| 1957 |
Harry Silverstein and his son, Larry Silverstein, buy their first property, a Manhattan industrial loft building on East 23rd Street. |
| 1978 |
SPI's portfolio contains four million square feet of commercial space, including 521, 529, 530, 689, and 711 Fifth Avenue, 44 Wall Street, and a shopping center in Stamford, Connecticut. |
| 1980 |
Completes a $25 million renovation of the 33-story office building at 11 West 42nd Street, in collaboration with Tishman Speyer Properties, including installation of a co-generation system, the first ever in a Manhattan office tower. |
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Acquires 120 Wall Street and 120 Broadway and remodel them extensively. |
| 1984 |
Acquires the full block site on far West 42nd Street, later to be developed into residential towers. |
| 1986 |
Completes the 47-story Seven World Trade Center. |
| 1989 |
Controls 13 buildings with ten million square feet of space. |
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Completes A&S Plaza on 33rd Street. |
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Develops 43-story Embassy Suites hotel in Times Square. |
| 1991 |
Sets aside 20 stories of the 34-floor office building at 120 Wall Street as tax-free headquarters for nonprofit groups that might otherwise leave the city. |
| 1998 |
Completes development of the Ronald Reagan Building in Washington, DC, the largest privately developed office building in the US. |
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Acquires the 52-story office building at 140 Broadway for $191 million. |
| 2000 |
Completes River Place I, the first tower of the 42nd Street residential project. |
| 2001 |
Completes the largest real estate transaction in New York history by acquiring the World Trade Center for $3.2 billion, only to have it destroyed six weeks later in the terrorist attacks of 9/11. |
| 2002 |
Construction begins on 7 World Trade Center. |
| 2003 |
Selects David Childs to design the Freedom Tower, the tallest of the five new WTC office towers. |
| 2006 |
Opens 7 World Trade Center, the first LEED-certified office building in NYC. |
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Begins construction on the Freedom Tower (later known as One World Trade Center). |
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Establishes joint venture partnership with CalSTRS to develop and acquire up to $2 billion in NYC. |
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Unveils designs for 2, 3 and 4 World Trade Center. |
| 2007 |
Begins construction on Silver Towers. |
| 2008 |
Announces the partnership with Four Seasons to develop Downtown's first five-star hotel. |
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Begins construction on WTC Towers and Four Seasons Downtown New York Hotel and Luxury Residences. |
| 2009 |
Partners with Four Seasons Hotel and Resorts to develop Four Seasons Resort Orlando at Walt Disney World Resort, which will be the largest Four Seasons resort in the world when it opens in 2014. |
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Completes Silver Towers, one of the city's largest rental projects. |
| 2010 |
Finalizes World Trade Center development plan with the States of New York and New Jersey and the Port Authority of New York and New Jersey. |
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Forms Kulczyk Silverstein Properties (KSP), a joint venture with Kulczyk Investments (KI), to develop and acquire properties throughout Central and Eastern Europe |
| 2011 |
Issues $1.25 billion in 40-year bond financing to fund remaining construction of 4 WTC, scheduled to open in 2013. |
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Achieves full occupancy at 7 World Trade Center. |
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KSP acquires its first property, Stratos Office Center in Warsaw. |
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Begins construction on Four Seasons Resort Orlando at Walt Disney World Resort. |