What Does PSC C221 Cover?

PSC C221 (ARCHITECT AND ENGINEERING- GENERAL: PLUMBING SYSTEMS) is assigned to contract actions where the primary deliverable involves architect and engineering- general: plumbing systems. Contracting officers assign this code when creating or modifying contract actions in the Federal Procurement Data System (FPDS), and it flows through to USASpending.gov where it becomes part of the public record of federal procurement activity.

Service codes represent work performed by contractors on behalf of the federal government. These range from professional consulting and IT services to facilities maintenance and logistics support. Service contracts typically require detailed statements of work (SOW) or performance work statements (PWS), and are often awarded using best-value tradeoff or lowest-price technically acceptable (LPTA) evaluation criteria.

Understanding Service Code C221

The first character of a PSC code indicates its broad category. Codes beginning with letters A through Z generally represent services and R&D, while codes beginning with numbers (1-9) represent products and supplies. PSC C221 begins with "C," placing it in the service classification.

Federal agencies use PSC codes alongside NAICS codes to classify procurements. While NAICS codes describe the contractor's industry, PSC codes describe the product or service being purchased. A contractor with a single NAICS code may deliver goods or services across many different PSC codes. Understanding both classification systems is essential for identifying relevant contract opportunities and analyzing your competitive landscape.

How to Compete for PSC C221 Contracts

To pursue federal contracts classified under PSC C221, contractors should take the following steps:

• Register on SAM.gov — All federal contractors must maintain an active registration in the System for Award Management. See our SAM.gov registration guide for step-by-step instructions.
• Select appropriate NAICS codes — Ensure your SAM.gov profile includes NAICS codes that align with the architect and engineering- general: plumbing systems market. Visit our NAICS code directory to identify the best codes for your business.
• Monitor solicitations — Set up saved searches on SAM.gov filtered by PSC C221 to receive notifications when new opportunities are posted.
• Review past awards — Analyze historical contract awards under this PSC code to understand typical contract values, competition levels, and the agencies most active in this space.
• Develop capability statements — Service contracts typically require demonstrated past performance and technical capability. Prepare a capability statement that highlights your relevant experience in architect and engineering- general: plumbing systems.

• What is PSC code C221?

  PSC code C221 is a federal procurement classification code for architect and engineering- general: plumbing systems. It is categorized as a Service code and is used by federal contracting officers to classify contract actions in the Federal Procurement Data System (FPDS). This code helps track government spending patterns and enables contractors to identify relevant procurement opportunities.

• How much does the federal government spend on PSC C221?

  The federal government has obligated $1,451,079 under PSC C221. This figure represents cumulative obligations reported through USASpending.gov and includes new awards, modifications, and exercised options.

• How is PSC C221 different from a NAICS code?

  PSC codes describe what is being purchased — in this case, architect and engineering- general: plumbing systems. NAICS codes describe the contractor's industry classification. A single contract has both a PSC code (describing the deliverable) and a NAICS code (describing the type of business performing the work). Both codes appear on every contract action in the federal procurement system.

• How do I find contracts under PSC C221?

  Search for active solicitations on SAM.gov using PSC code C221 as a filter. For historical awards, use USASpending.gov to analyze past contract actions, identify buying agencies, and review award values. You can also use our Contract Search tool to explore related contractors and awards.

• What type of contract is PSC C221?

  PSC C221 is classified as a Service code. Service codes represent work performed by contractors, typically governed by a statement of work (SOW) or performance work statement (PWS).