Top 53 Contractors in PSC Z1BA: Maintenance of Air Traffic Control Towers, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Walsh Federal LLC Top agencies DOT (Department of Transportation)	$41,478,370	42.6%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
2	E Corp Top agencies DOT (Department of Transportation)	$23,020,457	23.6%	Rank history: #2 in FY2021, #15 in FY2022, #5 in FY2023 and #3 in FY2025; up 3 since FY2023.
3	Sergents Mechanical Systems Inc. Top agencies DOT (Department of Transportation)	$4,889,035	5.0%	Rank history: #6 in FY2021, not on the FY2022 list, #18 in FY2023 and #34 in FY2025; up 15 since FY2023.
4	Cornerstone Construction Services, LLC Top agencies DOT (Department of Transportation)	$4,667,619	4.8%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #8 in FY2025; up 49 since FY2023.
5	Armstrong Elevator Company Top agencies DOT (Department of Transportation)	$3,188,044	3.3%	Rank history: #18 in FY2021, #5 in FY2022, #9 in FY2023 and not on the FY2025 list; up 4 since FY2023.
6	M2 Federal Inc. Top agencies DOT (Department of Transportation)	$2,835,515	2.9%	Rank history: not on the FY2021 list, #10 in FY2022, #27 in FY2023 and #23 in FY2025; up 21 since FY2023.
7	Preferred Electric, LLC Top agencies DOT (Department of Transportation)	$2,677,545	2.7%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
8	Guardian Construction, Inc. Top agencies DOT (Department of Transportation)	$1,711,725	1.8%	Rank history: #12 in FY2021, not on the FY2022 list, #4 in FY2023 and #4 in FY2025; down 4 since FY2023.
9	Addon Services LLC Top agencies DOT (Department of Transportation)	$1,299,142	1.3%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
10	Weil Construction Inc Top agencies DOT (Department of Transportation)	$1,066,556	1.1%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023 and #26 in FY2025; up 1 since FY2023.
11	Avantti Builders Group LLC Top agencies DOT (Department of Transportation)	$813,837	0.8%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and #49 in FY2025; up 22 since FY2023.
12	Magnum Inc. Top agencies DOT (Department of Transportation)	$713,362	0.7%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023 and not on the FY2025 list; down 5 since FY2023.
13	Grot, Inc. Top agencies DOT (Department of Transportation)	$693,786	0.7%	Rank history: not on the FY2021 list, #24 in FY2022, #29 in FY2023 and #44 in FY2025; up 16 since FY2023.
14	TK Elevator Corporation 4 awardees, including T K Elevator Corporation Top agencies DOT (Department of Transportation)	$670,325	0.7%	Rank history: #14 in FY2021, #19 in FY2022, #17 in FY2023 and #13 in FY2025; up 3 since FY2023.
15	Regis Southern, Inc. Top agencies DOT (Department of Transportation)	$611,344	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
16	Prow'ess Construction Corp. Top agencies DOT (Department of Transportation)	$538,320	0.6%	Rank history: not on the FY2021 list, #25 in FY2022, #6 in FY2023 and #54 in FY2025; down 10 since FY2023.
17	CMP Commercial Construction Inc Top agencies DOT (Department of Transportation)	$418,267	0.4%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
18	Knight Eagle Contracting Group, Inc. Top agencies DOT (Department of Transportation)	$375,527	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
19	Henock Construction LLC Top agencies USAF (Department of the Air Force)	$346,215	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Honeywell International Inc. Top agencies DOT (Department of Transportation)	$336,027	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
21	The Matthews Group Inc. Top agencies DOT (Department of Transportation)	$322,666	0.3%	Rank history: #28 in FY2021, #40 in FY2022, #2 in FY2023 and #1 in FY2025; down 19 since FY2023.
22	J G Contracting Top agencies DOT (Department of Transportation)	$220,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
23	C & J General Contractors LLC Top agencies USAF (Department of the Air Force)	$206,676	0.2%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023 and not on the FY2025 list; down 8 since FY2023.
24	CIN-G Contracting LLC Top agencies DOT (Department of Transportation)	$154,060	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
25	Tj&B Air Conditioning and Electric, LLC Top agencies DOT (Department of Transportation)	$150,264	0.2%	Rank history: #3 in FY2021, #3 in FY2022, #52 in FY2023 and #6 in FY2025; up 27 since FY2023.
26	M.e. Tafoya Enterprises, Inc. Top agencies DOT (Department of Transportation)	$139,885	0.1%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #50 in FY2025; up 5 since FY2023.
27	Cornejo Jesus Top agencies DOT (Department of Transportation)	$124,446	0.1%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and not on the FY2025 list; down 4 since FY2023.
28	Range Construction LLC Top agencies DOT (Department of Transportation)	$119,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Cowboy Electrical Services Inc. Top agencies DOT (Department of Transportation)	$102,608	0.1%	Rank history: #8 in FY2021, #4 in FY2022, #65 in FY2023 and not on the FY2025 list; up 36 since FY2023.
30	Valor Construction Management, LLC Top agencies DOT (Department of Transportation)	$97,563	0.1%	Rank history: not on the FY2021 list, #30 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
31	Bartkowski Life Safety Corp Top agencies DOT (Department of Transportation)	$92,932	0.1%	Rank history: #19 in FY2021, #33 in FY2022, #39 in FY2023 and #47 in FY2025; up 8 since FY2023.
32	Flight Line Glazing LLC Top agencies DOT (Department of Transportation)	$89,700	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	J. Wayne Poole, Inc. 2 awardees Top agencies DOT (Department of Transportation)	$87,741	0.1%	Rank history: not on the FY2021 list, #2 in FY2022, #25 in FY2023 and not on the FY2025 list; down 8 since FY2023.
34	Central Texas Elevator, LLC Top agencies DOT (Department of Transportation)	$77,127	0.1%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and not on the FY2025 list; up 12 since FY2023.
35	Acro Construction, LLC Top agencies DOT (Department of Transportation)	$76,671	0.1%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2025 list; down 13 since FY2023.
36	Lacusong Leilani Top agencies DOT (Department of Transportation)	$71,095	0.1%	Rank history: not on the FY2021 list, #6 in FY2022, #13 in FY2023 and #48 in FY2025; down 23 since FY2023.
37	Lonergan Electric Service Inc. Top agencies DOT (Department of Transportation)	$63,029	0.1%	Rank history: #23 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
38	JIM Jam, Inc. Top agencies DOT (Department of Transportation)	$52,343	0.1%	Rank history: #5 in FY2021, #8 in FY2022, #41 in FY2023 and #12 in FY2025; up 3 since FY2023.
39	Jenkins Construction Inc. Top agencies DOT (Department of Transportation)	$48,850	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Schindler Elevator Corporation 2 awardees, including Slade Industries, Inc. Top agencies DOT (Department of Transportation)	$41,481	<0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and #37 in FY2025; up 22 since FY2023.
41	Nelcy Construction Corp Top agencies DOT (Department of Transportation)	$35,502	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	Frontline King George JV LLC Top agencies DOT (Department of Transportation)	$31,244	<0.1%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #18 in FY2025; down 39 since FY2023.
43	Invertice Inc. Top agencies DOT (Department of Transportation)	$30,227	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
44	CGH Technologies Inc. Top agencies DOT (Department of Transportation)	$29,491	<0.1%	Rank history: not on the FY2021 list, #54 in FY2022, #70 in FY2023 and not on the FY2025 list; up 26 since FY2023.
45	Stanley Elevator Company, Inc. Top agencies DOT (Department of Transportation)	$29,280	<0.1%	Rank history: not on the FY2021 list, #53 in FY2022, #55 in FY2023 and #43 in FY2025; up 10 since FY2023.
46	Johnson Controls Industries Through Johnson Controls, Inc. Top agencies DOT (Department of Transportation)	$28,031	<0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and not on the FY2025 list; up 10 since FY2023.
47	Radice Enterprises, LLC Top agencies DOT (Department of Transportation)	$25,780	<0.1%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023 and not on the FY2025 list; down 26 since FY2023.
48	US Service Solutions LLC Top agencies DOT (Department of Transportation)	$19,933	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
49	Core Consolidated LLC Top agencies DOT (Department of Transportation)	$17,712	<0.1%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2023 and #46 in FY2025; down 37 since FY2023.
50	Brice Solutions, LLC Top agencies DOT (Department of Transportation)	$16,453	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	KEO & Associates Inc. Top agencies DOT (Department of Transportation)	$14,560	<0.1%	Rank history: #16 in FY2021, not on the FY2022 list, #32 in FY2023 and not on the FY2025 list; down 19 since FY2023.
52	Str-Speechtech Limited Top agencies DHS (Department of Homeland Security)	$3,500	<0.1%	Rank history: #45 in FY2021, #56 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
53	Skyline Elevator, Inc. Top agencies DOT (Department of Transportation)	$2,800	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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 $97.4 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 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