As the tech companies Uber, Airbnb, Lyft and Pinterest prepare to go public, thousands more instant millionaires are expected to flood the market in San Francisco and Silicon Valley. All the while, the middle class and working poor are scrambling for shelter. — The Guardian

The high-end condo building at 520 W. 28th St. along the High Line that the company completed roughly two years ago appears so far to be a rare bust.

According to property records, only 16 of the building's 39 units have sold, a roughly 40% sell through that shrinks to an even smaller percentage when measured by square footage. That's because the building's largest and most expensive apartments, including its three penthouse units, all remain unsold. — Crain's New York Business

New details and renderings have been released for 35 Hudson Yards, set to be the tallest residential tower in the Hudson Yards neighborhood at over 1,000 feet. The boutique apartments come with a wide array of in-house lifestyle services, some provided by the Equinox Hotel, which is part of the development. David Childs and Skidmore Owings & Merrill are the architects, while interior design is being led by Tony Ingrao. — New York YIMBY

On March 15, after 12 years of planning and six of construction, the Related Companies will open the gates to its new $25 billion enclave [...] Besides being big, Hudson Yards represents something fundamentally new to New York. It’s a one-shot, supersized virtual city-state, plugged into a global metropolis but crafted to the specifications of a single boss: Related’s chairman, Stephen Ross — NY Magazine

A state lawmaker is gunning for more aggressive restrictions on the vast mechanical voids developers often abuse to boost their buildings’ heights as a “more robust” solution to the de Blasio administration’s recent zoning amendment. [...]

Current zoning exempts mechanical voids from a building’s floor-area ratio (FAR)—a given property’s square footage—and puts no height limits on those spaces. — Curbed NY

Any visitor to New York over the past few years will have witnessed this curious new breed of pencil-thin tower. Poking up above the Manhattan skyline like etiolated beanpoles, they seem to defy the laws of both gravity and commercial sense. They stand like naked elevator shafts awaiting their floors, raw extrusions of capital piled up until it hits the clouds. — The Guardian

Hedge funder Ken Griffin has closed on a massive penthouse at 220 Central Park South, paying a record-shattering $238 million, according to sources familiar with the deal.

The Citadel founder has long been rumored as the buyer of the condominium’s most lavish spread — a 23,000-square-foot quadplex encompassing the 50th through 53rd floors of the limestone tower, developed by Vornado Realty Trust and designed by Robert A.M. Stern. The asking price was $250 million. — The Real Deal

As Art Basel kicks off this week in Miami the city has a new listing to boast about that comes with everything you would expect for the highest-priced penthouse in the area right now: a celebrity architect, more square footage than its competitors, ocean views that go on forever and, of course, an unusual luxury amenity... — Forbes

A new report by real estate agency Knight Frank finds that 153 properties in six cities’ “ultra-prime” category sold for a combined total of $6.6 billion in the last year, or an average of $43 million per house.

Hong Kong led the world in sales over $25 million, followed by New York, then London. — Bloomberg

The limestone clad mansion in Bel Air owned by the late TV executive Jerry Perenchio just got a price cut.

But at $245 million, the commanding French neoclassical residence, which measures 25,000 square feet, is still the most expensive listing on the open market in the U.S.

The property, which came up for sale last year for a staggering $350 million, has long been the cream of the crop among high-end estates. — Curbed LA

Rafael Viñoly is best known for designing 432 Park, the tallest residential building in the Western Hemisphere, but he makes time for private homes, too–at least when they have headline-making features like a bullet-proof glass facade. His firm was first tapped to design this Upper East Side townhouse by Argentinian billionaire Eduardo Eurnekian to serve as his home and U.S. headquarters, but it looks like he instead decided to list the finished product for $50 million. — 6sqft

Perhaps it’s not a surprise in a city where residential prices can reach into the stratosphere, but in Los Angeles, more than 17 percent of all homes are valued at over $1 million.

What may be more shocking is that L.A. doesn’t have the highest share of million-dollar homes. [...]

San Jose and San Francisco were No. 1 and No. 2, respectively. In San Jose, homes valued over $1 million made up 53 percent of the market. San Francisco’s million-dollar-share was at 40 percent. — The Real Deal

The construction of this and other so-called giga-mansions underscores a new gilded age in the United States and especially in LA. [...]

The splurge comes amid a housing shortage that has fuelled a homelessness crisis, with 57,000 people without permanent shelter in LA county [...]. The Los Angeles Times columnist Steve Lopez compared the city’s hilltop mansions to giant tombstones marking the death of humility. — The Guardian

It will be built from the top down on a suspension bridge, modelled after and painted the colour of the Golden Gate bridge. At its base will be a new 1,075-seat theatre, and below that an excavation site that’s 4.5 times as large as the museum’s excavation. It is expected to cost over $300m. — The Guardian