NAICS 561210: Facilities Support Services
Covers providing several support services within a client's facilities as a bundle — operations and maintenance, janitorial, grounds, security, and mail in one contract. The code for facility O&M and base operations support (BOS) contracts.
What work falls under NAICS 561210
- Building operations & maintenance (O&M) contracts
- Base operations support bundling multiple facility functions
- Combined custodial + maintenance + grounds contracts
- Government facility management with CMMS work-order tracking
How to win contracts under this code
- Register in SAM.gov with 561210 as a primary or secondary NAICS code, and confirm you're under the size standard for set-aside eligibility.
- Set a SAM.gov saved search for NAICS 561210 filtered to your set-aside types and places of performance.
- Build a capability statement that leads with this code and your most relevant past performance.
- For each solicitation, build a compliance matrix before writing — most losses under this code are compliance losses.
Bidding on a NAICS 561210 solicitation?
Generate your capability statement and compliance matrix free — no account required.
Frequently asked questions
When is work solicited under 561210 instead of a single-trade code?
When the agency bundles multiple functions into one contract. A custodial-only contract uses 561720; custodial plus HVAC maintenance plus grounds in one PWS typically goes out under 561210. The bundle means broader licensing and staffing requirements — read the PWS scope carefully.
Is the high size standard good or bad for small businesses?
Good: at $47M in average receipts, established regional facility companies still qualify as 'small', and the government sets aside a large share of facility support work. The practical barrier is past performance breadth, which teaming or a strong subcontractor bench can solve.
Full industry guide: Facilities Maintenance Government Contracts — including state-by-state pages for Texas, California, Florida, and more.