4 W 21St St

Located in Manhattan’s Flatiron district, this 17-story condop was completed in 2005 and blends loft-scale volume with contemporary finishes. The building’s exterior pairs a glass-and-stainless aesthetic with nods to traditional cast-iron and stone loft typologies, creating a distinctive, modern façade. Residence layouts range from one- and two-bedroom homes to larger four-bedroom plans; many units feature lofty ceiling heights, oversized north and/or south-facing windows, and open, eat-in chef’s kitchens with high-end built-ins. Interiors commonly include hardwood flooring, recessed lighting, granite or stone counters, walk-in closets, double vanities, soaking tubs, and in-unit washer/dryers, plus thoughtful storage and pantry space. Common areas emphasize both service and outdoor space: there is a 24-hour doorman/concierge, live-in superintendent, elevator service, a well-equipped fitness center, landscaped courtyard and a substantial roof deck/terrace for residents, along with building storage and on-site garage parking. The property permits pets and offers condo-like rules that allow pied-à-terres, subletting, and flexible ownership arrangements. Situated just off Fifth Avenue near Madison Square Park, the building places residents within easy walking distance of shops, restaurants, transit lines, and cultural hubs across Nomad, Chelsea and Union Square.