Top 100 Contractors in NAICS 54135: Building Inspection Services, FY2024

Name: Top 100 Contractors in NAICS 54135: Building Inspection Services, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 73% of FY2024 NAICS 54135 contract dollars

Contract obligations: $155,871,153 Net of deobligations, by contracts coded NAICS 54135 or a code under it
Contractors: 222 Parent companies with an obligation
Largest contractor: Golder Europe Service Centre SRL $66.4 million, 33.9% 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	Golder Europe Service Centre SRL Through WSP USA Services Inc. Top agencies DHS (Department of Homeland Security)	$66,397,131	33.9%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
2	Vanguard Inspection Services Top agencies DHS (Department of Homeland Security)	$30,053,530	15.4%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; down 1 since FY2023.
3	Jll-Rer Solutions, LLC Top agencies Army (Department of the Army)	$27,028,346	13.8%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #4 in FY2025; unchanged since FY2023.
4	Tribal One Technology, LLC Top agencies USDA (Department of Agriculture) HUD (Department of Housing and Urban Development)	$6,836,045	3.5%	Rank history: not on the FY2021 list, #8 in FY2022, #4 in FY2023 and #5 in FY2025; unchanged since FY2023.
5	Pond & Company Top agencies USAF (Department of the Air Force)	$5,677,566	2.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
6	Parsons Brinckerhoff Holdings Inc. Through WSP USA Services Inc. Top agencies DHS (Department of Homeland Security)	$4,298,373	2.2%	Rank history: #2 in FY2021, #2 in FY2022, #6 in FY2023 and not on the FY2025 list; unchanged since FY2023.
7	Parsons Corporation Through Parsons Government Services Inc. Top agencies Navy (Department of the Navy)	$688,493	0.4%	Rank history: #10 in FY2021, #72 in FY2022, #12 in FY2023 and #17 in FY2025; up 5 since FY2023.
8	Ati, Inc. Top agencies DOE (Department of Energy) DOS (Department of State)	$652,767	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
9	Blue Construction Services LLC Top agencies Army (Department of the Army)	$648,315	0.3%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
10	Project Solutions, Inc. Top agencies USDA (Department of Agriculture)	$596,931	0.3%	Rank history: #9 in FY2021, #21 in FY2022, #23 in FY2023 and not on the FY2025 list; up 13 since FY2023.
11	Carcongroup Engineering PSC Top agencies DHS (Department of Homeland Security)	$557,258	0.3%	Rank history: #14 in FY2021, #18 in FY2022, #15 in FY2023 and #21 in FY2025; up 4 since FY2023.
12	Chinook Systems Inc. Top agencies USAF (Department of the Air Force)	$544,482	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
13	Arcadis N.V. Through Arcadis Consulting (Uk) Limited Top agencies USAF (Department of the Air Force)	$437,518	0.2%	Rank history: not on the FY2021 list, #15 in FY2022, #14 in FY2023 and #38 in FY2025; up 1 since FY2023.
14	Walter Thomas & Associates, Incorporated Top agencies VA (Department of Veterans Affairs)	$422,075	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
15	Global, Inc. Top agencies HHS (Department of Health and Human Services)	$375,960	0.2%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2025; new.
16	Blackhawk Construction LLC Top agencies VA (Department of Veterans Affairs)	$349,115	0.2%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023 and #18 in FY2025; down 7 since FY2023.
17	Arias-Guardia & Asoc. Top agencies Smithsonian (Smithsonian Institution)	$347,816	0.2%	Rank history: #71 in FY2021, #23 in FY2022, #18 in FY2023 and #19 in FY2025; up 1 since FY2023.
18	Atlantic First Industries Corporation Top agencies VA (Department of Veterans Affairs)	$327,169	0.2%	Rank history: #41 in FY2021, #42 in FY2022, #33 in FY2023 and #35 in FY2025; up 15 since FY2023.
19	PC Brothers Company Through Serrano Proano Diseno Y Construccion S.A. Top agencies DOS (Department of State)	$312,556	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Southco Services LLC Top agencies VA (Department of Veterans Affairs)	$309,871	0.2%	Rank history: #61 in FY2021, #24 in FY2022, #21 in FY2023 and #23 in FY2025; up 1 since FY2023.
21	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs)	$296,462	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 191 since FY2023.
22	Aurora Industrial Hygiene Top agencies VA (Department of Veterans Affairs)	$291,716	0.1%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and #69 in FY2025; up 2 since FY2023.
23	Thomas A Carcaterra Pe LLC Top agencies Smithsonian (Smithsonian Institution)	$287,134	0.1%	Rank history: #32 in FY2021, #20 in FY2022, #10 in FY2023 and not on the FY2025 list; down 13 since FY2023.
24	MHM Services, Inc. Top agencies DOI (Department of the Interior)	$274,836	0.1%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023 and not on the FY2025 list; down 11 since FY2023.
25	Rd3, Inc. Top agencies GSA (General Services Administration) Commerce (Department of Commerce) VA (Department of Veterans Affairs)	$263,315	0.1%	Rank history: #57 in FY2021, #32 in FY2022, #16 in FY2023 and #30 in FY2025; down 9 since FY2023.
26	Territory Horticulture Top agencies DOS (Department of State)	$255,790	0.1%	Rank history: #23 in FY2021, #30 in FY2022, #26 in FY2023 and #43 in FY2025; unchanged since FY2023.
27	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 #32 in FY2025; up 2 since FY2023.
28	Eaton Corporation Top agencies DOS (Department of State)	$226,997	0.1%	Rank history: #29 in FY2021, #33 in FY2022, #32 in FY2023 and not on the FY2025 list; up 4 since FY2023.
29	Mccright & Associates, LLC Top agencies USDA (Department of Agriculture)	$212,558	0.1%	Rank history: not on the FY2021 list, #61 in FY2022, #44 in FY2023 and #48 in FY2025; up 15 since FY2023.
30	Pye-Barker Fire & Safety, LLC Through Fire Protection Service Corp Top agencies VA (Department of Veterans Affairs)	$201,272	0.1%	Rank history: not on the FY2021 list, #37 in FY2022, #35 in FY2023 and not on the FY2025 list; up 5 since FY2023.
31	Iveco SUD-West Nutzfahrzeuge GMBH Through Ati, Inc. Top agencies DOE (Department of Energy)	$200,000	0.1%	Rank history: #12 in FY2021, #27 in FY2022, #11 in FY2023 and not on the FY2025 list; down 20 since FY2023.
32	Jenson Fire Protection Inc Top agencies Army (Department of the Army)	$194,240	0.1%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023 and not on the FY2025 list; up 4 since FY2023.
33	Veterans Fire and Life Safety Corporation Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$164,712	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and #46 in FY2025; up 24 since FY2023.
34	New Horizon Design and Construction Management Company Limited Top agencies Army (Department of the Army)	$160,864	0.1%	Rank history: #22 in FY2021, #41 in FY2022, #22 in FY2023 and #16 in FY2025; down 12 since FY2023.
35	Healthcare Compliance Testing LLC Top agencies VA (Department of Veterans Affairs)	$152,994	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	Windjammer Environmental LLC Top agencies USDA (Department of Agriculture)	$150,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
37	HKA Elevator Consulting, Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts) GSA (General Services Administration)	$146,563	0.1%	Rank history: #99 in FY2021, not on the FY2022 list, #61 in FY2023 and not on the FY2025 list; up 24 since FY2023.
38	Innovative Support Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$139,085	0.1%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2025; up 95 since FY2023.
39	Wrga Fire Training Solutions Inc. Top agencies USAF (Department of the Air Force)	$134,525	0.1%	Rank history: #34 in FY2021, #43 in FY2022, #28 in FY2023 and #71 in FY2025; down 11 since FY2023.
40	Caldaia Controls LLC Top agencies VA (Department of Veterans Affairs)	$131,093	0.1%	Rank history: #70 in FY2021, #62 in FY2022, not on the FY2023 list and #82 in FY2025; returned.
41	SDV Services, Inc. Top agencies VA (Department of Veterans Affairs)	$128,185	0.1%	Rank history: not on the FY2021 list, #39 in FY2022, #34 in FY2023 and #45 in FY2025; down 7 since FY2023.
42	Design for Health Environmental Education Center, Pacific Rim Division, Inc. Top agencies VA (Department of Veterans Affairs)	$127,239	0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
43	Tekton CC, LLC Top agencies VA (Department of Veterans Affairs)	$123,747	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #37 in FY2025; up 27 since FY2023.
44	DB Netz Aktiengesellschaft Through DB Infrago Aktiengesellschaft Top agencies Army (Department of the Army)	$122,474	0.1%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; new.
45	Lalini Enterprises LLC Top agencies Army (Department of the Army)	$120,596	0.1%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
46	Prime Projects International (Construction ) Limited Top agencies DOS (Department of State)	$117,985	0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
47	STC World Wide LLC Top agencies DOS (Department of State)	$112,634	0.1%	Rank history: #36 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
48	Access North Ltd Top agencies DOS (Department of State)	$111,440	0.1%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023 and #63 in FY2025; down 17 since FY2023.
49	Final Limit Elevator Inspections LLC Top agencies VA (Department of Veterans Affairs)	$109,933	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #51 in FY2025; up 47 since FY2023.
50	Angela Rodrigues - Arquitectura LDA Top agencies DOS (Department of State)	$109,577	0.1%	Rank history: #67 in FY2021, #96 in FY2022, not on the FY2023 list and not on the FY2025 list; up 55 since FY2023.
51	Erga Group Sal Top agencies DOS (Department of State)	$108,500	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 112 since FY2023.
52	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 #70 in FY2025; returned.
53	Property & Environmental Management Inc. Top agencies DOJ (Department of Justice)	$100,000	0.1%	Rank history: #19 in FY2021, #60 in FY2022, #56 in FY2023 and #90 in FY2025; up 3 since FY2023.
54	Heidelberg Resources, LLC Top agencies VA (Department of Veterans Affairs)	$97,557	<0.1%	Rank history: #24 in FY2021, not on the FY2022 list, #75 in FY2023 and not on the FY2025 list; up 21 since FY2023.
55	Estudios Edificaciones E Interventorias En Ingenieria Eeii S A S Top agencies DOS (Department of State)	$96,344	<0.1%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2025; new.
56	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 #75 in FY2025; returned.
57	JHC Fire Containment Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$91,464	<0.1%	Rank history: #42 in FY2021, #31 in FY2022, #51 in FY2023 and #53 in FY2025; down 6 since FY2023.
58	Reasor Building Group LLC Top agencies USAF (Department of the Air Force)	$89,935	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
59	Benton Roofing, Inc. Top agencies VA (Department of Veterans Affairs)	$87,937	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Mcdonough Bolyard Peck, Inc. Top agencies Smithsonian (Smithsonian Institution)	$86,524	<0.1%	Rank history: #7 in FY2021, #11 in FY2022, #59 in FY2023 and #58 in FY2025; down 1 since FY2023.
61	RBA Group the Through NV5 Consultants, Inc. Top agencies Smithsonian (Smithsonian Institution)	$85,875	<0.1%	Rank history: #13 in FY2021, #59 in FY2022, #81 in FY2023 and #13 in FY2025; up 20 since FY2023.
62	IO Environmental and Infrastructure Incorporated Top agencies VA (Department of Veterans Affairs)	$84,482	<0.1%	Rank history: #72 in FY2021, #89 in FY2022, #74 in FY2023 and not on the FY2025 list; up 12 since FY2023.
63	Temperature Control Services, L.L.C. Top agencies DOS (Department of State)	$83,798	<0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
64	Sanirail Construction GMBH Top agencies Army (Department of the Army)	$83,690	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	Otis Elevator Company Through Otis Top agencies DOS (Department of State)	$80,372	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
66	Alabama Controls, Inc. Top agencies DOS (Department of State)	$75,367	<0.1%	Rank history: #66 in FY2021, not on the FY2022–FY2023 lists and #89 in FY2025; returned.
67	GCI Construction & Inspections LLC Top agencies USAF (Department of the Air Force)	$71,136	<0.1%	Rank history: not on the FY2021 list, #83 in FY2022, #73 in FY2023 and not on the FY2025 list; up 6 since FY2023.
68	Therma Holdings LLC Through Yearout Mechanical, LLC / Dba: Welch's Boiler Service, LLC Top agencies HHS (Department of Health and Human Services)	$70,930	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Bradford Roof Management, Inc. Top agencies Army (Department of the Army)	$68,986	<0.1%	Rank history: #73 in FY2021, #90 in FY2022, #80 in FY2023 and #95 in FY2025; up 11 since FY2023.
70	Industrial Supply Co Inc. Top agencies USAF (Department of the Air Force)	$68,705	<0.1%	Rank history: #16 in FY2021, #40 in FY2022, #76 in FY2023 and #85 in FY2025; up 6 since FY2023.
71	TRU Vantage Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$68,251	<0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; up 122 since FY2023.
72	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 #88 in FY2025; up 5 since FY2023.
73	Golden Relief Resources Ltd Top agencies DOS (Department of State)	$67,568	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	Valhalla Engineering Group LLC Top agencies VA (Department of Veterans Affairs)	$66,010	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 104 since FY2023.
75	I-2-I Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$64,433	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Nexus Construction Co. W.l.l Top agencies DOS (Department of State)	$63,262	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	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 #96 in FY2025; down 19 since FY2023.
78	Johnson Controls Building Automation Systems, LLC Top agencies DOS (Department of State)	$62,311	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Aerospace Facilities Group, Inc. Top agencies USAF (Department of the Air Force)	$60,417	<0.1%	Rank history: not on the FY2021 list, #75 in FY2022, #72 in FY2023 and #84 in FY2025; down 7 since FY2023.
80	Triangle Manifold Services, Inc. Top agencies VA (Department of Veterans Affairs)	$58,127	<0.1%	Rank history: #85 in FY2021, #95 in FY2022, #64 in FY2023 and not on the FY2025 list; down 16 since FY2023.
81	Daun Subur Mitra Lestari, PT Top agencies DOS (Department of State)	$57,554	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Johnson Controls Inc 2 awardees, including Johnson Controls Fire Protection LP Top agencies DOS (Department of State) Commerce (Department of Commerce) DOJ (Department of Justice)	$55,917	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	National Elevator Inspection Services, Inc. Top agencies GSA (General Services Administration)	$55,703	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Benson Capital Group LLC Top agencies VA (Department of Veterans Affairs)	$55,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Reliant Elevator Inspections & Consulting, Inc. Top agencies DOT (Department of Transportation)	$54,798	<0.1%	Rank history: #64 in FY2021, not on the FY2022 list, #20 in FY2023 and #54 in FY2025; down 65 since FY2023.
86	Insparisk, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOI (Department of the Interior)	$54,028	<0.1%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and #62 in FY2025; down 15 since FY2023.
87	Carter Machinery Company, Incorporated Top agencies DOS (Department of State)	$52,052	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Greenefficient Inc. Top agencies VA (Department of Veterans Affairs)	$50,955	<0.1%	Rank history: #76 in FY2021, not on the FY2022 list, #92 in FY2023 and not on the FY2025 list; up 4 since FY2023.
89	Letcher's Eci, LLC Top agencies VA (Department of Veterans Affairs)	$50,800	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and not on the FY2025 list; up 10 since FY2023.
90	Pacific Coast Contracting Group Top agencies VA (Department of Veterans Affairs)	$50,640	<0.1%	Rank history: #82 in FY2021, not on the FY2022 list, #91 in FY2023 and not on the FY2025 list; up 1 since FY2023.
91	Johnson Controls Fire Protection LP Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$49,738	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 12 since FY2023.
92	RMS GMBH Rasenpflege- UND Mäh-Service Top agencies Army (Department of the Army)	$49,504	<0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #90 in FY2023 and not on the FY2025 list; down 2 since FY2023.
93	Unks Construction, Inc. Top agencies USAF (Department of the Air Force)	$47,601	<0.1%	Rank history: #87 in FY2021, #84 in FY2022, not on the FY2023 list and not on the FY2025 list; up 14 since FY2023.
94	Georgia Commercial and Residential Elevator, LLC Top agencies USAF (Department of the Air Force)	$45,508	<0.1%	Rank history: not on the FY2021 list, #51 in FY2022, not on the FY2023 list and #24 in FY2025; returned.
95	Westnet, LLC Top agencies Army (Department of the Army)	$44,157	<0.1%	Rank history: not on the FY2021 list, #79 in FY2022, #94 in FY2023 and not on the FY2025 list; down 1 since FY2023.
96	Hdr, Inc. Through HDR Engineering Inc. Top agencies Army (Department of the Army)	$43,575	<0.1%	Rank history: #17 in FY2021, not on the FY2022 list, #54 in FY2023 and not on the FY2025 list; down 42 since FY2023.
97	Endevelopment L.L.C. Top agencies VA (Department of Veterans Affairs)	$43,208	<0.1%	Rank history: #92 in FY2021, not on the FY2022–FY2023 lists and #100 in FY2025; up 5 since FY2023.
98	Fluid Solutions LLC Top agencies DOS (Department of State)	$42,067	<0.1%	Rank history: not on the FY2021 list, #98 in FY2022, not on the FY2023 list and not on the FY2025 list; up 43 since FY2023.
99	Mass Tank Inspection Services LLC Top agencies Army (Department of the Army)	$41,680	<0.1%	Rank history: #95 in FY2021, not on the FY2022 list, #79 in FY2023 and not on the FY2025 list; down 20 since FY2023.
100	C&J General Contractors Group Inc. Top agencies VA (Department of Veterans Affairs)	$40,834	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 222 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54135

Code	Net obligations	Largest contractor
541350 Building Inspection Services	$155,871,153	Golder Europe Service Centre SRL

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 $196 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

Who were the top 10 NAICS 54135 contractors in FY2024?

1. Golder Europe Service Centre SRL ($66.4M), 2. Vanguard Inspection Services ($30.1M), 3. Jll-Rer Solutions, LLC ($27M), 4. Tribal One Technology, LLC ($6.84M), 5. Pond & Company ($5.68M), 6. Parsons Brinckerhoff Holdings Inc. ($4.3M), 7. Parsons Corporation ($688K), 8. Ati, Inc. ($653K), 9. Blue Construction Services LLC ($648K), 10. Project Solutions, Inc. ($597K).

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