All 6 companies
A–Z by legal name| Company | Registry number | Registered | Status | City |
|---|---|---|---|---|
| PARSONS CONSTRUCTORS & FABRICATORS INC. | 602348266 | 2003-12-09 | Active | PASADENA |
| PARSONS CONSTRUCTORS INC. | 600323038 | 2003-07-18 | Active | PASADENA |
| PARSONS GOVERNMENT SERVICES INTERNATIONAL INC. | 601228459 | 2003-07-18 | Active | PASADENA |
| PARSONS WATER & INFRASTRUCTURE INC. | 602296717 | 2003-05-16 | Active | PASADENA |
| TETRA TECH CONSTRUCTION SERVICES, INC. | 602329471 | 2003-09-23 | Dissolved | PASADENA |
| TETRA TECH EC, INC. | 602272829 | 2003-02-19 | Active | PASADENA |