Willis Tower

The Willis Tower is a 1,450.58 foot skyscraper in. At the time of its completion in 1973 it was the tallest building in the world.Currently, the Sears Tower is the second tallest skyscraper in the United States. Although Sears' naming rights had expired in 2003, in March 2009 London-based insurance broker Willis Group Holdings, Ltd., purchased the building's naming rights. In June 2009 the building was renamed after the firm.

Willis Tower Plat

The Willis Tower is a 1,450.58 foot skyscraper in. At the time of its completion in 1973 it was the tallest building in the world.Currently, the Sears Tower is the second tallest skyscraper in the United States. Although Sears' naming rights had expired in 2003, in March 2009 London-based insurance broker Willis Group Holdings, Ltd., purchased the building's naming rights. In June 2009 the building was renamed after the firm.

One Prudential Plaza

One Prudential Plaza (formerly known as the Prudential Building) is a 44 story structure completed in 1955 as the headquarters for Prudential's Mid-America company. We have provided engineering services at this site during construction.

One Prudential Plaza Plat

One Prudential Plaza (formerly known as the Prudential Building) is a 44 story structure completed in 1955 as the headquarters for Prudential's Mid-America company. We have provided engineering services at this site during construction.

Wrigley Building

The Wrigley Building (400-410 North Michigan Avenue) is located directly across Michigan Avenue from the Tribune Tower on the Magnificent Mile.The land was selected by chewing gum magnate William Wrigley Jr. to headquarter his gum company. The building was designed by the architectural firm of Graham, Anderson, Probst & White using the shape of the Giralda tower of Seville's Cathedral combined with French Renaissance details. We have provided topographic services at this location.

Wrigley Building Plat

The Wrigley Building (400-410 North Michigan Avenue) is located directly across Michigan Avenue from the Tribune Tower on the Magnificent Mile.The land was selected by chewing gum magnate William Wrigley Jr. to headquarter his gum company. The building was designed by the architectural firm of Graham, Anderson, Probst & White using the shape of the Giralda tower of Seville's Cathedral combined with French Renaissance details. We have provided topographic services at this location.

Tribune Tower

The Tribune Tower is a Gothic building located at 435 North Michigan Avenue. It is the home of the Chicago Tribune and Tribune Company. WGN Radio also broadcasts from the building, with ground-level studios overlooking nearby Pioneer Court and Michigan Avenue. CNN's Chicago bureau is located in the building. It is listed as a Chicago Landmark and is a contributing property to the Michigan-Wacker Historic District. We have provided engineering services at this location.

6th Floor Tribune Tower Plat

The Tribune Tower is a Gothic building located at 435 North Michigan Avenue. It is the home of the Chicago Tribune and Tribune Company. WGN Radio also broadcasts from the building, with ground-level studios overlooking nearby Pioneer Court and Michigan Avenue. CNN's Chicago bureau is located in the building. It is listed as a Chicago Landmark and is a contributing property to the Michigan-Wacker Historic District. We have provided engineering services at this location.

Smurfit-Stone Building

Smurfit-Stone Building is a 41 story, 582 foot skyscraper located at 150 North Michigan Avenue. It is popularly referred to as the Diamond Building.Construction began in 1983 and was completed in 1984. The building, noted for its unusually slanted roof, was designed by Sheldon Schlegman of A. Epstein and Sons. We have provided extensive elevations & topographic surveys of this site.

Mercantile Exchange

Chicago Mercantile Exchange Center is an office complex of two towers. They were completed in 1987 and have 40 floors. Fujikawa Johnson designed the buildings. We have provided extensive surveys and topography of the Mercantile Exchange.

Mercantile Exchange Plat

Chicago Mercantile Exchange Center is an office complex of two towers. They were completed in 1987 and have 40 floors. Fujikawa Johnson designed the buildings. We have provided extensive surveys and topography of the Mercantile Exchange.

Madison Plaza

Located at 200 West Madison Street, the building rises 599 feet. It contains 45 floors, and was completed in 1982. Madison Plaza currently stands as the 36th-tallest building in the city. The architectural firm who designed the building was Skidmore, Owings & Merrill, the same firm who designed Chicago's Sears Tower and John Hancock Center and the Burj Dubai in Dubai. We have provided extensive surveying services at this site.

Madison Plaza Plat

Located at 200 West Madison Street, the building rises 599 feet. It contains 45 floors, and was completed in 1982. Madison Plaza currently stands as the 36th-tallest building in the city. The architectural firm who designed the building was Skidmore, Owings & Merrill, the same firm who designed Chicago's Sears Tower and John Hancock Center and the Burj Dubai in Dubai. We have provided extensive surveying services at this site.

American Medical Association

Located at 505 North State Street, the building rises 427 feet and contains 30 floors. This skyscraper was completed in 1990 and has an adjoining 20 story tower. We have provided extensive surveying services at this site.

515 North State Street Plat

300 North LaSalle Street

300 North LaSalle is a 60 story mixed-use building located on the north bank of the Chicago River.The building includes offices, retail shops, restaurants, and public spaces as well as three levels of underground parking. We have provided extensive surveying, topographic and engineering services at this site.

300 North LaSalle Street Plat

300 North LaSalle is a 60 story mixed-use building located on the north bank of the Chicago River.The building includes offices, retail shops, restaurants, and public spaces as well as three levels of underground parking. We have provided extensive surveying, topographic and engineering services at this site.

Hines Tower (Corporate)-1_edited

Citicorp Center

Citigroup Center is a 42 story, 588-foot skyscraper located at 500 W. Madison (between Clinton and Canal Streets), the structure was designed by the architecture firm Murphy/Jahn. We have provided extensive surveying services at this site.

55 West Monroe Street

40 story skyscraper located at 55 West Monroe Street. It was completed in 1980 and designed by Murphy and Jan Architects. We have provided extensive surveys and topographic services at this site.

55 W. Monroe

40 story skyscraper located at 55 West Monroe Street. It was completed in 1980 and designed by Murphy and Jan Architects. We have provided extensive surveys and topographic services at this site.

Chicago Board of Trade

Chicago Board of Trade is located at 141 West Jackson Boulevard. It is housed in a building designed by architects Holabird & Root that is 605 feet tall, the tallest in Chicago until the Richard J. Daley Center superseded it in 1965. We have provided extensive surveying services at this site.

CNA Plaza

CNA Center is a 600-foot, 44-story high-rise building located at 333 South Wabash Avenue. It was designed by the firm of Graham, Anderson, Probst & White and was completed in 1972. We have provided extensive surveying services at this site.

CNA Plaza Plat

CNA Center is a 600-foot, 44-story high-rise building located at 333 South Wabash Avenue. It was designed by the firm of Graham, Anderson, Probst & White and was completed in 1972. We have provided extensive surveying services at this site.

Harris Bank Building

One Financial Place Plat

The United Building

The United Building Plat

150 North Michigan Avenue Plat

Hyatt Center

Hyatt Center Plat