Pastor Lenssen Polytechnic College offers three year diploma course in various branches available in the college.
| S. No. | Name of the Course | Duration | Sanctioned Strength | Title awarded at the end of the Course |
| 1. | Diploma in Civil Engineering | 3 Years 6 Semesters | 60 | D.C.E |
| 3. | Diploma in Electronics & Communication Engineering | 3 Years 6 Semesters | 60 | D.E.C.E |
| 4. | Diploma in Electrical & Electronics Engineering | 3 Years 6 Semesters | 60 | D.E.E.E |
| 5. | Diploma in Mechanical Engineering | 3 Years 6 Semesters | 120 | D.M.E |