A Smart Parking System is created to address the lack of easy parking room at multi-tenant buildings and the increasing number of cars in cities and institutions. The Smart Parking System implemented with Arduino Uno as the core controlling unit together with ultrasonic sensors that relay information to ESP32 via Wi-Fi. The primary mission of the project is to alleviate traffic jams during peak times as well as reduce the waiting time for customers and finally enhance the service quality of the system by giving live information on parking space availability. The hardware and software integration designs along with the sensor calibration for microcontroller application and wireless system configuration are presented in this document. The experiment was conducted in a laboratory with the primary goal of measuring the distance and maintaining reliable data flow. The findings indicate that they are able to park their vehicles much more efficiently and also, traffic was much reduced during their return movements if they received the real-time parking information. The campus infrastructure development the report addresses the signal blockage problems even though the exact sensor mounting location strategy is employed and correction suggestions are given. The Smart Parking System is a breakthrough parking method which can be used for various parking locations, including its implementation in a smart city, that are both affordable and flexible.