PSC C1EZ

Overview

The Product and Service Code system is the federal government’s standardized taxonomy for classifying what is being procured. PSCs are reported in the Federal Procurement Data System (FPDS) and maintained through the PSC Manual to support spend tracking, analysis, and reporting across agencies. The PSC is entered in FPDS as the “Product or Service Code” for each action. ¹

PSC C1EZ is defined in the PSC Manual under Category C1 (Architect and Engineering–Construction) as “Architect and Engineering–Construction: Other Industrial Buildings.” It classifies A-E services related to the construction of industrial buildings that are not captured by more specific C1E subcategories (e.g., ammunition, maintenance, production, ship construction/repair, tank automotive facilities). Agencies select this code in FPDS when those A-E construction services are the predominant buy. ¹

What this PSC covers

• A-E services in support of construction for industrial buildings categorized as “other industrial,” per the C1E family. ¹
• Projects where A-E construction work on industrial buildings is the predominant component reported in FPDS data element 8A. ¹
• Industrial building types not otherwise specified under C1EA (Ammunition Facilities), C1EB (Maintenance Buildings), C1EC (Production Buildings), C1ED (Ship Construction and Repair Facilities), or C1EE (Tank Automotive Facilities). ¹
• Classification of “what was bought” for A-E construction services, distinct from direct construction execution or facility maintenance categories. ¹
• Use alongside FPDS environmental attributes reporting (if applicable) via data element 8L when relevant to the predominant service. ¹

Related NAICS and PSC codes

Source: PSC Manual (Category C1, Y1, Z1 listings). ¹

Code family context and boundaries

• Category C1 includes A-E services tied to construction across multiple facility types. Within this family, C1EZ is the residual industrial-building entry when a more specific C1E code does not apply. Adjacent categories include Y1EZ for construction and Z1EZ for maintenance of other industrial buildings. ¹
• FPDS guidance directs agencies to choose the PSC based on the predominant product or service purchased. For mixed-scope actions, select the code aligned to the principal A-E construction service associated with the industrial building requirement. ¹

Frequently asked questions

• What does PSC C1EZ represent?
  • PSC C1EZ represents architect and engineering services in support of construction for industrial buildings that are not otherwise categorized within specific C1E industrial subcodes. It sits under Category C1, which is dedicated to A-E construction services. ¹
• How is C1EZ different from Y1EZ or Z1EZ?
  • C1EZ covers A-E construction services; Y1EZ covers the construction itself; Z1EZ covers maintenance of other industrial buildings. Agencies should select the code matching the predominant activity. ¹
• Is there an official PSC-to-NAICS crosswalk for C1EZ?
  • Not specified by official sources ².
• How should an agency report environmental attributes for C1EZ actions?
  • FPDS collects environmental attributes in data element 8L (“Recovered Materials/Environmental Attributes”). When applicable and aligned to the predominant service, agencies may record attributes such as energy-efficient or environmentally preferable. ¹
• Does C1EZ include design-build delivery methods?
  • Not specified by official sources ².

Useful resources

• G2X — PSC C1EZ: https://app.g2xchange.com/psc/C1EZ
• Product and Service Codes (PSC) Manual — April 2025 (current): https://login.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf ¹
• PSC Manual landing page (official index): https://login.acquisition.gov/psc-manual ²
• PSC Manual archives: https://login.acquisition.gov/psc-manual/archives ³

References

1. Product and Service Codes (PSC) Manual, April 2025 Edition (Category C1, Y1, Z1; FPDS usage and environmental attributes). https://login.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
2. PSC Manual — Acquisition.gov landing page (official index and access point). https://login.acquisition.gov/psc-manual
3. PSC Manual archives — prior editions. https://login.acquisition.gov/psc-manual/archives