NAICS 561210: Facilities Support Services — Federal Contracts

What NAICS 561210 covers

The North American Industry Classification System (NAICS) is the standard the federal government uses to classify the industry of every contractor and every procurement. NAICS 561210 identifies businesses primarily engaged in facilities support services. When a contracting officer publishes a solicitation on SAM.gov, they tag it with the NAICS code that best matches the work — which is why getting your NAICS portfolio right inside SAM is the single most important step for showing up in agency searches.

Who buys NAICS 561210?

The federal agencies awarding the most contract value to vendors in this NAICS, based on 77 contractors tracked in the Mindy contractor database:

1. 1Department Of
2. 2Energy
3. 3Dept Of The Navy
4. 4Dept Of The Army
5. 5Dept Of The Air Force

Source: aggregated from the Mindy contractor database (prime contractor disclosures via SBA + agency directories).

Top contractors in NAICS 561210

The largest prime contractors associated with NAICS 561210, ranked by total reported federal contract value. These are your most likely incumbents — and your most likely teaming partners on recompetes:

1. 1
   Pantexas Deterrence LLC

   $30.1B total reported value
2. 2
   Triad National Security LLC

   $5.2B total reported value
3. 3
   San Antonio Family Endeavors INC.

   $3.3B total reported value
4. 4
   KBR Wyle Services LLC

   $2.1B total reported value
5. 5
   Amentum Services INC.

   $1.3B total reported value
6. 6
   Hensel Phelps Construction CO.

   $1.3B total reported value
7. 7
   Aptim Federal Services LLC

   $1.1B total reported value
8. 8
   Honeywell Federal Manufacturing & Technologies LLC

   $1.1B total reported value

Values reflect each contractor's aggregate reported federal contract value (across all of their NAICS codes, not just 561210). Use as a ranking signal, not as a per-NAICS award total.