| Business | Phone |
| Becker Engineering Inc 20746 Fawnbrook Ct, Katy 77450 | (281) 829-3697 |
| Brooks & Sparks Inc 21020 Park Row Dr, Katy 77449 | (281) 578-9595 |
| Contact Engineering Katy 77450 | (281) 578-5079 |
| Lott & Brown Consulting Eng 1326 Shillington Dr, Katy 77450 | (281) 398-9363 |