PSC C1GB

Overview

Product Service Codes (PSC) are a standardized taxonomy the U.S. government uses to classify what is being procured so spending can be tracked, analyzed, and reported across federal systems. PSCs are selected and reported in the Federal Procurement Data System (FPDS) and maintained through the Product and Service Code Manual managed on Acquisition.gov. ¹

PSC C1GB denotes Architect and Engineering – Construction services specifically for Food or Grain Storage Buildings. Agencies use C1GB when the predominant requirement is A-E services that support the construction of new food or grain storage buildings, distinct from maintenance, repair/alteration, purchase, or lease/rental codes for the same facility type. ²

See also on G2X:

• G2X — PSC C1GB overview: https://app.g2xchange.com/psc/C1GB
• Related PSC Y1GB (Construction of Food or Grain Storage Buildings): https://app.g2xchange.com/psc/Y1GB
• Related PSC Z2GB (Repair or Alteration of Food or Grain Storage Buildings): https://app.g2xchange.com/psc/Z2GB

What this PSC covers

• A-E services tied to the construction of new food or grain storage buildings where A-E is the predominant requirement. ²
• Project planning and design services performed as A-E work in support of constructing these buildings. Not specified by official sources for further detail. ¹
• Use for food/grain storage building facility type; other warehouse buildings (not food/grain) map to C1GZ. ²
• Excludes maintenance activities, which use Z1GB. ²
• Excludes repair or alteration activities, which use Z2GB. ²
• Excludes the construction execution itself (use Y1GB). ²
• Excludes purchase or lease/rental of such buildings (use E1GB or X1GB). ²

Related NAICS and PSC codes

FPDS reporting notes

• The PSC is recorded in FPDS data element 8A (“Product or Service Code”); environmental attributes, when applicable, are reported under data element 8L. ²
• Select the PSC based on the predominant requirement of the action (e.g., choose C1GB when A-E services for constructing a food/grain storage building predominate). ²

Frequently asked questions

• What kinds of work belong under PSC C1GB?

  • Use C1GB when the primary need is architect and engineering services for constructing new food or grain storage buildings. Construction execution, maintenance, and repair/alteration for this facility type map to Y1GB, Z1GB, and Z2GB, respectively. ²

• How is C1GB different from C1GZ?

  • C1GB is specific to food or grain storage buildings; C1GZ covers “Other Warehouse Buildings.” Selecting between them depends on the facility subtype described in the PSC Manual. ²

• Is there an official NAICS crosswalk for C1GB?

  • Not specified by official sources. ¹

• Does PSC selection affect small business eligibility?

  • Small business eligibility and set-aside applicability are determined by the NAICS code and SBA size standards designated for the acquisition, not by the PSC. Contracting officers assign a NAICS code, and SBA publishes the size standards by NAICS. ⁴

• Are “green building” or sustainability attributes captured with C1GB?

  • Environmental attributes, when relevant to a procurement, are reported in FPDS under data element 8L regardless of PSC. The PSC Manual explains available environmental attribute selections and how to report them. ²

Useful resources

• G2X — PSC C1GB overview: https://app.g2xchange.com/psc/C1GB
• Acquisition.gov — PSC Manual (current editions and files). ¹
• Acquisition.gov — PSC Manual April 2025 (official PDF). ²
• Acquisition.gov — PSC Manual Archives. ³

References

1. Acquisition.gov — Product and Service Code Manual library (current and all editions). https://www.acquisition.gov/psc-manual/all
2. Acquisition.gov — Product and Service Codes (PSC) Manual, April 2025 Edition (official PDF). https://login.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
3. Acquisition.gov — Product and Service Code Manual Archives. https://login.acquisition.gov/psc-manual/archives
4. U.S. Small Business Administration — Small business size standards overview and table (by NAICS). https://www.sba.gov/partners/contracting-officials/small-business-procurement/small-business-size-standards