Top 100 Contractors in NAICS 541310: Architectural Services, FY2024

Name: Top 100 Contractors in NAICS 541310: Architectural Services, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 28% of FY2024 NAICS 541310 contract dollars

Contract obligations: $964,443,221 Net of deobligations, by contracts coded NAICS 541310
Contractors: 579 Parent companies with an obligation
Largest contractor: WSP USA Solutions Inc. $72 million, 7.0% 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	WSP USA Solutions Inc. Top agencies Army (Department of the Army)	$72,033,840	7.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
2	Jacobs Government Services Company 5 awardees, including Jacobs Engineering Group Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOJ (Department of Justice)	$59,362,681	5.8%	Rank history: #76 in FY2021, #67 in FY2022, #8 in FY2023 and #1 in FY2025; up 6 since FY2023.
3	AECOM Technical Services, Inc. Top agencies USAID (US Agency for International Development) GSA (General Services Administration) DHS (Department of Homeland Security)	$38,975,409	3.8%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
4	LEO A. Daly LLC Top agencies VA (Department of Veterans Affairs)	$22,289,593	2.2%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
5	Dattner Architects DPC Top agencies GSA (General Services Administration) DOJ (Department of Justice) SSA (Social Security Administration)	$19,749,440	1.9%	Rank history: #41 in FY2021, not on the FY2022 list, #45 in FY2023 and #25 in FY2025; up 40 since FY2023.
6	AECOM 9 awardees, including Aecom-Baker Navfac Atlantic A-E Design JV, AECOM Services, LLC and URS Group Inc-Hartman Cox Architects LLP A Joint Venture Top agencies Navy (Department of the Navy) DOI (Department of the Interior) Army (Department of the Army)	$16,896,523	1.6%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023 and #13 in FY2025; down 3 since FY2023.
7	Smithgroup, Inc. 2 awardees Top agencies SSA (Social Security Administration) GSA (General Services Administration) Smithsonian (Smithsonian Institution)	$15,577,360	1.5%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
8	Michael Baker International, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$15,020,345	1.5%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
9	Smithgroup Companies, Inc. 2 awardees, including Smithgroup, Inc. Top agencies GSA (General Services Administration) SSA (Social Security Administration) NARA (National Archives and Records Administration)	$13,345,804	1.3%	Rank history: #4 in FY2021, #10 in FY2022, #29 in FY2023 and not on the FY2025 list; up 20 since FY2023.
10	RLF and Sherlock Smith and Adams JV Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$11,158,933	1.1%	Rank history: #5 in FY2021, #5 in FY2022, #59 in FY2023 and #50 in FY2025; up 49 since FY2023.
11	Black & Veatch - Zapata Joint Venture Top agencies USSOCOM (United States Special Operations Command)	$10,990,218	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	Woolpert-Rs&H LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DODEA (Department of Defense Education Activity)	$10,192,124	1.0%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023 and not on the FY2025 list; up 5 since FY2023.
13	Practice for Architecture Urbanism DPC Top agencies DOT (Department of Transportation)	$9,550,000	0.9%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; up 90 since FY2023.
14	Ewing Cole Inc. Top agencies Smithsonian (Smithsonian Institution)	$9,347,057	0.9%	Rank history: not on the FY2021 list, #25 in FY2022, #38 in FY2023 and #19 in FY2025; up 24 since FY2023.
15	Jacobs / Ewingcole, A Joint Venture Top agencies Navy (Department of the Navy)	$9,183,918	0.9%	Rank history: #1 in FY2021, #1 in FY2022, #20 in FY2023 and #69 in FY2025; up 5 since FY2023.
16	Quinn Evans Architects Inc. 2 awardees Top agencies DOI (Department of the Interior) National Gallery of Art Smithsonian (Smithsonian Institution)	$9,095,962	0.9%	Rank history: #32 in FY2021, #95 in FY2022, #80 in FY2023 and #17 in FY2025; up 64 since FY2023.
17	Lend Lease Corporation Ltd Through Lendlease (Us) Construction Inc. Top agencies Smithsonian (Smithsonian Institution)	$8,869,028	0.9%	Rank history: #6 in FY2021, #16 in FY2022, #31 in FY2023 and not on the FY2025 list; up 14 since FY2023.
18	Annum Architects, Inc. Top agencies Smithsonian (Smithsonian Institution) DOS (Department of State)	$8,503,814	0.8%	Rank history: #30 in FY2021, #89 in FY2022, #28 in FY2023 and not on the FY2025 list; up 10 since FY2023.
19	Scott Brownrigg Limited Top agencies Army (Department of the Army)	$8,481,762	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Krueck & Sexton Architects, Ltd Top agencies GSA (General Services Administration) DOS (Department of State) SSA (Social Security Administration)	$8,407,462	0.8%	Rank history: #3 in FY2021, #19 in FY2022, #15 in FY2023 and #42 in FY2025; down 5 since FY2023.
21	Tetra Tech, Inc. 6 awardees, including Tetra TECH / Mason & Hanger Joint Venture, WJA PLLC and Tetra TECH / Mead and Hunt Joint Venture Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) DOJ (Department of Justice)	$8,404,029	0.8%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and #10 in FY2025; up 6 since FY2023.
22	RMA Architects Inc. Top agencies Navy (Department of the Navy)	$8,392,574	0.8%	Rank history: not on the FY2021 list, #32 in FY2022, #22 in FY2023 and #11 in FY2025; unchanged since FY2023.
23	Hdr, Inc. 10 awardees, including HDR Engineering, Inc. and HDR Architecture, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$8,335,725	0.8%	Rank history: #12 in FY2021, #3 in FY2022, #9 in FY2023 and #15 in FY2025; down 14 since FY2023.
24	RDC JPA Architecture, L.L.L.P. Top agencies VA (Department of Veterans Affairs)	$8,218,386	0.8%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #30 in FY2025; up 29 since FY2023.
25	National Institute of Building Sciences Top agencies DOS (Department of State) Navy (Department of the Navy) USAF (Department of the Air Force)	$8,157,552	0.8%	Rank history: not on the FY2021 list, #44 in FY2022, #48 in FY2023 and #32 in FY2025; up 23 since FY2023.
26	Pond & Company Top agencies DOJ (Department of Justice) Army (Department of the Army) DOI (Department of the Interior)	$8,075,955	0.8%	Rank history: #85 in FY2021, #66 in FY2022, not on the FY2023 list and not on the FY2025 list; up 82 since FY2023.
27	Camp Dresser & Mckee Inc. 2 awardees, including CDM International Inc. Top agencies USAID (US Agency for International Development)	$8,000,000	0.8%	Rank history: not on the FY2021–FY2022 lists, #37 in FY2023 and not on the FY2025 list; up 10 since FY2023.
28	WSP - Moca Joint Venture Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$7,800,243	0.8%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and not on the FY2025 list; up 60 since FY2023.
29	Fathom Architecture, LLC Top agencies Navy (Department of the Navy)	$7,759,520	0.8%	Rank history: not on the FY2021 list, #33 in FY2022, #60 in FY2023 and #29 in FY2025; up 31 since FY2023.
30	AE Works Ltd 2 awardees Top agencies VA (Department of Veterans Affairs) AFRH (Armed Forces Retirement Home) HHS (Department of Health and Human Services)	$7,506,569	0.7%	Rank history: #44 in FY2021, #26 in FY2022, #40 in FY2023 and not on the FY2025 list; up 10 since FY2023.
31	Oei-Aecom Joint Venture Top agencies VA (Department of Veterans Affairs)	$7,476,409	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	Green Powered Technology LLC Top agencies USAID (US Agency for International Development)	$7,190,255	0.7%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023 and not on the FY2025 list; down 25 since FY2023.
33	North Arrow Inc Top agencies DOJ (Department of Justice) DOE (Department of Energy)	$7,067,409	0.7%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and not on the FY2025 list; up 10 since FY2023.
34	Andrew C Chen 2 awardees Top agencies Navy (Department of the Navy)	$6,916,309	0.7%	Rank history: #63 in FY2021, #49 in FY2022, #21 in FY2023 and #33 in FY2025; down 13 since FY2023.
35	Mtfa Architecture, P.L.L.C. Top agencies Navy (Department of the Navy) GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$6,487,572	0.6%	Rank history: #88 in FY2021, #75 in FY2022, #56 in FY2023 and #54 in FY2025; up 21 since FY2023.
36	Toland Mizell Molnar LLC Top agencies VA (Department of Veterans Affairs)	$6,444,980	0.6%	Rank history: #47 in FY2021, #60 in FY2022, #34 in FY2023 and not on the FY2025 list; down 2 since FY2023.
37	The Urban Collaborative, Llc: Master Planning, Urban Design, and Architecture Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$6,262,819	0.6%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and #64 in FY2025; up 60 since FY2023.
38	Guidon Design Inc. Top agencies VA (Department of Veterans Affairs)	$6,259,464	0.6%	Rank history: #43 in FY2021, #41 in FY2022, #68 in FY2023 and not on the FY2025 list; up 30 since FY2023.
39	Page Southerland Page, Inc. 2 awardees Top agencies VA (Department of Veterans Affairs) Smithsonian (Smithsonian Institution) DHS (Department of Homeland Security)	$5,708,579	0.6%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; up 261 since FY2023.
40	Alesia Architecture PC Top agencies VA (Department of Veterans Affairs)	$5,617,021	0.5%	Rank history: #67 in FY2021, #59 in FY2022, not on the FY2023 list and not on the FY2025 list; up 67 since FY2023.
41	Wiss Janney Elstner Associates Inc. 3 awardees Top agencies DOI (Department of the Interior) GSA (General Services Administration) DOS (Department of State)	$5,614,256	0.5%	Rank history: not on the FY2021 list, #28 in FY2022, #73 in FY2023 and #98 in FY2025; up 32 since FY2023.
42	KAL Architects, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$5,601,376	0.5%	Rank history: #96 in FY2021, #70 in FY2022, not on the FY2023 list and #84 in FY2025; up 158 since FY2023.
43	Anderson Hallas Architects, PC Top agencies DOI (Department of the Interior)	$5,591,752	0.5%	Rank history: #31 in FY2021, #29 in FY2022, #77 in FY2023 and #22 in FY2025; up 34 since FY2023.
44	Perez A Professional Corp Top agencies USAID (US Agency for International Development)	$5,300,000	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	DHM Design Corporation Top agencies DOI (Department of the Interior)	$5,192,453	0.5%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #41 in FY2025; up 49 since FY2023.
46	Pond-Woolpert, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$5,173,876	0.5%	Rank history: not on the FY2021 list, #36 in FY2022, not on the FY2023 list and #44 in FY2025; up 67 since FY2023.
47	Simpson Gumpertz & Heger Inc. Top agencies USAF (Department of the Air Force)	$5,041,263	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Jacobs Engineering Group Inc. 7 awardees Top agencies GSA (General Services Administration) DOJ (Department of Justice) USAF (Department of the Air Force)	$5,013,988	0.5%	Rank history: #9 in FY2021, #8 in FY2022, #5 in FY2023 and not on the FY2025 list; down 43 since FY2023.
49	Strata Architecture Inc. Top agencies DOI (Department of the Interior) GSA (General Services Administration) DHS (Department of Homeland Security)	$4,996,005	0.5%	Rank history: not on the FY2021 list, #31 in FY2022, #69 in FY2023 and #40 in FY2025; up 20 since FY2023.
50	Stanley Consultants, Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior) USAF (Department of the Air Force)	$4,849,553	0.5%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
51	Valhalla Engineering Group LLC Top agencies VA (Department of Veterans Affairs)	$4,831,441	0.5%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and #31 in FY2025; up 12 since FY2023.
52	Triple C-The A & E Group LLC Top agencies VA (Department of Veterans Affairs)	$4,752,890	0.5%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list and not on the FY2025 list; up 145 since FY2023.
53	Ayers / Saint / Gross, Incorporated Top agencies Smithsonian (Smithsonian Institution) DOI (Department of the Interior)	$4,741,474	0.5%	Rank history: #33 in FY2021, #23 in FY2022, #55 in FY2023 and not on the FY2025 list; up 2 since FY2023.
54	Parsons Corporation Through Parsons Government Services Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$4,606,134	0.4%	Rank history: not on the FY2021 list, #57 in FY2022, not on the FY2023 list and #16 in FY2025; up 123 since FY2023.
55	Stone HFG Architecture, LLC Top agencies VA (Department of Veterans Affairs)	$4,475,195	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 291 since FY2023.
56	Hellmuth, Obata & Kassabaum, Inc. Top agencies GSA (General Services Administration) NRC (Nuclear Regulatory Commission)	$4,333,555	0.4%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
57	Mills & Schnoering Architects LLC Top agencies GSA (General Services Administration) Smithsonian (Smithsonian Institution) VA (Department of Veterans Affairs)	$4,241,828	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 49 since FY2023.
58	Black & Veatch Special Projects Corp. Top agencies USAID (US Agency for International Development) Army (Department of the Army)	$4,136,448	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 278 since FY2023.
59	Dills Architects PC Top agencies USAF (Department of the Air Force)	$4,119,856	0.4%	Rank history: not on the FY2021 list, #90 in FY2022, not on the FY2023 list and not on the FY2025 list; up 99 since FY2023.
60	FFE - Heapy Jv-Ii, LLC Top agencies VA (Department of Veterans Affairs)	$3,976,308	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	Charlotte Engineers-Guidon JV LLC Top agencies VA (Department of Veterans Affairs)	$3,956,648	0.4%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and not on the FY2025 list; down 4 since FY2023.
62	Romanyk Consulting Corporation Top agencies VA (Department of Veterans Affairs)	$3,949,575	0.4%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; down 15 since FY2023.
63	Blue Trident, LLC Top agencies VA (Department of Veterans Affairs)	$3,911,703	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Helber Hastert & Fee Planners Inc. Top agencies Navy (Department of the Navy)	$3,841,775	0.4%	Rank history: #48 in FY2021, #20 in FY2022, #25 in FY2023 and #18 in FY2025; down 39 since FY2023.
65	Gwwo, Inc. Top agencies DOI (Department of the Interior) Smithsonian (Smithsonian Institution)	$3,795,566	0.4%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #37 in FY2025; down 30 since FY2023.
66	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)	$3,731,263	0.4%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
67	LEO a Daly and Huitt Zollars, a Joint Venture 4 awardees, including LEO A Daly + Nbbj JV and LEO A. Daly LLC Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs) Treasury (Department of the Treasury)	$3,687,722	0.4%	Rank history: not on the FY2021 list, #77 in FY2022, #6 in FY2023 and not on the FY2025 list; down 61 since FY2023.
68	Architrave P.C. Top agencies Smithsonian (Smithsonian Institution) GSA (General Services Administration) DOJ (Department of Justice)	$3,636,497	0.4%	Rank history: not on the FY2021 list, #38 in FY2022, #87 in FY2023 and not on the FY2025 list; up 19 since FY2023.
69	Line and Space, LLC Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts) DOJ (Department of Justice)	$3,523,934	0.3%	Rank history: not on the FY2021 list, #100 in FY2022, #50 in FY2023 and not on the FY2025 list; down 19 since FY2023.
70	Ch2M - Burns & Mcdonnell Joint Venture Top agencies Navy (Department of the Navy)	$3,484,240	0.3%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2025; new.
71	Shop Architects, Inc. Top agencies DOS (Department of State)	$3,312,601	0.3%	Rank history: #25 in FY2021, #21 in FY2022, #18 in FY2023 and #81 in FY2025; down 53 since FY2023.
72	FFE Environmental Services Inc Top agencies VA (Department of Veterans Affairs)	$3,269,780	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 184 since FY2023.
73	LEO A Daly + Nbbj JV Top agencies USAID (US Agency for International Development) GSA (General Services Administration)	$3,197,600	0.3%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
74	Duvall Decker Architects, P.A Top agencies GSA (General Services Administration) DOI (Department of the Interior) USAF (Department of the Air Force)	$3,121,495	0.3%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2025; up 31 since FY2023.
75	Machado and Silvetti Associates, Inc. Top agencies DOS (Department of State)	$3,091,646	0.3%	Rank history: #87 in FY2021, #45 in FY2022, not on the FY2023 list and #46 in FY2025; up 324 since FY2023.
76	PDG Inc. Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts) Treasury (Department of the Treasury)	$3,090,414	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 63 since FY2023.
77	Stantec Inc. 2 awardees, including Stantec Consulting Services Inc. Top agencies USSOCOM (United States Special Operations Command) DOI (Department of the Interior)	$3,042,224	0.3%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #52 in FY2025; up 4 since FY2023.
78	Gensler Architecture, Design & Planning, P.C. 2 awardees, including M Arthur Gensler JR & Associates Inc. Top agencies Commerce (Department of Commerce) GSA (General Services Administration) DHS (Department of Homeland Security)	$3,008,298	0.3%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
79	Croft and Associates, Inc. Top agencies DOI (Department of the Interior)	$2,996,083	0.3%	Rank history: #51 in FY2021, #72 in FY2022, #66 in FY2023 and not on the FY2025 list; down 13 since FY2023.
80	Design Partners, Incorporated Top agencies Navy (Department of the Navy)	$2,979,311	0.3%	Rank history: not on the FY2021 list, #83 in FY2022, #71 in FY2023 and #56 in FY2025; down 9 since FY2023.
81	Page Federal Solutions, LLC Through Davis Brody Bond, LLP Top agencies GSA (General Services Administration)	$2,928,304	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Spur Design LLC Top agencies VA (Department of Veterans Affairs)	$2,871,512	0.3%	Rank history: #14 in FY2021, #12 in FY2022, #26 in FY2023 and #35 in FY2025; down 56 since FY2023.
83	Mtfa Architecture, Inc. Top agencies Navy (Department of the Navy) DOS (Department of State) GSA (General Services Administration)	$2,748,587	0.3%	Rank history: #61 in FY2021, #51 in FY2022, #84 in FY2023 and #38 in FY2025; up 1 since FY2023.
84	Michael Maltzan Architecture, Incorporated Top agencies GSA (General Services Administration)	$2,740,276	0.3%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; up 79 since FY2023.
85	Alliance Consulting Group Seven Generations AE JV LLC Top agencies VA (Department of Veterans Affairs)	$2,733,004	0.3%	Rank history: #39 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 98 since FY2023.
86	Page-Loring LLC Top agencies Smithsonian (Smithsonian Institution)	$2,696,379	0.3%	Rank history: #7 in FY2021, #37 in FY2022, #85 in FY2023 and not on the FY2025 list; down 1 since FY2023.
87	Studio MA, Inc. Top agencies DOS (Department of State)	$2,690,407	0.3%	Rank history: #90 in FY2021, #7 in FY2022, #67 in FY2023 and #21 in FY2025; down 20 since FY2023.
88	Marvel Architects Landscape Architects Urban Designers PLLC Top agencies GSA (General Services Administration)	$2,672,849	0.3%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; up 152 since FY2023.
89	DLR Holding Company 3 awardees, including DLR Group Inc. and DLR Group of DC, P.C. Top agencies DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts) Smithsonian (Smithsonian Institution)	$2,659,088	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Bizsolutions 360 Inc. Top agencies USAID (US Agency for International Development)	$2,641,111	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 51 since FY2023.
91	Skidmore, Owings & Merrill LLP 3 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,639,948	0.3%	Rank history: #17 in FY2021, #22 in FY2022, #33 in FY2023 and not on the FY2025 list; down 58 since FY2023.
92	CB Design Group, Inc. Top agencies VA (Department of Veterans Affairs)	$2,604,610	0.3%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and not on the FY2025 list; down 9 since FY2023.
93	Liollio Hartman Cox JV, LLC Top agencies DOJ (Department of Justice)	$2,572,454	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 292 since FY2023.
94	Houser Walker Architecture, LLC Top agencies DOI (Department of the Interior) DHS (Department of Homeland Security)	$2,467,712	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; up 67 since FY2023.
95	Above Group Inc. Top agencies VA (Department of Veterans Affairs)	$2,443,016	0.2%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and #70 in FY2025; down 30 since FY2023.
96	Awen Solutions Group, LLC Top agencies VA (Department of Veterans Affairs)	$2,431,208	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 58 since FY2023.
97	Sa.studio, PLLC Top agencies DOT (Department of Transportation)	$2,355,046	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 110 since FY2023.
98	Studios Architecture Top agencies GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$2,325,987	0.2%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; up 205 since FY2023.
99	Maiden & Associates, PC Top agencies HUD (Department of Housing and Urban Development)	$2,324,355	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 19 since FY2023.
100	Schwartz / Silver Architects, Inc. Top agencies GSA (General Services Administration) DOI (Department of the Interior)	$2,240,846	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 186 since FY2023.

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100 of 579 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 $1.03 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 NAICS 541310 contractors in FY2024?

1. WSP USA Solutions Inc. ($72M), 2. Jacobs Government Services Company ($59.4M), 3. AECOM Technical Services, Inc. ($39M), 4. LEO A. Daly LLC ($22.3M), 5. Dattner Architects DPC ($19.7M), 6. AECOM ($16.9M), 7. Smithgroup, Inc. ($15.6M), 8. Michael Baker International, Inc. ($15M), 9. Smithgroup Companies, Inc. ($13.3M), 10. RLF and Sherlock Smith and Adams JV ($11.2M).

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