Services LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$54,616,208	0.2%	Rank history: #28 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; down 75 since FY2022.

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100 of 3,577 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 236

Code	Net obligations	Largest contractor
2362 Nonresidential Building Construction	$34,036,290,115	Weston Solutions Holdings, Inc.
2361 Residential Building Construction	$731,380,098	Core TECH International Corporation

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $35.6 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2022. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2022 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 236 contractors in FY2023?

1. Weston Solutions Holdings, Inc. ($1.05B), 2. Brasfield & Gorrie LLC ($679M), 3. The Whiting-Turner Contracting Company ($674M), 4. Walsh Federal LLC ($674M), 5. Barnard Spencer Joint Venture ($628M), 6. Clark Construction Group LLC ($609M), 7. Slsco, Ltd. ($530M), 8. B.l. Harbert Holdings, L.L.C. ($497M), 9. Gilbane Federal ($485M), 10. Hensel Phelps Construction Co ($473M).

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