Welcome to the crown jewel of 20 Putnam Street. This Philadelphia-style duplex lives like a private single-family, with soaring ceilings, luminous interiors, and exclusive access to a beautifully landscaped fenced yard. The main level features open-concept living and dining anchored by a Bosch-appointed kitchen with Fisher & Paykel two-drawer dishwasher, plus two spacious bedrooms and a full guest bath. Upstairs, the entire second floor is devoted to a serene primary suite with walk-in closet, double vanity, and spa-like shower. Below, a private laundry room and versatile bonus space offer room to stretch out. Radiant heated bathroom floors, all-electric systems, one-car tandem parking, and private storage complete the offering. The location near Union Square, the Green Line, and Bow Market puts you close to Somerville's most vibrant restaurants and cafes. With its classic layout, generous scale, and private yard, Unit 1 offers comfort, character, and unbeatable access.