Government Security Systems Services (except Locksmiths) Contracts
NAICS 561621 · Security Systems Services (except Locksmiths)
Government security systems services (except locksmiths) contracts totaled $2.3B across 7,709 awards from FY2024 to FY2026. Obligations were down 9.3% in FY2026 vs FY2025, and the Department of Defense was the largest buyer, accounting for $1.2B (53% of the total).
Key figures
In FY2026, contract obligations were $710,643,486 across 2,988 awards with activity that year, a change of -9.3% from $783,593,792 in FY2025. From FY2024 to FY2026, obligations totaled $2,299,611,408 across 7,709 awards.
- Obligated in FY2026
- $711M
- Awards in FY2026
- 2,988
- Change vs FY2025
- -9.3%
- Total, FY2024 to FY2026
- $2.3B
Note: FY2026 ended on Sep 30, 2026. The Department of Defense publishes contract data with a 90-day delay, so FY2026 totals may still rise as late reports arrive.
Security Systems Services (except Locksmiths) contract spending by year
Federal security systems services (except locksmiths) contracts per fiscal year (October to September), under NAICS 561621. The table below lists the same numbers.
| Fiscal year | Obligated | Awards | Change |
|---|---|---|---|
| FY2026 | $710,643,486 | 2,988 | -9.3% |
| FY2025 | $783,593,792 | 4,187 | -2.7% |
| FY2024 | $805,374,131 | 4,652 | n/a |
About government security systems services (except locksmiths) contracts
Federal spending on security systems services (except locksmiths) contracts fell 12% from FY2024 ($805M) to FY2026 ($711M). FY2026 closed recently, and Defense Department contracts are reported up to 90 days late, so its total may still rise.
Spending is spread widely: the top 3 contractors account for 34% of the total. No single company dominates, which leaves room for new and small contractors.
The Department of Defense spends the most on security systems services (except locksmiths) contracts (53%), followed by the Department of Homeland Security. The states with the most of this work are Virginia, California and District of Columbia.
NAICS 561621 (Security Systems Services (except Locksmiths)) is part of the Administrative and Support and Waste Management Services sector.
Top security systems services (except locksmiths) government contractors
Companies ranked by contract dollars under NAICS 561621 (Security Systems Services (except Locksmiths)).
| # | Contractor | Obligated | Share |
|---|---|---|---|
| 1 | M. C. Dean, Inc. | $317,702,505 | 13.8% |
| 2 | Serco Inc | $305,736,593 | 13.3% |
| 3 | Paragon Systems Inc | $151,233,385 | 6.6% |
| 4 | Johnson Controls Security Solutions LLC | $102,852,261 | 4.5% |
| 5 | CACI International Inc | $99,986,317 | 4.3% |
| 6 | General Dynamics Mission Systems, Inc. | $96,398,029 | 4.2% |
| 7 | Triple Canopy Inc | $65,456,951 | 2.8% |
| 8 | Johnson Controls Building Automation Systems, LLC | $63,506,847 | 2.8% |
| 9 | Advanced Technology Systems Company, Inc. (Of Virginia) | $45,689,068 | 2.0% |
| 10 | Xator LLC | $43,168,649 | 1.9% |
Agencies buying security systems services (except locksmiths) services
Federal agencies ranked by contract dollars under NAICS 561621.
| # | Agency | Obligated | Share |
|---|---|---|---|
| 1 | Department of Defense | $1,214,256,179 | 52.8% |
| 2 | Department of Homeland Security | $357,654,808 | 15.6% |
| 3 | Department of Justice | $166,620,050 | 7.2% |
| 4 | Department of Veterans Affairs | $146,122,239 | 6.4% |
| 5 | Department of Transportation | $127,006,068 | 5.5% |
| 6 | Department of Health and Human Services | $53,212,933 | 2.3% |
| 7 | Department of the Treasury | $36,886,535 | 1.6% |
| 8 | Securities and Exchange Commission | $35,729,887 | 1.6% |
| 9 | Department of the Interior | $25,566,027 | 1.1% |
| 10 | Department of Energy | $21,735,273 | 0.9% |
Where security systems services (except locksmiths) contract work is performed
States ranked by contract dollars, using the place of performance on each award.
| # | State | Obligated | Share |
|---|---|---|---|
| 1 | Virginia | $606,219,593 | 26.4% |
| 2 | California | $375,887,544 | 16.3% |
| 3 | District of Columbia | $240,920,697 | 10.5% |
| 4 | Maryland | $163,399,446 | 7.1% |
| 5 | Massachusetts | $116,536,430 | 5.1% |
| 6 | Texas | $78,161,793 | 3.4% |
| 7 | Michigan | $70,193,421 | 3.1% |
| 8 | Florida | $52,201,105 | 2.3% |
| 9 | South Carolina | $40,806,333 | 1.8% |
| 10 | Georgia | $36,479,733 | 1.6% |
Recent security systems services (except locksmiths) contract awards
The latest security systems services (except locksmiths) contracts, newest first. Each award ID links to its record on USAspending.gov.
| Start date | Recipient | Agency and description | Amount | Record |
|---|---|---|---|---|
| Sep 30, 2026 | Miscellaneous Foreign Awardees | Department of StateLEGAT - CCTV FOR JTTF-K BUILDING | $89,960 | 19KE5026P2128 |
| Sep 30, 2026 | Xtec, Incorporated | U.S. Agency for Global MediaSECURITY UPGRADES FOR MIAMI AND MARATHON LOCATIONS | $3,932,908 | 95170026K0063 |
| Sep 30, 2026 | Govglobal Consulting LLC | Department of Homeland SecuritySECURITY SYSTEM INSTALLATION FOR USCG LA/LB AND SAN DIEGO | $86,800 | 70Z08426PDL940054 |
| Sep 30, 2026 | Ce Solution Plus Corp. | Department of Homeland SecurityBASE SEATTLE ANNUAL FIRE ALARM CONFIDENCE TEST. | $28,266 | 70Z03326PSEAT0137 |
| Sep 30, 2026 | Johnson Controls Security Solutions LLC | Department of Homeland SecurityCHANGE THE LOCKS AT DC-TRACY, CALIF. (WAREHOUSE). MANUAL RE-CM N-TO-Y IFMIS, FOR AWARD CONTRACT-ORDER JOHNSON CONTROLS, INC. KCC | $17,536 | 70FA5026F00000152 |
| Sep 30, 2026 | Johnson Controls Security Solutions LLC | Department of Homeland SecurityATLANTA SECURITY UPGRADE EQUIPMENT | $1,397,461 | 70FA5026F00000150 |
| Sep 30, 2026 | Johnson Controls Security Solutions LLC | Department of Homeland SecurityFY 26 REGION 1 MAYNARD, INTRUSION DETECTION SYSTEM, PHYSICAL ACCESS CONTROL UPGRADES | $561,242 | 70FA5026F00000149 |
| Sep 30, 2026 | Johnson Controls Security Solutions LLC | Department of Homeland SecurityFY 26 REGION 6 UPGRADE OF PHYSICAL ACCESS CONTROL AND VIDEO MONITORING | $1,094,202 | 70FA5026F00000148 |
| Sep 30, 2026 | Johnson Controls Security Solutions LLC | Department of Homeland SecurityWINCHESTER FACILITY SECURITY UPGRADES INCLUDING VIDEO SURVEILLANCE AND OTHER ACCESS CONTROLS | $1,204,045 | 70FA5026F00000147 |
| Sep 30, 2026 | Johnson Controls Security Solutions LLC | Department of Homeland SecuritySECURITY UPGRADES FOR REGIONAL FACILITIES, INCLUDING LABOR AND MATERIALS | $1,211,271 | 70FA5026F00000146 |
| Sep 30, 2026 | Johnson Controls Security Solutions LLC | Department of Homeland SecuritySTB-1133 (REGION 1) ACTIVE BARRIERS WITH ACCESS CO | $2,250,000 | 70FA5026F00000109 |
| Sep 30, 2026 | Universal Spartan LLC | Department of Homeland SecurityTHE CONTRACTOR SHALL PROVIDE PREVENTIVE MAINTENANCE SERVICES FOR CBP SECURITY SYSTEMS TO ENSURE CONTINUED OPERATIONAL READINESS, RELIABILITY, AND COMPLIANCE WITH APPLICABLE MANUFACTURER RECOMMENDATION | $519,473 | 70B01C26P00000347 |
| Sep 30, 2026 | Gfy Logistics LLC | Department of Homeland SecurityREPLACEMENT OF CCTV SYSTEMS IN THREE LOCATIONS IN PR, RAMEY, CAMOC, AND SUNBAY | $932,325 | 70B01C26C00000177 |
| Sep 30, 2026 | Digitronics, Inc. | Department of Homeland SecurityINSTALLATION OF PACS AND VSS AT CBP SITE | $947,074 | 70B01C26C00000170 |
| Sep 30, 2026 | M.g.m. Computer System Inc. | Department of Veterans AffairsURGENT REQUIREMENT PATIENTTRAK | $46,231 | 36C24426P0565 |
| Sep 30, 2026 | M3T Corporation | Department of Veterans AffairsLENEL ONGUARD UPGRADE | $38,740 | 36C24426P0561 |
| Sep 30, 2026 | Miscellaneous Foreign Awardees | Department of StateRSO - RESIDENTIAL CENTRAL ALARM MONITORING SYSTEMS (CAMS) | $16,506 | 19Z11526F0065 |
| Sep 30, 2026 | Radionix LLC | Department of JusticeINTRUSION DETECTION SYSTEM IDS-MISSION CRITICAL FY26/27 PERIOD OF PERFORMANCE: 06/15/2026 - 06/14/2027 | $110,591 | 15M10626PA4700124 |
| Sep 30, 2026 | Granilux Holdings, Inc. | Department of JusticeRENEWAL: VIDEO SURVEILLANCE SYSTEM SUPPORT SERVICES FOR THE CIVIL DIVISION | $2,945 | 15JC1V26P00000708 |
| Sep 30, 2026 | Bhpe LLC | Department of Agriculture20 - CON - R5 RO FIRE PROTECTION SYSTEMS | $0 | 127EAY26C0004 |
| Sep 30, 2026 | Kidwell Inc | Department of AgricultureSECURITY CAMERA REFRESH AND MODERNIZATION | $288,345 | 12760426P0040 |
| Sep 30, 2026 | Security Operations Group International LLC | Department of AgricultureREPAIR SERVICE OF THE SECURITY FILM IN MINNEAPOLIS FACILITY | $2,500 | 12639526F0970 |
| Sep 30, 2026 | Polytron Corp | Department of AgriculturePHYSICAL SECURITY DOOR ACCESS READERS: LINC PASS READERS CURRENT DOOR ACCESS READERS DO NOT MEET CURRENT USDA STANDARDS | $42,000 | 12444326P0059 |
| Sep 30, 2026 | Arock Technologies, LLC | Department of AgricultureUSFS, CORVALLIS FORESTRY SCIENCES LAB (CFSL) ANNUAL INSPECTION OF FIRE ALARM SYSTEM AND FIRE SPRINKLER SYSTEM | $8,620 | 1240BE26P0104 |
| Sep 30, 2026 | Identification Badges of America, Inc. | Department of AgricultureTHE USDA-ARS, SOIL MANAGEMENT RESEARCH UNIT SEEKS TO UPGRADE THEIR CURRENT FIRE ALARM CONTROL PANEL AND REPLACE SMOKE AND HEAT DETECTORS TO ENSURE LONG-TERM, COMPLIANT LIFE SAFETY SYSTEM PERFORMANCE. | $46,653 | 1232SA26P0826 |
Open security systems services (except locksmiths) government bids
The newest open notices from SAM.gov. Bidding needs a free SAM.gov registration.
Veterans Affairs, Department of · Sources Sought · NAICS 561621 · Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside (FAR 19.14)
Posted Oct 30, 2026 · Responses due Nov 6, 2026
Treasury, Department of the · Solicitation · NAICS 561621 · VA · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 9, 2026
Veterans Affairs, Department of · Combined Synopsis/Solicitation · NAICS 561621 · Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside (FAR 19.14)
Posted Oct 30, 2026 · Responses due Nov 12, 2026
Veterans Affairs, Department of · Sources Sought · NAICS 561621 · Small Business Set Aside - Total
Posted Oct 30, 2026 · Responses due Nov 5, 2026
Dept of Defense · Combined Synopsis/Solicitation · NAICS 561621 · FL · No Set aside used
Posted Oct 30, 2026 · Responses due Nov 12, 2026
How to win government security systems services (except locksmiths) contracts
Federal security systems services (except locksmiths) contracts are posted on SAM.gov under NAICS 561621. Register your business free on SAM.gov with this code, watch for security systems services (except locksmiths) bids, and look for small business set-asides: many security systems services (except locksmiths) contracts for small business are reserved for small firms.
Explore government security systems services (except locksmiths) contracts by state, agency and contractor
- Department of Defense contracts
- Department of Homeland Security contracts
- Department of Justice contracts
- Department of Veterans Affairs contracts
- Department of Transportation contracts
- Government contracts in Virginia
- Government contracts in California
- Government contracts in District of Columbia
- Government contracts in Maryland
- Government contracts in Massachusetts
- M. C. Dean government contracts
- Serco government contracts
- Paragon Systems government contracts
Frequently asked questions
- What NAICS code is used for government security systems services (except locksmiths) contracts?
- Federal security systems services (except locksmiths) contracts use NAICS 561621 (Security Systems Services (except Locksmiths)). List this code in your free SAM.gov registration to be found for these contracts.
- Who are the largest security systems services (except locksmiths) government contractors?
- By contract dollars under NAICS 561621 from FY2024 to FY2026, the largest were M. C. Dean, Inc. ($318M), Serco Inc ($306M) and Paragon Systems Inc ($151M).
- Which agencies buy the most security systems services (except locksmiths)?
- From FY2024 to FY2026, the biggest buyers were the Department of Defense ($1.2B), the Department of Homeland Security ($358M) and the Department of Justice ($167M).
- Where are government security systems services (except locksmiths) contracts performed?
- By contract dollars, the most federal security systems services (except locksmiths) work is performed in Virginia ($606M), California ($376M) and District of Columbia ($241M).
- Is federal spending on security systems services (except locksmiths) contracts growing?
- Federal security systems services (except locksmiths) contract obligations fell 12% from FY2024 ($805M) to FY2026 ($711M). FY2026 closed recently, and Defense Department contracts are reported up to 90 days late, so its total may still rise.
- Do I qualify as a small business for security systems services (except locksmiths) contracts?
- It depends on the SBA size standard for NAICS 561621, which is set either by average annual revenue or by number of employees. Check the current table of size standards on sba.gov before you bid on small business set-asides.
- What do I need to bid on government security systems services (except locksmiths) contracts?
- An active SAM.gov registration (free) with NAICS 561621 listed, the licenses and insurance your state requires for security systems services (except locksmiths) work, and examples of similar past work. Some solicitations also ask for specific certifications or security clearances.