Top 34 Contractors in PSC H356: Inspection and Laboratory Services (except medical/dental): Construction and Building Materials, FY2025

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

The top 10 won 65% of FY2025 PSC H356 contract dollars

Ranking facts

Contract obligations
$21,917,121 Net of deobligations, by contracts coded PSC H356
Contractors
35 Parent companies with an obligation
Largest contractor
Project Solutions, Inc. $8.43 million, 29.9% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 34 rows as CSV

Full ranking

Rank Contractor Net obligations Share Trend
1 $8,433,246
Rank history: #3 in FY2021, #15 in FY2022, #1 in FY2023 and #2 in FY2024; up 1 since FY2024.
2 $2,104,488
Rank history: not on the FY2021–FY2022 lists, #2 in FY2023 and #1 in FY2024; down 1 since FY2024.
3 $1,384,728
Rank history: not on the FY2021 list, #22 in FY2022, #11 in FY2023 and #7 in FY2024; up 4 since FY2024.
4 $1,176,999
Rank history: not on the FY2021–FY2022 lists, #6 in FY2023 and #5 in FY2024; up 1 since FY2024.
5 $1,176,136
Rank history: #2 in FY2021, #14 in FY2022, #18 in FY2023 and #25 in FY2024; up 20 since FY2024.
6 $996,311
Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #3 in FY2024; down 3 since FY2024.
7 $904,616
Rank history: #6 in FY2021, #5 in FY2022, #13 in FY2023 and not on the FY2024 list; returned.
8 $848,706
Rank history: not on the FY2021–FY2024 lists; new.
9 $679,770
Rank history: not on the FY2021–FY2024 lists; new.
10 $580,894
Rank history: #15 in FY2021, #2 in FY2022, #4 in FY2023 and #4 in FY2024; down 6 since FY2024.
11 $550,707
Rank history: #13 in FY2021, #9 in FY2022, #22 in FY2023 and #6 in FY2024; down 5 since FY2024.
12
Bizsolutions 360 Inc.
$524,027
Rank history: #20 in FY2021, #20 in FY2022, #21 in FY2023 and #24 in FY2024; up 12 since FY2024.
13 $497,805
Rank history: not on the FY2021–FY2022 lists, #10 in FY2023 and not on the FY2024 list; returned.
14 $432,322
Rank history: #4 in FY2021, #8 in FY2022, #9 in FY2023 and not on the FY2024 list; returned.
15 $391,830
Rank history: not on the FY2021–FY2024 lists; new.
16
Crawford Consulting Services Inc.
$331,841
Rank history: #10 in FY2021, #6 in FY2022, #20 in FY2023 and #9 in FY2024; down 7 since FY2024.
17
Construction Support Solutions LLC
$308,776
Rank history: not on the FY2021–FY2022 lists, #12 in FY2023 and #23 in FY2024; up 6 since FY2024.
18 $295,162
Rank history: #32 in FY2021, not on the FY2022–FY2023 lists and #43 in FY2024; up 25 since FY2024.
19 $221,687
Rank history: not on the FY2021 list, #12 in FY2022, #31 in FY2023 and #15 in FY2024; down 4 since FY2024.
20 $200,005
Rank history: #5 in FY2021, #1 in FY2022, not on the FY2023 list and #10 in FY2024; down 10 since FY2024.
21 $149,600
Rank history: not on the FY2021–FY2022 lists, #8 in FY2023 and not on the FY2024 list; returned.
22
Aldevra LLC
$148,145
Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 18 since FY2024.
23 $127,538
Rank history: not on the FY2021–FY2024 lists; new.
24 $106,450
Rank history: #14 in FY2021, #3 in FY2022, #17 in FY2023 and #8 in FY2024; down 16 since FY2024.
25 $93,978
Rank history: #24 in FY2021 and not on the FY2022–FY2024 lists; returned.
26 $63,055
Rank history: #23 in FY2021, #27 in FY2022, #29 in FY2023 and #27 in FY2024; up 1 since FY2024.
27 $45,600
Rank history: not on the FY2021–FY2024 lists; new.
28
Shannon & Wilson Inc.
$40,842
Rank history: not on the FY2021–FY2024 lists; new.
29
Ameritech Contracting LLC
$38,266
Rank history: not on the FY2021–FY2024 lists; new.
30 $32,100
Rank history: not on the FY2021 list, #29 in FY2022, #35 in FY2023 and #28 in FY2024; down 2 since FY2024.
31 $11,750
Rank history: not on the FY2021–FY2024 lists; new.
32 $8,650
Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and #46 in FY2024; up 14 since FY2024.
33
Potable Divers Inc
$4,000
Rank history: not on the FY2021–FY2024 lists; new.
34 $3,344
Rank history: not on the FY2021–FY2024 lists; new.
Show 9 more

34 of 35 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 $28.2 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 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 PSC H356 contractors in FY2025?

1. Project Solutions, Inc. ($8.43M), 2. Accura Engineering and Consulting Services, Inc. ($2.1M), 3. ACE Consulting Company, Inc. ($1.38M), 4. Ecompex, Inc. ($1.18M), 5. Alpha Construction and Engineering Corporation ($1.18M), 6. Procon Consulting LLC ($996K), 7. PMA Associates, Inc. ($905K), 8. Jay Shapiro & Associates, Inc. ($849K), 9. ASR International Corp. ($680K), 10. Unified Business Technologies, Inc. ($581K).

On GovTribe

Research every contractor on this list

  • Every contract, task order and IDV they hold
  • Their subsidiaries, teammates and competitors
  • Open opportunities they're positioned for
  • Alerts when they win new work