Cassa (66 West 45th Street)
66 West 45th Street, New York, NY 10036
BBL 1012607502 · BIN 1034238
- Type
- Condominium
- Units
- About 53
- Pets
- Pets permitted under condominium rules
- Subletting
- Permitted under the condominium declaration
- Pied-à-terre
- Generally allowed in condominiums; not confirmed for this building
- Landmark status
- Not an individual landmark; not in a historic district
- NYC Landmarks Preservation Commission and City Planning records, updated February 2026
- Doorman
- Full-time doorman
Construction chronology: City records carry 2008. A June 2010 operator announcement anticipated an August 2010 hotel opening; that prospective announcement does not establish the actual opening or original certificate-of-occupancy date.
Every recorded sale at this building, 2010–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2026 to date
- $2,005
- 1 sale
- Listing discount
- 0.0%
- Recorded sales
- 23
- On record
- 2010–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at Cassa would likely sell for today, what it costs to sell, and what you’d walk away with — reviewed personally against condition, exposures, renovation quality, and the competition actually on the market.
Cassa at 66 West 45th Street is a mixed-use tower combining a boutique hotel with a small set of condominium residences, on a Midtown block between Fifth and Sixth Avenues. For buyers who want a new-construction condominium with hotel-grade services in the center of Midtown — steps from Bryant Park, Grand Central, Rockefeller Center, and the Fifth Avenue retail corridor — the building offers a specific value proposition that the surrounding prewar office stock does not.
The condominium-and-hotel structure is the building's defining feature. Residents benefit from the service infrastructure of an on-site hotel operation, while owning under a condominium declaration that provides the flexibility trophy and pied-à-terre buyers prize: foreign ownership, investment use, and subletting. That combination — central Midtown location, hotel services, condominium flexibility — defines the building's buyer pool, which skews toward pied-à-terre owners, investors, and buyers who value service over square footage.
The trade-off is the one common to all condo-hotel programs: the building's daily-life experience blends residential and hospitality activity, and the operating and common-charge structure reflects the shared program. Buyers who want a strictly residential building will find Midtown's other options more suitable; buyers who value the service layer find the program a feature.
Architecture and unit composition
City records date the tower to 2008. It is a contemporary Midtown high-rise on a slender footprint, with floor-to-ceiling glazing typical of the era's new construction. The condominium residences sit above the hotel floors within the tower.
With roughly 53 condominium units, the residential component is boutique in scale. Layouts run to efficient one- and two-bedroom configurations suited to pied-à-terre and investor use; in-unit washer/dryers are permitted, a practical amenity in a building of this type. As with any new-construction condominium, buyers should evaluate each unit on its exposure, light, and floor level, all of which drive value within the building.
Building operations
Cassa operates as a condominium within a mixed-use condominium-and-hotel tower. Residents have access to hotel-grade services, and the building's operating structure reflects the shared program. How common charges are allocated between the residential and hotel components, and the building's house rules, are set by the condominium documents; review the financials and declaration during due diligence.
Prospective buyers should review the offering plan and amendments, the most recent condominium financial statements, the budget and reserve picture, and any board minutes during due diligence. In a condo-hotel, the allocation of operating costs and the financial health of the overall program matter to long-term carry; confirm the common-charge and tax picture, the sublet and pied-à-terre terms, and the pet policy in writing before going to contract.
Building staffing and amenities
- Doorman
- Full-time doormanSource: recent listing records
- Concierge
- YesSource: recent listing records
- Elevator
- YesSource: NYC Department of Buildings elevator records
Staffing and amenities as our building profile and recent listing records describe them. A feature not listed is not confirmed absent. Outdoor space, parking and some facilities can belong to particular apartments or to a separate owner; confirm access for the specific apartment.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $54,649/yr
- Per unit / month range
- $0 – $86
- Modeled exposure split equally across 53 units (the residential count on the city's lot record). Not an assessed amount; condominium owners are typically charged by each unit's common-interest percentage.
Source: NYC LL84 benchmarking and PLUTO · The Roebling Research Library. City data last refreshed October 2026.
See full Local Law 97 analysis — emissions history, scenarios, methodology →Facade safety — Local Law 11
The latest available FISP filing classified the facade as Safe — no repairs were required at that inspection. A filed Safe grade is not a guarantee of current condition: owners still maintain the facade and, where required, observe parapets each year. Future inspection timing (Local Law 49 of 2025 changed the cycle framework from October 1, 2026), repair and any assessment decisions remain building-specific.
How to read this, and where it comes from
QEWI = Qualified Exterior Wall Inspector — a licensed professional engineer or registered architect who meets DOB’s FISP qualifications and signs the report (the independent expert, not the managing agent).
Penalties shown are amounts DOB assessed against filings on record across 2015–20 to 2020–25. The FISP dataset does not record whether they were paid, contested or remain open, so treat the figure as history rather than a current balance and confirm the building’s standing with the managing agent.
Source: NYC DOB facade filings (FISP) · The Roebling Research Library. City data last refreshed October 2026.
Recent sales
We compare Cassa sales on a price-per-square-foot basis where reliable and consistently defined interior areas are available, alongside total prices and monthly costs. Within the building, pricing is driven by floor level, exposure and light, and renovation condition; the condo-hotel structure and the building's service program also bear on value and on the buyer pool. Because the residential component is small, individual in-building closings carry significant weight in any pricing analysis.
Buyers and sellers should anchor to recent in-building sales on a per-square-foot basis, adjusted for floor and exposure, and read those against the broader Midtown condominium set. The condo-hotel program means the most relevant comparables are other service-oriented Midtown condominiums rather than purely residential buildings.
Recent closings at this building, from The Roebling Research Library. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Apr 29, 2026 | U | 584 sf | $1,170,987 | $2,005/sf | — |
| Nov 24, 2025 | 31CSponsor Sale | 2 BR · 1 BA · 558 sf | $1,100,000 | $1,971/sf | +0.0% |
| Nov 21, 2025 | U | 584 sf | $1,170,987 | $2,005/sf | — |
| Apr 18, 2022 | U39C | 1 BR · 1 BA · 661 sf | $799,000 | $1,209/sf | -36.1% |
| Jul 30, 2018 | 28C | 1 BR · 584 sf | $1,125,000 | $1,926/sf | -4.3% |
| Mar 3, 2015 | U | 584 sf | $900,000 | $1,541/sf | — |
| Jan 28, 2014 | 29D | 1 BR · 1 BA · 661 sf | $1,280,000 | $1,936/sf | +6.7% |
| Jan 3, 2013 | U39CSponsor Sale | 1 BR · 1 BA · 603 sf | $1,306,414 | $2,167/sf | — |
Market read. Most recent trades (2026 to date) cleared a median $2,005/sf (recorded) across 1 sale. Median listing discount 0.0% from the last ask.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01260-7502; each condominium apartment is its own tax lot). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage from recorded condo declarations and offering plans.
Closed rents at Cassa, last 36 months
| Size | Leases | Median / month |
|---|---|---|
| 1 bedroom | 6 | $5,575 |
8 closed leases, October 2023 to September 2026. Most recent lease June 2025. Sizes with fewer than 2 leases are not shown. Compiled by The Roebling Team at Compass from closed leases.
What would your apartment rent for?
The figures above are the building's closed leases. Enter your apartment and I'll send you what yours would rent for, from comparable leases at Cassa and nearby.
At the recent median sale of $1.17M (3 sales in the past 24 months, since October 31, 2024), a buyer putting 25% down would pay about $52,042 to close, or 4.4% of the price.
- Mansion tax: $11,710
- Mortgage recording tax: $16,906
- Title insurance: $5,269
- Attorneys, lender, building fees, reserves and filings: $18,157
Assumes a resale (the seller pays transfer taxes), a $4,500 attorney fee and a mortgage on the rest.
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What to know if you’re buying
Understand the condo-hotel program. Cassa's residences sit within a mixed-use condominium-and-hotel tower. If you want a strictly residential building, this is not it; if you value hotel-grade services and condominium flexibility in central Midtown, the program is the point.
Confirm the cost allocation. In a condo-hotel, how operating costs and common charges are allocated between the residential and hotel components affects your carry. Review the financials and the declaration.
Condo flexibility is real. Expect 30–45 day closings, foreign-buyer acceptance, and pied-à-terre, investment, and sublet use permitted under the declaration — confirm the current terms.
Model the full carry. Common charges, property taxes, and any program-specific assessments should all be in your underwriting before you make an offer.
What to know if you’re selling
Market to the right buyer pool. Cassa's natural buyers are pied-à-terre owners, investors, and service-oriented Midtown buyers — the marketing should speak to flexibility, services, and location.
In-building comps anchor pricing. With a small residential component, recent in-building per-square-foot closings, adjusted for floor and exposure, are the most reliable pricing evidence.
Closing estimate. Thirty to forty-five days from contract to closing is typical; time-sensitive buyers should confirm the schedule for their transaction.
Comparable buildings
If you're considering Cassa, also evaluate:
- 175 Fifth Avenue — the landmark Flatiron Building condominium conversion
- 45 East 22nd Street — a full-amenity Flatiron condominium tower
- 21 East 26th Street — a Madison Square-facing condominium
- 23 East 22nd Street — a Madison Square Park condominium
- 15 Union Square West — a landmark condominium conversion at Union Square
How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
Considering a move at Cassa?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.
646.939.7375 · c.cohen@compass.com