NAICS Subsector 811: Repair and Maintenance
Subsector
Definition
Industries in the Repair and Maintenance subsector restore machinery, equipment, and other products to working order. These establishments also typically provide general or routine maintenance (i.e., servicing) on such products to ensure they work efficiently and to prevent breakdown and unnecessary repairs.
The NAICS structure for this subsector brings together most types of repair and maintenance establishments and categorizes them based on production processes (i.e., on the type of repair and maintenance activity performed, and the necessary skills, expertise, and processes that are found in different repair and maintenance establishments). This NAICS classification does not delineate between repair services provided to businesses versus those that serve households.
Read the full definition
Although some industries primarily serve either businesses or households, separation by class of customer is limited by the fact that many establishments serve both. Establishments repairing computers and consumer electronics products are two examples of such overlap. The Repair and Maintenance subsector does not include all establishments that do repair and maintenance. For example, a substantial amount of repair is done by establishments that also manufacture machinery, equipment, and other goods. These establishments are included in the Manufacturing sector in NAICS.
In addition, repair of transportation equipment is often provided by or based at transportation facilities, such as airports and seaports, and these activities are included in the Transportation and Warehousing sector. A particularly unique situation exists with repair of buildings. Plumbing, electrical installation and repair, painting and decorating, and other construction-related establishments are often involved in performing installation or other work on new construction as well as providing repair services on existing structures.
While some specialize in repair, it is difficult to distinguish between the two types and all are included in the Construction sector. Excluded from this subsector are establishments primarily engaged in rebuilding or remanufacturing machinery and equipment. These are classified in Sector 31-33, Manufacturing. Also excluded are retail establishments that provide after-sale services and repair. These are classified in Sector 44-45, Retail Trade.
Code facts
- Part of
-
- 81
- Codes under it
- 4
- Contract awards
- 8,359 In the last 12 months
- Contract obligations
- $4,614,089,866 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 | $24,826,009 |
| FY2026 | $3,859,587,372 |
| FY2025 | $4,614,089,866 |
| FY2024 | $4,491,440,143 |
| FY2023 | $4,204,337,490 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Techflow, Inc. | $309,772,372 | |
| 2 | Leidos, Inc. | $261,963,070 | |
| 3 | Raytheon Company | $195,788,991 | |
| 4 | Lockheed Martin Corporation | $141,049,274 | |
| 5 | S & K Security Group LLC | $136,419,965 | |
| 6 | The Boeing Company | $132,820,736 | |
| 7 | General Dynamics Land Systems Inc. | $111,381,991 | |
| 8 | Agiliti Health Inc. | $86,689,270 | |
| 9 | Northrop Grumman Systems Corp | $65,781,677 | |
| 10 | Northrop Grumman Systems Corporation | $64,897,040 |
See the full FY2025 ranking of NAICS 811 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Air Force | $971,041,795 | |
| 2 | Department of Homeland Security | $963,202,833 | |
| 3 | Department of the Army | $469,627,187 | |
| 4 | Department of the Navy | $383,723,126 | |
| 5 | Department of Veterans Affairs | $332,920,865 | |
| 6 | Missile Defense Agency | $184,980,614 | |
| 7 | Department of Health and Human Services | $142,391,908 | |
| 8 | Defense Health Agency | $94,319,992 | |
| 9 | Department of Transportation | $81,193,787 | |
| 10 | US Special Operations Command | $30,026,840 |
Top PSC codes by obligations
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | California | $588,169,938 | |
| 2 | Virginia | $539,616,265 | |
| 3 | Texas | $313,548,468 | |
| 4 | Massachusetts | $271,167,921 | |
| 5 | Florida | $224,764,168 | |
| 6 | Maryland | $159,427,295 | |
| 7 | Utah | $145,348,295 | |
| 8 | Montana | $140,130,340 | |
| 9 | Georgia | $134,351,890 | |
| 10 | Michigan | $109,728,419 | |
| 11 | Minnesota | $67,030,333 | |
| 12 | Ohio | $62,537,506 | |
| 13 | North Carolina | $58,760,244 | |
| 14 | Arizona | $47,997,135 | |
| 15 | New York | $47,880,542 | |
| 16 | Washington | $46,303,671 | |
| 17 | District of Columbia | $43,033,733 | |
| 18 | Colorado | $41,703,384 | |
| 19 | Puerto Rico | $41,336,357 | |
| 20 | Illinois | $38,908,211 | |
| 21 | Oklahoma | $38,523,342 | |
| 22 | New Hampshire | $34,317,893 | |
| 23 | Pennsylvania | $33,904,158 | |
| 24 | New Jersey | $28,682,269 | |
| 25 | Alabama | $24,771,706 | |
| 26 | Hawaii | $23,809,295 | |
| 27 | Indiana | $21,654,937 | |
| 28 | South Carolina | $20,385,749 | |
| 29 | Missouri | $18,119,219 | |
| 30 | Alaska | $14,720,341 | |
| 31 | New Mexico | $14,260,609 | |
| 32 | Kentucky | $13,906,168 | |
| 33 | Nevada | $13,469,099 | |
| 34 | Louisiana | $10,636,356 | |
| 35 | Wisconsin | $10,446,291 | |
| 36 | Oregon | $9,598,550 | |
| 37 | Mississippi | $9,269,549 | |
| 38 | Iowa | $6,808,862 | |
| 39 | South Dakota | $6,734,561 | |
| 40 | Tennessee | $6,329,113 | |
| 41 | Arkansas | $5,820,270 | |
| 42 | Connecticut | $5,504,807 | |
| 43 | Kansas | $5,255,780 | |
| 44 | Rhode Island | $4,730,651 | |
| 45 | Guam | $3,520,876 | |
| 46 | West Virginia | $3,093,491 | |
| 47 | Wyoming | $2,596,369 | |
| 48 | Maine | $2,391,552 | |
| 49 | Delaware | $2,249,943 | |
| 50 | North Dakota | $2,077,602 | |
| 51 | Nebraska | $1,981,290 | |
| 52 | Idaho | $1,758,046 | |
| 53 | U.S. Virgin Islands | $386,718 | |
| 54 | Vermont | $349,052 | |
| 55 | Northern Mariana Islands | $37,335 | |
| 56 | American Samoa | $23,842 |
Show all 56
Shares are of everything obligated under NAICS 811 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 107,737 listed here. See the rest on GovTribe.
Codes under 811
Quick answers
What is NAICS 811?
NAICS 811 is Repair and Maintenance, a subsector in NAICS 81, Other Services (except Public Administration).
What codes are under NAICS 811?
NAICS 811 has 4 codes under it with their own GovTribe pages, including 8111 Automotive Repair and Maintenance, 8112 Electronic and Precision Equipment Repair and Maintenance and 8113 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance.
How much do federal agencies spend under NAICS 811?
Federal contracts under NAICS 811 obligated $4,614,089,866 in fiscal year 2025 and $17,194,280,879 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 811?
The contractors with the most obligated under NAICS 811 in fiscal years 2026 and 2027 are Techflow, Inc. ($309,772,372); Leidos, Inc. ($261,963,070); and Raytheon Company ($195,788,991).
Which agencies buy the most under NAICS 811?
The agencies that obligated the most under NAICS 811 in fiscal years 2026 and 2027 are Air Force ($971,041,795), Department of Homeland Security ($963,202,833) and Department of the Army ($469,627,187).
Which PSC codes are used with NAICS 811?
The PSC codes with the most obligated under NAICS 811 in fiscal years 2026 and 2027 are J063 Maintenance, Repair and Rebuilding of Equipment: Alarm, Signal, and Security Detection Systems; J065 Maintenance, Repair and Rebuilding of Equipment: Medical, Dental, and Veterinary Equipment and Supplies; and J059 Maintenance, Repair and Rebuilding of Equipment: Electrical and Electronic Equipment Components.
Where is the work under NAICS 811 performed?
By place of performance, the states with the most contract obligations under NAICS 811 over the last 12 months are California ($588,169,938), Virginia ($539,616,265) and Texas ($313,548,468).
What is the latest contract opportunity under NAICS 811?
The latest contract opportunity under NAICS 811 is IDIQ generator service and repairs, award notice, posted November 12, 2026.
On GovTribe
See everything under NAICS 811
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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