The cost to build a duplex house in Bangalore depends on various factors, including design, materials, and labor charges. On average, the house construction cost in Bangalore ranges between ₹1,800 to ₹2,800 per square foot. Premium materials and high-end finishes may increase the budget, while cost-effective planning can help reduce expenses. Factors like plot size, flooring, and interior design also impact the total cost. Hiring experienced contractors ensures quality construction and efficient budget management. Proper planning and the right choice of materials can help build a durable, stylish duplex home while keeping expenses under control.