Top 25 Contractors in PSC C1DB: Architect and Engineering – Construction: Laboratories and Clinics, FY2025

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

The top 10 won 87% of FY2025 PSC C1DB contract dollars

Ranking facts

Contract obligations
$37,233,896 Net of deobligations, by contracts coded PSC C1DB
Contractors
28 Parent companies with an obligation
Largest contractor
Ameresco Inc. $9.21 million, 23.4% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 25 rows as CSV

Full ranking

Rank Contractor Net obligations Share Trend
1 $9,208,821
Rank history: #11 in FY2021, #10 in FY2022, #12 in FY2023 and #14 in FY2024; up 13 since FY2024.
2 $8,511,641
Rank history: not on the FY2021–FY2022 lists, #7 in FY2023 and #32 in FY2024; up 30 since FY2024.
3 $6,241,238
Rank history: #21 in FY2021, #4 in FY2022, #2 in FY2023 and #1 in FY2024; down 2 since FY2024.
4 $3,261,815
Rank history: #20 in FY2021, #19 in FY2022, #19 in FY2023 and #20 in FY2024; up 16 since FY2024.
5 $1,845,090
Rank history: #31 in FY2021, #11 in FY2022, #10 in FY2023 and #3 in FY2024; down 2 since FY2024.
6
Flagship Contracting Inc
$1,479,915
Rank history: not on the FY2021–FY2023 lists and #12 in FY2024; up 6 since FY2024.
7 $1,150,843
Rank history: #34 in FY2021, #22 in FY2022, #16 in FY2023 and #11 in FY2024; up 4 since FY2024.
8 $1,033,823
Rank history: not on the FY2021 list, #25 in FY2022, #4 in FY2023 and #30 in FY2024; up 22 since FY2024.
9 $845,945
Rank history: not on the FY2021–FY2024 lists; new.
10 $759,553
Rank history: not on the FY2021–FY2024 lists; new.
11 $753,312
Rank history: not on the FY2021–FY2024 lists; new.
12
Richard Mcelhiney Architect PLLC
$717,794
Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 3 since FY2024.
13 $673,678
Rank history: not on the FY2021–FY2024 lists; new.
14 $445,859
Rank history: not on the FY2021–FY2024 lists; new.
15 $434,132
Rank history: not on the FY2021–FY2024 lists; new.
16 $360,517
Rank history: not on the FY2021–FY2024 lists; new.
17
Summer Consultants Inc
$228,625
Rank history: not on the FY2021 list, #7 in FY2022, #8 in FY2023 and #16 in FY2024; down 1 since FY2024.
18 $201,973
Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and #13 in FY2024; down 5 since FY2024.
19 $191,599
Rank history: #43 in FY2021, #14 in FY2022, #13 in FY2023 and #17 in FY2024; down 2 since FY2024.
20 $119,942
Rank history: not on the FY2021–FY2024 lists; new.
21 $70,982
Rank history: not on the FY2021–FY2024 lists; new.
22 $55,053
Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; up 5 since FY2024.
23 $35,128
Rank history: #1 in FY2021, not on the FY2022 list, #37 in FY2023 and #10 in FY2024; down 13 since FY2024.
24
American Structurepoint Inc.
$19,796
Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2024 list; returned.
25 $9,174
Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; down 18 since FY2024.

25 of 28 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 $39.4 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 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 C1DB contractors in FY2025?

1. Ameresco Inc. ($9.21M), 2. Pond-Baker JV ($8.51M), 3. The Johnson-Mcadams Firm, P.a. ($6.24M), 4. Siemens Aktiengesellschaft ($3.26M), 5. Bailey Edward Design, Inc. ($1.85M), 6. Flagship Contracting Inc ($1.48M), 7. I Design and Planning, LLC ($1.15M), 8. Solpac Construction Inc. ($1.03M), 9. Wbrc Inc. ($846K), 10. Alares LLC ($760K).

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