NAICS Code 56121: Facilities Support Services
NAICS industry
Definition
This industry comprises establishments primarily engaged in providing operating staff to perform a combination of support services within a client's facilities. Establishments in this industry typically provide a combination of services, such as janitorial, maintenance, trash disposal, guard and security, mail routing, reception, laundry, and related services to support operations within facilities. These establishments provide operating staff to carry out these support activities, but are not involved with or responsible for the core business or activities of the client.
Establishments providing facilities (except computer and/or data processing) operation support services and establishments providing private jail services or operating correctional facilities (i.e., jails) on a contract or fee basis are included in this industry.
Government contracts for this service: PSC M1JZ Operation of Miscellaneous Buildings
Code facts
- Part of
-
-
56
-
561
- 5612
-
561
-
56
- Codes under it
- 1
- Contract awards
- 9,724 In the last 12 months
- Contract obligations
- $38,472,895,272 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 561210
- Base facilities operation support services
- Correctional facility operation on a contract or fee basis
- Facilities (except computer operation) support services
- Government base facilities operation support services
- Jail operation on a contract or fee basis
- Jails, privately operated
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $2,981,938,290 |
| FY2026 | $37,537,760,112 |
| FY2025 | $38,472,895,272 |
| FY2024 | $39,718,576,692 |
| FY2023 | $39,142,922,666 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Triad National Security, LLC | $6,396,154,908 | |
| 2 | National Technology & Engineering Solutions Of Sandia, LLC | $5,735,417,678 | |
| 3 | Consolidated Nuclear Security, LLC | $3,640,202,566 | |
| 4 | Ut-Battelle LLC | $3,293,684,986 | |
| 5 | Savannah River Nuclear Solutions LLC | $2,988,222,472 | |
| 6 | Honeywell Federal Manufacturing & Technologies, LLC | $2,551,646,743 | |
| 7 | Pantexas Deterrence, LLC | $1,654,534,189 | |
| 8 | Mission Support & Test Services LLC | $1,143,326,152 | |
| 9 | V2X Systems LLC | $1,100,099,158 | |
| 10 | KBR Services, LLC | $804,479,195 |
See the full FY2025 ranking of NAICS 56121 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Energy | $25,436,146,578 | |
| 2 | Department of the Army | $4,419,370,663 | |
| 3 | Department of the Navy | $2,977,496,766 | |
| 4 | Air Force | $2,575,985,016 | |
| 5 | General Services Administration | $781,337,492 | |
| 6 | Department of Homeland Security | $769,427,832 | |
| 7 | National Aeronautics and Space Administration | $685,768,370 | |
| 8 | Department of State | $532,731,013 | |
| 9 | Department of Veterans Affairs | $338,491,343 | |
| 10 | National Science Foundation | $288,313,624 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | M1JZ Operation of Miscellaneous Buildings | $21,384,554,446 | |
| 2 | M181 Operation of Government-Owned Contractor-Operated (GOCO) R&D Facilities | $3,287,020,554 | |
| 3 | M159 Operation of Other Industrial Buildings | $2,986,957,321 | |
| 4 | S216 Facilities Operations Support Services | $2,523,805,759 | |
| 5 | R706 Logistics Support Services | $2,107,846,531 | |
| 6 | Z1AA Maintenance of Office Buildings | $835,550,157 | |
| 7 | R799 Other Management Support Services | $567,894,596 | |
| 8 | Z1JZ Maintenance of Miscellaneous Buildings | $499,614,190 | |
| 9 | M1EA Operation of Ammunition Facilities | $487,759,136 | |
| 10 |
R408 Program Management/ |
$442,562,818 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | New Mexico | $11,876,757,763 | |
| 2 | Tennessee | $6,867,958,959 | |
| 3 | South Carolina | $3,023,968,717 | |
| 4 | Missouri | $2,627,881,414 | |
| 5 | Texas | $2,045,165,745 | |
| 6 | Nevada | $1,271,107,597 | |
| 7 | Virginia | $840,947,216 | |
| 8 | California | $744,674,225 | |
| 9 | Colorado | $638,884,378 | |
| 10 | Florida | $608,069,763 | |
| 11 | Maryland | $600,680,860 | |
| 12 | Louisiana | $574,680,484 | |
| 13 | Georgia | $528,772,081 | |
| 14 | District of Columbia | $436,106,365 | |
| 15 | Pennsylvania | $396,271,023 | |
| 16 | Washington | $247,479,694 | |
| 17 | Alaska | $246,566,155 | |
| 18 | New York | $245,024,589 | |
| 19 | Oklahoma | $243,327,486 | |
| 20 | Alabama | $227,474,061 | |
| 21 | Guam | $186,308,191 | |
| 22 | Hawaii | $171,715,412 | |
| 23 | Mississippi | $164,369,593 | |
| 24 | North Carolina | $156,348,030 | |
| 25 | West Virginia | $129,901,115 | |
| 26 | Ohio | $115,093,166 | |
| 27 | Illinois | $91,684,570 | |
| 28 | New Jersey | $87,448,555 | |
| 29 | Massachusetts | $76,031,221 | |
| 30 | Michigan | $75,115,063 | |
| 31 | Arizona | $72,664,423 | |
| 32 | Kentucky | $63,684,094 | |
| 33 | Arkansas | $48,284,127 | |
| 34 | Wisconsin | $43,458,524 | |
| 35 | Iowa | $35,929,657 | |
| 36 | Utah | $34,397,597 | |
| 37 | Kansas | $30,962,120 | |
| 38 | Minnesota | $29,616,481 | |
| 39 | Indiana | $29,446,338 | |
| 40 | Nebraska | $27,618,902 | |
| 41 | Puerto Rico | $18,758,820 | |
| 42 | Maine | $15,444,422 | |
| 43 | Connecticut | $12,392,776 | |
| 44 | Rhode Island | $9,143,585 | |
| 45 | North Dakota | $7,737,729 | |
| 46 | Oregon | $7,339,139 | |
| 47 | Vermont | $7,291,242 | |
| 48 | Montana | $6,051,754 | |
| 49 | New Hampshire | $5,620,569 | |
| 50 | South Dakota | $4,428,570 | |
| 51 | Idaho | $3,195,941 | |
| 52 | Northern Mariana Islands | $2,685,820 | |
| 53 | Delaware | $1,677,103 | |
| 54 | U.S. Virgin Islands | $590,508 | |
| 55 | American Samoa | $120,467 |
Show all 55
Shares are of everything obligated under NAICS 56121 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 38 more
Latest 48 of 17,222 listed here. See the rest on GovTribe.
Codes under 56121
| NAICS code | Size standard |
|---|---|
| 561210 Facilities Support Services | $47 million in average annual receipts |
Quick answers
What is NAICS 56121?
NAICS 56121 is Facilities Support Services, a NAICS industry in NAICS 56, Administrative and Support and Waste Management and Remediation Services.
What is the NAICS code for jail operation on a contract or fee basis?
The NAICS code for jail operation on a contract or fee basis is 561210, Facilities Support Services. Its SBA small business size standard is $47 million in average annual receipts.
What is the NAICS code for base facilities operation support services?
The NAICS code for base facilities operation support services is 561210, Facilities Support Services. Its SBA small business size standard is $47 million in average annual receipts.
What is the NAICS code for government base facilities operation support services?
The NAICS code for government base facilities operation support services is 561210, Facilities Support Services. Its SBA small business size standard is $47 million in average annual receipts.
What codes are under NAICS 56121?
NAICS 56121 has one code under it with its own GovTribe page, 561210 Facilities Support Services.
How much do federal agencies spend under NAICS 56121?
Federal contracts under NAICS 56121 obligated $38,472,895,272 in fiscal year 2025 and $157,854,093,032 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 56121?
The contractors with the most obligated under NAICS 56121 in fiscal years 2026 and 2027 are Triad National Security, LLC ($6,396,154,908); National Technology & Engineering Solutions Of Sandia, LLC ($5,735,417,678); and Consolidated Nuclear Security, LLC ($3,640,202,566).
Which agencies buy the most under NAICS 56121?
The agencies that obligated the most under NAICS 56121 in fiscal years 2026 and 2027 are Department of Energy ($25,436,146,578), Department of the Army ($4,419,370,663) and Department of the Navy ($2,977,496,766).
Which PSC codes are used with NAICS 56121?
The PSC codes with the most obligated under NAICS 56121 in fiscal years 2026 and 2027 are M1JZ Operation of Miscellaneous Buildings, M181 Operation of Government-Owned Contractor-Operated (GOCO) R&D Facilities and M159 Operation of Other Industrial Buildings.
Where is the work under NAICS 56121 performed?
By place of performance, the states with the most contract obligations under NAICS 56121 over the last 12 months are New Mexico ($11,876,757,763), Tennessee ($6,867,958,959) and South Carolina ($3,023,968,717).
What is the latest contract opportunity under NAICS 56121?
The latest contract opportunity under NAICS 56121 is Base Operations Support Services For NSA Annapolis and US Naval Academy, Annapolis, Maryland, pre-solicitation from Naval Facilities Engineering Command (Navy), posted November 13, 2026.
On GovTribe
See everything under NAICS 56121
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
- Contacts who buy under this code
- Ask GovTribe AI about this code