故事

We Recycle Bottles. Why Don’t We Recycle Buildings?

To confront climate change, we need to make the most of the buildings we already have.

By all appearances, American cities are becoming greener than ever before. Sustainable design has gone mainstream, LEED-certified buildings are commonplace, and redeveloped downtown districts — complete with new bike lanes, buses, and light rail — make a low-carbon lifestyle ever-more attractive. But is all of this really enough to fight climate change?

In the architecture industry and in the media, most of the attention goes to new buildings, often designed to meet high environmental performance standards. At the same time, some of our greenest buildings may be hidden in plain sight: they’re the ones we already have.

A building can only be considered truly sustainable if it remains in use for long enough to justify the resources invested in its creation.

Adaptive reuse — the practice of renovating and adapting existing buildings to serve new and future needs — must become an essential part of any city’s strategy for sustainable urban development. As an alternative to new construction, adaptive reuse has less environmental impact at nearly every level. It bypasses the cost of demolition and construction, all while extending the lifespan of our existing resources.

In many cases, reusing a building is not only the most sustainable development solution, but also the most cost-effective. And with a sensitive design approach, we can renew historic resources to create lasting civic and cultural value.

An alternative to demolition

The crisis of climate change makes it imperative to consider the environmental consequences of demolition. A vast amount of energy goes into a building’s creation, from extracting and processing raw materials required for construction, to hauling and disposing waste from the job site. This is known as the building’s “embodied energy.” Demolishing a building wastes this initial investment. On top of this, add the physical waste of demolition: When a typical 50,000-square-foot commercial building is torn down, about 4,000 tons of material are destined for disposal.
A building can only be considered truly sustainable if it remains in use for long enough to justify the resources invested in its creation. Given the overwhelmingly vast building stock that already exists, simply encouraging the construction of new, energy-efficient buildings falls short of a holistic, sustainable approach to development. Adaptive reuse is an essential ingredient.

The economic case for adaptive reuse

Climate change has made adaptive reuse more relevant than ever before. But it’s also a compelling business proposition. The federal government has incentivized strategies to create sustainable and economically valuable alternatives to new construction. In 1976, amid the unrelenting demolition of historic buildings in city centers, the Tax Reform Act established substantial federal tax incentives for preservation and reuse. It reversed the former tax bias in favor of demolition and building anew — making the sustainable option significantly more financially attractive.

In the years since, adaptive reuse and real estate development have become practically inseparable. Building reuse allows for the development of higher density urban areas, while preserving historic resources that can boost tourism, business development, and property values. Few other development strategies produce as much economic activity over a longer period, and in a wider range of the economy, for so little initial investment.

Before
The historic Strand Theater in San Francisco.
ACT Strand Theatre
After its renovation as a contemporary performance venue.

Restoring a theater, reviving a neighborhood

Since reopening in 2015, the theater has become a cultural destination in San Francisco — bringing new life to the street and contributing to the revitalization of its neighborhood.

ACT The Strand Theatre
The Strand, American Conservatory Theater (A.C.T.)
Storefront

Back to the future: Moynihan Train Hall

Farley Post Office Building
The Farley Post Office building, photographed shortly after its completion.

Today, the 1.4-million-square-foot building is being dramatically adapted to modernize and expand Penn Station and its transit infrastructure. The new facility, named Moynihan Train Hall, will transform a massive and obsolete building into a model of sustainable, urban mixed-use development.

Moynihan
Passengers can now enter Penn Station through new entrances at the Farley Building.

SOM’s design exposes and restores many of the building’s historic features and provides New Yorkers once again with a grand gateway to the city — even evoking the vaulted concourse of the original Penn Station. At the center of the building, a former mail sorting room and loading dock will be entirely transformed into over 700,000 square feet of new commercial, retail, dining, and office space. The original steel trusses above the internal courtyard will support a soaring, 92-foot-high skylight.

Moynihan

These amenities will contribute to the economic growth and private investment in the ongoing renewal and development of Manhattan’s Far West Side. While the original Penn Station was demolished in the name of “progress,” today, the future of this transit hub — and of an entire Manhattan district — is being shaped through a bold, progressive act of adaptive reuse.

Moynihan
© Empire State Development, courtesy of SOM | Methanoia

The path to a sustainable future

As the world becomes increasingly urbanized, cities are at a crossroads. By 2050, two-thirds of the global population is expected to live in urban areas. While cities grapple with greater density, they must also find solutions for sustainable development. As former UN Secretary-General Ban Ki-moon put it, the climate change battle “will be won or lost in cities.”

Among the many strategies that cities must adopt for sustainable growth, adaptive reuse is a powerful solution that can resolve several key problems at once — increasing urban density, conserving culturally significant structures, and reducing carbon emissions. While reuse may not always be the right solution for every building site, it’s clear that any comprehensive and thoughtful approach to sustainable development must involve the creative reuse of what’s already been built.