Regulations on 'Mechanical Voids' in Luxury Residential Towers Coming Soon to NYC

The city is responding to controversies surrounding building practices that boost heights of luxury residential towers, while leaving big sections of the buildings empty.

1 minute read

January 24, 2019, 5:00 AM PST

By James Brasuell @CasualBrasuell


111 West 57th St

Felix Lipov / Shutterstock

"The de Blasio administration is accelerating plans to tighten a loophole that allows developers to boost the height of luxury apartment buildings," reports Joe Anuta.

"Zoning rules currently allow developers to build mechanical floors with extraordinarily high ceilings, which boosts the height of a building without changing the number of apartments contained within," explains Anuta of the construction techniques that enables the controversial building targeted by the de Blasio administration. "Stacking units on top of a hollow pedestal gives the apartments better views and makes them more expensive."

Anuta raised awareness of the so-called "mechanical voids" and "stilts" at the center of such buildings came in an article from June 2018. "The city initially had said it would regulate mechanical voids by the end of 2018. However, at the behest of City Council officials, the Department of City Planning said last month that it was expanding the scope of the changes to cover more areas of Manhattan, and the more comprehensive set of rules would be ready by the spring," according to Anuta. Now the process of regulating these buildings is expected to change further, as reported in the source article.

Tuesday, January 22, 2019 in Crain's New York Business

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Concrete Brutalism building with slanted walls and light visible through an atrium.

What ‘The Brutalist’ Teaches Us About Modern Cities

How architecture and urban landscapes reflect the trauma and dysfunction of the post-war experience.

February 28, 2025 - Justin Hollander

Complete Street

‘Complete Streets’ Webpage Deleted in Federal Purge

Basic resources and information on building bike lanes and sidewalks, formerly housed on the government’s Complete Streets website, are now gone.

February 27, 2025 - Streetsblog USA

Green electric Volkswagen van against a beach backdrop.

The VW Bus is Back — Now as an Electric Minivan

Volkswagen’s ID. Buzz reimagines its iconic Bus as a fully electric minivan, blending retro design with modern technology, a 231-mile range, and practical versatility to offer a stylish yet functional EV for the future.

March 3, 2025 - ABC 7 Eyewitness News

View of mountains with large shrubs in foreground in Altadena, California.

Healing Through Parks: Altadena’s Path to Recovery After the Eaton Fire

In the wake of the Eaton Fire, Altadena is uniting to restore Loma Alta Park, creating a renewed space for recreation, community gathering, and resilience.

5 hours ago - Pasadena NOw

Aerial view of single-family homes with swimming pools in San Diego, California.

San Diego to Rescind Multi-Unit ADU Rule

The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.

7 hours ago - Axios

Close-up of row of electric cars plugged into chargers at outdoor station.

Electric Vehicles for All? Study Finds Disparities in Access and Incentives

A new UCLA study finds that while California has made progress in electric vehicle adoption, disadvantaged communities remain underserved in EV incentives, ownership, and charging access, requiring targeted policy changes to advance equity.

March 9 - UCLA Luskin Center for Innovation