Top 100 Contractors in PSC Y1AA: Construction of Office Buildings, FY2023

Name: Top 100 Contractors in PSC Y1AA: Construction of Office Buildings, FY2023
Creator: GovTribe

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

The top 10 won 56% of FY2023 PSC Y1AA contract dollars

Contract obligations: $2,034,518,337 Net of deobligations, by contracts coded PSC Y1AA
Contractors: 428 Parent companies with an obligation
Largest contractor: Brasfield & Gorrie LLC $607 million, 28.3% 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	Brasfield & Gorrie LLC Top agencies DOJ (Department of Justice) GSA (General Services Administration)	$606,814,804	28.3%	Rank history: #8 in FY2021, #8 in FY2022, #32 in FY2024 and #17 in FY2025; up 7 since FY2022.
2	Pernix International, LLC Top agencies DOS (Department of State)	$249,524,304	11.6%	Rank history: #1 in FY2021, not on the FY2022 list, not on the FY2024 list and #71 in FY2025; up 187 since FY2022.
3	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies DOS (Department of State) GSA (General Services Administration)	$68,155,068	3.2%	Rank history: #20 in FY2021, #2 in FY2022, #46 in FY2024 and not on the FY2025 list; down 1 since FY2022.
4	Arkel International, L.L.C. Top agencies DOS (Department of State)	$52,141,275	2.4%	Rank history: #19 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; up 67 since FY2022.
5	SKE Support Services GMBH Through Sicra ILE De France Top agencies DOS (Department of State)	$49,578,837	2.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
6	The Walsh Group Through Archer Western Federal JV Top agencies Navy (Department of the Navy)	$44,283,754	2.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
7	Ids International Government Services LLC 2 awardees Top agencies DOS (Department of State)	$38,666,512	1.8%	Rank history: not on the FY2021 list, #9 in FY2022, #98 in FY2024 and not on the FY2025 list; up 2 since FY2022.
8	Hensel Phelps - Shimizu JV 2 awardees, including Hensel Phelps Construction Co Top agencies Army (Department of the Army)	$35,487,059	1.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
9	Olgoonik Federal LLC 3 awardees, including Olgoonik Logistics, LLC and Olgoonik Specialty Contractors LLC Top agencies DOS (Department of State) Army (Department of the Army)	$25,174,027	1.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #8 in FY2025; new.
10	Es Global Inc. Top agencies DOS (Department of State)	$24,578,206	1.1%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2024 and #38 in FY2025; new.
11	Tuckman-Barbee Construction Co., Inc. Top agencies Navy (Department of the Navy)	$24,424,647	1.1%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; up 70 since FY2022.
12	Nve, Inc. Top agencies DOS (Department of State)	$23,634,403	1.1%	Rank history: #21 in FY2021, #12 in FY2022, #78 in FY2024 and #10 in FY2025; unchanged since FY2022.
13	PEM Construction, LLC Top agencies Army (Department of the Army)	$22,948,950	1.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
14	Signature Renovations LLC Top agencies WHS (DOD Washington Headquarters Service) DOI (Department of the Interior) Navy (Department of the Navy)	$20,335,603	0.9%	Rank history: not on the FY2021 list, #70 in FY2022, #54 in FY2024 and #21 in FY2025; up 56 since FY2022.
15	JX Holdings Inc. Through Nippo Corporation Top agencies Army (Department of the Army)	$19,477,446	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
16	Mtnt Intelligence Solutions, LLC Top agencies DOS (Department of State)	$18,344,739	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 191 since FY2022.
17	Bering Straits Native Corporation 2 awardees, including Stampede Ventures, Inc. and Arcticom, LLC Top agencies Army (Department of the Army) DOS (Department of State)	$18,127,430	0.8%	Rank history: not on the FY2021 list, #17 in FY2022, #65 in FY2024 and #19 in FY2025; unchanged since FY2022.
18	Cherokee Nation Through Cherokee CRC LLC Top agencies WHS (DOD Washington Headquarters Service)	$17,916,504	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 110 since FY2022.
19	Kcorp Reliance Company, Inc. Top agencies DHS (Department of Homeland Security)	$17,893,184	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	VRD Contracting Inc. Top agencies USAF (Department of the Air Force)	$17,542,000	0.8%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #11 in FY2025; new.
21	Structsure Projects Inc. Top agencies DOT (Department of Transportation)	$17,274,518	0.8%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2024 and not on the FY2025 list; new.
22	Techni-Con, Inc. Top agencies Navy (Department of the Navy)	$16,250,000	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Amentum Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$15,202,303	0.7%	Rank history: #26 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 221 since FY2022.
24	Hana Technologies Construction, LLC Top agencies DOS (Department of State)	$14,790,185	0.7%	Rank history: not on the FY2021 list, #57 in FY2022, #30 in FY2024 and #53 in FY2025; up 33 since FY2022.
25	Pernix Group, Inc. Top agencies DOS (Department of State)	$14,304,504	0.7%	Rank history: #48 in FY2021, #21 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
26	Desbuild Incorporated Top agencies DOS (Department of State)	$13,164,583	0.6%	Rank history: #35 in FY2021, #6 in FY2022, #15 in FY2024 and #44 in FY2025; down 20 since FY2022.
27	Mcw-Tmg1 LLC Top agencies DHS (Department of Homeland Security)	$13,065,304	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
28	Downrange Operations and Training LLC Top agencies DOS (Department of State)	$11,750,349	0.5%	Rank history: #81 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
29	Caddell Construction Co., Inc. Through Caddell Construction Co. (De), LLC Top agencies DOS (Department of State)	$11,745,688	0.5%	Rank history: #5 in FY2021, #1 in FY2022, #17 in FY2024 and not on the FY2025 list; down 28 since FY2022.
30	Cornerstone Construction Services, LLC Top agencies DOT (Department of Transportation) DOI (Department of the Interior)	$11,340,571	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
31	Alaska Native Government Services LLC Through Copper River Infrastructure Services LLC Top agencies DOS (Department of State)	$11,012,981	0.5%	Rank history: #65 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 325 since FY2022.
32	DB Netz AG Regionalnetz Oberpfalz Top agencies Army (Department of the Army)	$10,920,414	0.5%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2024 and #94 in FY2025; new.
33	Tidewater, Inc. Top agencies DOS (Department of State) Navy (Department of the Navy)	$10,860,191	0.5%	Rank history: #80 in FY2021, #19 in FY2022, #34 in FY2024 and not on the FY2025 list; down 14 since FY2022.
34	DSL Builders LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$10,443,630	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	Framaco International Inc. Top agencies DOS (Department of State)	$10,402,472	0.5%	Rank history: #18 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 173 since FY2022.
36	Enviro-Management & Research, Inc. Top agencies DOS (Department of State)	$9,942,042	0.5%	Rank history: not on the FY2021 list, #77 in FY2022, not on the FY2024 list and #54 in FY2025; up 41 since FY2022.
37	Scientific Research Corporation Top agencies DOS (Department of State)	$9,877,816	0.5%	Rank history: #69 in FY2021, #24 in FY2022, #75 in FY2024 and not on the FY2025 list; down 13 since FY2022.
38	Fs3, Inc. Top agencies GSA (General Services Administration)	$9,737,805	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	R.T Contractor Corp. Top agencies VA (Department of Veterans Affairs)	$9,680,396	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	HSU Development, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$9,567,031	0.4%	Rank history: not on the FY2021 list, #39 in FY2022, #13 in FY2024 and #50 in FY2025; down 1 since FY2022.
41	UIC Nappairit LLC Top agencies DOI (Department of the Interior)	$9,358,160	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #87 in FY2025; new.
42	DCM Architecture & Engineering LLC Top agencies AOUSC (Administrative Office of the U.S. Courts)	$9,107,386	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
43	Talion Construction, LLC Top agencies VA (Department of Veterans Affairs)	$8,934,962	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	Veyka Insaat Mimarlik Muhendislik Sanayi IC VE Dis Ticaret Anonim Sirketi Top agencies DOS (Department of State)	$8,921,127	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
45	Benchmark Construction Services Inc. Top agencies GSA (General Services Administration)	$8,897,000	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Cherokee Nation Mechanical LLC Top agencies DOS (Department of State)	$8,399,105	0.4%	Rank history: #31 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 179 since FY2022.
47	RJS Construction Inc. 2 awardees Top agencies DOI (Department of the Interior)	$8,232,328	0.4%	Rank history: not on the FY2021 list, #54 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
48	QBS Inc. Top agencies USAF (Department of the Air Force)	$7,999,400	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
49	Ahtna, Incorporated 2 awardees, including Ahtna Global LLC Top agencies DOI (Department of the Interior) Army (Department of the Army) DOS (Department of State)	$7,871,823	0.4%	Rank history: not on the FY2021 list, #48 in FY2022, #96 in FY2024 and not on the FY2025 list; down 1 since FY2022.
50	Sea PAC Engineering Inc Top agencies DOS (Department of State)	$7,867,132	0.4%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2024 and #98 in FY2025; new.
51	Horizon Construction Group, LLC Through Horizon Construction Group\International Construction Services JV, LLC Top agencies DOS (Department of State)	$7,810,543	0.4%	Rank history: #87 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
52	The Whiting-Turner Contracting Company Top agencies GSA (General Services Administration) Navy (Department of the Navy) AOUSC (Administrative Office of the U.S. Courts)	$7,718,758	0.4%	Rank history: #6 in FY2021, #44 in FY2022, #85 in FY2024 and not on the FY2025 list; down 8 since FY2022.
53	Paragon Professional Services LLC Top agencies DOS (Department of State)	$7,711,173	0.4%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2024 and not on the FY2025 list; up 202 since FY2022.
54	Federal Contracting Inc. Top agencies Army (Department of the Army)	$7,365,428	0.3%	Rank history: #23 in FY2021, #99 in FY2022 and not on the FY2024–FY2025 lists; up 45 since FY2022.
55	Mckenzie Construction & Site Development LLC 2 awardees Top agencies DOI (Department of the Interior) Treasury (Department of the Treasury)	$6,831,967	0.3%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2024 and not on the FY2025 list; up 71 since FY2022.
56	Bhate Environmental Associates, Inc. Top agencies USAF (Department of the Air Force)	$6,486,860	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	Dare-Case Contracting Services LLC Top agencies USDA (Department of Agriculture)	$6,356,787	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	OAC Action Construction Corp. Top agencies DOI (Department of the Interior) USAF (Department of the Air Force)	$6,239,864	0.3%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #66 in FY2025; new.
59	Cheroenhaka Nottoway Enterprises, LLC Top agencies DOS (Department of State)	$6,202,857	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
60	Tetra Tech, Inc. Through Pro-Telligent, LLC Top agencies DOS (Department of State)	$6,060,398	0.3%	Rank history: #34 in FY2021, #75 in FY2022, #35 in FY2024 and not on the FY2025 list; up 15 since FY2022.
61	Semper TEK Inc Top agencies Army (Department of the Army)	$5,998,674	0.3%	Rank history: not on the FY2021 list, #40 in FY2022, not on the FY2024 list and #90 in FY2025; down 21 since FY2022.
62	Reilly Construction Inc. Top agencies DOI (Department of the Interior)	$5,707,121	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 47 since FY2022.
63	G-W Management Services, LLC Top agencies Navy (Department of the Navy)	$5,207,000	0.2%	Rank history: #76 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; down 45 since FY2022.
64	Pontiac Drywall Systems Inc. Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$5,143,524	0.2%	Rank history: #27 in FY2021, #76 in FY2022, #90 in FY2024 and not on the FY2025 list; up 12 since FY2022.
65	The Chenega Corporation Through Chenega Worldwide Support, LLC Top agencies DOS (Department of State)	$5,026,444	0.2%	Rank history: #37 in FY2021, #31 in FY2022 and not on the FY2024–FY2025 lists; down 34 since FY2022.
66	Southeastern Industrial Barlovento JV Top agencies USAF (Department of the Air Force)	$4,996,483	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	RQ Construction, LLC Top agencies Navy (Department of the Navy)	$4,829,328	0.2%	Rank history: #12 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 113 since FY2022.
68	EXP U.S. Services Inc. Through EXP Federal Inc. Top agencies DOS (Department of State)	$4,630,255	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 148 since FY2022.
69	John C. Grimberg Co., Inc. Top agencies Army (Department of the Army)	$4,482,850	0.2%	Rank history: not on the FY2021 list, #13 in FY2022, not on the FY2024 list and #72 in FY2025; down 56 since FY2022.
70	Proyectos Civiles S Y M Limitada Top agencies DOS (Department of State)	$4,345,152	0.2%	Rank history: not on the FY2021 list, #59 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
71	Venesco LLC Top agencies DOS (Department of State)	$4,175,251	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
72	Pundir-Spectrum JV2 Top agencies USAF (Department of the Air Force)	$4,122,573	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Belt Built Contracting, LLC Top agencies Navy (Department of the Navy) DOJ (Department of Justice)	$3,971,893	0.2%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2024 and not on the FY2025 list; up 113 since FY2022.
74	Marrero, Couvillon & Associates, L.L.C. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$3,934,343	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #47 in FY2025; up 94 since FY2022.
75	Mascaro Construction Co LP Top agencies GSA (General Services Administration)	$3,888,848	0.2%	Rank history: #90 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; down 23 since FY2022.
76	KEE Solutions LLC Top agencies DOI (Department of the Interior)	$3,831,970	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
77	Dpr-Rq Construction, LLC Top agencies Navy (Department of the Navy)	$3,613,786	0.2%	Rank history: #17 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 43 since FY2022.
78	General Mechanical Corporation Top agencies Navy (Department of the Navy)	$3,529,169	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	Mccarthy Hitt - Next NGA West Joint Venture Top agencies Army (Department of the Army)	$3,387,052	0.2%	Rank history: #9 in FY2021, #7 in FY2022, not on the FY2024 list and #14 in FY2025; down 72 since FY2022.
80	Exelon Corporation Through Potomac Electric Power Co Top agencies DOS (Department of State)	$3,323,717	0.2%	Rank history: #78 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
81	RB Construction Company Top agencies DOI (Department of the Interior)	$3,279,693	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 53 since FY2022.
82	Spectrum Electrical Services, Inc. Top agencies DOS (Department of State)	$3,235,221	0.2%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and not on the FY2025 list; new.
83	MFS Construction LLC Top agencies DOI (Department of the Interior)	$3,217,451	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #97 in FY2025; up 187 since FY2022.
84	Classic Site Solutions Inc. Top agencies DOI (Department of the Interior)	$3,028,838	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	TB Inc Top agencies DOI (Department of the Interior)	$2,939,839	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	DOT Construction, Inc. Top agencies DOI (Department of the Interior)	$2,881,358	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #29 in FY2025; new.
87	Global Engineering Services Inc. Top agencies DOI (Department of the Interior)	$2,855,627	0.1%	Rank history: #57 in FY2021, #83 in FY2022, #59 in FY2024 and not on the FY2025 list; down 4 since FY2022.
88	Capital Brand Group LLC Top agencies Navy (Department of the Navy)	$2,762,805	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #93 in FY2025; up 99 since FY2022.
89	Contrack International Inc. Through Contrack Watts Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$2,649,901	0.1%	Rank history: #14 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 52 since FY2022.
90	Wright Bros LLC Top agencies DOI (Department of the Interior) USAF (Department of the Air Force)	$2,645,736	0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and #37 in FY2025; up 178 since FY2022.
91	Roofing Resources Inc. Top agencies DOS (Department of State)	$2,604,886	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #76 in FY2025; new.
92	Trison Construction Inc. Top agencies DOS (Department of State)	$2,517,761	0.1%	Rank history: not on the FY2021 list, #30 in FY2022, #61 in FY2024 and #55 in FY2025; down 62 since FY2022.
93	Puyenpa Construction, LLC Top agencies HHS (Department of Health and Human Services)	$2,513,329	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Ryan Companies US Inc. Top agencies GSA (General Services Administration)	$2,495,815	0.1%	Rank history: #11 in FY2021, #29 in FY2022 and not on the FY2024–FY2025 lists; down 65 since FY2022.
95	Sedona Enterprises, Inc. Top agencies Army (Department of the Army)	$2,427,156	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	Ewing Industrial Services LLC Top agencies DOI (Department of the Interior)	$2,333,743	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Okie LLC Top agencies DOI (Department of the Interior)	$2,304,595	0.1%	Rank history: not on the FY2021 list, #88 in FY2022, #82 in FY2024 and not on the FY2025 list; down 9 since FY2022.
98	Estudios Edificaciones E Interventorias En Ingenieria Eeii S A S Top agencies DOS (Department of State)	$2,259,182	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #84 in FY2025; up 23 since FY2022.
99	Tuvli LLC Top agencies DOS (Department of State)	$2,249,895	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #79 in FY2025; up 13 since FY2022.
100	RMA Arabia Ltd. Top agencies DOS (Department of State)	$2,236,329	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 428 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 $2.14 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 PSC Y1AA contractors in FY2023?

1. Brasfield & Gorrie LLC ($607M), 2. Pernix International, LLC ($250M), 3. B.l. Harbert Holdings, L.L.C. ($68.2M), 4. Arkel International, L.L.C. ($52.1M), 5. SKE Support Services GMBH ($49.6M), 6. The Walsh Group ($44.3M), 7. Ids International Government Services LLC ($38.7M), 8. Hensel Phelps - Shimizu JV ($35.5M), 9. Olgoonik Federal LLC ($25.2M), 10. Es Global Inc. ($24.6M).

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