The Bangalore Metro Rail Corporation Ltd (BMRCL) has submitted a detailed project report (DPR) for the proposed extension of Namma Metro from Madavara (BIEC) to Tumakuru, advocating for a public-private partnership (PPP) model. The report emphasizes that the project, which includes 16 stations, is financially viable only if an additional 133.71 acres of land is opened for commercial development. The estimated overall project cost ranges from ₹17,785 crore to ₹19,361 crore, depending on the funding structure. The PPP-VGF model, factoring in the land development, yields a private equity internal rate of return (IRR) of 16.27%, making it a potentially attractive option for investors. However, without this land component, attracting private investment may prove difficult. The DPR also discusses alternative funding models and warns that previous PPP metro projects in India have often required government support due to lower-than-expected fare revenues. Ultimately, the report suggests that a combination of PPP and government funding could enhance the project's viability.