579 Decatur Street is a restored 19th-century brownstone townhouse offering three free-market, two-bedroom residences in Stuyvesant Heights, Brooklyn. The first-floor unit is a duplex with a private backyard, and all three homes pair historic character with modern, renovated interiors. Operating Performance Based on the current underwriting, the property is projected to generate $113,403 of Net Operating Income (NOI), increasing to $135,895 on a pro forma basis through market rent growth. At the $2.10 million listing price, the investment reflects a 5.4% current capitalization rate, improving to 6.5% pro forma, while cash-on-cash returns are projected to increase from 5.4% to 6.5%. The underwriting supports a compelling value-add opportunity with meaningful income growth and limited operational complexity. For investors, 579 Decatur Street presents the opportunity to acquire a fully free-market multifamily asset in a high-demand Brooklyn submarket. The combination of stable residential income, limited operating complexity, and continued strength in the local rental market positions the property as an attractive long-term investment capable of delivering reliable income and future value appreciation.