Conversions Eliminated Over 100K Housing Units in New York City

Apartment-to-house conversions are contributing to a net loss of housing in some of the city’s historic neighborhoods.

1 minute read

August 28, 2023, 5:00 AM PDT

By Diana Ionescu @aworkoffiction


Colorful historic brownstones in New York City

goodmanphoto / Adobe Stock

According to an article by Rachel Holliday Smith in The City, “over the last 70-plus years, mergers of flats and rooming houses into bigger residences have taken a steady toll on [New York City’s] housing stock, a new study finds.”

The study from historic preservationist Adam Brodheim found that in Manhattan, where conversions have been most aggressive, “each conversion accounted for the loss of between six or seven units on average.” Based on Brodheim’s estimate, the city lost 104,000 housing units to conversions since the 1950s.

“In the past decade, such apartment combinations have nearly erased gains made by the construction of new housing units in the wealthiest parts of the city, particularly in the Upper East and Upper West sides of Manhattan.” The city’s historic districts also experienced a net loss of housing between 2010 and 2022.

The answer, for Brodheim and others, is not to limit conversions, but to make up for them.“Trying to restrict that activity is not necessarily beneficial because there is a demand for it. What this illustrates is that you just have to build a lot more housing.” 

Thursday, August 24, 2023 in The City

An aerial view of Milwaukee’s Third Ward.

Plan to Potentially Remove Downtown Milwaukee’s Interstate Faces Public Scrutiny

The public is weighing in on a suite of options for repairing, replacing, or removing Interstate 794 in downtown Milwaukee.

August 27, 2023 - Milwaukee Journal Sentinel

Portland Bus Lane

‘Forward Together’ Bus System Redesign Rolling Out in Portland

Portland is redesigning its bus system to respond to the changing patterns of the post-pandemic world—with twin goals of increasing ridership and improving equity.

August 30, 2023 - Mass Transit

Conceptual rendering of Rikers Island redevelopment as renewable energy facility

Can New York City Go Green Without Renewable Rikers?

New York City’s bold proposal to close the jail on Rikers Island and replace it with green infrastructure is in jeopardy. Will this compromise the city’s ambitious climate goals?

August 24, 2023 - Mark McNulty

A rendering of the Utah City master planned, mixed-use development.

700-Acre Master-Planned Community Planned in Utah

A massive development plan is taking shape for lakefront property in Vineyard, Utah—on the site of a former U.S. Steel Geneva Works facility.

7 hours ago - Daily Herald

A line of cars wait at the drive-thru window of a starbucks.

More Cities Ponder the End of Drive-Thrus

Drive-thru fast food restaurants might be a staple of American life, but several U.S. cities are actively considering prohibiting the development of new drive-thrus for the benefit of traffic safety, air quality, and congestion.

August 31 - The Denver Post

Air pollution is visible in the air around high-rise buildings in Dhaka, Bangladesh.

Air Pollution World’s Worst Public Health Threat, Report Says

Air pollution is more likely to take years life off the lifespan of the average human than any other external factor, according to a recent report out of the University of Chicago.

August 31 - Phys.org