Our system enhances parking facility efficiency and sustainability via two components: Parking Guidance and Energy Management. PG : With the rise in vehicle usage and urban development, finding a vacant spot in large, multi-floor underground parking facilities has become a challenge. Our system addresses this issue by directing users to available parking spots swiftly, saving time, fuel, and reducing CO2 emissions. EM : Underground parking facilities often require round-the-clock lighting, leading to energy wastage when lights are left on unnecessarily. Our system offers a smart solution to control parking basement lights wirelessly without major modifications to existing building systems. Unlike other systems that use motion sensors and risk leaving cars in the dark, our system ensures the light stays on over parked cars while turning off lights over vacant spots. This dual approach not only streamlines parking but also promotes energy conservation and security.