Penthouse E, a duplex residence spanning the top two floors of The Chatsworth, is on the market for $21.95 million, offering 6,000 square feet of indoor space and an additional 3,700 square feet of private rooftop terrace according to Robb Report. The expansive Upper West Side offering, located in a historic building, commands a premium price in 2026. Buyers seeking a unique luxury apartment sale are drawn to its scale and exclusive features. The particular duplex penthouse is a significant opportunity in the city's high-end real estate.
However, this nearly $22 million historic Upper West Side penthouse listing exists alongside 29 other apartment buildings for sale in the same neighborhood, according to LoopNet. The disparity shows a tension between concentrated ultra-luxury demand and broader market inventory.
Based on these high-value transactions and available inventory, the Upper West Side's luxury market appears to be bifurcated. Unique trophy properties continue to command premium prices, while the wider market might offer more options for buyers.
Inside the Chatsworth's Opulent Duplex
- The property features five en suite bedrooms. The primary suite includes dual marble bathrooms and multiple walk-in closets, according to Robb Report. High-end amenities show bespoke luxury designed for an ultra-wealthy buyer, aligning with the property's aspirational price.
UWS Ultra-Luxury Market Continues to Soar
A mansion at 48-50 West 69th Street recently entered contract with an $85 million asking price, according to Robb Report. The significantly higher-value transaction reinforces the Upper West Side's enduring appeal for unique, multi-million dollar properties. The transaction signals robust demand for exceptional assets within this exclusive segment.
The UWS ultra-luxury segment is characterized by a persistent, deep-pocketed buyer pool willing to pay top dollar for unparalleled exclusivity. The segment's characteristics effectively insulate this niche from general market fluctuations.










