Top 46 Contractors in PSC Z2DB: Repair or Alteration of Laboratories and Clinics, Jul 2025–Jun 2026

Name: Top 46 Contractors in PSC Z2DB: Repair or Alteration of Laboratories and Clinics, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 76% of PSC Z2DB contract dollars from July 2025 through June 2026

Contract obligations: $18,210,686 Net of deobligations, by contracts coded PSC Z2DB
Contractors: 46 Parent companies with an obligation
Largest contractor: Red Bison Services, LLC $4.16 million, 20.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 46 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Red Bison Services, LLC Top agencies USDA (Department of Agriculture)	$4,162,480	20.3%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #1 in FY2025; up 11 since Jul 2024–Jun 2025.
2	KLJ Services LLC Top agencies Navy (Department of the Navy)	$3,495,385	17.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
3	RJS Construction, Inc. Top agencies USDA (Department of Agriculture)	$1,532,174	7.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4	Carrigg Commercial Builders LLC Top agencies VA (Department of Veterans Affairs)	$1,119,480	5.5%	Rank history: #2 in FY2021, #25 in FY2022, #30 in FY2023, #37 in FY2024 and #3 in FY2025; up 14 since Jul 2024–Jun 2025.
5	Phelan Construction LLC Top agencies USDA (Department of Agriculture)	$1,087,770	5.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
6	Yuil Eng. & Const. Co.,Ltd Top agencies Army (Department of the Army)	$1,034,844	5.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
7	Marrero, Couvillon & Associates, L.L.C. Top agencies USDA (Department of Agriculture)	$1,023,379	5.0%	Rank history: #63 in FY2021, not on the FY2022 list, #15 in FY2023, #13 in FY2024 and #26 in FY2025; up 8 since Jul 2024–Jun 2025.
8	Spwc, LLC Top agencies DHA (Defense Health Agency)	$760,906	3.7%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Jul 2024–Jun 2025.
9	Heritage Construction LLC Top agencies Navy (Department of the Navy)	$653,940	3.2%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; up 39 since Jul 2024–Jun 2025.
10	New Dominion Construction LLC Top agencies DHA (Defense Health Agency)	$598,000	2.9%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #13 in FY2025; up 12 since Jul 2024–Jun 2025.
11	Signature Renovations LLC Top agencies DOJ (Department of Justice)	$579,460	2.8%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023, not on the FY2024 list and #14 in FY2025; new, not ranked in Jul 2024–Jun 2025.
12	LG Construction Inc. Top agencies Army (Department of the Army)	$559,944	2.7%	Rank history: #18 in FY2021, #11 in FY2022, #13 in FY2023, #10 in FY2024 and #10 in FY2025; down 1 since Jul 2024–Jun 2025.
13	Huot Construction and Services, Inc. Top agencies USDA (Department of Agriculture)	$344,040	1.7%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	Abide International, Inc. Top agencies HHS (Department of Health and Human Services)	$330,677	1.6%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #12 in FY2025; up 13 since Jul 2024–Jun 2025.
15	Paramount Construction Group, LLC Top agencies VA (Department of Veterans Affairs)	$239,927	1.2%	Rank history: #28 in FY2021, not on the FY2022 list, #21 in FY2023, not on the FY2024 list and #27 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Lacreek Development Corp Top agencies HHS (Department of Health and Human Services)	$237,663	1.2%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
17	Ellis Builders Co Top agencies USDA (Department of Agriculture)	$199,989	1.0%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; new, not ranked in Jul 2024–Jun 2025.
18	Folsom, LLC Top agencies HHS (Department of Health and Human Services)	$199,354	1.0%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #30 in FY2025; new, not ranked in Jul 2024–Jun 2025.
19	Borlie Mechanical Contracting LLC Top agencies USDA (Department of Agriculture)	$196,690	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
20	Veren Industries LLC Top agencies USDA (Department of Agriculture)	$195,623	1.0%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21	Contract and Purchasing Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$156,585	0.8%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2023, not on the FY2024 list and #17 in FY2025; up 4 since Jul 2024–Jun 2025.
22	Mill Creek Firelake JV LLC Top agencies USDA (Department of Agriculture)	$137,358	0.7%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Black & Veatch Special Projects Corp. Top agencies DTRA (Defense Threat Reduction Agency)	$131,333	0.6%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #20 in FY2025; up 1 since Jul 2024–Jun 2025.
24	T & D Mechanical, Inc. Top agencies USDA (Department of Agriculture)	$130,381	0.6%	Rank history: #52 in FY2021, not on the FY2022–FY2024 lists and #36 in FY2025; new, not ranked in Jul 2024–Jun 2025.
25	Honeywell International Inc. Top agencies GSA (General Services Administration)	$121,458	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
26	Hirt Electric, LLC Top agencies USDA (Department of Agriculture)	$121,106	0.6%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; up 6 since Jul 2024–Jun 2025.
27	Southeastern Industrial Construction, LLC Top agencies HHS (Department of Health and Human Services)	$110,005	0.5%	Rank history: #12 in FY2021, #15 in FY2022, #17 in FY2023, #19 in FY2024 and #39 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	Nihon Meccs Co.,Ltd. Top agencies Navy (Department of the Navy)	$68,427	0.3%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #41 in FY2025; down 2 since Jul 2024–Jun 2025.
29	Kekolu Contracting, LLC Top agencies Navy (Department of the Navy)	$64,225	0.3%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #7 in FY2025; down 22 since Jul 2024–Jun 2025.
30	Tidewater Mechanical LLC Top agencies DHS (Department of Homeland Security)	$64,100	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
31	Miwok Construction LLC Top agencies HHS (Department of Health and Human Services)	$58,350	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32	South Coast Mechanical, LLC Through South Coast Electrical Inc. Top agencies HHS (Department of Health and Human Services)	$50,810	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	Jag Underground LLC Top agencies USDA (Department of Agriculture)	$50,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
34	Nana Regional Corporation, Inc. Through Akima Facilities Operations LLC Top agencies USDA (Department of Agriculture)	$47,108	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Hampton Roads Mechanical of Virginia, LLC Top agencies Navy (Department of the Navy)	$38,039	0.2%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Wasker Enterprises Limited Top agencies DOS (Department of State)	$35,323	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37	Parliament LLC Top agencies USDA (Department of Agriculture)	$31,978	0.2%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; down 2 since Jul 2024–Jun 2025.
38	Ameritech Contracting LLC Top agencies VA (Department of Veterans Affairs)	$31,599	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	J & G Solutions LLC Top agencies USDA (Department of Agriculture)	$31,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
40	Tescan USA Inc. Top agencies NASA (National Aeronautics and Space Administration)	$29,282	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Sieverding Construction, Inc. Top agencies USDA (Department of Agriculture)	$28,225	0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Jul 2024–Jun 2025.
42	Vision Contracting Inc. Top agencies USDA (Department of Agriculture)	$23,600	0.1%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
43	T E Davis Construction Co Top agencies DHA (Defense Health Agency)	$18,900	0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
44	An41-Aak JV LLC Top agencies Navy (Department of the Navy)	$17,592	0.1%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; down 36 since Jul 2024–Jun 2025.
45	Rusty Bucket Construction LLC Top agencies USDA (Department of Agriculture)	$7,622	<0.1%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Reliance-Bernexis Joint Venture LLC Top agencies HHS (Department of Health and Human Services)	$7,436	<0.1%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2023, #61 in FY2024 and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.

Show all 46

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 $20.5 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.
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 Jul 2024–Jun 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

Who were the top 10 PSC Z2DB contractors in Jul 2025–Jun 2026?

1. Red Bison Services, LLC ($4.16M), 2. KLJ Services LLC ($3.5M), 3. RJS Construction, Inc. ($1.53M), 4. Carrigg Commercial Builders LLC ($1.12M), 5. Phelan Construction LLC ($1.09M), 6. Yuil Eng. & Const. Co.,Ltd ($1.03M), 7. Marrero, Couvillon & Associates, L.L.C. ($1.02M), 8. Spwc, LLC ($761K), 9. Heritage Construction LLC ($654K), 10. New Dominion Construction LLC ($598K).

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