GGB It depends on whether you are a local or foreign investor, your structure, the city and the activities — so any single figure online is indicative at best. Foreign investors add an investment registration layer with the Ministry of Investment; everyone deals with commercial registration, a municipal licence through Balady and food-safety requirements under the SFDA. Treat the licences as one part of a much larger opening budget, and confirm current fees with the relevant authority.
From Saudi Arabia Restaurant Licence Cost: Every Fee, Explained — the full reading, with the method behind this answer.