425 Park Ave S

A 20-story prewar co-op constructed in 1927, this boutique conversion contains just 24 loft-like residences, predominantly one- and two-bedroom layouts. The building’s art-deco era bones are expressed through generous 11-foot beamed ceilings, oversized sash and industrial-style windows, and occasional original details such as wood-burning fireplaces in a handful of apartments. Interiors emphasize open-plan living with formal dining areas, eat-in kitchens, entrance foyers, high ceilings and walk-in closets; many units show modern renovations including chef-caliber kitchens and spa-like baths while retaining prewar scale. Shared resources are intimate and practical: a planted and furnished roof deck with skyline views, storage rooms on each floor, and complimentary laundry facilities. Staffing is traditional for a smaller co-op — a part-time or limited-hours doorman, live-in superintendent, and building-managed services. The property permits pets (often case-by-case) and accommodates pied-a-terre and subletting policies with board approval subject to published timelines and conditions. Situated on Park Avenue South in NoMad/Flatiron, the building sits steps from Madison Square Park, diverse dining, and transit lines, offering a blend of historic loft character and modern urban conveniences.