NAICS Sector 56: Administrative and Support and Waste Management and Remediation Services
Sector
Definition
The Administrative and Support and Waste Management and Remediation Services sector comprises establishments performing routine support activities for the day-to-day operations of other organizations. These essential activities are often undertaken in-house by establishments in many sectors of the economy. The establishments in this sector specialize in one or more of these support activities and provide these services to clients in a variety of industries and, in some cases, to households.
Read the full definition
Activities performed include: office administration, hiring and placing of personnel, document preparation and similar clerical services, solicitation, collection, security and surveillance services, cleaning, and waste disposal services. The administrative and management activities performed by establishments in this sector are typically on a contract or fee basis. These activities may also be performed by establishments that are part of the company or enterprise.
However, establishments involved in administering, overseeing, and managing other establishments of the company or enterprise are classified in Sector 55, Management of Companies and Enterprises. Establishments in Sector 55, Management of Companies and Enterprises, normally undertake the strategic and organizational planning and decision-making role of the company or enterprise. Government establishments engaged in administering, overseeing, and managing governmental programs are classified in Sector 92, Public Administration.
Government contracts for this service: PSC M1JZ Operation of Miscellaneous Buildings
Code facts
- Codes under it
- 2
- Contract awards
- 35,436 In the last 12 months
- Contract obligations
- $68,499,411,976 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $3,936,274,887 |
| FY2026 | $61,460,475,780 |
| FY2025 | $68,499,411,976 |
| FY2024 | $66,687,393,005 |
| FY2023 | $65,751,570,896 |
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 | $3,640,136,497 | |
| 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 | $1,654,339,895 | |
| 8 | CSI Aviation, Inc. | $1,563,396,096 | |
| 9 | Hanford Tank Waste Operations & Closure, LLC | $1,289,458,320 | |
| 10 | Mission Support & Test Services LLC | $1,142,896,546 |
See the full FY2025 ranking of NAICS 56 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Energy | $30,651,610,038 | |
| 2 | Department of Homeland Security | $7,688,578,383 | |
| 3 | Department of the Army | $5,927,436,884 | |
| 4 | Department of the Navy | $3,805,815,476 | |
| 5 | Air Force | $3,541,322,381 | |
| 6 | Department of Veterans Affairs | $1,783,014,642 | |
| 7 | Department of State | $1,687,281,705 | |
| 8 | Department of Health and Human Services | $1,527,928,875 | |
| 9 | General Services Administration | $980,511,024 | |
| 10 | National Aeronautics and Space Administration | $872,645,780 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | M1JZ Operation of Miscellaneous Buildings | $21,384,597,016 | |
| 2 | S206 Guard Services | $6,457,020,137 | |
| 3 | M181 Operation of Government-Owned Contractor-Operated (GOCO) R&D Facilities | $3,287,020,554 | |
| 4 | M159 Operation of Other Industrial Buildings | $2,986,957,321 | |
| 5 | R706 Logistics Support Services | $2,882,369,612 | |
| 6 | R499 Other Professional Services | $2,841,727,303 | |
| 7 | S216 Facilities Operations Support Services | $2,559,590,944 | |
| 8 | F999 Other Environmental Services, Studies, and Analytical Support | $2,120,118,023 | |
| 9 | S201 Custodial Janitorial Services | $1,483,001,872 | |
| 10 | V211 Air Passenger Service | $1,475,794,225 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | New Mexico | $12,107,699,639 | |
| 2 | Tennessee | $8,541,246,635 | |
| 3 | Texas | $5,155,765,336 | |
| 4 | South Carolina | $4,244,365,319 | |
| 5 | Virginia | $3,262,651,396 | |
| 6 | Missouri | $2,841,652,370 | |
| 7 | Washington | $2,282,635,819 | |
| 8 | California | $2,115,949,172 | |
| 9 | District of Columbia | $1,531,308,755 | |
| 10 | Florida | $1,492,886,051 | |
| 11 | Maryland | $1,404,075,792 | |
| 12 | Nevada | $1,353,925,414 | |
| 13 | Colorado | $1,016,607,912 | |
| 14 | Georgia | $920,122,834 | |
| 15 | Kentucky | $894,030,049 | |
| 16 | New York | $863,607,436 | |
| 17 | Ohio | $751,865,870 | |
| 18 | Louisiana | $735,562,951 | |
| 19 | Pennsylvania | $663,503,705 | |
| 20 | Idaho | $571,652,374 | |
| 21 | Alaska | $551,454,048 | |
| 22 | New Jersey | $386,918,589 | |
| 23 | Arizona | $370,185,364 | |
| 24 | Oklahoma | $340,107,329 | |
| 25 | Hawaii | $314,463,519 | |
| 26 | Illinois | $303,239,062 | |
| 27 | Michigan | $296,308,705 | |
| 28 | North Carolina | $284,024,111 | |
| 29 | Alabama | $276,141,751 | |
| 30 | Massachusetts | $266,424,798 | |
| 31 | Utah | $240,570,711 | |
| 32 | Mississippi | $237,754,900 | |
| 33 | Guam | $227,910,020 | |
| 34 | West Virginia | $194,381,148 | |
| 35 | Puerto Rico | $122,624,964 | |
| 36 | Northern Mariana Islands | $120,530,688 | |
| 37 | Minnesota | $113,416,417 | |
| 38 | Indiana | $103,732,727 | |
| 39 | Kansas | $97,700,259 | |
| 40 | Wisconsin | $93,162,326 | |
| 41 | Connecticut | $90,476,105 | |
| 42 | Montana | $88,061,110 | |
| 43 | Oregon | $86,007,026 | |
| 44 | Arkansas | $83,214,110 | |
| 45 | South Dakota | $71,671,708 | |
| 46 | Iowa | $69,142,528 | |
| 47 | Nebraska | $56,849,069 | |
| 48 | Rhode Island | $53,128,134 | |
| 49 | Maine | $43,209,479 | |
| 50 | North Dakota | $32,537,808 | |
| 51 | New Hampshire | $31,252,628 | |
| 52 | Vermont | $17,854,767 | |
| 53 | Wyoming | $13,044,179 | |
| 54 | Delaware | $11,027,635 | |
| 55 | U.S. Virgin Islands | $1,473,242 |
Show all 55
Shares are of everything obligated under NAICS 56 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 154,280 listed here. See the rest on GovTribe.
Codes under 56
Quick answers
What is NAICS 56?
NAICS 56 is Administrative and Support and Waste Management and Remediation Services, a sector of the North American Industry Classification System.
What codes are under NAICS 56?
NAICS 56 has 2 codes under it with their own GovTribe pages: 561 Administrative and Support Services and 562 Waste Management and Remediation Services.
How much do federal agencies spend under NAICS 56?
Federal contracts under NAICS 56 obligated $68,499,411,976 in fiscal year 2025 and $266,335,126,545 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 56?
The contractors with the most obligated under NAICS 56 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 ($3,640,136,497).
Which agencies buy the most under NAICS 56?
The agencies that obligated the most under NAICS 56 in fiscal years 2026 and 2027 are Department of Energy ($30,651,610,038), Department of Homeland Security ($7,688,578,383) and Department of the Army ($5,927,436,884).
Which PSC codes are used with NAICS 56?
The PSC codes with the most obligated under NAICS 56 in fiscal years 2026 and 2027 are M1JZ Operation of Miscellaneous Buildings, S206 Guard Services and M181 Operation of Government-Owned Contractor-Operated (GOCO) R&D Facilities.
Where is the work under NAICS 56 performed?
By place of performance, the states with the most contract obligations under NAICS 56 over the last 12 months are New Mexico ($12,107,699,639), Tennessee ($8,541,246,635) and Texas ($5,155,765,336).
What is the latest contract opportunity under NAICS 56?
The latest contract opportunity under NAICS 56 is Maintenance & cleaning Services at Combat Arms Range, Yokota AB, Japan, pre-solicitation from Pacific Air Forces (USAF), posted November 12, 2026.
On GovTribe
See everything under NAICS 56
- 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