Top 100 Contractors in NAICS 23621: Industrial Building Construction, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bechtel Corp Through Bechtel National, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$230,400,000	21.7%	Rank history: #4 in FY2021, #6 in FY2022, #1 in FY2023, #2 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Bristol Bay Native Corporation 6 awardees, including CCI Prime Contractors, LLC, SES Construction and Fuel Services LLC and CCI Facility Contractors, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DOJ (Department of Justice)	$140,440,245	13.2%	Rank history: #22 in FY2021, not on the FY2022 list, #52 in FY2023, #62 in FY2024 and #12 in FY2025; up 60 since Aug 2024–Jul 2025.
3	Seqirus Inc. Top agencies HHS (Department of Health and Human Services)	$80,769,000	7.6%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #5 in FY2025; down 1 since Aug 2024–Jul 2025.
4	Dragados Sociedad Anonima Top agencies Navy (Department of the Navy)	$79,678,985	7.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
5	Advon Corporation Top agencies NASA (National Aeronautics and Space Administration)	$47,935,698	4.5%	Rank history: #20 in FY2021, #12 in FY2022, #20 in FY2023, #18 in FY2024 and #13 in FY2025; up 82 since Aug 2024–Jul 2025.
6	A & H-Ambica JV LLC Top agencies NASA (National Aeronautics and Space Administration)	$44,269,111	4.2%	Rank history: #8 in FY2021, #88 in FY2022, not on the FY2023 list, #76 in FY2024 and #9 in FY2025; up 8 since Aug 2024–Jul 2025.
7	Healtheon, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$42,514,138	4.0%	Rank history: #11 in FY2021, #1 in FY2022, #7 in FY2023, #9 in FY2024 and #10 in FY2025; up 1 since Aug 2024–Jul 2025.
8	Tutor Perini Corporation Through Perini Management Services, Inc. Top agencies Army (Department of the Army)	$35,835,160	3.4%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; new, not ranked in Aug 2024–Jul 2025.
9	Civil Works Contracting LLC Top agencies NASA (National Aeronautics and Space Administration)	$31,045,855	2.9%	Rank history: #21 in FY2021, #30 in FY2022, #13 in FY2023, #78 in FY2024 and #23 in FY2025; up 15 since Aug 2024–Jul 2025.
10	Hitt Contracting, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$30,259,198	2.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
11	Birmingham Industrial Construction, LLC Top agencies NASA (National Aeronautics and Space Administration)	$29,422,955	2.8%	Rank history: #12 in FY2021, #28 in FY2022, #57 in FY2023, #13 in FY2024 and #7 in FY2025; unchanged since Aug 2024–Jul 2025.
12	Diversified Construction of Oklahoma, Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$19,336,589	1.8%	Rank history: #23 in FY2021, #17 in FY2022, #56 in FY2023, #7 in FY2024 and #17 in FY2025; down 5 since Aug 2024–Jul 2025.
13	Richard Group LLC Top agencies Army (Department of the Army)	$17,021,678	1.6%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Aug 2024–Jul 2025.
14	Drace Construction Corp Top agencies NASA (National Aeronautics and Space Administration)	$13,896,878	1.3%	Rank history: not on the FY2021 list, #13 in FY2022, not on the FY2023 list, #15 in FY2024 and #38 in FY2025; up 2 since Aug 2024–Jul 2025.
15	Sedona- Nasco Joint Venture Top agencies Army (Department of the Army)	$13,584,282	1.3%	Rank history: not on the FY2021 list, #19 in FY2022, #12 in FY2023, #8 in FY2024 and #14 in FY2025; down 6 since Aug 2024–Jul 2025.
16	Ciri Development Corporation 2 awardees, including North Wind General Contractors LLC Top agencies USAF (Department of the Air Force)	$11,686,378	1.1%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; new, not ranked in Aug 2024–Jul 2025.
17	Midlands Mechanical, Inc. Top agencies Treasury (Department of the Treasury)	$9,714,939	0.9%	Rank history: #72 in FY2021, #81 in FY2022, #61 in FY2023, #91 in FY2024 and #39 in FY2025; up 43 since Aug 2024–Jul 2025.
18	Veterans Holding Group LLC Through Relyant Global LLC Top agencies Navy (Department of the Navy)	$9,561,700	0.9%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and not on the FY2025 list; up 37 since Aug 2024–Jul 2025.
19	Polk & Associates Construction Inc. Top agencies Navy (Department of the Navy)	$7,852,897	0.7%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Aug 2024–Jul 2025.
20	Olgoonik General, LLC Top agencies HHS (Department of Health and Human Services)	$5,781,682	0.5%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #28 in FY2025; up 60 since Aug 2024–Jul 2025.
21	Heritage-M2C1 Joint Venture Top agencies USAF (Department of the Air Force)	$5,366,947	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
22	Maven Construction & Environmental LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$5,185,014	0.5%	Rank history: not on the FY2021–FY2023 lists, #66 in FY2024 and #24 in FY2025; up 5 since Aug 2024–Jul 2025.
23	Guardian Construction, Inc. Top agencies USAF (Department of the Air Force)	$4,987,007	0.5%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Aug 2024–Jul 2025.
24	Dawson Mcg, Inc. Top agencies DLA (Defense Logistics Agency)	$4,718,967	0.4%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Aug 2024–Jul 2025.
25	MX Construction, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,593,586	0.4%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Aug 2024–Jul 2025.
26	Ritz Construction Inc. Top agencies DODEA (Department of Defense Education Activity) DOI (Department of the Interior)	$4,512,733	0.4%	Rank history: not on the FY2021–FY2023 lists, #85 in FY2024 and #29 in FY2025; up 60 since Aug 2024–Jul 2025.
27	Cheroenhaka Nottoway Enterprises, LLC Top agencies Navy (Department of the Navy)	$4,334,532	0.4%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 7 since Aug 2024–Jul 2025.
28	Serco Inc Top agencies Army (Department of the Army)	$4,268,476	0.4%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #30 in FY2025; new, not ranked in Aug 2024–Jul 2025.
29	Walsh Federal LLC Top agencies Navy (Department of the Navy)	$4,032,795	0.4%	Rank history: #47 in FY2021, #3 in FY2022, #3 in FY2023, #5 in FY2024 and #8 in FY2025; down 23 since Aug 2024–Jul 2025.
30	M. a. Mortenson Companies Inc. Through M.a. Mortenson Company Top agencies Army (Department of the Army)	$3,862,353	0.4%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #16 in FY2025; down 12 since Aug 2024–Jul 2025.
31	SK Construction and Management Inc. Top agencies Army (Department of the Army)	$3,483,402	0.3%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #19 in FY2025; down 16 since Aug 2024–Jul 2025.
32	Teya Support Services LLC Top agencies Navy (Department of the Navy)	$3,470,365	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
33	Warden Construction Corporation Top agencies USAF (Department of the Air Force)	$3,222,360	0.3%	Rank history: #95 in FY2021, #60 in FY2022, #28 in FY2023, #72 in FY2024 and #26 in FY2025; down 1 since Aug 2024–Jul 2025.
34	Carmen Roofing Services, LLC Top agencies USAF (Department of the Air Force)	$3,199,786	0.3%	Rank history: not on the FY2021 list, #51 in FY2022, not on the FY2023 list, #68 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
35	K & K Industries Inc Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$3,183,271	0.3%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023, #42 in FY2024 and #61 in FY2025; up 21 since Aug 2024–Jul 2025.
36	Excell Construction Corp Top agencies Navy (Department of the Navy)	$2,414,156	0.2%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #41 in FY2025; up 12 since Aug 2024–Jul 2025.
37	Reliance Team Joint Venture 2 LLC Top agencies HHS (Department of Health and Human Services)	$2,361,977	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
38	Cody M Stevens Construction Inc. Top agencies Navy (Department of the Navy)	$2,320,350	0.2%	Rank history: not on the FY2021 list, #85 in FY2022, #69 in FY2023, #45 in FY2024 and #34 in FY2025; unchanged since Aug 2024–Jul 2025.
39	Greenland Enterprises Inc. Top agencies Army (Department of the Army)	$2,088,062	0.2%	Rank history: #6 in FY2021, not on the FY2022 list, #30 in FY2023, #49 in FY2024 and #40 in FY2025; up 28 since Aug 2024–Jul 2025.
40	Puyenpa Technologies LLC Through Puyenpa Construction, LLC Top agencies Navy (Department of the Navy)	$1,999,980	0.2%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Aug 2024–Jul 2025.
41	Forus Contracting, Inc. Top agencies Navy (Department of the Navy)	$1,871,200	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
42	Creativity Global Consultancy Limited Top agencies USAF (Department of the Air Force)	$1,789,743	0.2%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Aug 2024–Jul 2025.
43	Griffith Contracting, LLC Top agencies USAF (Department of the Air Force)	$1,651,929	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
44	Cybarco Contracting Limited Top agencies Navy (Department of the Navy)	$1,565,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Aug 2024–Jul 2025.
45	Sabree, Inc. Top agencies Navy (Department of the Navy)	$1,547,971	0.1%	Rank history: #48 in FY2021, not on the FY2022 list, #62 in FY2023, not on the FY2024 list and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
46	Jakambaga General Contractors Limited Top agencies USAF (Department of the Air Force)	$1,545,390	0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
47	Chugach Alaska Corporation Through Chugach Pacific Solutions LLC Top agencies USAF (Department of the Air Force)	$1,476,658	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
48	Bizsolutions 360 Inc. Top agencies Navy (Department of the Navy)	$1,476,594	0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	Armitage Architecture Inc. Top agencies Navy (Department of the Navy)	$1,466,287	0.1%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; up 29 since Aug 2024–Jul 2025.
50	Kwaan RB Construction and Facility Services, LLC Top agencies USAF (Department of the Air Force)	$1,439,095	0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Aug 2024–Jul 2025.
51	SPR Construction Corporation Top agencies Army (Department of the Army) Treasury (Department of the Treasury)	$1,349,179	0.1%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #60 in FY2025; new, not ranked in Aug 2024–Jul 2025.
52	Red Point Construction, LLC Top agencies USAF (Department of the Air Force)	$1,289,412	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Aug 2024–Jul 2025.
53	Mcintyre Brothers LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,173,928	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, not on the FY2023 list, #95 in FY2024 and #55 in FY2025; up 12 since Aug 2024–Jul 2025.
54	Serena Construction LLC Top agencies Navy (Department of the Navy)	$1,121,406	0.1%	Rank history: not on the FY2021 list, #39 in FY2022, #95 in FY2023, #67 in FY2024 and #94 in FY2025; up 28 since Aug 2024–Jul 2025.
55	Gy6, LLC Top agencies Navy (Department of the Navy)	$1,014,367	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
56	Martinez Services, Inc. Top agencies Navy (Department of the Navy)	$898,046	0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023, not on the FY2024 list and #43 in FY2025; up 10 since Aug 2024–Jul 2025.
57	Granite-Obayashi A Joint Venture Top agencies Navy (Department of the Navy)	$893,692	0.1%	Rank history: #5 in FY2021, #15 in FY2022, #37 in FY2023, #71 in FY2024 and #67 in FY2025; up 137 since Aug 2024–Jul 2025.
58	Keystone TECH Top agencies DOS (Department of State)	$808,055	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
59	Parsons Corporation 2 awardees, including Parsons Government Services Inc. Top agencies Army (Department of the Army)	$753,251	0.1%	Rank history: #1 in FY2021, #7 in FY2022, #2 in FY2023, #11 in FY2024 and #2 in FY2025; down 56 since Aug 2024–Jul 2025.
60	Raad Construction Group LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$743,845	0.1%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #75 in FY2024 and #70 in FY2025; up 23 since Aug 2024–Jul 2025.
61	Mastercraft Mechanical Contractors, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$741,794	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #49 in FY2023, not on the FY2024 list and #74 in FY2025; up 12 since Aug 2024–Jul 2025.
62	Lucianos Excavation Inc. Top agencies Navy (Department of the Navy)	$735,604	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
63	Cinka Construction & Consulting Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$731,555	0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Aug 2024–Jul 2025.
64	Corenic Construction Group LLC Top agencies Commerce (Department of Commerce)	$643,356	0.1%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #76 in FY2025; up 31 since Aug 2024–Jul 2025.
65	Ironwood Commercial Builders Inc. Top agencies USAF (Department of the Air Force)	$626,870	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
66	Four Tribes Construction Services, LLC Top agencies Navy (Department of the Navy)	$605,600	0.1%	Rank history: #19 in FY2021, #55 in FY2022, #68 in FY2023, #38 in FY2024 and #21 in FY2025; down 44 since Aug 2024–Jul 2025.
67	Tidewater, Inc. Top agencies USAF (Department of the Air Force)	$586,865	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	Lorenzon Construction, Inc. Top agencies Treasury (Department of the Treasury)	$562,685	0.1%	Rank history: #77 in FY2021, #43 in FY2022, #42 in FY2023, #19 in FY2024 and #59 in FY2025; down 39 since Aug 2024–Jul 2025.
69	Blue Construction Services LLC Top agencies Navy (Department of the Navy)	$539,808	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #78 in FY2023, #56 in FY2024 and #77 in FY2025; down 19 since Aug 2024–Jul 2025.
70	The Riff Group, LLC Top agencies Treasury (Department of the Treasury)	$532,222	0.1%	Rank history: #42 in FY2021, #26 in FY2022, #21 in FY2023, #35 in FY2024 and #66 in FY2025; down 28 since Aug 2024–Jul 2025.
71	E.j.wallace Enterprises, Inc. Top agencies USAF (Department of the Air Force)	$528,413	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
72	Precision Resources Inc. Through Precision Mechanical Inc. Top agencies NASA (National Aeronautics and Space Administration)	$515,444	<0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; down 33 since Aug 2024–Jul 2025.
73	DH Ortega Construction LLC Top agencies USDA (Department of Agriculture)	$504,680	<0.1%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and not on the FY2025 list; down 45 since Aug 2024–Jul 2025.
74	DFS Construction, LLC Top agencies DOS (Department of State)	$472,824	<0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; down 3 since Aug 2024–Jul 2025.
75	Morello Construction LLC Top agencies DOI (Department of the Interior)	$463,266	<0.1%	Rank history: not on the FY2021 list, #25 in FY2022, #35 in FY2023, #80 in FY2024 and #81 in FY2025; down 3 since Aug 2024–Jul 2025.
76	CTI Environmental Inc Top agencies DHS (Department of Homeland Security)	$463,010	<0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; new, not ranked in Aug 2024–Jul 2025.
77	Mickan Generalbaugesellschaft Amberg MBH & Co. KG Top agencies Army (Department of the Army)	$438,966	<0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; new, not ranked in Aug 2024–Jul 2025.
78	New Dominion Construction LLC Top agencies Navy (Department of the Navy)	$416,733	<0.1%	Rank history: #41 in FY2021, #76 in FY2022, not on the FY2023 list, #69 in FY2024 and #92 in FY2025; up 7 since Aug 2024–Jul 2025.
79	Creative Builds Corporation Top agencies DHS (Department of Homeland Security)	$415,074	<0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; down 20 since Aug 2024–Jul 2025.
80	Southeast Cherokee Construction, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$390,814	<0.1%	Rank history: #68 in FY2021, #37 in FY2022, #19 in FY2023, #50 in FY2024 and #79 in FY2025; down 39 since Aug 2024–Jul 2025.
81	Baron Communications Incorporated Top agencies Navy (Department of the Navy)	$382,597	<0.1%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; down 35 since Aug 2024–Jul 2025.
82	Velox Up LLC Top agencies USAF (Department of the Air Force)	$376,201	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
83	Nadiad Inc. Top agencies Navy (Department of the Navy)	$360,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and not on the FY2025 list; up 21 since Aug 2024–Jul 2025.
84	Veyka Insaat Mimarlik Muhendislik Sanayi IC VE Dis Ticaret Anonim Sirketi Top agencies DOS (Department of State)	$353,018	<0.1%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023, not on the FY2024 list and #68 in FY2025; down 14 since Aug 2024–Jul 2025.
85	K&K JL Services, Inc. Top agencies USAF (Department of the Air Force)	$348,426	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
86	Iscani Industries LLC Top agencies USAF (Department of the Air Force)	$345,226	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	Atlantic Pacific Standard LLC Top agencies USAF (Department of the Air Force)	$342,596	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
88	Seneca Federal Solutions, LLC Top agencies DOJ (Department of Justice)	$303,677	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 5 since Aug 2024–Jul 2025.
89	Hunatek Federal Services, LLC Top agencies DHS (Department of Homeland Security)	$301,091	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	Mig Gov, LLC Top agencies Navy (Department of the Navy)	$291,091	<0.1%	Rank history: not on the FY2021 list, #47 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	Sea PAC Engineering Inc Top agencies DOS (Department of State)	$290,612	<0.1%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023, #64 in FY2024 and #42 in FY2025; down 38 since Aug 2024–Jul 2025.
92	Koman Government Solutions LLC Top agencies Navy (Department of the Navy)	$280,769	<0.1%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #63 in FY2025; down 28 since Aug 2024–Jul 2025.
93	Astral Constructors (Private) Limited Top agencies DOS (Department of State)	$269,171	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	Pontchartrain Partners LLC Top agencies NASA (National Aeronautics and Space Administration)	$267,665	<0.1%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
95	Buildtec Corp Top agencies Navy (Department of the Navy)	$260,028	<0.1%	Rank history: #57 in FY2021, #24 in FY2022, #70 in FY2023, #48 in FY2024 and #95 in FY2025; down 50 since Aug 2024–Jul 2025.
96	Bauteam Hahn GMBH Top agencies Army (Department of the Army)	$253,668	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
97	B3 Construction, Inc. Top agencies GSA (General Services Administration)	$249,848	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Isobox Inc. Top agencies Army (Department of the Army)	$246,112	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
99	Porr Government Services Italy SRL 2 awardees Top agencies Army (Department of the Army)	$236,012	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Kapaa Design Build Company Limited Top agencies Navy (Department of the Navy)	$227,763	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 28 since Aug 2024–Jul 2025.

Rankings for the codes under NAICS 23621

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 $1.06 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers