- KAPP Engineering Pty Ltd 1U1a/ 37 Delawney St, Balcatta, WA
- MSP Engineering Pty Ltd 224 Mumford Pl, Balcatta, WA
- Structerre Consulting Engineers 31 Erindale Rd, Balcatta, WA
- Barnard Enterprises 418 Kenhelm St, Balcatta, WA
- Chadson Engineering Pty Ltd 515 Cressall Rd, Balcatta, WA
- Ace Electronics Engineering 6U1/ 23 Geddes St, Balcatta, WA
- Kasa Consulting 7U2/ 12 Mumford Pl, Balcatta, WA
- Phoenix Environmental Sciences 8Shop 1/ 511 Wanneroo Rd, Balcatta, WA
- Dempers & Seymour Pty Ltd 9231 Balcatta Rd, Balcatta, WA
- EML Air Pty Ltd 10Unit 7 16 Ladger Rd, Balcatta, WA
- Fugro Group 114 Ledgar Rd, Balcatta, WA
- Accurate Patterns 1214 Green Ave, Balcatta, WA
- Accurate Patterns / R.D.& A. McRae 1314 Green Ave, Balcatta, WA
- Orbital Consulting 141 Whipple St, Balcatta, WA
- Pavement Management Services Pty Ltd 15U 4/ 2 Cressall Rd, Balcatta, WA
- Skilltech Consulting Pty Ltd 16240 Balcatta Rd, Balcatta, WA