At 50 West 66th Street, the Floor Number Sets the Price

Seen from Central Park West, 50 West 66th Street has three parts. At the bottom is a limestone and bronze base that steps back above the second floor. Higher up is a carved shared terrace at the 16th floor, and above that a slimmer tower with corner loggias, described in Snøhetta's project notes. The building's recorded sales follow the same three parts. In 2026 a group of closings sits low, another sits high, and nothing sits in between.

Two sales six weeks apart show the gap. Unit 3A, a two-bedroom of about 2,519 square feet, closed on July 16, 2026 for $5,618,375, or $2,230 per square foot. Unit 41W, a three-bedroom of about 2,816 square feet, closed on August 28, 2026 for $17,067,107, or $6,060 per square foot. Both are in the same building, have similar floor areas and closed in the same summer, yet the price per foot differs almost threefold.

For a buyer or seller in Lincoln Square, a citywide trend doesn't explain that gap. It comes from a zoning rule, and the rule's effect shows up as two separate markets in one building.

Two Price Lists Under One Roof

The building recorded 19 closings between January and late August 2026. Eleven were on floors 3 through 11, ranging from $2,230 to $3,432 per square foot. The other eight were on floors 40 through 56, ranging from $5,256 to $7,439 per square foot. The two ranges never overlap. The cheapest tower sale in 2026 cost about 50 percent more per foot than the most expensive lower-floor sale.

Comparing apartments with the same bedroom count makes the point clearer.

The two four-bedrooms closed five days apart. Unit 40N has about 5 percent more floor area and sold for roughly $15 million more. Unit 8F is slightly larger than 41W and sold for about half the price. Ceiling height accounts for part of the difference. The developer markets two collections, House on the lower floors with ceilings up to 12'8" and Tower above with ceilings of 14'6". Most of the gap, though, comes from how high above the street each apartment begins.

A Zoning Rule, Expressed in Dollars

The building's shape comes from the zoning envelope. In a 2022 interview with iLovetheUpperWestSide, Sean Khorsandi of Landmark West explained that the developer had to keep 60 percent of the floor area below 150 feet. The remaining 40 percent "starts again after a gap, once it clears the roof of the tallest neighbor, which is 10 West 66th Street."

Floor area had to stay low, and height above that was largely unrestricted. Under those conditions, the lower homes ended up competing with the surrounding blocks, while the upper homes started above the nearby rooftops. The developer describes the upper 22 floors as raised more than 200 feet by the building's engineering. The price tiers in the closing record match that physical split.

The gap was the subject of a long legal fight.

1. In January 2019, the Department of Buildings found that the original 160-foot mechanical void violated zoning and raised concerns about emergency stair access, as the West Side Spirit reported.
2. Extell's amended plans divided that space into two 64-foot mechanical floors and one 48-foot floor, with elevator stops added for emergency access, according to The Real Deal.
3. Landmark West appealed to the Board of Standards and Appeals, and the City Club of New York filed its own lawsuit. A 2–2 tie at the Board allowed the project to proceed, as Gothamist reported.
4. In September 2020, Justice Arthur Engoron voided the city's permit, finding that the mechanical space was being used improperly to add height.
5. The Appellate Division reversed that ruling in 2021 and restored Extell's right to build, according to The Real Deal's December 2021 coverage.
6. Landmark West's separate challenge failed in May 2022, and iLovetheUpperWestSide's account says the tower went ahead at 775 feet.

New York YIMBY describes the finished building as 69 stories and 127 condominium units, on an interior lot between Columbus Avenue and Central Park West with frontage on both West 65th and West 66th Streets. It is now the tallest structure on the Upper West Side, a title that previously belonged to 200 Amsterdam Avenue.

A Configuration the Rules No Longer Allow

According to Khorsandi, the city responded to buildings like this one by capping mechanical spaces at 25 feet before they count against floor area, and such spaces can repeat only every 75 feet. The tower floors at 50 West 66th Street sit where they do because of rules in force at the time, and the city has since changed those rules.

That matters for what an apartment here will be compared against when it resells. Each tier competes with a different group of buildings.

Which Comparables Each Tier Actually Faces

The House floors price like the newer towers along Riverside Boulevard and the western edge of Lincoln Square. Recent recorded resales there:

• One Riverside Park, 10L: $6.55 million, or $2,313 per square foot, closed July 6, 2026.
• 1 West End Avenue, 32A: $7.55 million, or $2,472 per square foot, closed June 11, 2026.
• Two Waterline Square, 33D: $3.9 million, or $2,615 per square foot, closed July 13, 2026.

Those figures fall inside the House range at 50 West 66th Street, which ran from $2,230 to $3,432 per square foot in 2026. A buyer considering a lower-floor unit near Central Park West is really choosing between a park-side address with House ceilings and a higher floor with river views a few avenues west, at similar prices per foot.

200 Amsterdam Avenue falls between the two tiers. Unit 40A there closed on September 15, 2026 at $12.04 million, or $4,495 per square foot. That is well above the House range at 50 West 66th Street and well below its Tower range. In the same building, unit 21A closed on October 1, 2026 for $4.1 million, according to the deed recorded in ACRIS. The seller had listed it at $5.25 million in 2024, and the sale came 22 percent below that ask after 937 days on the market. The same apartment had last sold in March 2022 for $4.58 million. As of October 20, 2026, the building's sponsor inventory was reported 97 percent sold, with a full-floor unit on the 48th floor asking $17.95 million. In that building too, the floor number goes a long way toward setting the price.

The Tower floors at 50 West 66th Street have one close match among nearby resales. Unit 12C at 15 Central Park West closed for $25.13 million, or $7,508 per square foot, on March 26, 2026. That sale is now seven months old, so it shows where the top of the market stood in early spring rather than what it is today. Among nearby condominiums with 2026 resales, it is the only one priced above the highest 2026 Tower closing at 50 West 66th Street, which was $7,439 per square foot.

What the Neighborhood Average Absorbs

CityRealty's market data, published October 6, 2026, put the Upper West Side condo average at $1,852 per square foot so far in 2026, up 3.5 percent and the strongest gain of any Manhattan submarket. It credited part of the increase to closings at The Henry and 50 West 66th Street.

That increase mostly reflects which apartments sold. When eight tower closings between $5,256 and $7,439 per square foot enter the same pool as Riverside Boulevard resales in the $2,300s, the average goes up even if no individual apartment gained value. A seller on West End Avenue who reads "up 3.5 percent" is reading a number pushed up by sales in a building priced on height.

A seller of a lower-floor unit at 50 West 66th Street who prices off the building average is pricing against the Tower floors, and the 2026 record shows no lower-floor sale anywhere near them. A buyer who sees a high average for the neighborhood may assume the area is uniformly expensive, when the House floors closed at prices close to those a few avenues west.

A Few Direct Questions

How much of 50 West 66th Street is sold? The Real Deal reported in June 2026 that the 127-unit tower was over 80 percent sold, citing Marketproof. Closings have continued since then, so that figure describes June.

Are the amenities shared across both collections? The developer describes more than 50,000 square feet of amenities on three levels, including indoor and outdoor saltwater pools, a full-size basketball court and a landscaped Sky Level terrace. YIMBY places the outdoor pool, sundeck and bar on the 20th floor. That puts them physically within the gap between the two collections.

Which comparables apply to a lower-floor unit here? Based on the 2026 record, the nearest price matches are recent resales at One Riverside Park, 1 West End Avenue and Two Waterline Square, along with other House-floor sales in the building. Tower closings are the wrong benchmark.

Resales at 50 West 66th Street will be priced according to which tier the unit is in, and each tier has its own set of comparables. If you own in the building or are weighing a unit on either side of the gap, Carol can help you identify the closings that actually match your apartment and price from those. Work With Carol at Carol Staab.