Federal facilities support and maintenance contracts: how to find and bid them

The codes to search

Every notice on SAM.gov carries a NAICS code (the industry) and usually a PSC code (what's being bought). Searching by code finds notices whose titles don't use the words you'd type.

Size limits are from SBA's table at 13 CFR 121.201 as of October 2026. The limit that counts is the one for the NAICS code on the notice you're bidding. See the SBA table of size standards.

The three-activity rule. SBA's footnote to 561210 says a contract is "Facilities Support Services" only if it requires three or more separate activities. If one activity is 50 percent or more of the contract's value, the contract should use that activity's code instead. So a contract that's mostly cleaning should be coded 561720, not 561210. If you think a notice uses the wrong code, you can raise it with the contracting officer before the deadline.

How to search SAM.gov (free)

1. Go to SAM.gov Contract Opportunities search. You don't need an account to search.
2. Under the NAICS filter, enter 561210. Under Product and Service Codes, add S216. Also try keywords like base operations, BOS, facility maintenance and O&M.
3. Filter Place of Performance and notice type. For big contracts, Sources Sought notices are worth answering: they come months before the bid.
4. Keep the status on active notices, then open each one and read the attachments. The real details are in the PDFs, not the summary.
5. If you sign in (SAM.gov uses a free Login.gov account), you can save the search and get email notices when new matches post.

Notice types matter. A Sources Sought or RFI isn't a bid; the agency is asking who's out there. Answering one with a short capability statement is free, and it can help convince the agency to set the work aside for small businesses. A Presolicitation says a bid is coming. A Solicitation or Combined Synopsis/Solicitation is the actual request for prices.

To submit an offer you'll need an active entity registration in SAM.gov with a Unique Entity ID. Registration is free. Companies that charge to "register" you are optional third parties, not the government. Registration can take weeks, so start before you find the perfect bid.

Set-asides

Even large base-operations contracts are sometimes set aside for small businesses, because the 561210 size limit is high. The common types:

• Total Small Business: any company under the size limit for the notice's NAICS code can bid. No separate certification is needed beyond your SAM.gov representations.
• 8(a), HUBZone, Women-Owned (WOSB/EDWOSB), Service-Disabled Veteran-Owned (SDVOSB): only firms certified in that program can bid. These certifications are free through SBA at certify.sba.gov, but approval takes time.
• No set-aside (full and open): anyone can bid, including large firms.

What a facilities support solicitation asks for

• A long Performance Work Statement with annexes for each service: maintenance, custodial, grounds, pest, refuse, and more.
• Technical and management volumes: staffing plan, key personnel resumes, quality control, safety, and a phase-in (transition) plan.
• Past performance on contracts of similar size and scope, often the deciding factor.
• Several wage determinations covering many job classes, and sometimes a collective bargaining agreement from the current contractor.
• Work-order systems: many contracts expect you to track service calls and preventive maintenance in a maintenance management system.

Common mistakes

• Missing the incumbent's union agreement. Under federal service contract rules, a new contractor generally has to pay at least the wages and fringe benefits in the predecessor's collective bargaining agreement. Check the attachments.
• Bidding alone when teaming would win. If you can't show past performance on every service, a teaming partner or subcontract role may be the realistic way in. Large primes post subcontracting opportunities on SBA's SubNet.
• Underpricing phase-in. Hiring, badging and training a full crew before day one costs money.
• Skipping the questions period. Big PWS documents have gaps. Questions and answers are often published as an amendment that everyone must acknowledge.
• Missing an amendment. Amendments change deadlines, quantities and wage rates. Check the notice again the day before you submit, and acknowledge every one.
• Submitting late or the wrong way. Late offers are generally rejected. Follow the submission method and file-size limits exactly.

This guide is general information from the Bid Brief team, not legal or contracting advice. The solicitation and its amendments control. Last reviewed Oct 27, 2026.