Top 100 Contractors in NAICS 56179: Other Services to Buildings and Dwellings, FY2023

Name: Top 100 Contractors in NAICS 56179: Other Services to Buildings and Dwellings, FY2023
Creator: GovTribe

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

The top 10 won 27% of FY2023 NAICS 56179 contract dollars

Contract obligations: $68,466,003 Net of deobligations, by contracts coded NAICS 56179 or a code under it
Contractors: 466 Parent companies with an obligation
Largest contractor: CWS Marketing Group, Inc. $6.49 million, 8.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	CWS Marketing Group, Inc. Top agencies Treasury (Department of the Treasury)	$6,485,590	8.0%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2024 and #1 in FY2025; new.
2	DWC Building Construction Company Top agencies Army (Department of the Army)	$2,311,605	2.9%	Rank history: #2 in FY2021, #3 in FY2022, #2 in FY2024 and not on the FY2025 list; up 1 since FY2022.
3	GMB Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$2,203,228	2.7%	Rank history: #52 in FY2021, #20 in FY2022, #11 in FY2024 and #4 in FY2025; up 17 since FY2022.
4	Inductive Ventures, Inc. Top agencies DLA (Defense Logistics Agency)	$1,995,978	2.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
5	United States Metal Powders Incorporated Through Ampal Inc. Top agencies DLA (Defense Logistics Agency)	$1,946,415	2.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
6	Mentis Sciences Inc Top agencies DLA (Defense Logistics Agency)	$1,922,413	2.4%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2024 and not on the FY2025 list; new.
7	Chicago Iron Works Corporation Through National Air Duct Maintenance Corp Top agencies VA (Department of Veterans Affairs)	$1,741,950	2.1%	Rank history: #24 in FY2021, #48 in FY2022, #4 in FY2024 and not on the FY2025 list; up 41 since FY2022.
8	Kotobuki Shoji Limited Top agencies USAF (Department of the Air Force)	$1,273,276	1.6%	Rank history: #9 in FY2021, #17 in FY2022, #7 in FY2024 and #8 in FY2025; up 9 since FY2022.
9	Goodwill Industries of San Antonio Contract Services Top agencies USAF (Department of the Air Force)	$1,183,048	1.5%	Rank history: #7 in FY2021, #19 in FY2022, #6 in FY2024 and #7 in FY2025; up 10 since FY2022.
10	Chugach Alaska Corporation Through Chugach Solutions Enterprise, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,163,443	1.4%	Rank history: not on the FY2021 list, #97 in FY2022 and not on the FY2024–FY2025 lists; up 87 since FY2022.
11	Premier Mechanical Group Inc. Top agencies Navy (Department of the Navy)	$1,051,383	1.3%	Rank history: not on the FY2021 list, #45 in FY2022, #25 in FY2024 and #42 in FY2025; up 34 since FY2022.
12	E & S Construction, LLC Top agencies Army (Department of the Army)	$1,046,636	1.3%	Rank history: #10 in FY2021, #41 in FY2022, #5 in FY2024 and #6 in FY2025; up 29 since FY2022.
13	Magwerks Vision Inc. Top agencies DLA (Defense Logistics Agency)	$1,000,000	1.2%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2024 and not on the FY2025 list; new.
14	Biomass Energy Systems Inc. Top agencies DLA (Defense Logistics Agency)	$1,000,000	1.2%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2024 and not on the FY2025 list; new.
15	Ultramet Top agencies DLA (Defense Logistics Agency)	$1,000,000	1.2%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2024 and not on the FY2025 list; new.
16	AMG Engineering and Machining, Inc. Top agencies DLA (Defense Logistics Agency)	$969,414	1.2%	Rank history: not on the FY2021 list, #39 in FY2022 and not on the FY2024–FY2025 lists; up 23 since FY2022.
17	Solve Technology and Research Inc. Top agencies DLA (Defense Logistics Agency)	$950,977	1.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
18	Elrim Construction Co., Ltd. Top agencies Army (Department of the Army)	$948,763	1.2%	Rank history: #15 in FY2021, #38 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
19	Sand Springs Development Corporation Top agencies VA (Department of Veterans Affairs)	$943,552	1.2%	Rank history: not on the FY2021 list, #24 in FY2022, #14 in FY2024 and #12 in FY2025; up 5 since FY2022.
20	Advanced Magnet Lab Inc. Top agencies DLA (Defense Logistics Agency)	$900,000	1.1%	Rank history: not on the FY2021 list, #18 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
21	Kaney Aerospace Inc. Top agencies DLA (Defense Logistics Agency)	$899,948	1.1%	Rank history: not on the FY2021 list, #31 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
22	Mission Contracting Inc. Top agencies Commerce (Department of Commerce)	$894,184	1.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Nanosonic Inc. Top agencies WHS (DOD Washington Headquarters Service)	$800,000	1.0%	Rank history: not on the FY2021 list, #29 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
24	Permatect Facility Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$763,330	0.9%	Rank history: not on the FY2021 list, #53 in FY2022, #33 in FY2024 and #32 in FY2025; up 29 since FY2022.
25	Micro-Precision Technologies, Inc. Top agencies DLA (Defense Logistics Agency)	$755,647	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
26	James L. Gallagher, Inc. Top agencies DLA (Defense Logistics Agency)	$750,000	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
27	Form Fit & Function LLC Top agencies DLA (Defense Logistics Agency)	$737,514	0.9%	Rank history: not on the FY2021 list, #36 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
28	United Pool Maintenance LLC 2 awardees Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) Army (Department of the Army)	$727,237	0.9%	Rank history: #53 in FY2021, #67 in FY2022, #8 in FY2024 and #9 in FY2025; up 39 since FY2022.
29	South Eastern General Contracting, Inc. Top agencies Army (Department of the Army)	$704,850	0.9%	Rank history: not on the FY2021 list, #52 in FY2022, #20 in FY2024 and #16 in FY2025; up 23 since FY2022.
30	Shield Services LLC Top agencies Army (Department of the Army)	$681,741	0.8%	Rank history: #11 in FY2021, #15 in FY2022, #10 in FY2024 and #3 in FY2025; down 15 since FY2022.
31	Sageone, Inc. Top agencies Army (Department of the Army)	$658,242	0.8%	Rank history: #55 in FY2021, #58 in FY2022 and not on the FY2024–FY2025 lists; up 27 since FY2022.
32	M&C Venture Group, LLC Top agencies VA (Department of Veterans Affairs)	$624,990	0.8%	Rank history: #18 in FY2021, #46 in FY2022 and not on the FY2024–FY2025 lists; up 14 since FY2022.
33	Haas II, Eugene C Top agencies USAF (Department of the Air Force)	$624,165	0.8%	Rank history: #19 in FY2021, #79 in FY2022, #42 in FY2024 and #73 in FY2025; up 46 since FY2022.
34	Air FLO Cleaning Systems LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) Army (Department of the Army)	$616,823	0.8%	Rank history: #27 in FY2021, #42 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
35	Goodwill Industries of North Georgia, Inc. Top agencies HHS (Department of Health and Human Services)	$583,008	0.7%	Rank history: #1 in FY2021, #1 in FY2022 and not on the FY2024–FY2025 lists; down 34 since FY2022.
36	F3 Solutions LLC Top agencies USAF (Department of the Air Force)	$557,070	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	O.m.u.p. Enterprises, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$505,780	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 79 since FY2022.
38	Renaissance Services Inc Top agencies DLA (Defense Logistics Agency)	$495,982	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Hughes Environmental Inc. Top agencies DOT (Department of Transportation) Navy (Department of the Navy)	$486,615	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 382 since FY2022.
40	Jordon Construction Company L.l.c Top agencies Army (Department of the Army)	$457,908	0.6%	Rank history: not on the FY2021 list, #55 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
41	Gema Contractor Service Corp. Top agencies VA (Department of Veterans Affairs)	$433,533	0.5%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2024 and #30 in FY2025; new.
42	Eagle Pro Clean Inc. Top agencies Navy (Department of the Navy)	$413,173	0.5%	Rank history: #36 in FY2021, #57 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
43	Talon Veteran Services Incorporated Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$392,443	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	K & K Auto Body, Garage, & Truck Service, Inc. Top agencies VA (Department of Veterans Affairs)	$392,000	0.5%	Rank history: not on the FY2021 list, #59 in FY2022, #37 in FY2024 and #34 in FY2025; up 15 since FY2022.
45	S-T Acquisition Co LLC Top agencies VA (Department of Veterans Affairs)	$390,546	0.5%	Rank history: #25 in FY2021, #51 in FY2022, #49 in FY2024 and #75 in FY2025; up 6 since FY2022.
46	Boston Engineering Corporation Top agencies DLA (Defense Logistics Agency)	$370,000	0.5%	Rank history: not on the FY2021 list, #9 in FY2022 and not on the FY2024–FY2025 lists; down 37 since FY2022.
47	New Techno Team LLC Top agencies Army (Department of the Army)	$364,454	0.4%	Rank history: #61 in FY2021, #61 in FY2022, #34 in FY2024 and #63 in FY2025; up 14 since FY2022.
48	MCC Industries Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$357,664	0.4%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2024 and #33 in FY2025; up 228 since FY2022.
49	CCR Sales & Service, LLC Top agencies GSA (General Services Administration)	$356,561	0.4%	Rank history: #38 in FY2021, #56 in FY2022, #39 in FY2024 and #31 in FY2025; up 7 since FY2022.
50	US Vents, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$352,044	0.4%	Rank history: #39 in FY2021, #100 in FY2022, #41 in FY2024 and #50 in FY2025; up 50 since FY2022.
51	Mechanical Resources Incorporated Top agencies Navy (Department of the Navy)	$327,520	0.4%	Rank history: #48 in FY2021, #66 in FY2022, not on the FY2024 list and #28 in FY2025; up 15 since FY2022.
52	VIP Special Services LLC Top agencies VA (Department of Veterans Affairs)	$320,380	0.4%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2024 and #35 in FY2025; up 108 since FY2022.
53	Sanford Federal, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$310,713	0.4%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2024 and not on the FY2025 list; up 220 since FY2022.
54	American Engineering Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$270,922	0.3%	Rank history: not on the FY2021 list, #83 in FY2022 and not on the FY2024–FY2025 lists; up 29 since FY2022.
55	Gulf Geoexchange and Consulting Services, Inc. Top agencies VA (Department of Veterans Affairs)	$267,354	0.3%	Rank history: #43 in FY2021, #81 in FY2022, #45 in FY2024 and #58 in FY2025; up 26 since FY2022.
56	Ingot Ventilation Services Limited Top agencies USAF (Department of the Air Force)	$267,215	0.3%	Rank history: #40 in FY2021, #65 in FY2022, #52 in FY2024 and #49 in FY2025; up 9 since FY2022.
57	Emerald Resource, LLC Top agencies USDA (Department of Agriculture)	$266,777	0.3%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2024 and #13 in FY2025; new.
58	Mikon Services and Consultants, LLC Top agencies USAF (Department of the Air Force)	$255,160	0.3%	Rank history: #71 in FY2021, #89 in FY2022, #64 in FY2024 and #47 in FY2025; up 31 since FY2022.
59	Suda Building Maintenance Co., Ltd. Top agencies USAF (Department of the Air Force)	$255,158	0.3%	Rank history: #50 in FY2021, #74 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
60	E.r. Bakey Inc. Top agencies VA (Department of Veterans Affairs)	$250,000	0.3%	Rank history: #54 in FY2021, #80 in FY2022, #55 in FY2024 and #45 in FY2025; up 20 since FY2022.
61	Horizon Solution Company Top agencies Army (Department of the Army)	$250,000	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 69 since FY2022.
62	Ems Ice, Inc. Top agencies Navy (Department of the Navy)	$249,216	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Advanced Future Group International Gen. Trading & Cont. Co. WLL Top agencies Army (Department of the Army)	$242,490	0.3%	Rank history: #46 in FY2021, #82 in FY2022 and not on the FY2024–FY2025 lists; up 19 since FY2022.
64	Seokwang Industry Top agencies Army (Department of the Army)	$236,822	0.3%	Rank history: not on the FY2021 list, #88 in FY2022, #68 in FY2024 and #57 in FY2025; up 24 since FY2022.
65	CSP MGT LLC Top agencies VA (Department of Veterans Affairs)	$236,726	0.3%	Rank history: #57 in FY2021, #87 in FY2022, #100 in FY2024 and not on the FY2025 list; up 22 since FY2022.
66	Discount Hood Cleaning Top agencies USAF (Department of the Air Force)	$215,100	0.3%	Rank history: #66 in FY2021, #90 in FY2022, #56 in FY2024 and #59 in FY2025; up 24 since FY2022.
67	Impianti Elettrici Miele S.R.L. - Unipersonale Top agencies Army (Department of the Army)	$209,956	0.3%	Rank history: not on the FY2021 list, #84 in FY2022, #81 in FY2024 and #60 in FY2025; up 17 since FY2022.
68	Superior Tasking Advantage Contracting, Inc. Top agencies Navy (Department of the Navy)	$206,784	0.3%	Rank history: #73 in FY2021, #99 in FY2022, #59 in FY2024 and #61 in FY2025; up 31 since FY2022.
69	Advanced Underground Inspection LLC Top agencies Army (Department of the Army)	$202,174	0.2%	Rank history: #99 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 39 since FY2022.
70	Veterans Facility Services, Inc. Top agencies GSA (General Services Administration)	$199,109	0.2%	Rank history: #16 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
71	ICD Builders, Incorporated Top agencies Army (Department of the Army)	$198,395	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 220 since FY2022.
72	Antonio C. Mendoza III Top agencies USAF (Department of the Air Force)	$188,102	0.2%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2024 and #41 in FY2025; new.
73	H.v.a.c. LLC Top agencies USAF (Department of the Air Force)	$187,415	0.2%	Rank history: #79 in FY2021, #92 in FY2022, #62 in FY2024 and #62 in FY2025; up 19 since FY2022.
74	Keys Well Drilling Company Inc Top agencies DOT (Department of Transportation)	$185,200	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
75	Aveco Holding AG Through Wisag Technical Military Support Services GMBH & Co. KG Top agencies USAF (Department of the Air Force)	$180,726	0.2%	Rank history: #92 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 38 since FY2022.
76	Monahan's Contracting, LLC Top agencies Army (Department of the Army)	$171,230	0.2%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2024 and not on the FY2025 list; up 26 since FY2022.
77	Kunkle S Electrical Servi Top agencies Army (Department of the Army)	$170,910	0.2%	Rank history: #77 in FY2021, #98 in FY2022, #70 in FY2024 and not on the FY2025 list; up 21 since FY2022.
78	J. Marchese and Sons, Inc. Top agencies DOI (Department of the Interior)	$166,625	0.2%	Rank history: #82 in FY2021, not on the FY2022 list, #73 in FY2024 and #79 in FY2025; up 28 since FY2022.
79	Blackmon-Mooring Steamatic Cat Through BMS Cat, LLC Top agencies VA (Department of Veterans Affairs)	$165,254	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Midwest Mowing, Inc. Top agencies Army (Department of the Army)	$157,857	0.2%	Rank history: #29 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
81	Mainstream Engineering Corp Top agencies DLA (Defense Logistics Agency)	$153,030	0.2%	Rank history: not on the FY2021 list, #70 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
82	Safety-Hood Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$152,735	0.2%	Rank history: #90 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 22 since FY2022.
83	Princeton Professional Services, LLC Top agencies Army (Department of the Army)	$145,635	0.2%	Rank history: #65 in FY2021, #76 in FY2022, #95 in FY2024 and not on the FY2025 list; down 7 since FY2022.
84	Alex Figueiredo Inc. Top agencies VA (Department of Veterans Affairs)	$144,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2024 and not on the FY2025 list; new.
85	Awalix, LLC Top agencies DHS (Department of Homeland Security) Commerce (Department of Commerce)	$142,672	0.2%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2024 and #82 in FY2025; up 121 since FY2022.
86	3C Coninco Joint Stock Company Top agencies DOS (Department of State)	$142,079	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	Pro Finish Plus, LLC Top agencies DOI (Department of the Interior)	$136,600	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
88	I-2-I Solutions, Inc. Top agencies DHS (Department of Homeland Security)	$136,228	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #21 in FY2025; new.
89	Protec Facility Solutions GMBH Top agencies Army (Department of the Army)	$132,677	0.2%	Rank history: #91 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 26 since FY2022.
90	Coles Group (The) LLC Top agencies Army (Department of the Army)	$128,974	0.2%	Rank history: #31 in FY2021, #93 in FY2022, not on the FY2024 list and #95 in FY2025; up 3 since FY2022.
91	Alvin Ziegler Top agencies Army (Department of the Army)	$125,344	0.2%	Rank history: #23 in FY2021, #62 in FY2022, #28 in FY2024 and #36 in FY2025; down 29 since FY2022.
92	Advance Lawn Service Co LLC Top agencies Army (Department of the Army)	$124,950	0.2%	Rank history: #32 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 45 since FY2022.
93	MRS Enterprises, Incorporated Top agencies Army (Department of the Army)	$121,008	0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2024 and #94 in FY2025; new.
94	Paul Davis Restoration Inc. Top agencies GSA (General Services Administration)	$120,816	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Interior Maintenance Company Top agencies VA (Department of Veterans Affairs)	$120,399	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 33 since FY2022.
96	Johnsondanforth, Inc. Top agencies VA (Department of Veterans Affairs)	$119,740	0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2024 and #91 in FY2025; up 15 since FY2022.
97	Dllc - Dupree Landscaping & Lawn Care LLC Top agencies Army (Department of the Army)	$119,192	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 166 since FY2022.
98	JHL Support Services LLC Top agencies VA (Department of Veterans Affairs)	$117,900	0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2024 and #93 in FY2025; up 9 since FY2022.
99	Power Washing Extreme, Inc. (Dba) Pwe, Inc. Top agencies Army (Department of the Army)	$116,500	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2024 and not on the FY2025 list; up 34 since FY2022.
100	Richard D. Postulka Top agencies Army (Department of the Army)	$114,925	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #88 in FY2025; new.

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100 of 466 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 56179

Code	Net obligations	Largest contractor
561790 Other Services to Buildings and Dwellings	$68,466,003	CWS Marketing Group, Inc.

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 $81 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 NAICS 56179 contractors in FY2023?

1. CWS Marketing Group, Inc. ($6.49M), 2. DWC Building Construction Company ($2.31M), 3. GMB Inc. ($2.2M), 4. Inductive Ventures, Inc. ($2M), 5. United States Metal Powders Incorporated ($1.95M), 6. Mentis Sciences Inc ($1.92M), 7. Chicago Iron Works Corporation ($1.74M), 8. Kotobuki Shoji Limited ($1.27M), 9. Goodwill Industries of San Antonio Contract Services ($1.18M), 10. Chugach Alaska Corporation ($1.16M).

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