Question: how much does it cost to build a duplex house in bangalore?
Answer: Duplex House Constructions Cost In Bangalore For a G+1 construction in 20 by 40 Feet Plot, the BUA for a duplex house is 1800 sq. ft. with the construction cost of about 28.8 lacs. Generally, with a sufficient budget, a 3BHK Duplex house can easily be constructed within a G+1 Floor.