Top 100 Contractors in PSC C1AA: Architect and Engineering – Construction: Office Buildings, FY2021

Name: Top 100 Contractors in PSC C1AA: Architect and Engineering – Construction: Office Buildings, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 60% of FY2021 PSC C1AA contract dollars

Contract obligations: $301,775,460 Net of deobligations, by contracts coded PSC C1AA
Contractors: 219 Parent companies with an obligation
Largest contractor: B.l. Harbert Holdings, L.L.C. $61.4 million, 19.7% 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	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies DOS (Department of State)	$61,406,870	19.7%	Rank history: #1 in FY2022, #1 in FY2023, #2 in FY2024 and not on the FY2025 list; unchanged since FY2020.
2	WHR Architects, Inc. Through Page Southerland Page, Inc. Top agencies DOS (Department of State) DHS (Department of Homeland Security) GSA (General Services Administration)	$36,972,708	11.8%	Rank history: #14 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
3	Parsons Corporation Through Parsons Government Services Inc. Top agencies DOL (Department of Labor)	$27,489,484	8.8%	Rank history: #3 in FY2022, #14 in FY2023, #9 in FY2024 and not on the FY2025 list; down 1 since FY2020.
4	Krueck & Sexton Architects, Ltd Top agencies GSA (General Services Administration)	$16,042,497	5.1%	Rank history: #46 in FY2022, not on the FY2023 list, #71 in FY2024 and #52 in FY2025; new, not ranked in FY2020.
5	AECOM 5 awardees, including AECOM Technical Services, Inc., URS Group, Inc. and AECOM Services, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) Navy (Department of the Navy)	$9,138,191	2.9%	Rank history: #11 in FY2022, #51 in FY2023, #42 in FY2024 and not on the FY2025 list; up 17 since FY2020.
6	Trane U.S. Inc. Top agencies GSA (General Services Administration)	$8,189,087	2.6%	Rank history: not on the FY2022 list, #10 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
7	Pernix Group, Inc. Top agencies DOS (Department of State)	$7,870,689	2.5%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
8	Desbuild Incorporated Top agencies DOS (Department of State)	$7,185,729	2.3%	Rank history: not on the FY2022 list, #26 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
9	Chickasaw Defense Logistics, LLC Top agencies Army (Department of the Army)	$6,374,241	2.0%	Rank history: #4 in FY2022, #8 in FY2023, #84 in FY2024 and not on the FY2025 list; down 6 since FY2020.
10	Smithgroup Companies, Inc. 2 awardees, including Smithgroup, Inc. Top agencies GSA (General Services Administration) EPA (Environmental Protection Agency)	$5,496,036	1.8%	Rank history: not on the FY2022 list, #86 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
11	Skidmore, Owings & Merrill LLP 2 awardees Top agencies GSA (General Services Administration)	$5,109,469	1.6%	Rank history: not on the FY2022–FY2025 lists; up 77 since FY2020.
12	Dattner Architects DPC Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts)	$5,014,919	1.6%	Rank history: #22 in FY2022, #15 in FY2023, #3 in FY2024 and #8 in FY2025; down 4 since FY2020.
13	Summer Consultants, Inc. Top agencies GSA (General Services Administration) HHS (Department of Health and Human Services) SSA (Social Security Administration)	$4,228,496	1.4%	Rank history: #6 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
14	Caddell Construction Co., Inc. Through Caddell Construction Co. (De), LLC Top agencies DOS (Department of State)	$4,061,876	1.3%	Rank history: #37 in FY2022, #11 in FY2023, #62 in FY2024 and not on the FY2025 list; down 8 since FY2020.
15	Pem-Harkins JV LLP Top agencies DHS (Department of Homeland Security)	$4,000,000	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
16	Richard & Kennedy Architects, LLC Top agencies DOS (Department of State)	$3,906,802	1.3%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
17	Lbyd Inc. Top agencies DOJ (Department of Justice)	$3,111,494	1.0%	Rank history: not on the FY2022–FY2025 lists; up 187 since FY2020.
18	Andrew C Chen 3 awardees Top agencies GSA (General Services Administration)	$2,927,376	0.9%	Rank history: #17 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
19	Jacobs Government Services Company Top agencies Navy (Department of the Navy)	$2,846,569	0.9%	Rank history: not on the FY2022 list, #9 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
20	Henry Adams, LLC Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs) SSA (Social Security Administration)	$2,613,585	0.8%	Rank history: #44 in FY2022, #88 in FY2023, #67 in FY2024 and not on the FY2025 list; up 9 since FY2020.
21	Perkins Eastman Architects DPC Top agencies GSA (General Services Administration)	$2,283,206	0.7%	Rank history: #55 in FY2022, #59 in FY2023, #87 in FY2024 and not on the FY2025 list; down 6 since FY2020.
22	Nve, Inc. Top agencies DOS (Department of State)	$2,252,196	0.7%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 16 since FY2020.
23	Line and Space, LLC Top agencies GSA (General Services Administration) DOJ (Department of Justice)	$2,199,416	0.7%	Rank history: #33 in FY2022, #18 in FY2023, #18 in FY2024 and #26 in FY2025; up 54 since FY2020.
24	Oak Point Associates Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) SSA (Social Security Administration)	$1,991,977	0.6%	Rank history: #25 in FY2022, #37 in FY2023, #41 in FY2024 and not on the FY2025 list; up 28 since FY2020.
25	R K Banerjee Inc. Top agencies USAF (Department of the Air Force)	$1,877,555	0.6%	Rank history: not on the FY2022–FY2025 lists; up 102 since FY2020.
26	Burns & Mcdonnell, Inc. 2 awardees, including Burns & Mcdonnell Engineering Company, Inc. Top agencies DOT (Department of Transportation) USAF (Department of the Air Force)	$1,868,479	0.6%	Rank history: #71 in FY2022, not on the FY2023 list, #5 in FY2024 and not on the FY2025 list; up 93 since FY2020.
27	Seay Seay & Litchfield PC Top agencies USAF (Department of the Air Force)	$1,821,479	0.6%	Rank history: #99 in FY2022, #44 in FY2023, #72 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
28	G.h. Forbes Associates Architects, P.C. Top agencies GSA (General Services Administration) DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts)	$1,810,944	0.6%	Rank history: #50 in FY2022, #63 in FY2023, #30 in FY2024 and #35 in FY2025; up 39 since FY2020.
29	Bbix LLC Top agencies GSA (General Services Administration) DOJ (Department of Justice)	$1,803,499	0.6%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; up 30 since FY2020.
30	GBR Architects LLC Top agencies GSA (General Services Administration)	$1,771,385	0.6%	Rank history: #9 in FY2022, #66 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
31	Jacobs Engineering Group Inc. 4 awardees, including Ch2M Hill - HDR JV, Ch2M Hill, Inc. and Jacobs Government Services Co Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,739,232	0.6%	Rank history: not on the FY2022 list, #4 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
32	The Christman Company Top agencies DHS (Department of Homeland Security)	$1,720,779	0.6%	Rank history: not on the FY2022–FY2025 lists; up 96 since FY2020.
33	Arkel Ortadogu JV LLC Top agencies DOS (Department of State)	$1,712,751	0.5%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
34	Bullock Tice Associates, LLC Top agencies USAF (Department of the Air Force)	$1,502,174	0.5%	Rank history: not on the FY2022–FY2025 lists; up 152 since FY2020.
35	Clark Nexsen Inc. Top agencies DHS (Department of Homeland Security)	$1,444,859	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	Mtfa Architecture, Inc. Top agencies Navy (Department of the Navy) USUHS (DOD Uniformed Services University of the Health Sciences)	$1,443,827	0.5%	Rank history: #60 in FY2022, #30 in FY2023, not on the FY2024 list and #12 in FY2025; down 15 since FY2020.
37	Rosche / 888 First Street, N.e. L.L.C. Top agencies DOE (Department of Energy)	$1,419,084	0.5%	Rank history: #36 in FY2022, #40 in FY2023, #32 in FY2024 and #27 in FY2025; up 125 since FY2020.
38	Bell Architects, P.C Top agencies GSA (General Services Administration) DOS (Department of State)	$1,406,150	0.5%	Rank history: #47 in FY2022, not on the FY2023 list, #80 in FY2024 and not on the FY2025 list; up 47 since FY2020.
39	Wiley Wilson Burns & Mcdonnell Joint Venture Top agencies Navy (Department of the Navy) USUHS (DOD Uniformed Services University of the Health Sciences)	$1,358,648	0.4%	Rank history: #58 in FY2022, #42 in FY2023, #19 in FY2024 and #56 in FY2025; up 23 since FY2020.
40	AE Works Ltd Top agencies VA (Department of Veterans Affairs)	$1,341,561	0.4%	Rank history: #41 in FY2022, #12 in FY2023 and not on the FY2024–FY2025 lists; down 30 since FY2020.
41	Hdr-Obg A Joint Venture Top agencies Army (Department of the Army)	$1,311,911	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	MBF Architects, P.a. Top agencies Navy (Department of the Navy)	$1,297,579	0.4%	Rank history: not on the FY2022 list, #91 in FY2023, #65 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
43	Mtfa Architecture, P.L.L.C. Top agencies GSA (General Services Administration) EOP (Executive Office of the President)	$1,180,088	0.4%	Rank history: #21 in FY2022, #21 in FY2023, #12 in FY2024 and #16 in FY2025; up 48 since FY2020.
44	Raymond Global, Inc. Top agencies USAF (Department of the Air Force)	$1,150,497	0.4%	Rank history: #49 in FY2022 and not on the FY2023–FY2025 lists; down 16 since FY2020.
45	O'Brien & Gere Engineers Inc. Through Ramboll Americas Engineering Solutions Inc. Top agencies Army (Department of the Army)	$1,084,581	0.3%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
46	Bailey Edward Design, Inc. Top agencies GSA (General Services Administration) USDA (Department of Agriculture) DOJ (Department of Justice)	$1,034,844	0.3%	Rank history: #34 in FY2022, #35 in FY2023, #37 in FY2024 and #59 in FY2025; down 15 since FY2020.
47	Kenneth Hahn Architects Inc. Top agencies USAF (Department of the Air Force)	$1,027,182	0.3%	Rank history: #66 in FY2022, not on the FY2023 list, #96 in FY2024 and #73 in FY2025; down 13 since FY2020.
48	Interactive Design Inc. Top agencies GSA (General Services Administration)	$1,019,564	0.3%	Rank history: not on the FY2022 list, #36 in FY2023, not on the FY2024 list and #38 in FY2025; up 20 since FY2020.
49	Morphosis Architects Top agencies DOS (Department of State)	$995,000	0.3%	Rank history: not on the FY2022 list, #19 in FY2023, #60 in FY2024 and #45 in FY2025; new, not ranked in FY2020.
50	EBL Engineers, LLC Top agencies DOS (Department of State) VA (Department of Veterans Affairs) GSA (General Services Administration)	$939,820	0.3%	Rank history: #53 in FY2022, #57 in FY2023, #49 in FY2024 and not on the FY2025 list; down 14 since FY2020.
51	Mndpi Pacific JV Top agencies Navy (Department of the Navy)	$924,844	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	HOK Group, Inc. 2 awardees, including Hellmuth, Obata & Kassabaum, P.C. and Hellmuth, Obata & Kassabaum, Inc. Top agencies DOS (Department of State) GSA (General Services Administration)	$914,869	0.3%	Rank history: #65 in FY2022, #39 in FY2023, #74 in FY2024 and not on the FY2025 list; down 45 since FY2020.
53	Development One Inc. Top agencies GSA (General Services Administration)	$854,426	0.3%	Rank history: not on the FY2022–FY2025 lists; up 59 since FY2020.
54	G.m. Hill Engineering, Inc. Top agencies EPA (Environmental Protection Agency)	$844,587	0.3%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; down 34 since FY2020.
55	Enercon Ltd Top agencies GSA (General Services Administration) DHS (Department of Homeland Security)	$826,815	0.3%	Rank history: #59 in FY2022, #56 in FY2023, #25 in FY2024 and #57 in FY2025; up 9 since FY2020.
56	N.k. Bhandari, Architecture & Engineering, P.C. Top agencies HHS (Department of Health and Human Services) GSA (General Services Administration)	$823,527	0.3%	Rank history: #73 in FY2022, #25 in FY2023, #14 in FY2024 and #15 in FY2025; unchanged since FY2020.
57	Alares LLC Top agencies GSA (General Services Administration) DHS (Department of Homeland Security)	$821,578	0.3%	Rank history: #43 in FY2022, not on the FY2023 list, #52 in FY2024 and not on the FY2025 list; up 16 since FY2020.
58	KAL Architects, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) GSA (General Services Administration)	$818,351	0.3%	Rank history: not on the FY2022–FY2023 lists, #76 in FY2024 and #74 in FY2025; new, not ranked in FY2020.
59	Wold Architects Incorporated Top agencies GSA (General Services Administration) SSA (Social Security Administration)	$791,484	0.3%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; up 11 since FY2020.
60	Engineering Design Management P.C. Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts)	$775,061	0.2%	Rank history: #76 in FY2022, #80 in FY2023, #83 in FY2024 and not on the FY2025 list; down 16 since FY2020.
61	KMA Architecture & Engineering Top agencies GSA (General Services Administration) DOJ (Department of Justice)	$739,611	0.2%	Rank history: not on the FY2022 list, #96 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
62	Mno-Bmadsen Through Seven Generations Architecture & Engineering LLC Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$734,961	0.2%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 80 since FY2020.
63	Metro CD Engineering, LLC Top agencies GSA (General Services Administration) DHS (Department of Homeland Security)	$663,218	0.2%	Rank history: #81 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
64	F2G A & E Joint Venture Top agencies GSA (General Services Administration)	$645,570	0.2%	Rank history: not on the FY2022–FY2024 lists and #71 in FY2025; up 29 since FY2020.
65	Engenium Group L.L.C. Top agencies DOJ (Department of Justice)	$641,438	0.2%	Rank history: #77 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 45 since FY2020.
66	Elevar Design Group Inc. Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) AOUSC (Administrative Office of the U.S. Courts)	$637,299	0.2%	Rank history: #67 in FY2022, #50 in FY2023, #69 in FY2024 and #68 in FY2025; down 26 since FY2020.
67	Steven Kahle Architects, Inc. Top agencies GSA (General Services Administration) HHS (Department of Health and Human Services)	$609,849	0.2%	Rank history: #40 in FY2022, #97 in FY2023, #58 in FY2024 and #99 in FY2025; up 53 since FY2020.
68	K2A, LLP Top agencies GSA (General Services Administration)	$605,179	0.2%	Rank history: #45 in FY2022, #82 in FY2023, #59 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
69	The Engineering Partners Inc. Top agencies Navy (Department of the Navy)	$590,967	0.2%	Rank history: not on the FY2022–FY2025 lists; down 42 since FY2020.
70	Setty & Associates International PLLC Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs)	$564,861	0.2%	Rank history: #26 in FY2022, #32 in FY2023, #29 in FY2024 and not on the FY2025 list; up 127 since FY2020.
71	Studio Petretti Architecture LLC Top agencies GSA (General Services Administration)	$537,819	0.2%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
72	Designlab Architects Inc. Top agencies GSA (General Services Administration)	$532,728	0.2%	Rank history: not on the FY2022–FY2025 lists; down 40 since FY2020.
73	Kyowa Technologies Co.,Ltd. Top agencies Navy (Department of the Navy)	$518,094	0.2%	Rank history: not on the FY2022–FY2023 lists, #68 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
74	Peak Resource Conservation Inc. Top agencies GSA (General Services Administration)	$517,417	0.2%	Rank history: #32 in FY2022, not on the FY2023 list, #81 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
75	Prime AE Group, Inc. 2 awardees Top agencies Army (Department of the Army)	$503,891	0.2%	Rank history: not on the FY2022–FY2023 lists, #94 in FY2024 and not on the FY2025 list; up 20 since FY2020.
76	Imec Group, LLC Top agencies DOL (Department of Labor)	$503,815	0.2%	Rank history: not on the FY2022 list, #52 in FY2023, #55 in FY2024 and not on the FY2025 list; up 38 since FY2020.
77	Colby Co LLC Top agencies GSA (General Services Administration) DHS (Department of Homeland Security)	$488,064	0.2%	Rank history: #52 in FY2022, not on the FY2023 list, #86 in FY2024 and #62 in FY2025; down 3 since FY2020.
78	Drive Construction Inc. Top agencies DHS (Department of Homeland Security)	$484,575	0.2%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
79	Toland Mizell Molnar LLC Top agencies VA (Department of Veterans Affairs)	$475,340	0.2%	Rank history: not on the FY2022–FY2024 lists and #70 in FY2025; up 4 since FY2020.
80	AFG Group Inc. Top agencies GSA (General Services Administration)	$454,385	0.1%	Rank history: not on the FY2022–FY2025 lists; up 110 since FY2020.
81	Hill International, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$454,370	0.1%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
82	Otak, Inc. Top agencies USDA (Department of Agriculture)	$446,097	0.1%	Rank history: not on the FY2022 list, #100 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
83	Iveco SUD-West Nutzfahrzeuge GMBH Through Ati, Inc. Top agencies HHS (Department of Health and Human Services)	$445,336	0.1%	Rank history: #69 in FY2022, #85 in FY2023 and not on the FY2024–FY2025 lists; down 46 since FY2020.
84	Baxter Hodell Donnelly Preston Inc. Top agencies GSA (General Services Administration)	$432,156	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Peterson Engineering LLC Top agencies USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$421,009	0.1%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
86	Appledore Marine - Ch2M JV Top agencies Navy (Department of the Navy)	$418,664	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	Global Engineering Solutions, Inc. Top agencies GSA (General Services Administration)	$417,638	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	KOO LLC Top agencies GSA (General Services Administration) SSA (Social Security Administration) DOJ (Department of Justice)	$408,941	0.1%	Rank history: #51 in FY2022, #54 in FY2023, #50 in FY2024 and #98 in FY2025; up 13 since FY2020.
89	Walter P Moore & Associates Inc. Top agencies GSA (General Services Administration)	$394,600	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
90	ECI / Hyer, Inc. Top agencies DHS (Department of Homeland Security) GSA (General Services Administration)	$390,854	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Perspectus Architecture LLC Top agencies GSA (General Services Administration) EEOC (Equal Employment Opportunity Commission) AOUSC (Administrative Office of the U.S. Courts)	$350,304	0.1%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
92	Interactive Resources, Inc. Top agencies GSA (General Services Administration)	$344,826	0.1%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
93	Dowl, LLC Top agencies DOI (Department of the Interior)	$323,849	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	Joint Venture Alma C.i.s. Top agencies DOS (Department of State)	$316,622	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Pdg, Inc. Top agencies GSA (General Services Administration) Army (Department of the Army) AOUSC (Administrative Office of the U.S. Courts)	$316,397	0.1%	Rank history: not on the FY2022–FY2025 lists; up 62 since FY2020.
96	Seneca Global Services LLC Top agencies Army (Department of the Army)	$316,278	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Amalgamated Services, Inc. Top agencies DHS (Department of Homeland Security)	$312,362	0.1%	Rank history: not on the FY2022–FY2025 lists; up 80 since FY2020.
98	Andrea Steele Architecture, P.C. Top agencies NASA (National Aeronautics and Space Administration)	$303,044	0.1%	Rank history: not on the FY2022–FY2025 lists; up 48 since FY2020.
99	Architura Corporation Top agencies GSA (General Services Administration) DODEA (Department of Defense Education Activity) SSA (Social Security Administration)	$295,585	0.1%	Rank history: not on the FY2022–FY2025 lists; up 38 since FY2020.
100	Baysinger-Bric JV Top agencies GSA (General Services Administration) Army (Department of the Army) DFAS (Defense Finance and Accounting Service)	$294,669	0.1%	Rank history: #42 in FY2022, #87 in FY2023, #44 in FY2024 and #69 in FY2025; down 34 since FY2020.

Show 75 more

100 of 219 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 $312 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. 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 FY2021?

1. B.l. Harbert Holdings, L.L.C. ($61.4M), 2. WHR Architects, Inc. ($37M), 3. Parsons Corporation ($27.5M), 4. Krueck & Sexton Architects, Ltd ($16M), 5. AECOM ($9.14M), 6. Trane U.S. Inc. ($8.19M), 7. Pernix Group, Inc. ($7.87M), 8. Desbuild Incorporated ($7.19M), 9. Chickasaw Defense Logistics, LLC ($6.37M), 10. Smithgroup Companies, Inc. ($5.5M).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login