The Best Condo Buildings in Flatiron

Flatiron's condo stock spans everything from landmark industrial conversions to ground-up glass towers, and the differences between buildings here matter more than in neighborhoods with a more uniform building stock. If you're comparing options, these are the buildings that consistently come up — and what actually distinguishes each one, beyond marketing copy.

One Madison

One Madison, at 23 East 22nd Street, is a 60-story residential tower designed by CetraRuddy, sited at the intersection of Chelsea, NoMad, Gramercy, and Flatiron. Its residences range from generous one-bedrooms to multi-floor five-bedroom homes, all with floor-to-ceiling windows and finishes that include Calacatta marble and Gaggenau appliances. The building carries over 10,000 square feet of amenity space, and its height gives upper-floor residences some of the widest, most unobstructed views available anywhere near Madison Square Park.

10 Madison Square West

10 Madison Square West, at 5 West 24th Street, is a conversion of the historic International Toy Center — originally designed in 1915 by William Van Alen, the architect later responsible for the Chrysler Building. The conversion delivers 125 residences across 22 stories, with wide-plank white oak floors throughout and beamed ceilings soaring past 11 feet in the tower residences on floors 18 through 21. It's the clearest example in the neighborhood of what a historically significant building looks like once it's been reimagined for full-service residential living, and it sits with direct views over Madison Square Park.

Madison Square Park Tower

Madison Square Park Tower brings a more contemporary glass profile to the neighborhood's skyline, with floor-to-ceiling windows throughout and residences designed around unobstructed skyline views. It's a strong option for buyers who want the neighborhood's location without committing to a prewar or conversion floor plan.

The Whitman

The Whitman, situated directly adjacent to Madison Square Park, takes the opposite approach: a boutique building with full-floor residences, private elevator access, and a scale of privacy that larger towers can't offer. It's the right fit for a buyer who wants the neighborhood's best address without the trade-offs of a large building.

How to Choose Between Them

• •Want the widest range of unit sizes and the most amenity space: One Madison
• •Want architectural pedigree and a historic conversion with prewar-scale ceilings: 10 Madison Square West
• •Want contemporary glass construction and unobstructed skyline views: Madison Square Park Tower
• •Want maximum privacy and a boutique, low-density building: The Whitman

For a sense of what these buildings cost relative to the neighborhood average, see What Does $2 Million Buy in Flatiron? — most of the buildings above price meaningfully above that figure for their larger layouts, though smaller units and occasional resales can bring them within reach. And if you're still weighing Flatiron generally against its northern neighbor, Flatiron vs. NoMad: Which Neighborhood Is Right for You? covers that comparison directly.

Building details reflect publicly available information as of publication. Availability and pricing change frequently at this level of the market — for current inventory in any of these buildings, please reach out directly.