Casoni — Midtown’s Champagne-Glass Tower

Section 01Why Casoni — And How It Compares to the Competition

Midtown Manhattan is not short on new development. The Spiral, One Vanderbilt, PENN 2, and the towers along the Hudson Yards corridor have all redefined what’s possible in the district. But Casoni occupies a different lane entirely. It’s not a supertall competing for the tallest title — it’s a 785-foot, 70-story cylindrical residential tower that prioritizes form, livability, and a distinctive silhouette over sheer height.

Developer conviction. Casoni is the work of Sioni Group, led by brothers Jack and Ray Yadidi — a three-generation family development firm. They partnered with AB & Sons and assembled a formidable design team: C3D Architecture (led by Damir Sehic, AIA) for the exterior, McNamara Salvia for structural engineering, Motioneering for wind performance, and a European facade fabricator for the building’s signature champagne-colored glass curtain wall. The result is over 300,000 square feet of high-performance glass — the only cylindrical residential curtain wall of its kind in Manhattan.

Scale without sprawl. At 311 residences, Casoni is the largest new ground-up residential building in the Midtown–Bryant Park area. Yet the mix of 284 rental apartments (floors 1–23) and 27 for-sale condominiums (upper floors through 70) creates two distinct living experiences within the same tower — a hybrid model that competitors like Manhattan View at MiMA or The Eugene don’t offer with the same architectural ambition.

The facade. Casoni’s champagne-colored glass is not just aesthetic — it’s engineered. The curtain wall uses bird-friendly reflective glass, precision aluminum paneling, and a first-of-its-kind concealed mechanical louver system that preserves the seamless exterior while handling ventilation. Linear lighting fixtures with daylight sensors animate the tower from sunrise to nightfall. No other residential building in Midtown has this level of facade engineering.

The podium. Rather than planting a glass box on a sidewalk, C3D Architecture designed a nine-story sculptural entrance podium with organic curves and subtle nods to the neighboring Gotham Hall (the landmarked 1922 former Greenwich Savings Bank). The podium’s neoclassical-meets-modern design creates a visual dialogue with the surrounding streetscape that the flat-faced towers nearby simply can’t match.

CityRealty lists Casoni as a full-time doorman condominium with a target sales date of Q1 2026 and planned delivery in Q4 2026. For buyers exploring the broader landscape of new construction, our guide to purchasing new development in NYC covers sponsor negotiations, timeline expectations, and what to watch for in an offering plan.

Section 02The Residences — Tailored Living at Every Level

Casoni offers 311 residences spanning studios to three-bedroom layouts, with an average unit size of approximately 991 square feet. The building is structured in two tiers: rental apartments up to the 23rd floor, and for-sale condominiums from the upper floors through the 70th. The crown of the building features several full-floor and half-floor residences with panoramic Manhattan views.

Every residence features floor-to-ceiling windows that take full advantage of the tower’s curved form, delivering river-to-river panoramas and direct sightlines to the Empire State Building, Hudson River, and downtown Manhattan. The interiors are designed with custom stonework and elegant millwork, complemented by integrated smart-home technology throughout.

The upper-floor condominiums benefit from the building’s distinctive curved balconies that wrap the northeast corner — a design choice that improves both airflow and the sense of outdoor space. These balconies, combined with the setback terraces on the 23rd, 58th, and 70th floors, give the tower a layered, sculpted appearance that evolves as you look up.

The minimum down payment is 20%, and pets are allowed — both standard for a Manhattan condo but worth confirming for buyers coming from co-op-heavy neighborhoods. For a complete overview of what to expect financially, our ultimate buyer’s guide to NYC real estate breaks down the process step by step.

Section 03Amenities — 25,000 Square Feet of Wellness and Social Space

Casoni’s amenity program spans over 25,000 square feet across two full floors — a significant commitment for a building of this size. The focus is on wellness, work, and social life, with spaces that feel intentional rather than obligatory.

The headline amenities include an indoor/outdoor pool, a full spa lounge, and a state-of-the-art gymnasium. For families, there’s a dedicated children’s playroom. For professionals, co-working spaces provide a polished work-from-home alternative without the commute. And for entertaining, Casoni includes a speakeasy-inspired recreational area and a dedicated event space — a nice touch that many new developments overlook.

The outdoor spaces are where Casoni really distinguishes itself. Three landscaped terraces — on the 23rd, 58th, and 70th floors — give residents access to open-air views at multiple elevations. The rooftop terrace at the 70th floor offers what may be one of the most dramatic vantage points in Midtown, with unobstructed sightlines in every direction.

Ground-level services include an attended lobby with full-time doorman, bike room, laundry facilities, central air conditioning, and elevators.

Casoni’s split between 284 rental units and 27 condominiums is an unusual model that benefits condo buyers in particular. The rental floors generate consistent building revenue, which can keep common charges more predictable. Meanwhile, the condo floors — concentrated in the upper half of the tower — enjoy the best views and the most exclusive amenity access. It’s a structure worth understanding before you compare it to all-condo buildings.

Section 04The Location — Midtown’s Best-Connected Corner

Casoni sits at 989 Sixth Avenue, on the southwest corner of Sixth Avenue and West 37th Street — in the heart of what’s now called Midtown South. The location is exceptional for one reason above all: connectivity. This is one of the most transit-rich intersections in Manhattan.

Bryant Park is a two-minute walk. The B, D, F, M trains at 34th Street–Herald Square and the N, Q, R, W at Times Square are all within a few blocks. The 1, 2, 3 and A, C, E lines are close behind. Penn Station is a ten-minute walk, and Grand Central is reachable in under fifteen minutes on foot. For commuters and frequent travelers, this may be the single most efficient residential address in Manhattan.

The surrounding neighborhood is in the middle of a transformation. The Midtown South rezoning — approved alongside Casoni’s construction — is reshaping the former Garment District into a mixed-use corridor of new residential towers, boutique hotels, and ground-floor retail. The proximity to Gotham Hall, Macy’s Herald Square, and the restaurant scene along Fifth Avenue and Korea Town gives the neighborhood a density of options that the far West Side and Hudson Yards still lack.

For buyers who value neighborhood character alongside luxury, it’s worth comparing different Manhattan corridors. Our definitive guide to living on the Upper East Side offers perspective on a very different Manhattan lifestyle — quieter, more residential, but with its own compelling logic.

Section 05Market Data & Pricing

Casoni’s sales are launching in Q1 2026, with delivery expected in Q4 2026. Because the building is pre-delivery, we don’t yet have closed-sale comparables. Here’s what we know about the project’s positioning:

The total building encompasses approximately 384,118 square feet, including 86,817 square feet of commercial space. The for-sale condominiums are concentrated on the upper floors, which command the best views and the highest price points. Pricing details will become available as the sales office opens, but the building’s positioning — Midtown South, new construction, full-service, tower-crown condos — places it squarely in the $1,500–$2,200 per square foot range based on comparable new developments in the corridor.

For context on the full cost of purchasing a condo in New York, our breakdown of NYC buyer closing costs covers everything from mansion tax to sponsor closing cost credits — which are particularly relevant in a new development context.

Section 06Who Is Casoni For?

Casoni is targeting a buyer profile that’s distinct from the Billionaires’ Row crowd and the Downtown loft seeker. The typical Casoni buyer values:

• Connectivity above all — they want to be at the center of Manhattan’s transit network, not on the periphery. Work, dining, culture, and travel are all within a short walk or train ride.
• Design with engineering substance — the curved glass curtain wall, concealed louver system, and bird-friendly facade aren’t marketing features. They’re real innovations that affect daily life and long-term building performance.
• Views as a non-negotiable — upper-floor condos at Casoni deliver Empire State Building views, river-to-river panoramas, and the kind of dramatic skyline framing that only a cylindrical tower can offer.
• Amenity breadth — 25,000+ square feet across two floors means you don’t have to choose between a pool, a co-working space, and a gym. You get all of it.
• New construction simplicity — no co-op board, no renovation timeline, no aging infrastructure. Move in and start living.

If you’re considering selling a current property to move into a new development like Casoni, the timing and strategy matter. Our guide on selling a luxury apartment in NYC covers how to position your sale to align with a new-development purchase timeline.

Section 07The Bottom Line

Casoni is a bet on a particular vision of Midtown living: that you can have a building with genuine architectural ambition, serious amenity programming, and panoramic views — without relocating to the far West Side or paying Billionaires’ Row premiums. The Sioni Group and C3D Architecture have delivered a tower that is visually unlike anything else in the neighborhood, and the engineering behind the facade backs up the aesthetics.

The hybrid rental-condo structure is unusual and worth understanding before you commit. But for the right buyer — someone who wants an upper-floor condo with Empire State Building views, 25,000 square feet of amenities below, and a ten-minute walk to Penn Station — Casoni is going to be very hard to beat when deliveries begin later this year.

This is a building I’ll be watching closely as sales launch. If you’re interested in exploring it, reach out early — the 27 condo units will not last long once pricing is released.

QuestionsFrequently Asked Questions

Where is Casoni located?

Casoni is at 989 Sixth Avenue (also known as 100 West 37th Street), on the southwest corner of Sixth Avenue and West 37th Street in Midtown South, Manhattan. It’s a two-minute walk from Bryant Park and within blocks of multiple subway lines.

Who developed and designed Casoni?

Casoni was developed by Sioni Group (Jack and Ray Yadidi) in partnership with AB & Sons. The building was designed by C3D Architecture (Damir Sehic, AIA), with structural engineering by McNamara Salvia, wind engineering by Motioneering, and a European-fabricated glass curtain wall. Marketing is handled by REAL New York.

How many units does Casoni have?

Casoni contains 311 total residences: approximately 284 rental apartments on floors 1 through 23, and 27 for-sale condominiums on the upper floors through the 70th story. Units range from studios to three-bedroom layouts, with several full-floor and half-floor residences at the tower crown.

What amenities does Casoni offer?

Over 25,000 square feet of amenities across two floors, including an indoor/outdoor pool, spa lounge, gymnasium, co-working spaces, children’s playroom, speakeasy-style recreation area, and event space. Outdoor landscaped terraces on the 23rd, 58th, and 70th floors provide open-air gathering spaces with panoramic views. The building also features a full-time doorman and attended lobby.

When will Casoni be ready?

The building topped out in mid-2025 and facade installation is underway. Sales and leasing are launching in Q1 2026, with planned delivery in Q4 2026. The exterior was progressing ahead of schedule as of early 2026.