Top 100 Contractors in PSC Z2: Maintenance, Alteration, Repair Nonbuildings, Jul 2025–Jun 2026

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 22% of PSC Z2 contract dollars from July 2025 through June 2026

Contract obligations
$16,960,745,435 Net of deobligations, by contracts coded PSC Z2 or a code under it
Contractors
3,832 Parent companies with an obligation
Largest contractor
Barnard Construction Company, Incorporated $1.35 billion, 7.6% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download

Full ranking

Rank Contractor Net obligations Share Trend
1
Barnard Construction Company, Incorporated
Top agencies
$1,349,847,155
2
Kiewit-Alberici Siop Macc AJV
Top agencies
$515,627,192
3
Fisher Sand & Gravel Co
Top agencies
$345,040,000
4
Nan Inc.
Top agencies
$322,626,268
5
BL Harbert International LLC
Top agencies
$307,148,422
6
Peter Kiewit Sons', Inc. 2 awardees, including Kiewit Infrastructure South Co and Weeks Marine, Inc.
Top agencies
$251,255,091
7
NW Construction, Inc.
Top agencies
$215,670,745
8
C.j. Mahan Construction Company, LLC
Top agencies
$209,875,254
9
Hawaii Harbors Constructors JV
Top agencies
$197,969,868
10
Weston Solutions Holdings Inc Through Weston Solutions Inc.
Top agencies
$182,319,098
11
Clark Construction Group - California, LP
Top agencies
$135,750,000
12
Sea PAC Engineering Inc
Top agencies
$133,457,350
13
Balfour Beatty Construction, LLC
Top agencies
$116,166,105
14
Hensel Phelps Construction Co 3 awardees
Top agencies
$113,300,164
15
Sauer Construction LLC
Top agencies
$111,737,518
16
American Engineering Corporation
Top agencies
$104,625,954
17
RQ Construction, LLC
Top agencies
$101,045,749
18
The Whiting-Turner Contracting Company
Top agencies
$98,959,249
19
Benaka, Inc.
Top agencies
$96,850,007
20
Honeywell International Inc. 2 awardees, including Honeywell Building Solutions SES Corp
Top agencies
$89,459,644
21
J & J Maintenance Inc.
Top agencies
$88,004,814
22
Hcpa-Garco JV1
Top agencies
$85,650,000
23
Butt Construction Company, Incorporated
Top agencies
$82,913,903
24
Kiewit Infrastructure South Co 2 awardees, including Weeks Marine, Inc.
Top agencies
$82,252,086
25
Murnane Building Contractors, Inc.
Top agencies
$80,198,483
26
Tutor Perini Corporation Through Perini Management Services, Inc.
Top agencies
$72,788,283
27
Multiquip Inc. Through Olsson Industrial Electric, Inc.
Top agencies
$72,525,082
28
Atkins Nuclear Secured Holdings Corporation Through Isotek Systems, LLC
Top agencies
$68,378,923
29
General Electric Company Through GE Renewables US LLC
Top agencies
$67,521,491
30
Emr, Inc.
Top agencies
$65,601,152
31
Bristol Bay Native Corporation 10 awardees, including CCI Group, LLC, SES Constructors LLC and CCI General Contractors, LLC
Top agencies
$62,178,957
32
Terra Site Constructors LLC 3 awardees, including Tsc-Edifice Jv1, LLC
Top agencies
$61,449,271
33
Structsure Projects Inc.
Top agencies
$61,149,471
34
R.a. Burch Construction Co., Inc.
Top agencies
$60,675,261
35
Fox-Esa JV LLC
Top agencies
$56,758,349
36
Great Lakes Dredge & Dock Corporation
Top agencies
$55,371,940
37
Gilbane Japan GK
Top agencies
$53,097,052
38
Agate Construction Company Inc.
Top agencies
$53,000,000
39
Sedona-Nasco Jv2, LLC
Top agencies
$52,472,906
40
Native American Services Corp.
Top agencies
$51,113,089
41
Nova Group, Inc.
Top agencies
$51,112,373
42
Facility Services Management, Inc.
Top agencies
$50,495,183
43
Herman Construction Group, Inc.
Top agencies
$49,306,589
44
The Trevino Group, Inc.
Top agencies
$48,961,067
45
Bridger Richard JV LLC
Top agencies
$48,919,236
46
Absher Construction Co 2 awardees, including Jabez-Absher Small Business Joint Venture
Top agencies
$48,757,216
47
Semper TEK Inc
Top agencies
$47,025,118
48
Olgoonik Enterprises, LLC
Top agencies
$47,017,456
49
Kekolu Contracting, LLC
Top agencies
$46,715,435
50
Bering Straits Native Corporation 2 awardees, including Stampede Ventures, Inc.
Top agencies
$46,228,209
51
Chickasaw Defense Group, LLC
Top agencies
$44,581,562
52
SES Electrical LLC
Top agencies
$43,906,955
53
RHI LLC
Top agencies
$43,821,241
54
Hurley JV, LLP
Top agencies
$43,795,485
55
Nippo Corporation
Top agencies
$43,785,473
56
International Towers LLC
Top agencies
$43,273,037
57
V2X, Inc. 2 awardees, including Vectrus Federal Services GMBH and V2X Systems LLC
Top agencies
$43,084,965
58
Dawson Enterprises, Inc.
Top agencies
$42,581,730
59
Doyon Management Services, LLC
Top agencies
$42,133,988
60
Red Point Construction, LLC
Top agencies
$42,103,616
61
Dawson Technical, Inc.
Top agencies
$41,600,000
62
D Square Construction LLC
Top agencies
$40,541,118
63
Gana-A' Yoo, Limited 4 awardees, including Yukon Management, LLC, Gana-A'yoo Construction Services JV, LLC and Khotol Services Corporation
Top agencies
$40,489,246
64
Military & Federal Construction Co., Inc.
Top agencies
$39,440,721
65
Knight Const. & Supply Inc
Top agencies
$39,187,746
66
Siemens Corporation 2 awardees, including Siemens Government Technologies Inc. and Siemens Industry Inc.
Top agencies
$38,646,570
67
Nihon Meccs Co.,Ltd.
Top agencies
$38,591,006
68
Etolin Strait Associates LLC
Top agencies
$38,282,654
69
Pacific Rim Constructors Inc.
Top agencies
$38,279,434
70
WSP USA Environment & Infrastructure Inc.
Top agencies
$38,068,009
71
Speegle Construction, Inc.
Top agencies
$37,869,378
72
Pacific Design Builders, LLC
Top agencies
$37,662,525
73
Harper Construction Company Inc.
Top agencies
$37,590,122
74
CMS K.K.
Top agencies
$37,000,744
75
Outside Box LLC
Top agencies
$35,994,114
76
Ameresco Inc. 2 awardees, including Ameresco Select, Inc.
Top agencies
$35,232,257
77
Medvolt - Roundhouse JV
Top agencies
$34,323,745
78
CCI Prime Contractors, LLC
Top agencies
$34,267,554
79
Utility Systems Solutions, Inc.
Top agencies
$34,086,070
80
Anna Lisa Luna Construction, Inc.
Top agencies
$33,826,773
81
Fargo Pacific Inc.
Top agencies
$33,568,381
82
JBW Group LLC
Top agencies
$33,374,110
83
Healtheon, Inc.
Top agencies
$33,012,111
84
Insight Pacific, LLC
Top agencies
$32,759,736
85
New Dominion Construction LLC
Top agencies
$31,615,034
86
Gideon Contracting, Limited Liability Company
Top agencies
$31,555,480
87
Wichita Falls TRI-Tech LLC
Top agencies
$31,528,291
88
TST Tactical Defense Solutions Inc.
Top agencies
$31,408,520
89
Manson Construction Co
Top agencies
$31,192,382
90
Environet Inc.
Top agencies
$30,921,414
91
Arctic Slope Regional Corporation 4 awardees, including Asrc Earthworks, LLC, Asrc Consulting & Environmental Services, LLC and Asrc Prime Constructors, LLC
Top agencies
$30,881,986
92
Cerris Builders, Inc.
Top agencies
$30,625,000
93
Port Madison Construction Corporation
Top agencies
$30,517,642
94
Armitage SAI JV
Top agencies
$30,463,021
95
I.e.-Pacific, Inc.
Top agencies
$30,404,879
96
J G Contracting
Top agencies
$30,354,153
97
Icon Si (Aust) PTY Ltd
Top agencies
$30,248,960
98
HDD JV
Top agencies
$29,663,000
99
Centerra Integrated Facilities Services, LLC
Top agencies
$29,541,972
100
Blue Rock Structures, Inc.
Top agencies
$29,450,031
Show 75 more

100 of 3,832 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC Z2

Code Net obligations Largest contractor
Z2JZ Repair or Alteration of Miscellaneous Buildings $3,201,404,915 Nan Inc.
Z2KA Repair or Alteration of Dams $2,058,491,391 Barnard Construction Company, Incorporated
Z2AA Repair or Alteration of Office Buildings $1,655,210,257 Honeywell International Inc.
Z2DA Repair or Alteration of Hospitals and Infirmaries $1,369,414,029 J & J Maintenance Inc.
Z2AZ Repair or Alteration of Other Administrative Facilities and Service Buildings $1,338,635,333 Fisher Sand & Gravel Co
Z2LB Repair or Alteration of Highways/Roads/Streets/Bridges/Railways $832,468,983 Peter Kiewit Sons', Inc.
Z2PZ Repair or Alteration of Other Non-Building Facilities $787,664,639 Hawaii Harbors Constructors JV
Z2FC Repair or Alteration of Troop Housing Facilities $760,605,993 Clark Construction Group - California, LP
Z2ED Repair or Alteration of Ship Construction and Repair Facilities $659,386,035 Kiewit-Alberici Siop Macc AJV
Z2QA Repair or Alteration of Restoration of Real Property (Public or Private) $540,725,215 Terra Site Constructors LLC
Z2NZ Repair or Alteration of Other Utilities $448,976,417 Sauer Construction LLC
Z2NA Repair or Alteration of Fuel Supply Facilities $401,604,892 Weston Solutions Holdings Inc
Z2BD Repair or Alteration of Airport Runways and Taxiways $279,945,742 Hensel Phelps Construction Co
Z2NE Repair or Alteration of Water Supply Facilities $179,570,985 Nan Inc.
Z2BZ Repair or Alteration of Other Airfield Structures $176,183,166 RQ Construction, LLC
Z2GZ Repair or Alteration of Other Warehouse Buildings $160,691,273 International Towers LLC
Z2EB Repair or Alteration of Maintenance Buildings $146,052,443 Cerris Builders, Inc.
Z2DZ Repair or Alteration of Other Hospital Buildings $145,759,908 Utility Systems Solutions, Inc.
Z2FF Repair or Alteration of Penal Facilities $134,974,360 Seneca Federal Solutions, LLC
Z2EZ Repair or Alteration of Other Industrial Buildings $131,232,148 Healtheon, Inc.
Z2KZ Repair or Alteration of Other Conservation and Development Facilities $119,691,280 Siemens Corporation
Z2EA Repair or Alteration of Ammunition Facilities $113,821,329 Chickasaw Defense Group, LLC
Z2FB Repair or Alteration of Recreational Buildings $107,852,371 Insight Pacific, LLC
Z2FA Repair or Alteration of Family Housing Facilities $105,931,084 Medvolt - Roundhouse JV
Z2PD Repair or Alteration of Waste Treatment and Storage Facilities $72,325,291 Tutor Perini Corporation
Z2LZ Repair or Alteration of Parking Facilities $59,619,774 E Corp
Z2CA Repair or Alteration of Schools $56,894,318 Pacific Design Builders, LLC
Z2PA Repair or Alteration of Recreation Facilities (Non-Building) $55,532,964 EC Praus LLC
Z2FZ Repair or Alteration of Other Residential Buildings $54,996,753 Yeajin E&C Co.,Ltd.
Z2ND Repair or Alteration of Sewage and Waste Facilities $54,063,566 JBW Group LLC
Z2NB Repair or Alteration of Heating and Cooling Plants $52,782,031 Copper Construction Company, Inc.
Z2CZ Repair or Alteration of Other Educational Buildings $44,461,538 Sankyo Denki Ohna Denken JV
Z2BG Repair or Alteration of Electronic and Communications Facilities $41,609,750 Framaco-Bozdemir Joint Venture LLC
Z2EC Repair or Alteration of Production Buildings $37,873,367 Midlands Mechanical, Inc.
Z2FD Repair or Alteration of Dining Facilities $28,139,089 Olgoonik Logistics, LLC
Z2DB Repair or Alteration of Laboratories and Clinics $18,210,686 Red Bison Services, LLC
Z2JA Repair or Alteration of Museums and Exhibition Buildings $18,074,558 The Christman Company
Z2BC Repair or Alteration of Radar and Navigational Facilities $16,746,775 Sergents Mechanical Systems Inc.
Z2BA Repair or Alteration of Air Traffic Control Towers $13,689,539 Ameritech Contracting LLC
Show all 39

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 $17.8 billion 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.
  • Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
  • Rank changes compare with Jul 2024–Jun 2025. "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.
  • 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 Z2 contractors in Jul 2025–Jun 2026?

1. Barnard Construction Company, Incorporated ($1.35B), 2. Kiewit-Alberici Siop Macc AJV ($516M), 3. Fisher Sand & Gravel Co ($345M), 4. Nan Inc. ($323M), 5. BL Harbert International LLC ($307M), 6. Peter Kiewit Sons', Inc. ($251M), 7. NW Construction, Inc. ($216M), 8. C.j. Mahan Construction Company, LLC ($210M), 9. Hawaii Harbors Constructors JV ($198M), 10. Weston Solutions Holdings Inc ($182M).

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