Welcome to 3139 N 21st St, a strong income-producing property that checks the boxes for investors looking for immediate returns. This turnkey duplex is already generating $2,000 per month, giving buyers the opportunity to step into a property that meets the 1 Percentage Rule from day one. Even better, the building is occupied by excellent tenants who take pride in their homes and provide the kind of stability every investor hopes for. Whether you’re looking to grow your portfolio or secure a reliable Milwaukee cash-flow asset, this property offers the ideal blend of steady income, solid tenancy, and minimal upfront work.