Rahman, Md. MosaddequrRasheduzzaman, MirzaRahman, Md. MosaddequrKhandaker, Md. Takky HasanKabir, Mohammad IbtehazChowdhury, Fidaul MowlaSiddique, Mohammad SamirHossain, A K M Shakhawat2026-04-262026-04-2620252025-10ID 20121059ID 21121001ID 18121056ID 20321005ID 19221025http://hdl.handle.net/10361/28083Cataloged from PDF version of final year design project.Includes bibliographical references (page 64).This final year design project is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2025.This project presents the design and implementation of a Residential Building Management System (BMS) aimed at improving energy efficiency, safety and comfort in modern homes. The proposed system integrates IoT-based automation using the ESP8266 NodeMCU microcontroller and various sensors to monitor temperature, humidity, motion, fire and gas leakage. It allows real-time supervision and remote operation of lighting, HVAC, safety and security systems and can be controlled through the Blynk IoT platform. Centralized BMS was optimized for cost, performance and scalability in comparison to all three design approaches Distributed, Centralized and Hybrid. Our testing confirmed reliable communication, fast response and 15-25% reduction in energy consumption. The system minimizes power waste, ensures safety and keeps cost down that supports sustainability goals. In conclusion, the system shows an effective, scalable and ethical engineering solution for smart, sustainable residential environments in Bangladesh and similar urban areas.86 pagesenBRAC University project reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.Building management systemIoTInternet of ThingsEnergy efficiencySmart homeAutomationBuilding management.Project Report