Top 42 Contractors in PSC M1AA: Operation of Office Buildings, Jul 2025–Jun 2026

Name: Top 42 Contractors in PSC M1AA: Operation of Office Buildings, 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 87% of PSC M1AA contract dollars from July 2025 through June 2026

Contract obligations: $107,534,270 Net of deobligations, by contracts coded PSC M1AA
Contractors: 45 Parent companies with an obligation
Largest contractor: Four Seasons Environmental Inc. $56.7 million, 50.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 42 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Four Seasons Environmental Inc. Top agencies HHS (Department of Health and Human Services)	$56,684,062	50.3%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Tunista Logistics Solutions LLC Top agencies USAF (Department of the Air Force)	$14,226,554	12.6%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
3	Nana Regional Corporation, Inc. Through Akima Global Logistics, LLC Top agencies Army (Department of the Army)	$6,296,574	5.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4	M.c. Dean, Inc. Top agencies USAF (Department of the Air Force)	$5,032,096	4.5%	Rank history: not on the FY2021 list, #5 in FY2022, #2 in FY2023, #2 in FY2024 and #3 in FY2025; down 1 since Jul 2024–Jun 2025.
5	Electronic Metrology Laboratory, LLC Top agencies GSA (General Services Administration) CFPB (Consumer Financial Protection Bureau)	$4,829,848	4.3%	Rank history: #5 in FY2021, #6 in FY2022, #3 in FY2023, #3 in FY2024 and #4 in FY2025; unchanged since Jul 2024–Jun 2025.
6	ST. George Tanaq Corporation Through Tanaq Government Services, LLC Top agencies GSA (General Services Administration) Commerce (Department of Commerce)	$3,711,925	3.3%	Rank history: not on the FY2021 list, #47 in FY2022, #29 in FY2023, #28 in FY2024 and #23 in FY2025; up 19 since Jul 2024–Jun 2025.
7	The Building People LLC Top agencies Navy (Department of the Navy)	$2,199,920	2.0%	Rank history: not on the FY2021 list, #11 in FY2022, #6 in FY2023, #8 in FY2024 and #7 in FY2025; up 1 since Jul 2024–Jun 2025.
8	Northern Management Services, Inc. Top agencies GSA (General Services Administration) DHS (Department of Homeland Security)	$1,945,893	1.7%	Rank history: #32 in FY2021, #12 in FY2022, #12 in FY2023, #9 in FY2024 and #10 in FY2025; up 5 since Jul 2024–Jun 2025.
9	Satellite Services Inc. Top agencies GSA (General Services Administration) DOJ (Department of Justice) AOUSC (Administrative Office of the U.S. Courts)	$1,828,993	1.6%	Rank history: #11 in FY2021, #7 in FY2022, #5 in FY2023, #4 in FY2024 and #9 in FY2025; unchanged since Jul 2024–Jun 2025.
10	Parallax Advanced Research Corp Top agencies USAF (Department of the Air Force)	$1,635,120	1.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
11	Caso Global Corp Top agencies DOT (Department of Transportation)	$1,143,132	1.0%	Rank history: #19 in FY2021, #16 in FY2022, #13 in FY2023, #12 in FY2024 and #12 in FY2025; down 1 since Jul 2024–Jun 2025.
12	Intellectechs Inc. Top agencies Navy (Department of the Navy)	$1,140,437	1.0%	Rank history: not on the FY2021 list, #18 in FY2022, #15 in FY2023, #13 in FY2024 and #14 in FY2025; up 3 since Jul 2024–Jun 2025.
13	Phoenix Management Inc Top agencies GSA (General Services Administration)	$1,119,227	1.0%	Rank history: #13 in FY2021, #14 in FY2022, #8 in FY2023, #10 in FY2024 and #11 in FY2025; down 2 since Jul 2024–Jun 2025.
14	Ben Fitzgerald Real Estate Services, L.L.C. Top agencies GSA (General Services Administration)	$971,848	0.9%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023, #14 in FY2024 and #15 in FY2025; unchanged since Jul 2024–Jun 2025.
15	Work Inc. Top agencies Army (Department of the Army)	$946,347	0.8%	Rank history: #17 in FY2021, #23 in FY2022, #14 in FY2023, #15 in FY2024 and #13 in FY2025; down 3 since Jul 2024–Jun 2025.
16	Rivet Operations Company LLC Top agencies Navy (Department of the Navy)	$689,621	0.6%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #17 in FY2025; up 3 since Jul 2024–Jun 2025.
17	Pritchett Controls, Inc. Top agencies DISA (Defense Information Systems Agency)	$470,947	0.4%	Rank history: #20 in FY2021, #24 in FY2022, #20 in FY2023, #18 in FY2024 and #19 in FY2025; up 1 since Jul 2024–Jun 2025.
18	Facility Services Management, Inc. Top agencies NARA (National Archives and Records Administration)	$460,199	0.4%	Rank history: #28 in FY2021, #26 in FY2022, #22 in FY2023, #20 in FY2024 and #22 in FY2025; up 3 since Jul 2024–Jun 2025.
19	Strabag Property and Facility Services S.r.o. Top agencies DOS (Department of State)	$435,275	0.4%	Rank history: not on the FY2021–FY2023 lists, #21 in FY2024 and #20 in FY2025; up 3 since Jul 2024–Jun 2025.
20	Action Facilities Management Inc. Top agencies DOL (Department of Labor)	$351,453	0.3%	Rank history: #24 in FY2021, #21 in FY2022, #16 in FY2023, #16 in FY2024 and #16 in FY2025; down 4 since Jul 2024–Jun 2025.
21	2025 E Street Office Leasehold Condominium Unit Owners Association, Inc. Top agencies DOS (Department of State)	$218,480	0.2%	Rank history: #8 in FY2021, #10 in FY2022, #7 in FY2023, #6 in FY2024 and #5 in FY2025; down 17 since Jul 2024–Jun 2025.
22	Cherokee Nation Through Cherokee Nation Armored Solutions, LLC Top agencies MDA (DOD Missile Defense Agency)	$162,942	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
23	Cleartronic, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$130,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24	Kira Aviation Services LLC Top agencies Army (Department of the Army)	$96,954	0.1%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #6 in FY2025; down 17 since Jul 2024–Jun 2025.
25	Centric Elevator Corporation Through Centric Elevator Corporation of Oregon, Inc. Top agencies GSA (General Services Administration)	$96,261	0.1%	Rank history: not on the FY2021 list, #35 in FY2022, #33 in FY2023, #25 in FY2024 and #24 in FY2025; up 1 since Jul 2024–Jun 2025.
26	Capital Brand Group LLC Top agencies WHS (DOD Washington Headquarters Service)	$91,749	0.1%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; up 20 since Jul 2024–Jun 2025.
27	J Foster & Associates LLC Top agencies USDA (Department of Agriculture)	$82,229	0.1%	Rank history: #31 in FY2021, #39 in FY2022, #34 in FY2023, #27 in FY2024 and #28 in FY2025; up 1 since Jul 2024–Jun 2025.
28	Otis Elevator Company Top agencies GSA (General Services Administration)	$68,104	0.1%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #35 in FY2024 and #29 in FY2025; up 2 since Jul 2024–Jun 2025.
29	Pegasus Support Services LLC Top agencies DHS (Department of Homeland Security)	$54,683	<0.1%	Rank history: #3 in FY2021, #8 in FY2022, #11 in FY2023, not on the FY2024 list and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30	TK Elevator Corporation Top agencies GSA (General Services Administration)	$51,960	<0.1%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #30 in FY2025; up 4 since Jul 2024–Jun 2025.
31	Government and Military Certification Systems, Inc. Top agencies Navy (Department of the Navy)	$44,575	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32	Arnoff Moving & Storage Inc. Top agencies Army (Department of the Army)	$43,114	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	Societe Generale De Renovation Et De Conseil Top agencies DOS (Department of State)	$41,979	<0.1%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #33 in FY2025; down 9 since Jul 2024–Jun 2025.
34	C.s. Adams Management and Consulting Group LLC Top agencies DOI (Department of the Interior)	$37,378	<0.1%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #32 in FY2025; up 3 since Jul 2024–Jun 2025.
35	Caracal Enterprises, LLC Top agencies Army (Department of the Army)	$27,680	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
36	D.k. Outdoor Services LLC Top agencies DOI (Department of the Interior)	$22,500	<0.1%	Rank history: #45 in FY2021, #53 in FY2022, #45 in FY2023, #42 in FY2024 and #37 in FY2025; up 7 since Jul 2024–Jun 2025.
37	Chimes International, Ltd. Through Chimes District of Columbia Inc. Top agencies GSA (General Services Administration)	$19,836	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	Purdue University Top agencies NASA (National Aeronautics and Space Administration)	$19,500	<0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023, #41 in FY2024 and #38 in FY2025; up 2 since Jul 2024–Jun 2025.
39	Fortazo Corp. Top agencies Army (Department of the Army)	$17,340	<0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; up 6 since Jul 2024–Jun 2025.
40	Pueblo Mechanical and Controls, LLC Top agencies DOI (Department of the Interior)	$6,607	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Metropolitan Washington Airports Authority Top agencies DOJ (Department of Justice)	$6,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	Maconnerie Batiment Services Top agencies DOS (Department of State)	$4,261	<0.1%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; down 6 since Jul 2024–Jun 2025.

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42 of 45 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 $113 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 M1AA contractors in Jul 2025–Jun 2026?

1. Four Seasons Environmental Inc. ($56.7M), 2. Tunista Logistics Solutions LLC ($14.2M), 3. Nana Regional Corporation, Inc. ($6.3M), 4. M.c. Dean, Inc. ($5.03M), 5. Electronic Metrology Laboratory, LLC ($4.83M), 6. ST. George Tanaq Corporation ($3.71M), 7. The Building People LLC ($2.2M), 8. Northern Management Services, Inc. ($1.95M), 9. Satellite Services Inc. ($1.83M), 10. Parallax Advanced Research Corp ($1.64M).

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