Top 100 Contractors in NAICS 54135: Building Inspection Services, FY2025

Name: Top 100 Contractors in NAICS 54135: Building Inspection Services, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 57% of FY2025 NAICS 54135 contract dollars

Contract obligations: $171,685,954 Net of deobligations, by contracts coded NAICS 54135 or a code under it
Contractors: 262 Parent companies with an obligation
Largest contractor: Vanguard Inspection Services $62.4 million, 23.7% 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	Vanguard Inspection Services Top agencies DHS (Department of Homeland Security)	$62,397,066	23.7%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #2 in FY2024; up 1 since FY2024.
2	Golder Europe Service Centre SRL Through WSP USA Services Inc. Top agencies DHS (Department of Homeland Security)	$44,132,143	16.7%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2024; down 1 since FY2024.
3	Institute for Building Technology and Safety Top agencies HUD (Department of Housing and Urban Development)	$9,177,110	3.5%	Rank history: #3 in FY2021, #5 in FY2022, #5 in FY2023 and not on the FY2024 list; returned.
4	Jll-Rer Solutions, LLC Top agencies Army (Department of the Army)	$7,293,845	2.8%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #3 in FY2024; down 1 since FY2024.
5	Tribal One Technology, LLC Top agencies USDA (Department of Agriculture) HUD (Department of Housing and Urban Development)	$7,117,345	2.7%	Rank history: not on the FY2021 list, #8 in FY2022, #4 in FY2023 and #4 in FY2024; down 1 since FY2024.
6	Belcan Government Solutions, Inc. Top agencies USAF (Department of the Air Force)	$5,828,835	2.2%	Rank history: not on the FY2021–FY2024 lists; new.
7	Sawdey Solution Services Inc. Top agencies USAF (Department of the Air Force)	$4,448,041	1.7%	Rank history: not on the FY2021–FY2024 lists; new.
8	ABT Global LLC Top agencies HHS (Department of Health and Human Services)	$3,522,849	1.3%	Rank history: not on the FY2021–FY2024 lists; new.
9	BAE Systems Through BAE Systems Technology Solutions & Services Inc. Top agencies DHS (Department of Homeland Security)	$3,515,374	1.3%	Rank history: not on the FY2021–FY2024 lists; new.
10	Mathematica Inc. Top agencies HHS (Department of Health and Human Services)	$1,500,249	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
11	Blue Construction Services LLC Top agencies Army (Department of the Army)	$1,327,140	0.5%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 2 since FY2024.
12	Data Computer Corporation of America Top agencies USAF (Department of the Air Force)	$1,273,045	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
13	RBA Group the Through NV5 Consultants, Inc. Top agencies Smithsonian (Smithsonian Institution)	$1,253,016	0.5%	Rank history: #13 in FY2021, #59 in FY2022, #81 in FY2023 and #61 in FY2024; up 48 since FY2024.
14	Analex Corporation Top agencies Army (Department of the Army)	$970,000	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
15	PMA Associates, Inc. Top agencies HUD (Department of Housing and Urban Development)	$904,616	0.3%	Rank history: #6 in FY2021, #9 in FY2022, #8 in FY2023 and not on the FY2024 list; returned.
16	New Horizon Design and Construction Management Company Limited Top agencies Army (Department of the Army)	$739,358	0.3%	Rank history: #22 in FY2021, #41 in FY2022, #22 in FY2023 and #34 in FY2024; up 18 since FY2024.
17	Parsons Corporation Through Parsons Government Services Inc. Top agencies Navy (Department of the Navy)	$627,298	0.2%	Rank history: #10 in FY2021, #72 in FY2022, #12 in FY2023 and #7 in FY2024; down 10 since FY2024.
18	Blackhawk Construction LLC Top agencies VA (Department of Veterans Affairs)	$533,085	0.2%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023 and #16 in FY2024; down 2 since FY2024.
19	Arias-Guardia & Asoc. Top agencies Smithsonian (Smithsonian Institution)	$526,412	0.2%	Rank history: #71 in FY2021, #23 in FY2022, #18 in FY2023 and #17 in FY2024; down 2 since FY2024.
20	Rivertech LLC Top agencies DHS (Department of Homeland Security)	$516,563	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
21	Carcongroup Engineering PSC Top agencies DHS (Department of Homeland Security)	$514,220	0.2%	Rank history: #14 in FY2021, #18 in FY2022, #15 in FY2023 and #11 in FY2024; down 10 since FY2024.
22	Global, Inc. Top agencies HHS (Department of Health and Human Services)	$445,426	0.2%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; down 7 since FY2024.
23	Southco Services LLC Top agencies VA (Department of Veterans Affairs)	$444,289	0.2%	Rank history: #61 in FY2021, #24 in FY2022, #21 in FY2023 and #20 in FY2024; down 3 since FY2024.
24	Georgia Commercial and Residential Elevator, LLC Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico) USAF (Department of the Air Force)	$415,046	0.2%	Rank history: not on the FY2021 list, #51 in FY2022, not on the FY2023 list and #94 in FY2024; up 70 since FY2024.
25	General Service Contracting, LLC Top agencies VA (Department of Veterans Affairs)	$409,364	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
26	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs)	$376,387	0.1%	Rank history: not on the FY2021–FY2024 lists; up 85 since FY2024.
27	Knowesis, Inc. Top agencies DHA (Defense Health Agency)	$363,760	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
28	Dayton Group Inc Top agencies DOE (Department of Energy)	$350,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
29	Bryant Power Solutions L.l.c Top agencies VA (Department of Veterans Affairs)	$335,975	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
30	Rd3, Inc. Top agencies GSA (General Services Administration) Commerce (Department of Commerce) SSA (Social Security Administration)	$275,812	0.1%	Rank history: #57 in FY2021, #32 in FY2022, #16 in FY2023 and #25 in FY2024; down 5 since FY2024.
31	Diversified Site Services LLC Top agencies VA (Department of Veterans Affairs)	$268,300	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
32	Southern Aire Contracting, Inc. Top agencies Army (Department of the Army)	$246,961	0.1%	Rank history: #27 in FY2021, #28 in FY2022, #29 in FY2023 and #27 in FY2024; down 5 since FY2024.
33	Hughes Environmental Inc. Top agencies VA (Department of Veterans Affairs)	$236,131	0.1%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and not on the FY2024 list; returned.
34	Eaton Corporation Top agencies DOS (Department of State)	$231,280	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
35	Atlantic First Industries Corporation Top agencies VA (Department of Veterans Affairs)	$226,387	0.1%	Rank history: #41 in FY2021, #42 in FY2022, #33 in FY2023 and #18 in FY2024; down 17 since FY2024.
36	Lalini Enterprises LLC Top agencies Army (Department of the Army)	$225,269	0.1%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2024; up 9 since FY2024.
37	Tekton CC, LLC Top agencies VA (Department of Veterans Affairs)	$220,245	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #43 in FY2024; up 6 since FY2024.
38	Arcadis N.V. Through Arcadis Consulting (Uk) Limited Top agencies USAF (Department of the Air Force)	$211,031	0.1%	Rank history: not on the FY2021 list, #15 in FY2022, #14 in FY2023 and #13 in FY2024; down 25 since FY2024.
39	Temperature Control Services, L.L.C. Top agencies DOS (Department of State)	$208,060	0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; up 24 since FY2024.
40	DAV Energy Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$200,039	0.1%	Rank history: #11 in FY2021, #13 in FY2022, #37 in FY2023 and not on the FY2024 list; returned.
41	Fire Protection Service Corp Top agencies VA (Department of Veterans Affairs)	$198,314	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
42	WRG Fire Training Simulation Systems Inc. Top agencies USAF (Department of the Air Force)	$192,115	0.1%	Rank history: not on the FY2021–FY2024 lists; up 139 since FY2024.
43	Territory Horticulture Top agencies DOS (Department of State)	$191,070	0.1%	Rank history: #23 in FY2021, #30 in FY2022, #26 in FY2023 and #26 in FY2024; down 17 since FY2024.
44	Prime Projects International (Construction ) Limited Top agencies DOS (Department of State)	$189,788	0.1%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2024; up 2 since FY2024.
45	SDV Services, Inc. Top agencies VA (Department of Veterans Affairs)	$187,780	0.1%	Rank history: not on the FY2021 list, #39 in FY2022, #34 in FY2023 and #41 in FY2024; down 4 since FY2024.
46	Veterans Fire and Life Safety Corporation Top agencies VA (Department of Veterans Affairs)	$185,688	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and #33 in FY2024; down 13 since FY2024.
47	National Facility Solutions LLC Through Enviros LLC Top agencies VA (Department of Veterans Affairs)	$179,345	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
48	Mccright & Associates, LLC Top agencies USDA (Department of Agriculture)	$176,718	0.1%	Rank history: not on the FY2021 list, #61 in FY2022, #44 in FY2023 and #29 in FY2024; down 19 since FY2024.
49	Einhäupl Gesellschaft MIT Beschränkter Haftung Top agencies Army (Department of the Army)	$169,262	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
50	Windjammer Environmental LLC Top agencies USDA (Department of Agriculture)	$167,811	0.1%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; down 14 since FY2024.
51	Final Limit Elevator Inspections LLC Top agencies VA (Department of Veterans Affairs)	$153,601	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #49 in FY2024; down 2 since FY2024.
52	Isaiah Engineering, Inc. Top agencies USDA (Department of Agriculture)	$153,585	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
53	JHC Fire Containment Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$150,919	0.1%	Rank history: #42 in FY2021, #31 in FY2022, #51 in FY2023 and #57 in FY2024; up 4 since FY2024.
54	Reliant Elevator Inspections & Consulting, Inc. Top agencies DOT (Department of Transportation)	$138,590	0.1%	Rank history: #64 in FY2021, not on the FY2022 list, #20 in FY2023 and #85 in FY2024; up 31 since FY2024.
55	Atis Elevator Inspections LLC Top agencies Smithsonian (Smithsonian Institution)	$137,954	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
56	Inspection Experts Inc. Top agencies DOS (Department of State)	$136,374	0.1%	Rank history: #83 in FY2021, #81 in FY2022, #52 in FY2023 and not on the FY2024 list; up 73 since FY2024.
57	DB Netz Aktiengesellschaft Through DB Infrago Aktiengesellschaft Top agencies Army (Department of the Army)	$136,231	0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2024; down 13 since FY2024.
58	Mcdonough Bolyard Peck, Inc. Top agencies Smithsonian (Smithsonian Institution)	$130,768	<0.1%	Rank history: #7 in FY2021, #11 in FY2022, #59 in FY2023 and #60 in FY2024; up 2 since FY2024.
59	Design for Health Environmental Education Center, Pacific Rim Division, Inc. Top agencies VA (Department of Veterans Affairs)	$128,510	<0.1%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; down 17 since FY2024.
60	Arkom Interneshnl Dooel Top agencies DOS (Department of State)	$127,538	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
61	Azimuth Contracting, LLC Top agencies VA (Department of Veterans Affairs)	$127,100	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
62	Insparisk, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$126,714	<0.1%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and #86 in FY2024; up 24 since FY2024.
63	Access North Ltd Top agencies DOS (Department of State)	$125,150	<0.1%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #48 in FY2024; down 15 since FY2024.
64	Catalyst Diving, Inc. Top agencies DOI (Department of the Interior)	$125,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
65	Community Fire Protection Top agencies DOI (Department of the Interior)	$118,610	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
66	First American Federal Contracting LLC Top agencies DOI (Department of the Interior)	$117,983	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
67	Summit Fire Protection Co. 2 awardees, including Summit Fire & Security LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$115,782	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
68	Optimum Low Voltage LLC Top agencies DOI (Department of the Interior) DHS (Department of Homeland Security)	$113,604	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
69	Aurora Industrial Hygiene Top agencies VA (Department of Veterans Affairs)	$111,566	<0.1%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and #22 in FY2024; down 47 since FY2024.
70	Multivariable Systems Tech, LLC Top agencies USAF (Department of the Air Force)	$102,400	<0.1%	Rank history: #46 in FY2021, not on the FY2022–FY2023 lists and #52 in FY2024; down 18 since FY2024.
71	Wrga Fire Training Solutions Inc. Top agencies USAF (Department of the Air Force)	$102,130	<0.1%	Rank history: #34 in FY2021, #43 in FY2022, #28 in FY2023 and #39 in FY2024; down 32 since FY2024.
72	J. Groenewald Properties CC Top agencies DOS (Department of State)	$101,882	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
73	Integrity Control Systems Inc. Top agencies DOS (Department of State)	$100,304	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	Innovative Support Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$97,929	<0.1%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; down 36 since FY2024.
75	EDL Construction Inc. Top agencies USAF (Department of the Air Force)	$95,346	<0.1%	Rank history: not on the FY2021 list, #46 in FY2022, not on the FY2023 list and #56 in FY2024; down 19 since FY2024.
76	Estudios Edificaciones E Interventorias En Ingenieria Eeii S A S Top agencies DOS (Department of State)	$90,046	<0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2024; down 21 since FY2024.
77	Szpm-Alpha Mpjv Top agencies USDA (Department of Agriculture)	$87,058	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
78	Barque Consulting, LLC Top agencies VA (Department of Veterans Affairs)	$81,611	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
79	Home Maintenance Group LLC Top agencies VA (Department of Veterans Affairs)	$79,759	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
80	Bright Green Limited Top agencies DOS (Department of State)	$79,076	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
81	TRU Vantage Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$75,281	<0.1%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2024; down 10 since FY2024.
82	Caldaia Controls LLC Top agencies VA (Department of Veterans Affairs)	$73,500	<0.1%	Rank history: #70 in FY2021, #62 in FY2022, not on the FY2023 list and #40 in FY2024; down 42 since FY2024.
83	Brainstorm Technologies LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$73,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
84	Aerospace Facilities Group, Inc. Top agencies USAF (Department of the Air Force)	$72,391	<0.1%	Rank history: not on the FY2021 list, #75 in FY2022, #72 in FY2023 and #79 in FY2024; down 5 since FY2024.
85	Industrial Supply Co Inc. Top agencies USAF (Department of the Air Force)	$71,398	<0.1%	Rank history: #16 in FY2021, #40 in FY2022, #76 in FY2023 and #70 in FY2024; down 15 since FY2024.
86	CAI Safety Systems Inc Top agencies USAF (Department of the Air Force)	$70,465	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 85 since FY2024.
87	Eleven Bravo Group, LLC Top agencies VA (Department of Veterans Affairs)	$70,036	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
88	Heat Group Ltd Top agencies Army (Department of the Army)	$68,250	<0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #77 in FY2023 and #72 in FY2024; down 16 since FY2024.
89	Alabama Controls, Inc. Top agencies DOS (Department of State)	$65,894	<0.1%	Rank history: #66 in FY2021, not on the FY2022–FY2023 lists and #66 in FY2024; down 23 since FY2024.
90	Property & Environmental Management Inc. Top agencies DOJ (Department of Justice)	$65,737	<0.1%	Rank history: #19 in FY2021, #60 in FY2022, #56 in FY2023 and #53 in FY2024; down 37 since FY2024.
91	Winergy LLC Top agencies VA (Department of Veterans Affairs)	$65,412	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
92	Daexe Assessoria Executiva LTDA Top agencies DOS (Department of State)	$64,796	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
93	Haskoningdhv Nederland B.V. Through Haskoning Nederland B.V. Top agencies USAF (Department of the Air Force)	$64,234	<0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and not on the FY2024 list; up 28 since FY2024.
94	Constan Company Limited Top agencies DOS (Department of State)	$63,963	<0.1%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and not on the FY2024 list; returned.
95	Bradford Roof Management, Inc. Top agencies Army (Department of the Army)	$63,055	<0.1%	Rank history: #73 in FY2021, #90 in FY2022, #80 in FY2023 and #69 in FY2024; down 26 since FY2024.
96	Nancy ST Laurent Top agencies VA (Department of Veterans Affairs)	$62,842	<0.1%	Rank history: #78 in FY2021, #93 in FY2022, #58 in FY2023 and #77 in FY2024; down 19 since FY2024.
97	Tremco LLC Top agencies DOS (Department of State)	$62,720	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
98	J3 Enterprise LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$62,621	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 85 since FY2024.
99	Jake Marshall Service Inc. Top agencies DOS (Department of State)	$62,246	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Endevelopment L.L.C. Top agencies VA (Department of Veterans Affairs)	$61,446	<0.1%	Rank history: #92 in FY2021, not on the FY2022–FY2023 lists and #97 in FY2024; down 3 since FY2024.

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100 of 262 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54135

Code	Net obligations	Largest contractor
541350 Building Inspection Services	$171,685,954	Vanguard Inspection Services

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 $264 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 54135 contractors in FY2025?

1. Vanguard Inspection Services ($62.4M), 2. Golder Europe Service Centre SRL ($44.1M), 3. Institute for Building Technology and Safety ($9.18M), 4. Jll-Rer Solutions, LLC ($7.29M), 5. Tribal One Technology, LLC ($7.12M), 6. Belcan Government Solutions, Inc. ($5.83M), 7. Sawdey Solution Services Inc. ($4.45M), 8. ABT Global LLC ($3.52M), 9. BAE Systems ($3.52M), 10. Mathematica Inc. ($1.5M).

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