ADDON SERVICES LLC — United States · Federal contract register · Supplier record: 282 contracts, all years ($305,915,116 · Aug 2013 – May 2026); $50.7M since January 2024 (16 contracts · 2 agencies); 48th rank in the line (of 940 suppliers · 0.36%); 11 agencies never served ($1.6B on the line without ADDON SERVICES LLC).
Assay record ASY-US-0YCUPHZ1LE · Cite as: Assay Systems, “ADDON SERVICES LLC in the USAspending register”, https://assay-systems.com/register/us/addon-services-llc/
282
contracts, all years
$305,915,116 · Aug 2013 – May 2026
$50.7M
since January 2024
16 contracts · 2 agencies
48th
rank in the line
of 940 suppliers · 0.36%
11
agencies never served
$1.6B on the line without ADDON SERVICES LLC
Own record by year
2019 onward
$7.3M
$45.9M
$22.3M
$37.9M
$44.7M
$30.3M
$20.1M
$203K
20192020202120222023202420252026
Who buys from ADDON SERVICES LLC
since January 2024
2agencies
$50.7Mpaid
93.6%top buyer
Department of Defense93.6%
$47,429,787
Department of Transportation6.4%
$3,226,561
Before 2024 only: Department of Homeland Security, Department of Labor, Department of Veterans Affairs, Department of the Interior, General Services Administration.
The line
since January 2024
$12.2Bline value
2,981contracts
17agencies
940suppliers
40.3%held by top ten
Construction of miscellaneous buildings (Y1JZ)
$4.8B
$3.9B
$3.5B
202420252026Jan–Sep
48thof 940 suppliers
$44,030,495ADDON SERVICES LLC in the line
0.36%share of the line
0.5%of $8,109,537,760 spent by Department of Defense
Agencies that buy the line and never bought from ADDON SERVICES LLC
11agencies
1,036contracts
$1,575,202,973since January 2024
Department of Health and Human Services548 contracts
$1,209,102,492
National Aeronautics and Space Administration176 contracts
$207,265,493
Department of Agriculture105 contracts
$115,898,985
Department of Justice133 contracts
$26,283,951
Department of Energy3 contracts
$9,865,723
Department of State63 contracts
$4,635,291
Agency for International Development1 contract
$1,455,062
Department of Commerce2 contracts
$448,102
Department of the Treasury2 contracts
$106,150
District of Columbia Courts2 contracts
$72,724
Executive Office of the President1 contract
$69,000
How the line is bought
by value, since 2024
8%no competition
6%one applicant
0of these to ADDON SERVICES LLC
Competed, several suppliers applied1,745 contracts
Source: USAspending.gov, U.S. Department of the Treasury, Bureau of the Fiscal Service, usaspending.gov, accessed 30 September 2026.The data is available to copy, adapt, redistribute, or otherwise use for non-commercial or for commercial purposes (USAspending.gov, Licensing); no Dun & Bradstreet data is shown.