Top 25 Contractors in PSC C1DB: Architect and Engineering – Construction: Laboratories and Clinics, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Ameresco Inc. Top agencies USDA (Department of Agriculture)	$8,442,883	27.4%	Rank history: #11 in FY2021, #10 in FY2022, #12 in FY2023, #14 in FY2024 and #1 in FY2025; up 8 since Aug 2024–Jul 2025.
2	The Johnson-Mcadams Firm, P.a. Top agencies USDA (Department of Agriculture)	$7,738,452	25.2%	Rank history: #21 in FY2021, #4 in FY2022, #2 in FY2023, #1 in FY2024 and #3 in FY2025; unchanged since Aug 2024–Jul 2025.
3	Siemens Aktiengesellschaft Through Siemens Government Technologies Inc. Top agencies USDA (Department of Agriculture)	$3,261,815	10.6%	Rank history: #20 in FY2021, #19 in FY2022, #19 in FY2023, #20 in FY2024 and #4 in FY2025; new, not ranked in Aug 2024–Jul 2025.
4	Bailey Edward Design, Inc. Top agencies USDA (Department of Agriculture)	$1,395,299	4.5%	Rank history: #31 in FY2021, #11 in FY2022, #10 in FY2023, #3 in FY2024 and #5 in FY2025; unchanged since Aug 2024–Jul 2025.
5	Richard Mcelhiney Architect PLLC Top agencies EPA (Environmental Protection Agency)	$1,353,058	4.4%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #12 in FY2025; up 2 since Aug 2024–Jul 2025.
6	I Design and Planning, LLC Top agencies EPA (Environmental Protection Agency)	$1,064,429	3.5%	Rank history: #34 in FY2021, #22 in FY2022, #16 in FY2023, #11 in FY2024 and #7 in FY2025; up 5 since Aug 2024–Jul 2025.
7	Apogee Consulting Group, P.a. Top agencies VA (Department of Veterans Affairs)	$983,889	3.2%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
8	RLF and Sherlock Smith and Adams JV Top agencies Navy (Department of the Navy)	$859,780	2.8%	Rank history: #1 in FY2021, not on the FY2022 list, #37 in FY2023, #10 in FY2024 and #23 in FY2025; up 17 since Aug 2024–Jul 2025.
9	Solpac Construction Inc. Top agencies Navy (Department of the Navy)	$820,771	2.7%	Rank history: not on the FY2021 list, #25 in FY2022, #4 in FY2023, #30 in FY2024 and #8 in FY2025; up 11 since Aug 2024–Jul 2025.
10	Alares LLC Top agencies VA (Department of Veterans Affairs)	$759,553	2.5%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; new, not ranked in Aug 2024–Jul 2025.
11	Setty & Associates International PLLC Top agencies USDA (Department of Agriculture)	$616,610	2.0%	Rank history: #4 in FY2021, #1 in FY2022, #9 in FY2023, #33 in FY2024 and not on the FY2025 list; up 5 since Aug 2024–Jul 2025.
12	Summer Consultants Inc Top agencies USDA (Department of Agriculture)	$605,080	2.0%	Rank history: not on the FY2021 list, #7 in FY2022, #8 in FY2023, #16 in FY2024 and #17 in FY2025; up 3 since Aug 2024–Jul 2025.
13	Hanoi Technology Construction Company Limited Top agencies Navy (Department of the Navy)	$445,859	1.4%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; new, not ranked in Aug 2024–Jul 2025.
14	Gdm-Ae, Inc. Top agencies VA (Department of Veterans Affairs)	$345,406	1.1%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Aug 2024–Jul 2025.
15	Above Group Inc. Top agencies VA (Department of Veterans Affairs)	$285,349	0.9%	Rank history: #42 in FY2021, #20 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
16	American Structurepoint Inc. Top agencies VA (Department of Veterans Affairs)	$260,704	0.8%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, not on the FY2024 list and #24 in FY2025; up 12 since Aug 2024–Jul 2025.
17	LRS Federal LLC Top agencies USDA (Department of Agriculture)	$255,503	0.8%	Rank history: #43 in FY2021, #14 in FY2022, #13 in FY2023, #17 in FY2024 and #19 in FY2025; down 4 since Aug 2024–Jul 2025.
18	Oculus Inc. Top agencies EPA (Environmental Protection Agency)	$235,387	0.8%	Rank history: #22 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
19	The Schemmer Associates Inc. Top agencies USDA (Department of Agriculture)	$183,861	0.6%	Rank history: #5 in FY2021, #5 in FY2022, #5 in FY2023, #19 in FY2024 and not on the FY2025 list; up 5 since Aug 2024–Jul 2025.
20	Anderson Engineering of Minnesota, LLC Top agencies VA (Department of Veterans Affairs)	$124,362	0.4%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #22 in FY2025; up 3 since Aug 2024–Jul 2025.
21	Spees-Hernandez JV LLC Through Spees LLC Top agencies VA (Department of Veterans Affairs)	$122,864	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
22	Wiley Wilson Burns & Mcdonnell Joint Venture Top agencies Navy (Department of the Navy)	$38,586	0.1%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; down 12 since Aug 2024–Jul 2025.
23	C and J Maintenance Construction, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$34,061	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
24	Dynotec-Kzf JV, LLC Top agencies EPA (Environmental Protection Agency)	$26,578	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Fellenzer Engineering LLP Top agencies VA (Department of Veterans Affairs)	$3,935	<0.1%	Rank history: #19 in FY2021, not on the FY2022 list, #21 in FY2023, #31 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.

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 $30.8 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers