Top 33 Contractors in PSC Z1CZ: Maintenance of Other Educational Buildings, FY2023

Name: Top 33 Contractors in PSC Z1CZ: Maintenance of Other Educational Buildings, FY2023
Creator: GovTribe

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

The top 10 won 92% of FY2023 PSC Z1CZ contract dollars

Contract obligations: $36,069,271 Net of deobligations, by contracts coded PSC Z1CZ
Contractors: 34 Parent companies with an obligation
Largest contractor: R.a. Burch Construction Co., Inc. $24 million, 66.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 33 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	R.a. Burch Construction Co., Inc. Top agencies Navy (Department of the Navy)	$24,031,868	66.4%	Rank history: not on the FY2021–FY2022 lists; new.
2	K2 Contracting Group LLC Top agencies Army (Department of the Army)	$2,493,250	6.9%	Rank history: not on the FY2021–FY2022 lists; new.
3	GAP Rock Engineering LLC 2 awardees, including Rock Gap Engineering LLC Top agencies DOI (Department of the Interior)	$1,919,338	5.3%	Rank history: not on the FY2021–FY2022 lists; new.
4	Armitage SAI JV Top agencies Navy (Department of the Navy)	$1,760,650	4.9%	Rank history: not on the FY2021–FY2022 lists; new.
5	International Support Group LLC Top agencies DOL (Department of Labor)	$708,664	2.0%	Rank history: not on the FY2021 list and #6 in FY2022; up 1 since FY2022.
6	Westover Roofing, LLC Top agencies Army (Department of the Army)	$676,512	1.9%	Rank history: not on the FY2021–FY2022 lists; new.
7	New Dominion Construction LLC Top agencies Navy (Department of the Navy)	$494,172	1.4%	Rank history: not on the FY2021 list and #4 in FY2022; down 3 since FY2022.
8	Sankyo Holdings K.K. Through Sankyo Reinetsu Co.,Ltd. Top agencies Navy (Department of the Navy)	$493,082	1.4%	Rank history: not on the FY2021–FY2022 lists; new.
9	Msab/HCR JV LLC Top agencies USAF (Department of the Air Force)	$401,372	1.1%	Rank history: not on the FY2021–FY2022 lists; new.
10	Olgoonik Corporation Through Olgoonik Enterprises, LLC Top agencies DHS (Department of Homeland Security)	$376,604	1.0%	Rank history: not on the FY2021–FY2022 lists; new.
11	Southern Aire Contracting, Inc. Top agencies DHS (Department of Homeland Security)	$347,844	1.0%	Rank history: not on the FY2021–FY2022 lists; new.
12	Seneca Construction Management LLC Top agencies Army (Department of the Army)	$295,420	0.8%	Rank history: #2 in FY2021 and not on the FY2022 list; returned.
13	American Engineering Corporation Top agencies Navy (Department of the Navy)	$269,416	0.7%	Rank history: #13 in FY2021 and not on the FY2022 list; returned.
14	NCS / EML SB Joint Venture LLC Top agencies Navy (Department of the Navy)	$207,294	0.6%	Rank history: not on the FY2021–FY2022 lists; new.
15	Tuckman-Barbee Construction Co., Inc. Top agencies Navy (Department of the Navy)	$206,924	0.6%	Rank history: #15 in FY2021 and #20 in FY2022; up 5 since FY2022.
16	Suzuki Kensetsu Kogyo Co.,Ltd. Top agencies USAF (Department of the Air Force)	$175,250	0.5%	Rank history: not on the FY2021–FY2022 lists; new.
17	Burton Construction, Inc. Top agencies USDA (Department of Agriculture)	$153,632	0.4%	Rank history: not on the FY2021–FY2022 lists; new.
18	Donley Construction LLC Top agencies Navy (Department of the Navy)	$150,831	0.4%	Rank history: #3 in FY2021 and not on the FY2022 list; returned.
19	Inversiones Lavaber, S.R.L. Top agencies USSOCOM (United States Special Operations Command)	$142,035	0.4%	Rank history: not on the FY2021–FY2022 lists; new.
20	Olgoonik Enterprises, LLC Top agencies DHS (Department of Homeland Security)	$132,759	0.4%	Rank history: not on the FY2021–FY2022 lists; new.
21	Brymak Eagle Pro LLC Top agencies DODEA (Department of Defense Education Activity)	$132,538	0.4%	Rank history: not on the FY2021–FY2022 lists; new.
22	Patricia I. Romero, Inc. Top agencies Navy (Department of the Navy)	$122,621	0.3%	Rank history: #1 in FY2021 and #1 in FY2022; down 21 since FY2022.
23	V3Gate, LLC Top agencies SSA (Social Security Administration)	$65,096	0.2%	Rank history: not on the FY2021 list and #17 in FY2022; down 6 since FY2022.
24	Okinawa Sobi Kogyo, K.K. Top agencies Navy (Department of the Navy)	$59,281	0.2%	Rank history: not on the FY2021–FY2022 lists; new.
25	Millennium Contracting, Inc. Top agencies DOI (Department of the Interior)	$55,288	0.2%	Rank history: not on the FY2021–FY2022 lists; new.
26	Metro Water-Proofing, Inc. Top agencies DOT (Department of Transportation)	$51,730	0.1%	Rank history: not on the FY2021–FY2022 lists; new.
27	Brewer & Co of West Virginia, Inc. Top agencies USDA (Department of Agriculture)	$39,500	0.1%	Rank history: not on the FY2021–FY2022 lists; new.
28	Veren Industries LLC Top agencies USDA (Department of Agriculture)	$27,300	0.1%	Rank history: not on the FY2021–FY2022 lists; new.
29	Asi-Brymak JV Top agencies DODEA (Department of Defense Education Activity)	$26,451	0.1%	Rank history: not on the FY2021–FY2022 lists; new.
30	MBE & WBE Certified LLC Top agencies USAF (Department of the Air Force)	$23,618	0.1%	Rank history: not on the FY2021–FY2022 lists; new.
31	Summit Enterprises Contracting Corp Top agencies USDA (Department of Agriculture)	$17,832	<0.1%	Rank history: not on the FY2021 list and #7 in FY2022; down 24 since FY2022.
32	Vintage Building & Restoration Inc. Top agencies DOI (Department of the Interior)	$11,910	<0.1%	Rank history: not on the FY2021 list and #9 in FY2022; down 23 since FY2022.
33	Airwave Construction Group, LLC Top agencies USDA (Department of Agriculture)	$5,242	<0.1%	Rank history: #8 in FY2021 and #15 in FY2022; down 18 since FY2022.

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33 of 34 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 $36.2 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 Z1CZ contractors in FY2023?

1. R.a. Burch Construction Co., Inc. ($24M), 2. K2 Contracting Group LLC ($2.49M), 3. GAP Rock Engineering LLC ($1.92M), 4. Armitage SAI JV ($1.76M), 5. International Support Group LLC ($709K), 6. Westover Roofing, LLC ($677K), 7. New Dominion Construction LLC ($494K), 8. Sankyo Holdings K.K. ($493K), 9. Msab/HCR JV LLC ($401K), 10. Olgoonik Corporation ($377K).

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