LockedBox is a full-featured peer-to-peer storage marketplace built using the MERN stack that connects hosts with renters seeking secure and affordable storage spaces. The platform enables homeowners and businesses to monetize their unused spaces by listing garages, basements, parking spaces, storage units, and spare rooms, while renters can easily search, compare, book, and securely rent storage based on their location and requirements. The application includes real-time communication, digital contracts, secure payments through Stripe, and a complete booking lifecycle, making it a scalable SaaS marketplace for the self-storage industry.