Top 100 Contractors in PSC C1JZ: Architect and Engineering – Construction: Miscellaneous Buildings, FY2023

Name: Top 100 Contractors in PSC C1JZ: Architect and Engineering – Construction: Miscellaneous Buildings, FY2023
Creator: GovTribe

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

The top 10 won 57% of FY2023 PSC C1JZ contract dollars

Contract obligations: $155,526,167 Net of deobligations, by contracts coded PSC C1JZ
Contractors: 141 Parent companies with an obligation
Largest contractor: The Whiting-Turner Contracting Company $25.8 million, 15.9% 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	The Whiting-Turner Contracting Company Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$25,790,296	15.9%	Rank history: #9 in FY2021, not on the FY2022 list, #52 in FY2024 and not on the FY2025 list; returned.
2	Michael Baker International & Huitt-Zollars JV Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$17,061,640	10.5%	Rank history: #1 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
3	Burns & Mcdonnell, Inc. 2 awardees, including Burns & Mcdonnell Engineering Company, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$11,610,095	7.2%	Rank history: #5 in FY2021, #7 in FY2022, #16 in FY2024 and #62 in FY2025; up 4 since FY2022.
4	Merrick Freese & Nichols JV Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$9,356,823	5.8%	Rank history: #17 in FY2021, #8 in FY2022, not on the FY2024 list and #49 in FY2025; up 4 since FY2022.
5	Kisby-Lees Mechanical LLC Top agencies DOT (Department of Transportation)	$5,611,322	3.5%	Rank history: not on the FY2021 list, #61 in FY2022, #6 in FY2024 and #70 in FY2025; up 56 since FY2022.
6	Mead & Hunt Inc. Through Mason & Hanger + Mead & Hunt Joint Venture Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$5,276,511	3.3%	Rank history: #35 in FY2021, #60 in FY2022, #11 in FY2024 and not on the FY2025 list; up 54 since FY2022.
7	AECOM 3 awardees, including AECOM Smith Carter Joint Venture, AECOM Technical Services, Inc. and AECOM Services, Inc. Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$4,441,111	2.7%	Rank history: #8 in FY2021, #4 in FY2022, #13 in FY2024 and #4 in FY2025; down 3 since FY2022.
8	Tehama-Llc and HDR Joint Venture LP Top agencies USAF (Department of the Air Force)	$4,416,688	2.7%	Rank history: #3 in FY2021, #2 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
9	The Johnson-Mcadams Firm, P.a. Top agencies USAF (Department of the Air Force)	$4,255,249	2.6%	Rank history: not on the FY2021 list, #77 in FY2022, #88 in FY2024 and #35 in FY2025; up 68 since FY2022.
10	Dj's Mechanical, Inc. Top agencies DOT (Department of Transportation)	$4,146,470	2.6%	Rank history: #37 in FY2021, #73 in FY2022, #8 in FY2024 and #45 in FY2025; up 63 since FY2022.
11	Red Bison Services, LLC Top agencies Army (Department of the Army)	$3,773,277	2.3%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #100 in FY2025; new.
12	A and M Engineering & Environmental Services Inc Top agencies Army (Department of the Army)	$3,118,588	1.9%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2024 and #8 in FY2025; new.
13	Kswa - AEI JV LLC Top agencies Army (Department of the Army)	$2,798,370	1.7%	Rank history: not on the FY2021 list, #54 in FY2022, #14 in FY2024 and not on the FY2025 list; up 41 since FY2022.
14	Jacobs Engineering Group Inc. 3 awardees, including Jacobs Government Services Company and Ch2M Hill, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,637,199	1.6%	Rank history: #81 in FY2021, #14 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
15	Stantec Inc. Through Stantec Consulting Services Inc. Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command)	$2,315,323	1.4%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2024 and #12 in FY2025; new.
16	C.h. Guernsey & Company Top agencies Army (Department of the Army) DOT (Department of Transportation)	$2,269,652	1.4%	Rank history: #6 in FY2021, #11 in FY2022, #43 in FY2024 and #43 in FY2025; down 5 since FY2022.
17	Walsh Federal LLC Top agencies USSOCOM (United States Special Operations Command)	$2,250,031	1.4%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2024 and #19 in FY2025; new.
18	Insituform Technologies LLC Through Corrpro Companies, Inc. Top agencies Army (Department of the Army)	$2,119,983	1.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
19	Teehee Engineering Inc. Top agencies Navy (Department of the Navy)	$2,050,304	1.3%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2024 and not on the FY2025 list; new.
20	S&B Christ Consulting, LLC Top agencies DOI (Department of the Interior)	$2,034,068	1.3%	Rank history: #14 in FY2021, #35 in FY2022, #37 in FY2024 and not on the FY2025 list; up 15 since FY2022.
21	The Oak Group, Inc. Top agencies DOT (Department of Transportation)	$1,978,714	1.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
22	Ashford Leebcor Enterprises Iii, LLC Top agencies Army (Department of the Army)	$1,743,203	1.1%	Rank history: not on the FY2021 list, #24 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
23	Kenall Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,716,135	1.1%	Rank history: #95 in FY2021, #59 in FY2022, #62 in FY2024 and #51 in FY2025; up 36 since FY2022.
24	Mosaic Architecture, PC Top agencies USDA (Department of Agriculture)	$1,673,036	1.0%	Rank history: #27 in FY2021, #71 in FY2022, #56 in FY2024 and not on the FY2025 list; up 47 since FY2022.
25	Manolis Painting Inc. Top agencies DOE (Department of Energy)	$1,665,950	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
26	Eastern Construction & Electric Inc. Top agencies DOT (Department of Transportation)	$1,654,160	1.0%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2024 and #52 in FY2025; new.
27	Baker-Stanley-Cardno JV Top agencies USAF (Department of the Air Force)	$1,494,781	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
28	FFE - Heapy JV, LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$1,489,389	0.9%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #78 in FY2025; new.
29	Etegra-Lwpb Jv1, LLC Top agencies USAF (Department of the Air Force)	$1,405,653	0.9%	Rank history: #65 in FY2021, #82 in FY2022, #31 in FY2024 and #21 in FY2025; up 53 since FY2022.
30	Atriax / Zapata JV LLC Top agencies Army (Department of the Army)	$1,326,830	0.8%	Rank history: #24 in FY2021, #17 in FY2022, #41 in FY2024 and #74 in FY2025; down 13 since FY2022.
31	Corrpro Companies Inc. Top agencies Army (Department of the Army)	$1,311,706	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
32	MBF Architects, P.a. Top agencies Army (Department of the Army) USSOCOM (United States Special Operations Command)	$1,128,069	0.7%	Rank history: #20 in FY2021, #32 in FY2022, #50 in FY2024 and #59 in FY2025; unchanged since FY2022.
33	Colby Co LLC Top agencies Navy (Department of the Navy)	$1,083,223	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
34	Frankfurt-Short-Bruza Associates PC Top agencies DOT (Department of Transportation)	$1,016,260	0.6%	Rank history: not on the FY2021 list, #27 in FY2022, #73 in FY2024 and not on the FY2025 list; down 7 since FY2022.
35	Alesia Architecture PC Top agencies VA (Department of Veterans Affairs)	$972,845	0.6%	Rank history: #73 in FY2021, #21 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
36	Andrew C Chen Top agencies Navy (Department of the Navy)	$960,373	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	Sa.studio, PLLC Top agencies DOT (Department of Transportation)	$867,346	0.5%	Rank history: not on the FY2021 list, #33 in FY2022, #15 in FY2024 and not on the FY2025 list; down 4 since FY2022.
38	KHA Civil Engineers, Inc. Top agencies USAF (Department of the Air Force)	$836,479	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Halff Associates, Inc. 2 awardees Top agencies USAF (Department of the Air Force)	$804,302	0.5%	Rank history: #43 in FY2021, #1 in FY2022 and not on the FY2024–FY2025 lists; down 38 since FY2022.
40	Benham-Stanley, LLC Top agencies Army (Department of the Army)	$678,899	0.4%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2024 and #54 in FY2025; new.
41	Clark Nexsen Inc. Top agencies Army (Department of the Army)	$669,713	0.4%	Rank history: #4 in FY2021, #80 in FY2022, #59 in FY2024 and #60 in FY2025; up 39 since FY2022.
42	Msmm Huitt-Zollars A Joint Venture LLC Top agencies USAF (Department of the Air Force)	$619,749	0.4%	Rank history: not on the FY2021 list, #36 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
43	Schmidt-Prime Group, LLC Top agencies Navy (Department of the Navy)	$613,944	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	MB Markland Contracting Co Top agencies DOT (Department of Transportation)	$601,846	0.4%	Rank history: not on the FY2021 list, #64 in FY2022, #48 in FY2024 and #69 in FY2025; up 20 since FY2022.
45	Cems Engineering Inc. Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army)	$586,175	0.4%	Rank history: #75 in FY2021, #41 in FY2022, #23 in FY2024 and #58 in FY2025; down 4 since FY2022.
46	Heffernan Holland Morgan Architecture, P.a. Top agencies USAF (Department of the Air Force)	$536,788	0.3%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2024 and not on the FY2025 list; new.
47	Oliver Communications Group Inc. Top agencies DOT (Department of Transportation)	$505,942	0.3%	Rank history: #56 in FY2021, #95 in FY2022, #83 in FY2024 and not on the FY2025 list; up 48 since FY2022.
48	Raymond Pond Full Service Solutions JV LLC Top agencies Army (Department of the Army)	$499,895	0.3%	Rank history: not on the FY2021 list, #19 in FY2022, not on the FY2024 list and #67 in FY2025; down 29 since FY2022.
49	The Chenega Corporation 2 awardees, including Native Technology Solutions, LLC Top agencies USSOCOM (United States Special Operations Command)	$480,795	0.3%	Rank history: not on the FY2021 list, #6 in FY2022 and not on the FY2024–FY2025 lists; down 43 since FY2022.
50	Viridian Architectural Design Inc. Top agencies VA (Department of Veterans Affairs)	$461,179	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
51	Constructora Andrade Asociados S.c.c Top agencies DOS (Department of State)	$450,589	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
52	Consultec - Consultores Associados, LDA Top agencies USAID (US Agency for International Development)	$427,381	0.3%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #42 in FY2025; new.
53	K2 Contracting Group LLC Top agencies DOT (Department of Transportation)	$423,497	0.3%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2024 and #96 in FY2025; new.
54	Bailey Edward Design, Inc. Top agencies USDA (Department of Agriculture)	$399,878	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	Peterson Engineering LLC Top agencies USAF (Department of the Air Force)	$392,546	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	Ocean Construction LLC Top agencies DOT (Department of Transportation)	$368,150	0.2%	Rank history: #10 in FY2021, #78 in FY2022, #51 in FY2024 and not on the FY2025 list; up 22 since FY2022.
57	Architura Corporation Top agencies VA (Department of Veterans Affairs)	$350,531	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Yaeger Architecture Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$327,571	0.2%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2024 and #50 in FY2025; new.
59	Ameristar Contracting Group, Inc. Top agencies DOT (Department of Transportation)	$324,939	0.2%	Rank history: not on the FY2021 list, #40 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
60	Kenneth Hahn Architects Inc. Top agencies USAF (Department of the Air Force)	$312,225	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	Tigua Construction Services, Inc. Top agencies DHS (Department of Homeland Security)	$310,400	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Tecnica Engenheiros Consultores Lda. Top agencies USAID (US Agency for International Development)	$307,391	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Dj&A, P.C. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$259,975	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
64	Terra Site Constructors LLC Top agencies DOI (Department of the Interior)	$239,508	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Integrity Federal Services, Inc. Top agencies VA (Department of Veterans Affairs)	$238,182	0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
66	West Consultants Inc. Top agencies Army (Department of the Army)	$236,423	0.1%	Rank history: not on the FY2021 list, #52 in FY2022 and not on the FY2024–FY2025 lists; down 14 since FY2022.
67	Nelson Construction Co of LA Pointe Incorporated Top agencies DOI (Department of the Interior)	$235,577	0.1%	Rank history: not on the FY2021 list, #47 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
68	Original Asia Company Limited Top agencies DOS (Department of State)	$233,406	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	Modus Engineering Societa' A Responsabilita' Limitata Top agencies DOS (Department of State)	$228,463	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2024 and #82 in FY2025; new.
70	OEI - Etegra Joint Venture 1, LLC Top agencies USAF (Department of the Air Force)	$219,821	0.1%	Rank history: #30 in FY2021, #15 in FY2022, #98 in FY2024 and not on the FY2025 list; down 55 since FY2022.
71	Reid Middleton, Inc. Top agencies Navy (Department of the Navy)	$196,796	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
72	AJ Estructuras Sociedad Anonima De Capital Variable Top agencies DOS (Department of State)	$183,605	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	C2Rl Engineering, Inc. Top agencies USAF (Department of the Air Force)	$179,853	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Finkle-Williams, Inc. Top agencies USAF (Department of the Air Force)	$168,449	0.1%	Rank history: #42 in FY2021, not on the FY2022 list, #55 in FY2024 and not on the FY2025 list; returned.
75	Alberto Izzo & Partners S.R.L. Top agencies Navy (Department of the Navy)	$163,931	0.1%	Rank history: #90 in FY2021, not on the FY2022 list, #82 in FY2024 and #40 in FY2025; up 41 since FY2022.
76	EXP U.S. Services Inc. Through EXP Federal Inc. Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army)	$159,940	0.1%	Rank history: #39 in FY2021, #74 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
77	Bratslavsky Consulting Engineers, Inc. Top agencies USDA (Department of Agriculture)	$150,162	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
78	WSP E&I - Zapata Joint Venture Top agencies USAF (Department of the Air Force)	$139,442	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
79	Fiber Business Solutions Group Inc. Top agencies DOT (Department of Transportation)	$120,497	0.1%	Rank history: #11 in FY2021, #29 in FY2022, #84 in FY2024 and not on the FY2025 list; down 50 since FY2022.
80	HGM Associates, Inc. Top agencies USAF (Department of the Air Force)	$118,700	0.1%	Rank history: #96 in FY2021, #57 in FY2022, #67 in FY2024 and #32 in FY2025; down 23 since FY2022.
81	Ranco Construction Inc. Top agencies DOT (Department of Transportation)	$113,319	0.1%	Rank history: #19 in FY2021, #3 in FY2022 and not on the FY2024–FY2025 lists; down 78 since FY2022.
82	M.E. Group Inc. Through Branchpattern, Inc. Top agencies USAF (Department of the Air Force)	$110,223	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Fourfront Design Inc. Top agencies VA (Department of Veterans Affairs)	$107,403	0.1%	Rank history: #18 in FY2021, #85 in FY2022, #34 in FY2024 and not on the FY2025 list; up 2 since FY2022.
84	Anderson Engineering of Minnesota, LLC Top agencies VA (Department of Veterans Affairs)	$106,068	0.1%	Rank history: #87 in FY2021, #51 in FY2022, #21 in FY2024 and #75 in FY2025; down 33 since FY2022.
85	Oak Point Associates Top agencies Navy (Department of the Navy)	$104,170	0.1%	Rank history: not on the FY2021 list, #86 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
86	The Haskell Company Through Benham Design, LLC Top agencies USAF (Department of the Air Force) DOT (Department of Transportation)	$97,648	0.1%	Rank history: not on the FY2021 list, #22 in FY2022 and not on the FY2024–FY2025 lists; down 64 since FY2022.
87	Health, Education and Research Associates, Inc. Top agencies HHS (Department of Health and Human Services)	$96,296	0.1%	Rank history: #25 in FY2021, #30 in FY2022 and not on the FY2024–FY2025 lists; down 57 since FY2022.
88	Ewing Cole Inc. Top agencies EPA (Environmental Protection Agency)	$89,845	0.1%	Rank history: #62 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
89	The Bridge General Trading and Contracting Company W.L.L. Top agencies DOS (Department of State)	$88,073	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	K.f. Davis Engineering, Inc. Top agencies USDA (Department of Agriculture)	$83,370	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #93 in FY2025; new.
91	Arthur R Henry Inc. Top agencies DOT (Department of Transportation)	$74,477	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Strang Inc Top agencies USDA (Department of Agriculture)	$73,238	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Roofing Resources Inc. Top agencies DOS (Department of State)	$72,969	<0.1%	Rank history: not on the FY2021 list, #90 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
94	Foss Architecture & Interiors, Inc. Top agencies USAF (Department of the Air Force)	$69,998	<0.1%	Rank history: not on the FY2021 list, #87 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
95	Del Mar Environmental & Construction Services Inc. Top agencies Navy (Department of the Navy)	$69,273	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	Thomas Dean & Hoskins Inc. Top agencies USAF (Department of the Air Force)	$67,312	<0.1%	Rank history: not on the FY2021 list, #62 in FY2022, not on the FY2024 list and #88 in FY2025; down 34 since FY2022.
97	Argus Consulting, Inc. Top agencies Army (Department of the Army)	$60,603	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Lavastida Development Group, L.l.c Top agencies VA (Department of Veterans Affairs)	$57,319	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
99	ADC Engineering Inc. Top agencies USAF (Department of the Air Force)	$54,810	<0.1%	Rank history: not on the FY2021 list, #50 in FY2022 and not on the FY2024–FY2025 lists; down 49 since FY2022.
100	Wood Environment & Infrastructure Solutions Inc. Through WSP USA Environment & Infrastructure Inc. Top agencies USAF (Department of the Air Force)	$52,616	<0.1%	Rank history: not on the FY2021 list, #79 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.

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100 of 141 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 $162 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 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 C1JZ contractors in FY2023?

1. The Whiting-Turner Contracting Company ($25.8M), 2. Michael Baker International & Huitt-Zollars JV ($17.1M), 3. Burns & Mcdonnell, Inc. ($11.6M), 4. Merrick Freese & Nichols JV ($9.36M), 5. Kisby-Lees Mechanical LLC ($5.61M), 6. Mead & Hunt Inc. ($5.28M), 7. AECOM ($4.44M), 8. Tehama-Llc and HDR Joint Venture LP ($4.42M), 9. The Johnson-Mcadams Firm, P.a. ($4.26M), 10. Dj's Mechanical, Inc. ($4.15M).

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