Rental properties particularly boarding houses, require fast, accurate, and structured information to manage tenants, rooms, and payments at scale. This study designs and develops a web-based Rental Property Information System for “Grogol Mansion†using the Database Life Cycle (DBLC) method. Requirements were elicited via interviews and observation, then modeled with ERD and translated into a relational schema implemented in PHP–MySQL. Core modules include public room catalog & availability, account registration and booking, payment recording, tenant complaints, and an admin dashboard with multi-role access. Black-box testing and user acceptance testing (UAT) confirmed that all critical flows ran without errors, data were consistently recorded, confirmations/notifications appeared as expected, and UI response times met the ≤3-second criterion under normal load. The system improved operational efficiency, data accuracy, and service transparency, while providing a digital promotion channel. From a Management Information Systems perspective, the solution strengthens decision-making through structured data, controlled access, and auditable reports.
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