Top 14 Largest Office Buildings in the US

When it comes to tall buildings, the Pentagon, Willis Tower, and Chrysler World Headquarters Technology Center are always on the top of the list. But what are the top 20 Largest Office Buildings in the US? Let’s take a look. Whether you’re an architect or a developer, you can find out here.

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14. U.S. Steel Tower

  • Floor Area: 210000 m2
  • Location: Pennsylvania
  • Construction started: in 1967
  • Construction ended: in 1971
  • Floors: 64

In 1967, the U.S. Steel Corporation chose the architect Harrison & Abramovitz for the construction of the world headquarters of the company. The U.S. Steel Tower is one of the largest office buildings in the world and is a major tourist destination. In addition to being a tourist attraction, the building has been used in several films, including “Dogma” and “Sudden Death.”

13. 28 Liberty Street

  • Floor Area: 213000 m2
  • Location: New York
  • Construction started: in 1957
  • Construction ended: in 1961
  • Floors: 66

One Chase Manhattan Plaza, which is also known as 28 Liberty Street, is a 60-story International-style skyscraper located in the Financial District of Manhattan, New York. This building is located between Liberty Street and Nassau Street and between William and Pine streets. While many people think of it as just another office building, it actually features over 550,000 square feet of office space. The area is home to a diverse selection of high-rise buildings. There are several other office buildings in the Financial District that are similar in design to 28 Liberty Street, but none are quite as striking.

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12. 30 Hudson Yards

  • Floor Area: 240000 m2
  • Location: New York
  • Construction started: in 2014
  • Floors: 103
  • Owned by: The Related Companies

Thirty-Hudson Yards is a new skyscraper in the New York City area. Designed by Kohn Pedersen Fox Associates, this office tower is part of a massive development project called Hudson Yards. With over 2.6 million square feet of office space, 30 Hudson Yards is one of the largest office buildings in the U.S. Currently, it’s the sixth tallest building in New York City.

11. Apple Park

  • Floor Area: 260000 m2
  • Location: California
  • Opening: 2013
  • Cost: $5 billion
  • Owner: Apple Inc.

The new headquarters of Apple is unlike any other technology workspace in the U.S. The new campus is shaped like a perfect circle, with an internal courtyard. It has the look of a spaceship and a large central courtyard that is open to the employees. The building is designed to ease internal circulations and perimeter security. It features large, curved architectural pieces of glass. In addition to its size, the Apple Park campus is designed to be green.

10. John Hancock Center

  • Floor Area: 260126 m2
  • Location: Illinois
  • Construction started: in 1965
  • Construction ended: in 1969
  • Owner: Google
  • Floors: 100

The John Hancock Center is home to some of the most famous companies in the world, including Starbucks, Etihad Airways, and more. It is one of the largest buildings in the city and is also rated as the safest office building in the U.S. The building has more than 700 apartments and restaurants in addition to its offices and was the second-tallest skyscraper in the world when it was completed in 1969. While there are newer skyscrapers being built, it is a classic Chicago landmark.

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9. 111 Eighth Avenue

  • Floor Area: 270000 m2
  • Location: Manhattan
  • Construction ended: in 1932
  • Owner: Google
  • Floors: 18

Located in the heart of Manhattan’s Meatpacking District, 111 Eighth Avenue is one of the country’s largest office buildings. The building was originally constructed in 1932 and was developed as the Port Authority of New York headquarters. Currently, Google is the building’s largest tenant. Other notable tenants include Nike, Deutsche, and Bank of New York.

8. MetLife Building

  • Floor Area: 292000 m2
  • Location: New York
  • Construction started: in 1959
  • Construction ended: in 1962
  • Floors: 59

The MetLife Building is one of the largest office structures in the United States, with over 2.4 million square feet of space. It was completed in 1963 and was renamed after the bank MetLife purchased the building. Its large floor plates and prime location made it attractive to corporations.

7. 55 Water Street

  • Floor Area: 325000 m2
  • Location: New York
  • Construction started: in 1969
  • Construction ended: in 1972
  • Floors: 53

In 1973, the 55 Water Street office building in Lower Manhattan was the world’s largest privately-owned building. The building was renovated by Kohn Pedersen Fox in 2005 and featured state-of-the-art amenities. It is one of the largest office buildings in the U.S. Located in New York City, 55 Water Street is a prime location to attract the corporate world.

6. One World Trade Center

  • Floor Area: 325289 m2
  • Location: New York
  • Construction started: in 2006
  • Construction ended: 2014
  • Floors: 94

The design of One World Trade Center was meant to be a symbol of the American spirit and a landmark to be remembered for generations to come. The towering structure of One World Trade Center, commonly known as the Freedom Tower completed in 2014. Designed by Skidmore, Owings, and Merrill, this building is a modern masterpiece with column-free office space, floor-to-ceiling windows, and a plethora of amenities. While the original name of this building was Freedom Tower, it has been renamed One World Trade Center in honor of its victims.

5. Aon Center Chicago

  • Floor Area: 334451 m2
  • Location: Illinois
  • Construction started: in 1970
  • Construction ended: in 1973
  • Floors: 83

The Aon Center is a large office building in the heart of Chicago’s East Loop neighborhood. It is also one of the most beautiful. The Aon Center Chicago is a modern skyscraper with 83 floors. The building is highly resistant to earthquakes and is constructed to withstand strong winds. Its impressive height has made it one of the largest office buildings in the U.S.

4. Merchandise Mart

  • Floor Area: 372000 m2
  • Location: Illinois
  • Construction started: in 1928
  • Construction completed: 1930
  • Floors: 18 bases, 25 towers.

The Merchandise Mart was the largest building in the world when it opened on May 5, 1930. The building retained its title until the Pentagon was built in 1943. In 1946, the Kennedy family purchased the building. They later sold it to Vornado Realty Trust. The Merchandise Mart opened with the sole purpose of serving the wholesale trade in the United States. Today, the Merchandise Mart is home to offices for many companies.

3. Willis Tower

  • Floor Area: 416000 m2
  • Location: Illinois.
  • Construction started: 1970
  • Construction completed: 1974
  • Floors: 108 + 3 basement floors

One of the most famous skyscrapers in the U.S. is the Willis Tower, which is one of the largest office buildings in the world. Located on the 103rd floor, the Skydeck provides panoramic views of Chicago and Lake Michigan. Its all-glass windows allow visitors to experience the skyscraper’s magnificent views without any distractions. The building’s unique design features a “bundled tube” design.

2. Chrysler World Headquarters

  • Floor Area: 490000 m2
  • Location: Michigan.
  • Construction started: in 1994
  • Construction completed: 1996
  • Owner: Stellaris

The complex of the Chrysler World Headquarters and Technology Center is one of the largest office buildings in the U.S. It was constructed over a four-year period. It is owned by an automobile manufacturer Stellaris. The building was constructed to maximize product development efficiency and interdepartmental collaboration. It was just 1 mile from the Ford Plant and the Highland Park Ford Plant, which were the former American headquarters of the automaker.

1. The Pentagon

  • Floor Area: 620000 m2
  • Location: Arlington, Virginia
  • Construction started: on September 11, 1941
  • Construction Completed: January 15, 1943
  • Cost: $83 million
  • Floor Count: 7

The Pentagon is one of the largest office buildings on the U.S. mainland, with a total floor area of 6,636,360 square feet. The Pentagon was built on the site of a former slum, Lower Hell, which was populated primarily by African Americans. The shape of the building was determined by the local features of the site. The original pentagonal design was changed in the 1960s, but the overall shape remains the same.

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