Top Boutique Condos (< 50 Units)

521 Park Avenue was designed by William Boring, an American-born architect who studied architecture at the Ecole des Beaux-Arts before returning to New York and joining the firm of McKim, Mead and White. The limestone building has been honored with numerous international design awards, including a gold medal for architecture from the Exposition Universelle in Paris in 1900.

521 Park Avenue was constructed as a cooperative in 1911, converted to a condominium in 1987, and currently has 24 units. The building has a full-time doorman, a live-in superintendent, a fitness center, and private storage that transfers with each unit. It also benefits from a location near Central Park, world-renowned restaurants, and top shopping. Pets, pied-a-terres, and flexible financing are allowed.

The Urban Glass House at 330 Spring Street stands as Philip Johnson's final major residential development, completed in 2006 just after the legendary architect's death at age 98. Designed in collaboration with Alan Ritchie and taking direct inspiration from Johnson's iconic 1949 Glass House in New Canaan, Connecticut, this 12-story modernist building contains 40 units positioned at the coveted intersection of SoHo, TriBeCa, and the West Village. The building's clean International Style lines and cube-like form with strategic setbacks create a striking presence, while its name proves literal—floor-to-ceiling windows dominate every residence, with the penthouse alone featuring over 70 floor-to-ceiling windows providing 360-degree city and Hudson River views.

Interiors by renowned designer Annabelle Selldorf showcase a sophisticated palette of black, gray, and silver with custom details throughout. Most apartments feature 9'9" ceilings (the penthouse boasts 12' ceilings), distinctive white oak herringbone floors that echo the brick patterns of Johnson's original Glass House, and remote-controlled motorized window shades. The custom Bulthaup kitchens with stainless steel appliances and compressed black linoleum countertops reference modernist design principles, while bathrooms feature luxurious touches like radiant heated floors and deep soaking tubs. Many units offer expansive loft-like entertaining spaces, with some living areas stretching over 40 feet in length, and several apartments include private terraces with Hudson River views.

The crown jewel penthouse spans the entire top floor with 4,266 square feet of interior space plus nearly 1,600 square feet of wraparound terraces on three sides. This five-bedroom residence features a double-sided fireplace, multiple terrace access points, and unobstructed views spanning from the Empire State Building to the Statue of Liberty. The building has attracted notable residents including performance artist Marina Abramović and gained pop culture recognition when apartment 6A was featured as Mafee's residence on the hit series "Billions." Full-service amenities include 24-hour doorman and concierge, a private fitness center, bicycle storage, and cold storage for deliveries, cementing its status as one of Hudson Square's premier luxury condominiums.

Vesta 17, located at 201 West 17th Street, is a 12-story condominium in Chelsea featuring 37 units. Converted from a loft building in 2001, this red-brick building with a rusticated limestone base and a double-height lobby with a glass canopy entrance, is named after the goddess of the hearth.

Residents enjoy a dedicated 24-hour doorman, a beloved full-time resident superintendent, and a porter. Each floor houses no more than four apartments, all equipped with their own washer and dryer, large windows, high-speed Internet access, and bathrooms with limestone floors and rainhead shower spouts.

The building offers attractive retail spaces, though it lacks sidewalk landscaping, a garage, and balconies. It is in close proximity to the Xavier School and benefits from an excellent Chelsea location with great local shopping, numerous restaurants, and good public transportation at 14th Street.

Vesta 17 also provides two fully landscaped, Wi-Fi-enabled roof decks with panoramic city views, multiple lounges, a heated pergola dining section for 12, and a movie screening area. These roof decks can be reserved for private events. Additional amenities include a bike room and a pet-friendly policy. The building is conveniently located near public transportation, the new 20th Street playground, Whole Foods, and Trader Joe’s, with easy access to the West Village, Flatiron, Meatpacking, and the High Line.

Located at 5 East 44th Street between Fifth and Madison Avenues, Number 5 is a distinctive 20-story condominium tower stands as one of Midtown's narrowest "sliver" buildings, designed by Alan Ritchie of The Office of Philip Johnson. Known for its bold and modern façade, the building combines off-white metal panels with striking red and yellow accent columns, making it a lively addition to the mid-block streetscape.

Developed by Sam Suzuki of The Vintage Group and completed in 2009, the building contains 20 apartments, most of which are full-floor residences. Each apartment is thoughtfully designed, with features like high ceilings, Bulthaup kitchens, and Toto fixtures. Floor-through layouts typically include a spacious living/dining area, an open kitchen, and a private gallery leading to the bedrooms. Select units offer private terraces.

The building’s amenities include an attended lobby, central air-conditioning, and a live-in superintendent. its excellent Midtown location provides easy access to the New York Public Library, major clubs, and Grand Central Terminal just a block away.

Historically, the site was once home to Canfield’s Gambling House, one of the Gilded Age's most prestigious establishments until its closure in an anti-vice campaign in 1901. Today, it’s two doors from the Art Deco tower at 535 Fifth Avenue, adjacent to J. Press at 11 East 44th Street, and in the same block as Brooks Brothers, positioning residents close to Midtown’s best shopping, dining, and transport options.

The Spears Building at 525 West 22nd Street was constructed in 1880 as a factory and converted to a boutique condominium in 1996. Building staff and amenities include a part-time doorman, furnished roof deck offering river views, and storage units available for rent. It is in a prime West Chelsea location near the High Line, top restaurants, and world-famous galleries.

Created by Ian Schrager and designed by acclaimed British architect, John Pawson, 50 Gramercy Park North is the perfect combination of storied history and modern luxury. Residential life is exceptional with white-glove hotel-like amenities including a full-time doorman/concierge, onsite parking/valet, lounge, event room, business center, laundry facility, outdoor entertainment spaces, housekeeping service, butler service, personal shopping, pet walking, private storage, access to the Gramercy Park Hotel's David Barton fitness center, room service Danny Meyers renowned trattoria, Maialino and more. It stands in excellent proximity to NoMad and Union Square and all the fine dining, nightlife, shopping and entertainment venues, including New York institutions Gramercy Tavern, Eleven Madison Park and the original Shake Shack, the neighborhoods offer.This desirable co-op building with condo rules welcomes pied-a-terres and investors. 

330 East 72nd Street is an ultra-private boutique condominium with only 12 units. A full-time doorman is on staff, and amenities include a gym and playroom. The Q train is just down the block, and Upper East Side restaurants, shops, health stores, and a playground are close by. Dog or cat allowed.

Blue is located at 105 Norfolk Street and its angular form and dark blue façades strike an imposing figure in the Lower East Side skyline.

105 Norfolk Street’s apartments are spacious and light-filled thanks to floor-to-ceiling windows, many of which provide panoramic views of the nearby East River and the Brooklyn and Manhattan Bridges. Kitchens and master bathrooms are elegant and well-appointed, featuring glass-fronted cabinets and pebbled floors, respectively.

Residents have access to such amenities as a full-time doorman, central air conditioning and heating, a garden, a rooftop terrace, refrigerated storage and a bike room. Many restaurants, shops and bars are nearby. 

The Chelsea Modern at 447 West 18^th Street is a 12-story condominium building located between 9^th and 10^th Avenues in Chelsea.

The Chelsea Modern opened in 2009 and has 47 units, with condominiums featuring individually designed kitchens equipped with islands, breakfast bars, custom cabinetry and high-end appliances. Bathrooms also have specially crafted cabinets, topnotch fixtures and marble counters. Units have maple floors in satin finish, private terraces and balconies and in-residence washers and dryers.

Chelsea Modern amenities include a full-time doorman, a landscaped roof deck, a private outdoor garden and a high end fitness center equipped with a steam room and showers.

The building is located near the High Line elevated walkway and park and the Hudson River and the Chelsea Piers entertainment complex. It is also within walking distance to Greenwich Village.