Top 100 Contractors in PSC C1AA: Architect and Engineering – Construction: Office Buildings, FY2025

Name: Top 100 Contractors in PSC C1AA: Architect and Engineering – Construction: Office Buildings, FY2025
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 63% of FY2025 PSC C1AA contract dollars

Contract obligations: $244,700,185 Net of deobligations, by contracts coded PSC C1AA
Contractors: 186 Parent companies with an obligation
Largest contractor: RME / PCI Joint Venture LLC $44.5 million, 17.1% of obligations
Data as of: Oct 23, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	RME / PCI Joint Venture LLC Top agencies DOS (Department of State)	$44,526,976	17.1%	Rank history: not on the FY2021–FY2024 lists; new.
2	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies DOS (Department of State) DOJ (Department of Justice)	$37,983,738	14.6%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Hellmuth, Obata & Kassabaum, Inc. Top agencies GSA (General Services Administration)	$18,226,357	7.0%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2024; up 28 since FY2024.
4	Smith-Miller + Hawkinson Architects, LLP Top agencies GSA (General Services Administration)	$14,391,209	5.5%	Rank history: not on the FY2021 list, #18 in FY2022, #45 in FY2023 and #48 in FY2024; up 44 since FY2024.
5	Insight Environmental Engineering & Construction, Inc. Top agencies USAF (Department of the Air Force)	$9,360,057	3.6%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023 and not on the FY2024 list; up 161 since FY2024.
6	Trane U.s. Inc. Top agencies GSA (General Services Administration)	$9,159,762	3.5%	Rank history: not on the FY2021 list, #5 in FY2022, not on the FY2023 list and #6 in FY2024; unchanged since FY2024.
7	Page Southerland Page, Inc. 2 awardees, including Page Federal Solutions, LLC Top agencies DOS (Department of State) GSA (General Services Administration)	$8,587,190	3.3%	Rank history: not on the FY2021 list, #31 in FY2022, #65 in FY2023 and #63 in FY2024; up 56 since FY2024.
8	Marvel Architects Landscape Architects Urban Designers PLLC Top agencies GSA (General Services Administration)	$7,662,562	2.9%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #20 in FY2024; up 12 since FY2024.
9	Dattner Architects DPC Top agencies GSA (General Services Administration) DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts)	$7,047,283	2.7%	Rank history: #12 in FY2021, #22 in FY2022, #15 in FY2023 and #3 in FY2024; down 6 since FY2024.
10	Jacobs Engineering Group Inc. 2 awardees, including Jacobs Government Services Company Top agencies DOJ (Department of Justice) Army (Department of the Army) HHS (Department of Health and Human Services)	$6,060,505	2.3%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2024; down 2 since FY2024.
11	Smithgroup, Inc. 2 awardees Top agencies GSA (General Services Administration)	$5,184,718	2.0%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2024; unchanged since FY2024.
12	Mtfa Architecture, Inc. Top agencies Navy (Department of the Navy) DOS (Department of State) VA (Department of Veterans Affairs)	$4,905,700	1.9%	Rank history: #36 in FY2021, #60 in FY2022, #30 in FY2023 and not on the FY2024 list; up 133 since FY2024.
13	Jacobs / B&M A Joint Venture Top agencies Navy (Department of the Navy)	$4,650,959	1.8%	Rank history: not on the FY2021–FY2024 lists; new.
14	Hdr, Inc. 3 awardees, including HDR Engineering, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$3,825,683	1.5%	Rank history: not on the FY2021 list, #88 in FY2022 and not on the FY2023–FY2024 lists; returned.
15	N.K. Bhandari Architecture & Engineering P.C. Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts) DHS (Department of Homeland Security)	$3,521,253	1.4%	Rank history: #56 in FY2021, #73 in FY2022, #25 in FY2023 and #14 in FY2024; down 1 since FY2024.
16	Mtfa Architecture, P.L.L.C. Top agencies Navy (Department of the Navy) DOS (Department of State) AOUSC (Administrative Office of the U.S. Courts)	$3,134,179	1.2%	Rank history: #43 in FY2021, #21 in FY2022, #21 in FY2023 and #12 in FY2024; down 4 since FY2024.
17	Snow Kreilich Architects Inc. Top agencies GSA (General Services Administration)	$2,471,725	0.9%	Rank history: not on the FY2021 list, #100 in FY2022, #3 in FY2023 and #61 in FY2024; up 44 since FY2024.
18	Davis Brody Bond-Spacesmith A Joint Venture Top agencies AOUSC (Administrative Office of the U.S. Courts) GSA (General Services Administration)	$2,306,731	0.9%	Rank history: not on the FY2021 list, #30 in FY2022, #6 in FY2023 and #45 in FY2024; up 27 since FY2024.
19	CDM Smith Inc. Through CDM Federal Programs Corporation Top agencies USAF (Department of the Air Force)	$2,116,102	0.8%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023 and not on the FY2024 list; returned.
20	Nana Regional Corporation Inc. Through Jade Creek Construction LLC Top agencies DOJ (Department of Justice)	$1,925,329	0.7%	Rank history: not on the FY2021–FY2024 lists; new.
21	Teya Support Services LLC Top agencies Navy (Department of the Navy)	$1,860,507	0.7%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; down 17 since FY2024.
22	Brasfield & Gorrie LLC Top agencies DOJ (Department of Justice)	$1,715,527	0.7%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2024; down 21 since FY2024.
23	The Haskell Company Through Benham - Mead & Hunt Top agencies USAF (Department of the Air Force)	$1,669,096	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
24	Capital Brand Group LLC Top agencies Navy (Department of the Navy)	$1,594,949	0.6%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; down 8 since FY2024.
25	Line and Space, LLC Top agencies GSA (General Services Administration) DHS (Department of Homeland Security)	$1,358,136	0.5%	Rank history: #23 in FY2021, #33 in FY2022, #18 in FY2023 and #18 in FY2024; down 7 since FY2024.
26	Rosche / 888 First Street, N.e. L.L.C. Top agencies DOE (Department of Energy)	$1,327,634	0.5%	Rank history: #37 in FY2021, #36 in FY2022, #40 in FY2023 and #32 in FY2024; up 6 since FY2024.
27	Anderson Engineering of Minnesota, LLC Top agencies VA (Department of Veterans Affairs)	$1,310,247	0.5%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and not on the FY2024 list; up 85 since FY2024.
28	WSP USA Inc. Top agencies Navy (Department of the Navy)	$1,253,236	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
29	WSP E&I - Zapata Joint Venture Top agencies USAF (Department of the Air Force)	$1,208,651	0.5%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #99 in FY2024; up 70 since FY2024.
30	Summer Consultants Inc Top agencies Navy (Department of the Navy) SSA (Social Security Administration) AOUSC (Administrative Office of the U.S. Courts)	$1,202,712	0.5%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023 and #10 in FY2024; down 20 since FY2024.
31	Burns & Mcdonnell, Inc. 2 awardees, including Burns & Mcdonnell Engineering Company, Inc. Top agencies DOT (Department of Transportation)	$1,193,351	0.5%	Rank history: #26 in FY2021, #71 in FY2022, not on the FY2023 list and #5 in FY2024; down 26 since FY2024.
32	Integrity - the La Group Joint Venture, LLC Top agencies VA (Department of Veterans Affairs)	$1,126,809	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
33	Caddell Construction Co. Inc. Through Caddell Construction Co. (De), LLC Top agencies DOS (Department of State)	$1,114,309	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
34	G.h. Forbes Associates Architects, P.C. Top agencies AOUSC (Administrative Office of the U.S. Courts) GSA (General Services Administration) DHS (Department of Homeland Security)	$1,095,465	0.4%	Rank history: #28 in FY2021, #50 in FY2022, #63 in FY2023 and #30 in FY2024; down 4 since FY2024.
35	Vali Cooper International LLC Top agencies VA (Department of Veterans Affairs)	$1,087,815	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
36	Guidehouse Inc. Through Aptim Federal Services, LLC Top agencies USAF (Department of the Air Force)	$1,053,035	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
37	Interactive Design Inc. Top agencies DOJ (Department of Justice) GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$1,007,220	0.4%	Rank history: #48 in FY2021, not on the FY2022 list, #36 in FY2023 and not on the FY2024 list; up 65 since FY2024.
38	Stantec Inc. Through Stantec Consulting Services Inc. Top agencies USAF (Department of the Air Force)	$1,006,371	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
39	Raw International, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) OSD (Office of the Secretary of Defense)	$952,776	0.4%	Rank history: not on the FY2021–FY2024 lists; up 76 since FY2024.
40	Grunley Construction Co., Inc. Top agencies USDA (Department of Agriculture)	$801,406	0.3%	Rank history: not on the FY2021 list, #2 in FY2022, #24 in FY2023 and #28 in FY2024; down 12 since FY2024.
41	Integriward LLC Top agencies DHS (Department of Homeland Security)	$795,351	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
42	Schmidt-Prime Group, LLC Top agencies USAF (Department of the Air Force)	$763,366	0.3%	Rank history: not on the FY2021 list, #96 in FY2022, #98 in FY2023 and not on the FY2024 list; returned.
43	Wiss, Janney, Elstner Associates, Inc. Top agencies GSA (General Services Administration)	$740,886	0.3%	Rank history: not on the FY2021 list, #62 in FY2022, #55 in FY2023 and #24 in FY2024; down 19 since FY2024.
44	Morphosis Architects Top agencies GSA (General Services Administration)	$739,909	0.3%	Rank history: #49 in FY2021, not on the FY2022 list, #19 in FY2023 and #60 in FY2024; up 16 since FY2024.
45	Olgoonik Innovations LLC Top agencies DOS (Department of State)	$715,990	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
46	Raymond Pond Full Service Solutions JV LLC Top agencies Navy (Department of the Navy)	$710,050	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
47	Razor Consulting Solutions, Inc. Through PMR Services II, LLC Top agencies USAF (Department of the Air Force)	$698,745	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
48	Caddell Construction Co. (De), LLC Top agencies DOS (Department of State)	$691,106	0.3%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 13 since FY2024.
49	Erga Group Sal Top agencies DOS (Department of State)	$666,000	0.3%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2024 list; returned.
50	AECOM 2 awardees, including AECOM Technical Services, Inc. Top agencies DHS (Department of Homeland Security) GSA (General Services Administration) USAF (Department of the Air Force)	$646,823	0.2%	Rank history: #5 in FY2021, #11 in FY2022, #51 in FY2023 and #42 in FY2024; down 8 since FY2024.
51	Krueck & Sexton Architects, Ltd Top agencies GSA (General Services Administration)	$633,446	0.2%	Rank history: #4 in FY2021, #46 in FY2022, not on the FY2023 list and #71 in FY2024; up 20 since FY2024.
52	Encon Desbuild JV 3 LLC Top agencies DOS (Department of State)	$620,574	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
53	Zapata / AME JV, LLC Top agencies USAF (Department of the Air Force)	$591,496	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
54	Procon Consulting LLC Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs)	$526,131	0.2%	Rank history: not on the FY2021–FY2024 lists; up 77 since FY2024.
55	Wiley Wilson Burns & Mcdonnell Joint Venture Top agencies Navy (Department of the Navy)	$497,440	0.2%	Rank history: #39 in FY2021, #58 in FY2022, #42 in FY2023 and #19 in FY2024; down 36 since FY2024.
56	Enercon Ltd Top agencies GSA (General Services Administration) SSA (Social Security Administration) DHS (Department of Homeland Security)	$497,020	0.2%	Rank history: #55 in FY2021, #59 in FY2022, #56 in FY2023 and #25 in FY2024; down 31 since FY2024.
57	Peschla + Rochmes GMBH Top agencies USAF (Department of the Air Force)	$470,827	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
58	Bailey Edward Design, Inc. Top agencies GSA (General Services Administration) DOJ (Department of Justice) DHS (Department of Homeland Security)	$469,834	0.2%	Rank history: #46 in FY2021, #34 in FY2022, #35 in FY2023 and #37 in FY2024; down 21 since FY2024.
59	Ramboll Americas Engineering Solutions Inc Top agencies Army (Department of the Army)	$469,286	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
60	Miller-Remick, LLC Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$449,476	0.2%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #78 in FY2024; up 18 since FY2024.
61	Colby Co LLC Top agencies GSA (General Services Administration)	$448,010	0.2%	Rank history: #77 in FY2021, #52 in FY2022, not on the FY2023 list and #86 in FY2024; up 25 since FY2024.
62	EXP U.s. Services Inc. Top agencies DOT (Department of Transportation)	$438,161	0.2%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2024; up 27 since FY2024.
63	Mason Architects, Inc. Top agencies USDA (Department of Agriculture) DODIG (Department of Defense Inspector General)	$437,539	0.2%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2024; up 12 since FY2024.
64	Qcm, Inc. Top agencies GSA (General Services Administration)	$425,400	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
65	Wiley & Wilson, Inc. Top agencies DOT (Department of Transportation)	$392,430	0.2%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2024 list; up 43 since FY2024.
66	Robert Siegel Top agencies DOS (Department of State)	$388,633	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and not on the FY2024 list; up 121 since FY2024.
67	Elevar Design Group Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) GSA (General Services Administration) DHS (Department of Homeland Security)	$381,215	0.1%	Rank history: #66 in FY2021, #67 in FY2022, #50 in FY2023 and #69 in FY2024; up 2 since FY2024.
68	Baysinger-Bric JV Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$370,657	0.1%	Rank history: #100 in FY2021, #42 in FY2022, #87 in FY2023 and #44 in FY2024; down 24 since FY2024.
69	Toland Mizell Molnar LLC Top agencies VA (Department of Veterans Affairs)	$349,112	0.1%	Rank history: #79 in FY2021 and not on the FY2022–FY2024 lists; up 107 since FY2024.
70	F2G A & E Joint Venture Top agencies HHS (Department of Health and Human Services)	$346,048	0.1%	Rank history: #64 in FY2021 and not on the FY2022–FY2024 lists; up 139 since FY2024.
71	Biscayne Contractors, Inc. Top agencies DOJ (Department of Justice)	$341,133	0.1%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; down 56 since FY2024.
72	Kenneth Hahn Architects Inc. Top agencies USAF (Department of the Air Force)	$334,389	0.1%	Rank history: #47 in FY2021, #66 in FY2022, not on the FY2023 list and #96 in FY2024; up 24 since FY2024.
73	KAL Architects, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts)	$321,947	0.1%	Rank history: #58 in FY2021, not on the FY2022–FY2023 lists and #76 in FY2024; up 3 since FY2024.
74	EJC International Services LLC Top agencies USAGM (US Agency for Global Media)	$315,873	0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and not on the FY2024 list; up 32 since FY2024.
75	Hammel Green & Abrahamson Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts)	$298,984	0.1%	Rank history: not on the FY2021–FY2024 lists; up 75 since FY2024.
76	Arcadis-Daly-Exp JV Top agencies USAF (Department of the Air Force)	$294,823	0.1%	Rank history: not on the FY2021 list, #20 in FY2022 and not on the FY2023–FY2024 lists; up 37 since FY2024.
77	Bhate Environmental Associates, Inc. Top agencies USAF (Department of the Air Force)	$280,651	0.1%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2024; down 55 since FY2024.
78	Bbix LLC Top agencies GSA (General Services Administration) DHS (Department of Homeland Security)	$275,925	0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and #56 in FY2024; down 22 since FY2024.
79	Tetra Tech, Inc. Through Tetra TECH / Mead and Hunt Joint Venture Top agencies USAF (Department of the Air Force)	$266,400	0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and not on the FY2024 list; up 54 since FY2024.
80	Quinlivan Pierik & Krause - Architects / Engineers LLP Top agencies Army (Department of the Army)	$263,567	0.1%	Rank history: not on the FY2021 list, #8 in FY2022 and not on the FY2023–FY2024 lists; up 69 since FY2024.
81	Grupo Solertec, Sociedad Anonima Top agencies DOS (Department of State)	$258,134	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Gurri Matute Cromwell JV LLC Top agencies USAF (Department of the Air Force)	$257,835	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
83	WSP USA Solutions Inc Through WSP USA Inc. Top agencies Navy (Department of the Navy)	$250,419	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
84	Whitman Requardt & Associates LLP	$250,000	0.1%	Rank history: not on the FY2021–FY2024 lists; up 41 since FY2024.
85	Cremer Global Services, Incorporated Top agencies DHS (Department of Homeland Security)	$241,770	0.1%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; down 72 since FY2024.
86	Stocks-Mann Architects PLC Top agencies USAF (Department of the Air Force)	$238,320	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
87	Studio Petretti Architecture, LLC Top agencies DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts)	$220,676	0.1%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; down 49 since FY2024.
88	Schooley Caldwell Associates Inc. Top agencies DOJ (Department of Justice) GSA (General Services Administration) OSD (Office of the Secretary of Defense)	$209,986	0.1%	Rank history: not on the FY2021–FY2024 lists; up 21 since FY2024.
89	Calibre-Fourfront Joint Venture LLP Top agencies VA (Department of Veterans Affairs)	$209,204	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
90	Duvall Decker Architects, P.A Top agencies GSA (General Services Administration)	$205,684	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 67 since FY2024.
91	Tecniservicios FBV SRL Top agencies DOS (Department of State)	$199,572	0.1%	Rank history: not on the FY2021–FY2024 lists; up 39 since FY2024.
92	Development One Inc Top agencies DCMA (Defense Contract Management Agency) AOUSC (Administrative Office of the U.S. Courts)	$194,570	0.1%	Rank history: not on the FY2021 list, #74 in FY2022, #29 in FY2023 and #26 in FY2024; down 66 since FY2024.
93	Perspectus Architecture LLC Top agencies AOUSC (Administrative Office of the U.S. Courts) GSA (General Services Administration) DOJ (Department of Justice)	$189,642	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023 and not on the FY2024 list; up 54 since FY2024.
94	Sabiedriba Ar Ierobezotu Atbildibu "Elset" Top agencies DOS (Department of State)	$187,690	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
95	Tahzib Engineering Services Top agencies DOS (Department of State)	$186,706	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
96	Pond-Cdm Smith JV LP Top agencies USAF (Department of the Air Force)	$185,777	0.1%	Rank history: not on the FY2021 list, #92 in FY2022 and not on the FY2023–FY2024 lists; up 21 since FY2024.
97	KOO LLC Top agencies AOUSC (Administrative Office of the U.S. Courts) GSA (General Services Administration) DOJ (Department of Justice)	$177,829	0.1%	Rank history: #88 in FY2021, #51 in FY2022, #54 in FY2023 and #50 in FY2024; down 47 since FY2024.
98	Steven Kahle Architects, Inc. Top agencies GSA (General Services Administration)	$173,078	0.1%	Rank history: #67 in FY2021, #40 in FY2022, #97 in FY2023 and #58 in FY2024; down 40 since FY2024.
99	Signature Renovations LLC Top agencies WHS (DOD Washington Headquarters Service)	$170,973	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Wold Architects Incorporated Top agencies GSA (General Services Administration) SSA (Social Security Administration)	$166,175	0.1%	Rank history: #59 in FY2021, #29 in FY2022 and not on the FY2023–FY2024 lists; up 40 since FY2024.

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100 of 186 contractors listed here. See the rest on GovTribe.

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 $260 million 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.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 PSC C1AA contractors in FY2025?

1. RME / PCI Joint Venture LLC ($44.5M), 2. B.l. Harbert Holdings, L.L.C. ($38M), 3. Hellmuth, Obata & Kassabaum, Inc. ($18.2M), 4. Smith-Miller + Hawkinson Architects, LLP ($14.4M), 5. Insight Environmental Engineering & Construction, Inc. ($9.36M), 6. Trane U.s. Inc. ($9.16M), 7. Page Southerland Page, Inc. ($8.59M), 8. Marvel Architects Landscape Architects Urban Designers PLLC ($7.66M), 9. Dattner Architects DPC ($7.05M), 10. Jacobs Engineering Group Inc. ($6.06M).

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