Bids by NAICSFederal contract awards and open bids by industry code
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← 56 Administrative and Support and Waste Management and Remediation Services

561 Administrative and Support Services

  1. 561110Office Administrative Services
  2. 561210Facilities Support Services
  3. 561311Employment Placement Agencies
  4. 561320Temporary Help Services
  5. 561330Professional Employer Organizations
  6. 561410Document Preparation Services
  7. 561421Telephone Answering Services
  8. 561422Telemarketing Bureaus and Other Contact Centers
  9. 561431Private Mail Centers
  10. 561439Other Business Service Centers (including Copy Shops)
  11. 561440Collection Agencies
  12. 561450Credit Bureaus
  13. 561492Court Reporting and Stenotype Services
  14. 561499All Other Business Support Services
  15. 561510Travel Agencies
  16. 561599All Other Travel Arrangement and Reservation Services
  17. 561611Investigation and Personal Background Check Services
  18. 561612Security Guards and Patrol Services
  19. 561613Armored Car Services
  20. 561621Security Systems Services (except Locksmiths)
  21. 561622Locksmiths
  22. 561710Exterminating and Pest Control Services
  23. 561720Janitorial Services
  24. 561730Landscaping Services
  25. 561740Carpet and Upholstery Cleaning Services
  26. 561790Other Services to Buildings and Dwellings
  27. 561910Packaging and Labeling Services
  28. 561920Convention and Trade Show Organizers
  29. 561990All Other Support Services

All sectors

  1. 11Agriculture, Forestry, Fishing and Hunting
  2. 21Mining, Quarrying, and Oil and Gas Extraction
  3. 22Utilities
  4. 23Construction
  5. 31-33Manufacturing
  6. 42Wholesale Trade
  7. 44-45Retail Trade
  8. 48-49Transportation and Warehousing
  9. 51Information
  10. 52Finance and Insurance
  11. 53Real Estate and Rental and Leasing
  12. 54Professional, Scientific, and Technical Services
  13. 56Administrative and Support and Waste Management and Remediation Services
  14. 61Educational Services
  15. 62Health Care and Social Assistance
  16. 71Arts, Entertainment, and Recreation
  17. 72Accommodation and Food Services
  18. 81Other Services (except Public Administration)
  19. 92Public Administration

561621 Security Systems Services (except Locksmiths): federal contract awards

Federal agencies obligated $815.5 million on contracts coded 561621 from July 1, 2025 to June 30, 2026. They made 1,605 new awards with a median of $38,153. Small businesses received 31% of the money.

Contract obligations
$815.5 millionJul 2025 to Jun 2026
New awards
1,605signed in the window
Median new award
$38,153obligated to date
Small-business share
31%$253.1 million

Which federal offices buy 561621 work

The five awarding offices with the largest obligations under 561621, Jul 2025 to Jun 2026
Awarding officeDepartmentObligationsShare of 561621
Department of the NavyDOD$196.7 million24%
Department of the Air ForceDOD$130.7 million16%
Office of Procurement OperationsDHS$88.5 million11%
Department of the ArmyDOD$63.2 million8%
Federal Aviation AdministrationDOT$56.7 million7%

Which companies received 561621 awards

The five recipients with the largest obligations under 561621, Jul 2025 to Jun 2026, as named in USAspending
RecipientObligationsShare of 561621
M. C. DEAN, INC.$134.9 million17%
SERCO INC$123.6 million15%
PARAGON SYSTEMS INC$60.4 million7%
CACI INTERNATIONAL INC$34.2 million4%
GENERAL DYNAMICS MISSION SYSTEMS, INC.$31.3 million4%

How the 561621 money was set aside

Share of obligations by the set-aside type recorded on each contract action. Orders under larger contract vehicles often record none.

Small business set-aside7.1%$57.8 million
Service-disabled veteran-owned3.0%$24.5 million
8(a)5.1%$41.8 million
HUBZone<0.1%$127,963
Women-owned (WOSB, EDWOSB)0.2%$1.6 million
Veteran-owned (VA)<0.1%$91,384
Indian enterprise0.2%$1.6 million
No set-aside used18%$146.9 million
No set-aside type recorded66%$541.1 million

Open for bids on SAM.gov on September 29, 2026

The SAM.gov extract of September 29, 2026 listed 39 open notices coded 561621 whose response deadline had not passed: 15 presolicitations, 9 combined synopsis/solicitations, 8 solicitations, 7 sources sought notices.

  • Open notices39
  • Solicitations and combined synopses17
  • Sources sought and presolicitations22
  • Posted in the 30 days before the extract26
  • Naming a place of performance64%
  • Median days from posting to response deadline7

Set-asides on these notices: Total small business set-aside: 13; Set-aside not stated: 10; No set-aside: 6; SDVOSB set-aside: 4.

Posting agencies with the most open notices: DEPT OF THE NAVY (10), DEPT OF THE AIR FORCE (8), VETERANS AFFAIRS, DEPARTMENT OF (8), DEPT OF THE ARMY (3), (2).

Most common places of performance: California (4), Massachusetts (4), Colorado (3), Nevada (2), Oklahoma (2).

This is a snapshot. The live list is on SAM.gov Contract Opportunities, where you can filter by NAICS code.

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The daily digest emails you the notices posted on SAM.gov under 561621 and up to nine more codes, in the states you choose, each with its response deadline, set-aside and SAM.gov link, and the award figures on this page for context. $149 a year.

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Award figures: USAspending.gov, contract award types A to D (BPA calls, purchase orders, delivery orders, definitive contracts), action dates July 1, 2025 to June 30, 2026, retrieved September 29, 2026. Open notices: SAM.gov Contract Opportunities public extract of September 29, 2026. How each figure is defined.