PSC Z1NZ: Maintenance of Other Utilities
Z1NZ is the product and service code (PSC) federal agencies use for maintenance of other utilities, in the maint, alter, repair buildings group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 1
- Spending, FY2026
- $16.6 million
- Share to small businesses
- 53%
Open contracts with PSC Z1NZ, due soonest
- 657A5-26-111, Triennial Electrical Testing
✦ The VA's Network Contracting Office 15 wants a contractor to do three-yearly electrical testing, inspection and maintenance of the power distribution system at the Marion VA…
Due in 30 daysNov 9, 2026
Where Z1NZ sits in the PSC Manual
- Category: Service
- Group Z: Maint, Repair, Alter Real Property
- Group Z1: Maint, Alter, Repair Buildings
- Code Z1NZ: Maintenance of Other Utilities
NAICS codes used with PSC Z1NZ
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with Z1NZ most often:
| NAICS | Industry | Spent, last 3 years |
|---|---|---|
| 236220 | Commercial and Institutional Building Construction | $20 million |
| 561621 | Security Systems Services (except Locksmiths) | $8.4 million |
| 561210 | Facilities Support Services | $7 million |
| 238210 | Electrical Contractors and Other Wiring Installation Contractors | $5.4 million |
| 238290 | Other Building Equipment Contractors | $5.4 million |
| 811210 | Electronic and Precision Equipment Repair and Maintenance | $4.5 million |
Who buys under PSC Z1NZ
Agencies with the most contract dollars under Z1NZ over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Department of the Navy | $41 million |
| Department of the Air Force | $12.5 million |
| Department of the Army | $10.1 million |
| Department of State | $4.3 million |
| Department of Veterans Affairs | $3.7 million |
| National Gallery of Art | $3.6 million |
| National Aeronautics and Space Administration | $2.4 million |
| U.S. Coast Guard | $973,798 |
Federal spending under PSC Z1NZ by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $25.7 million |
| FY2025 | $38.5 million |
| FY2026 | $16.6 million |
| FY2027 (so far) | $118,212 |
Who wins PSC Z1NZ contracts
| Company | Obligated, last 3 years |
|---|---|
| Sernotti Electrical Services LLC | $4.8 million |
| Advanced Management Group, L.L.C. | $4.1 million |
| Elcon Enterprises Inc | $3.6 million |
| Cci Facility Support Services, LLC | $3.6 million |
| Johnson Controls Fire Protection LP | $3.3 million |
| Witco Industries LTD. | $3 million |
| Toshiba Infrastructure Systems & Solutions Corporation | $3 million |
| Edco Disposal Corp | $2.6 million |
| Miscellaneous Foreign Awardees | $2.5 million |
| Amentum Technology, Inc. | $2.3 million |
Related PSC codes
- Z111 Maint – Rep – Alt/Office BLDGS
- Z112 Maint – Rep – Alt/Conf Space & Fac
- Z119 Maint – Rep – Alt/Other Admin BLDGS
- Z121 Maint – Rep – Alt/Air Traffic Towers
- Z122 Maint – Rep – Alt/Air Traffic TNG Fac
- Z123 Maint – Rep – Alt/Radar & Nav Fac
- Z124 Maint – Rep – Alt/Airport Runways
- Z125 Maint – Rep – Alt/Airport Terminals
- Z126 Maint – Rep – Alt/Missile Systems Fac
- Z127 Maint – Rep – Alt/Elct & Comm Sys Fac
Frequently asked questions
What is PSC Z1NZ?
Z1NZ is the service code in the federal Product and Service Code (PSC) Manual for maintenance of other utilities, under Z (Maint, Repair, Alter Real Property) and Z1 (Maint, Alter, Repair Buildings). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC Z1NZ?
Most federal contract dollars under PSC Z1NZ go with NAICS 236220 (Commercial and Institutional Building Construction), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC Z1NZ?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 1 open notices use PSC Z1NZ right now. FedReady can match new ones to your business and email you, free.