21 Butler Pl

A compact four-story pre‑war cooperative constructed in 1915, the building typifies low-rise Brooklyn residential architecture with a well-preserved historic lobby and traditional prewar detailing. Units are primarily one-bedroom apartments featuring high ceilings, hardwood or parquet floors, moldings, and occasional exposed brick; layouts include separate formal dining rooms or convertible dining/bed spaces and some windowed eat-in kitchens. Common areas are modest but thoughtfully maintained — an entry foyer with period mantles and marble finishes, an interior courtyard, and a landscaped roof deck that offers skyline views. Resident services and conveniences include an on-site live‑in superintendent, a central laundry room, bicycle parking, basement storage and rentable private storage cages. The property operates as a pet‑friendly co-op with standard board requirements (including minimum down payment options noted in listings) and periodic assessments for reserve work. Located on a quiet, tree‑lined block steps from Grand Army Plaza, the building sits within walking distance of Prospect Park, the Brooklyn Museum, Brooklyn Botanic Garden, Farmers Market and multiple subway lines, positioning it as a low-density, community-oriented residence in a cultural and transit-rich neighborhood.