PSC codes › Z1BA
PSC Z1BA — Maintenance of Air Traffic Control Towers: federal contracts
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What PSC Z1BA covers
Official definition: GSA PSC Manual (PSC April 2025.xlsx), acquisition.gov/psc-manual. Category: Facilities & Construction › Facility Related Services.
Who is winning new PSC Z1BA work
Contractors ranked by obligations on awards that started FY2024–FY2027 to date.
| Contractor | Obligations | Awards |
|---|---|---|
| WALSH FEDERAL LLC | $46.1M | 2 |
| E CORP | $38.6M | 9 |
| THE MATTHEWS GROUP INC | $13.6M | 2 |
| WEST POINT CONTRACTORS, INC. | $10.2M | 1 |
| ENFIELD ENTERPRISES LLC | $6.4M | 2 |
| CORNERSTONE CONSTRUCTION SERVICES, LLC | $5.7M | 3 |
| GUARDIAN CONSTRUCTION, INC. | $4.5M | 3 |
| MCKENZIE CONSTRUCTION & SITE DEVELOPMENT LLC | $4.4M | 1 |
| ARMSTRONG ELEVATOR COMPANY | $4.2M | 10 |
| CMP COMMERCIAL CONSTRUCTION INC | $3.4M | 1 |
How competitive is PSC Z1BA?
- 88.0% of obligations on these awards were competed.
- 21.4% of competed awards that report offers drew a single offer (n=98).
- 62.8% went to small businesses.
- The five largest contractors hold 70.4% across 77 contractors.
NAICS codes used on PSC Z1BA awards
| NAICS | Industry | Share |
|---|---|---|
| 236220 | Commercial and Institutional Building Construction | 83.3% |
| 238220 | Plumbing, Heating, and Air-Conditioning Contractors | 5.4% |
| 238290 | Other Building Equipment Contractors | 3.8% |
| 238160 | Roofing Contractors | 3.2% |
| 238210 | Electrical Contractors and Other Wiring Installation Contractors | 1.3% |
| 238170 | Siding Contractors | 0.9% |
| 333921 | Elevator and Moving Stairway Manufacturing | 0.6% |
| 238990 | All Other Specialty Trade Contractors | 0.6% |
Related PSC codes
Z2JZ Repair or Alteration of Miscellaneous Buildings · Z2AA Repair or Alteration of Office Buildings · J041 Maint/Repair/Rebuild of Equipment: Refrigeration, Air Conditioning, and Air Circulating Equipment · Z2BA Repair or Alteration of Air Traffic Control Towers · Y1JZ Construction of Miscellaneous Buildings · Y1BC Construction of Radar and Navigational Facilities · 4120 Air Conditioning Equipment · Z2AZ Repair or Alteration of Other Administrative Facilities and Service Buildings
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- Matched to your company — PSC Z1BA solicitations ranked against your capabilities, NAICS and certifications, with a fit score for each
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