DeSimone Consulting Engineering is a structural engineering firm founded by Vincent J. DeSimone in 1969 in

New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...

. The firm provides

structural engineering Structural engineering is a sub-discipline of civil engineering in which structural engineers are trained to design the 'bones and joints' that create the form and shape of human-made Structure#Load-bearing, structures. Structural engineers also ...

services to architects, owners and developers, and performs structural analysis and design for all types of buildings at all project phases. DeSimone also launched a Property Loss Consulting division in 2016. The company has offices in

Boston Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeas ...

Chicago Chicago is the List of municipalities in Illinois, most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388, as of the 2020 United States census, 2020 census, it is the List of Unite ...

, Dallas-Fort Worth,

Foxborough Foxborough is a town in Norfolk County, Massachusetts, United States. Located in the Greater Boston metropolitan area, it is about southwest of Boston. The population was 18,618 at the 2020 census. "Foxborough" is the official spelling of th ...

Houston Houston ( ) is the List of cities in Texas by population, most populous city in the U.S. state of Texas and in the Southern United States. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the county seat, seat of ...

Las Vegas Las Vegas, colloquially referred to as Vegas, is the most populous city in the U.S. state of Nevada and the county seat of Clark County. The Las Vegas Valley metropolitan area is the largest within the greater Mojave Desert, and second-l ...

Miami Miami is a East Coast of the United States, coastal city in the U.S. state of Florida and the county seat of Miami-Dade County, Florida, Miami-Dade County in South Florida. It is the core of the Miami metropolitan area, which, with a populat ...

New Haven New Haven is a city of the U.S. state of Connecticut. It is located on New Haven Harbor on the northern shore of Long Island Sound. With a population of 135,081 as determined by the 2020 U.S. census, New Haven is the third largest city in Co ...

San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...

London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...

Medellín Medellín ( ; or ), officially the Special District of Science, Technology and Innovation of Medellín (), is the List of cities in Colombia, second-largest city in Colombia after Bogotá, and the capital of the department of Antioquia Departme ...

Abu Dhabi Abu Dhabi is the capital city of the United Arab Emirates. The city is the seat of the Abu Dhabi Central Capital District, the capital city of the Emirate of Abu Dhabi, and the UAE's List of cities in the United Arab Emirates, second-most popu ...

, and

Dubai Dubai (Help:IPA/English, /duːˈbaɪ/ Help:Pronunciation respelling key, ''doo-BYE''; Modern Standard Arabic, Modern Standard Arabic: ; Emirati Arabic, Emirati Arabic: , Romanization of Arabic, romanized: Help:IPA/English, /diˈbej/) is the Lis ...

. DeSimone has designed over 10,000 projects in 40 states and 45 countries.

History

Vincent J. DeSimone (1969 - 2002)

DeSimone Consulting Engineering was founded in 1969 by Vincent "Vince" J. DeSimone, (born in 1937) a graduate from

Manhattan College Manhattan University (previously Manhattan College) is a private, Catholic university in New York City. Originally established in 1853 by the De La Salle Christian Brothers (Institute of the Brothers of the Christian Schools) as an academy fo ...

in 1959. Vince stepped down as CEO in 2002, making way for his son, Stephen V. DeSimone. Vince would work as President of the firm until his passing in 2016 from a battle with cancer.

Stephen V. DeSimone (2002 - present)

The firm has made a concerted effort to break into the engineering field in the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...

, opening a

office in May 2022. However, struggled to gain significant clients due to the lack of the firms brand recognition in the United Kingdom. In an effort to remedy this, the firm acquired DP Squared on 1 August 2023, one of the leading British structural engineering firms in

Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...

, and

Northern England Northern England, or the North of England, refers to the northern part of England and mainly corresponds to the Historic counties of England, historic counties of Cheshire, Cumberland, County Durham, Durham, Lancashire, Northumberland, Westmo ...

as a whole. ''

The Architect's Newspaper ''The Architect's Newspaper'' is an architectural publication that covers the United States in monthly printed issues and online. The paper was founded in 2003 by William Menking, editor-in-chief, and Diana Darling, publisher, to bring architect ...

'' named DeSimone Consulting Engineering the best structural engineering firm in the

Northeastern United States The Northeastern United States (also referred to as the Northeast, the East Coast, or the American Northeast) is List of regions of the United States, census regions United States Census Bureau. Located on the East Coast of the United States, ...

for 2023. '' CEO Monthly'' named Stephen DeSimone the 2024 "Most Innovative Structural and Façade Consultancy CEO" due to his leadership style, commitment to the company's vision, and his capability to navigate the changing engineering industry landscape.

Engineering

Exoskeleton buildings

DeSimone is recognized for its work with exoskeleton buildings, including the award-winning residential building on the

Upper West Side The Upper West Side (UWS) is a neighborhood in the borough of Manhattan in New York City. It is bounded by Central Park on the east, the Hudson River on the west, West 59th Street to the south, and West 110th Street to the north. The Upper We ...

of Manhattan at 170 Amsterdam Avenue. The 20-story residential high-rise features a concrete exoskeleton with a diagrid design and was developed using newly available modeling technology. The building's exoskeleton moves the structure to the exterior, allowing for flexible floor plans free of columns. A specialized concrete mix was used for the exterior structure which was made to look like limestone. Fiberglass was also used also used on the exterior. DeSimone was nominated and received a Diamond Award for Structural Systems from the

American Council of Engineering Companies The American Council of Engineering Companies (ACEC) is the oldest and largest business association of engineering companies. It is organized as a federation of 52 state and regional councils with national headquarters in Washington, D.C., compris ...

in 2016 for their work on 170 Amsterdam. DeSimone is also the structural engineering firm for One Thousand Museum in

, Florida. Designed by

Zaha Hadid Dame Zaha Mohammad Hadid ( ''Zahā Ḥadīd''; 31 October 1950 – 31 March 2016) was an Iraqi-born British architect, artist, and designer. She is recognised as a key figure in the architecture of the late-20th and early-21st centuries. Born ...

, the building is the first skyscraper by the Pritzker-winning architect in the United States. DeSimone developed a curved "root" exoskeleton structure to support the building. The record setting auger cast pile

deep foundation A pile or piling is a vertical structural element of a deep foundation, driven or drilled deep into the ground at the building site. A deep foundation is a type of foundation (architecture), foundation that transfers building loads to the e ...

system was installed by HJ Foundation, part of the

keller Group Keller Group plc () is a geotechnical engineering company. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. The company is the world's largest geotechnical specialist contractor. History The company was establ ...

. Like with The Grove at Grand Bay project, placing the buildings support systems on the exterior allows for increased space inside and reduces the amount of materials used. The exoskeleton structure was originally purely cosmetic, but DeSimone was able to integrate the design into the structural engineering, creating the exterior support structure out of hollow, precast, concrete panels.

Twisting buildings

DeSimone engineered the first truly twisting towers in the US with The Grove at Grand Bay towers in

Miami, Florida Miami is a East Coast of the United States, coastal city in the U.S. state of Florida and the county seat of Miami-Dade County, Florida, Miami-Dade County in South Florida. It is the core of the Miami metropolitan area, which, with a populat ...

starchitect Starchitect is a portmanteau used to describe architects whose celebrity and critical acclaim have transformed them into stars of the architecture world and may even have given them some degree of fame among the general public. Celebrity status is ...

Bjarke Ingels Bjarke Bundgaard Ingels (; born 2 October 1974) is a Danish architect, founder and creative partner of Bjarke Ingels Group (BIG). In Denmark, Ingels became well known after designing two housing complexes in Ørestad: VM Houses and Mountain Dwe ...

. Grove at Grand Bay features two 20-story buildings with 98 apartments that feature 12-foot high ceilings and 14-foot deep balconies. The twisting element of the buildings has a total rotation of 38 degrees, and provides panoramic views of the

Biscayne Bay Biscayne Bay is a lagoon with characteristics of an estuary located on the Atlantic coast of South Florida. The northern end of the lagoon is surrounded by the densely developed heart of the Miami metropolitan area while the southern end is large ...

and the Miami skyline. Like One Thousand Museum, the auger cast pile

system for this building was by HJ Foundation, part of the

Keller Group Keller Group plc () is a geotechnical engineering company. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. The company is the world's largest geotechnical specialist contractor. History The company was establ ...

. The twisting nature of the columns posed a number of structural challenges. The main challenge was to resist torsion generated in the tower core due to the sloping column geometry. The horizontal component of the gravity load in the columns is resolved in the slabs by transferring it to the interior core shear walls, which are the only consistently vertical structural elements in the building. DeSimone was nominated and received a Platinum Award for Structural Systems from the

in 2016 for their work on The Grove at Grand Bay

Skyscrapers and supertalls

DeSimone has served as structural engineer for many

skyscrapers A skyscraper is a tall continuously habitable building having multiple floors. Most modern sources define skyscrapers as being at least or in height, though there is no universally accepted definition, other than being very tall high-rise bui ...

and is currently working on a supertall building, 125 Greenwich Street designed by

Rafael Viñoly Rafael Viñoly Beceiro (1 June 1944 – 2 March 2023) was an Uruguayan-born architect based in New York. He was the principal of Rafael Viñoly Architects, which he founded in 1983. The firm has offices in New York City, Palo Alto, London, Ma ...

which tops out at over 1,000 feet. DeSimone is also the engineering firm behind

99 Hudson Street 99 Hudson is a 79-story condominium in Jersey City, New Jersey, Jersey City, New Jersey. It is the tallest building in Jersey City and the state of New Jersey, and the List of tallest buildings in the United States, 46th tallest building in the ...

, an 889-foot residential tower under construction in

Jersey City, New Jersey Jersey City is the List of municipalities in New Jersey, second-most populous

. Upon completion, it will be the tallest building in the state of New Jersey and the 4th tallest residential tower in the United States.

Work with "Starchitects"

DeSimone has worked on projects with many of the world's most renowned architects and architectural firms including

Richard Meier Richard Meier (born October 12, 1934) is an American abstract artist and architect, whose geometric designs make prominent use of the color white. A winner of the Pritzker Architecture Prize in 1984, Meier has designed several iconic buildings ...

, Robert A.M. Stern,

Foster and Partners Foster and Partners (also Foster + Partners) is a British international architecture firm with its headquarters in London, England. It was founded in 1967 by British architect and designer Norman Foster. The firm has been involved in the desig ...

Rem Koolhas Remment Lucas Koolhaas (; born 17 November 1944) is a Dutch architect, architectural theorist, urbanist and Professor in Practice of Architecture and Urban Design at the Graduate School of Design at Harvard University. He is often cited as a re ...

Office for Metropolitan Architecture The Office for Metropolitan Architecture (OMA) is an international architectural firm with offices in Rotterdam, New York, Hong Kong, Doha, and Australia. The firm is currently led by eight partners - Rem Koolhaas, Reinier de Graaf, Ellen va ...

(OMA),

Skidmore, Owings & Merrill SOM, an initialism of its original name Skidmore, Owings & Merrill LLP, is a Chicago-based architectural, urban planning, and engineering firm. It was founded in 1936 by Louis Skidmore and Nathaniel Owings. In 1939, they were joined by engineer ...

(SOM),

Kohn Pedersen Fox Kohn Pedersen Fox Associates (KPF) is an American architectural firm based in New York City that provides architecture, interior, programming and master planning services. They engineer different projects including civic and cultural spaces, com ...

(KPF),

Arquitectonica Arquitectonica is an international architecture, landscape architecture, interior design, and urban planning design firm headquartered in Miami, Miami, Florida’s Coconut Grove neighborhood. The firm also has offices in ten other cities thr ...

, and SLCE.

Neom

DeSimone is performing structural engineering services for

Saudi Arabia Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in West Asia. Located in the centre of the Middle East, it covers the bulk of the Arabian Peninsula and has a land area of about , making it the List of Asian countries ...

Neom Neom (styled NEOM; , ) is an arcology and planned city being built by Saudi Arabia in Tabuk Province. Launched in 2017 by crown prince Mohammad bin Salman, the site is at the northern tip of the Red Sea, due east of Egypt across the Gulf of A ...

, namely, The Line.

Sustainability

DeSimone is a

U.S. Green Building Council The U.S. Green Building Council (USGBC), founded in 1993, is a private 501(c)(3), membership-based non-profit organization that promotes sustainability in building design, construction, and operation. USGBC is best known for its development of t ...

(USGBC) National Member organization. DeSimone's work on P.S. 62, The Kathleen Grimm School for Leadership and Sustainability, New York City's first

net zero Global net-zero emissions is reached when greenhouse gas emissions and removals due to human activities are in balance. It is often called simply net zero. ''Emissions'' can refer to all greenhouse gases or only carbon dioxide (). Reaching net ze ...

energy school, has received numerous awards including the 2016 AIANY COTE Award, Best Green Project by the Staten Island Chamber of Commerce, Architizer A+ Awards – Primary and High Schools 2016, and Engineering News Record (New York Region) – Best Green Project 2016.

Mergers and acquisitions

Henderson Rogers

DeSimone's first acquisition would be the April 28, 2020 purchase of Henderson Rogers Structural Engineers. The

based firm was previously owned by Ryan Binkley's Generational Equity and specialized in aviation, education, commercial, sports and healthcare facilities. The company was established in 2005, and since that time had worked on over 3,300 projects, for over 400 clients. At the time of the acquisition the firm was being led by principle engineer and president K. Elaine Rogers. DeSimone stated that they had acquired the firm to expand their reach into

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

and the

American south The Southern United States (sometimes Dixie, also referred to as the Southern States, the American South, the Southland, Dixieland, or simply the South) is census regions United States Census Bureau. It is between the Atlantic Ocean and the ...

as a whole.

RRC Engineering

On September 2, 2020, DeSimone Consulting Engineering announced they had purchased RRC Engineering, a Massachusetts-based structural engineering firm specializing in the design of

data center A data center is a building, a dedicated space within a building, or a group of buildings used to house computer systems and associated components, such as telecommunications and storage systems. Since IT operations are crucial for busines ...

s to diversify the firms holdings and to offer RRC's engineers further resources. RRC Engineering was founded by its

eponymous An eponym is a noun after which or for which someone or something is, or is believed to be, named. Adjectives derived from the word ''eponym'' include ''eponymous'' and ''eponymic''. Eponyms are commonly used for time periods, places, innovati ...

Robert Chartrand in November 2002. Prior to its merger into DeSimone, its profile boasted numerous data centers around the country, as well as the headquarters of the '' Mobile Press'', the ''

Winston-Salem Journal The ''Winston-Salem Journal'' is an American, English language daily newspaper primarily serving Winston-Salem and Forsyth County, North Carolina. It also covers Northwestern North Carolina. The paper is owned by Lee Enterprises. ''The Journ ...

'' and Bob's Discount Furniture, as well as

Tufts University Tufts University is a private research university in Medford and Somerville, Massachusetts, United States, with additional facilities in Boston and Grafton, as well as Talloires, France. Tufts also has several Doctor of Physical Therapy p ...

's Equine Center as part of its University of Veterinary medicine. RRC would become DeSimone's

branch whose principle engineer would remain Robert Chartrand.

Fourzero

On May 11, 2022, DeSimone announced its acquisition of the

Coral Gables Coral Gables is a city in Miami-Dade County, Florida, United States. The city is part of the Miami metropolitan area of South Florida and is located southwest of Downtown Miami. As of the 2020 U.S. census, it had a population of 49,248. Cora ...

based engineering firm Fourzero. Part of the firm's larger expansion into Florida, and southeastern market, Fourzero was founded in 2013 and led by 20 year industry veteran Federico Balestrazzi, who had an extensive record of working with DeSimone's Miami office. Fourzero specialized in

façade A façade or facade (; ) is generally the front part or exterior of a building. It is a loanword from the French language, French (), which means "frontage" or "face". In architecture, the façade of a building is often the most important asp ...

operations, namely in design, testing, manufacture, estimating, and installation. Fourzero also specialized in designing

hurricane A tropical cyclone is a rapidly rotating storm system with a low-pressure area, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depending on its ...

-proof structures expanding DeSimone's design capabilities in Hurricane Alley.

Dowco

On January 6, 2023, DeSimone Consulting Engineering announced they had acquired Dowco, a Langley,

British Columbia British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that ...

, based

steel detailer A steel detailer is a person who produces detailed drawings for steel fabricators and steel erectors. The detailer prepares detailed plans, drawings and other documents for the manufacture and erection of steel members (columns, beams, braces, ...

for an undisclosed amount. Dowco was founded in June 1970 by Hugh Dobbie, Joe Ord and Jack Wilson (whose last initials spell DOW). The company had been an early adopter of

computer-aided design Computer-aided design (CAD) is the use of computers (or ) to aid in the creation, modification, analysis, or optimization of a design. This software is used to increase the productivity of the designer, improve the quality of design, improve c ...

(CAD) and even developed early software as well as running CAD classes. Prior to its acquisition in 2023, Dowco itself underwent several mergers and acquisitions, including Adveno Consultants in 1982, Total Structural Detailing in 2004, FabTrol Systems Inc. in 2008, SDE Steel Detailing and Consulting in 2013, RISA Technologies in 2015, and Acuna y Asociados in 2016 and had offices in

Chile Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Paci ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

and the

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

. DeSimone had acquired the firm in order to have in-house detailers, as opposed to contracting other firms, in order to limit risk to their clients.

DP Squared

On 1 August 2023, DeSimone acquired DP Squared, a civil engineering firm established by Darren and Deborah Paine in 2004. The firm was headquartered in

Hebden Bridge Hebden Bridge is a market town in the Calderdale district of West Yorkshire, England. It is in the Upper Calder Valley, west of Halifax and 14 miles (21 km) north-east of Rochdale, at the confluence of the River Calder and the Hebden W ...

, which will transform into DeSimone's

branch, and has become DeSimone's second branch in the

, besides their London branch. DP Squared was known for its environmental and

LEED Leadership in Energy and Environmental Design (LEED) is a Green building certification systems, green building certification program used worldwide. Developed by the non-profit U.S. Green Building Council (USGBC), it includes a set of rating ...

s initiatives, and for being the structural engineers for

Deansgate Square Deansgate Square, formerly known as Owen Street, is a residential skyscraper cluster on the southern edge of Manchester City Centre, England, consisting of four towers, the tallest of which is . The site is just south of Deansgate railway stat ...

. The firm was noted by ''

New Civil Engineer ''New Civil Engineer'' is the monthly magazine for members of the Institution of Civil Engineers (ICE), the UK chartered body that oversees the practice of civil engineer A civil engineer is a person who practices civil engineering – the appl ...

'' for punching above their weight, with a relatively small team that has been responsible for the structural engineering of 5 of the 6 tallest buildings in

. They also noted the firms commitment to creating a friendly and inclusive work-space environment. DeSimone acquired the firm to expand their profile in the United Kingdom, mostly due to DP Squared working on projects similar to those DeSimone is known for, and also due to their name recognition in the British civil engineering field.

Decipher

On October 17, 2023, continuing the firm's push to establish themselves in the United Kingdom, DeSimone acquired the

Cheshire Cheshire ( ) is a Ceremonial counties of England, ceremonial county in North West England. It is bordered by Merseyside to the north-west, Greater Manchester to the north-east, Derbyshire to the east, Staffordshire to the south-east, and Shrop ...

based construction

consultancy A consultant (from "to deliberate") is a professional (also known as ''expert'', ''specialist'', see variations of meaning below) who provides advice or services in an area of specialization (generally to medium or large-size corporations). Con ...

Decipher. The group was founded in 2001 and was continuously led by its founder Paul Gibbons. As with DP Squared, Decipher will continue to operate as a brand name of DeSimone, with the moniker "a DeSimone company."

MER Engineers

On October 2, 2024, DeSimone acquired the

Dayton Dayton () is a city in Montgomery County, Ohio, United States, and its county seat. It is the List of cities in Ohio, sixth-most populous city in Ohio, with a population of 137,644 at the 2020 United States census, 2020 census. The Dayton metro ...

Ohio Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...

based MER Engineers that specialized in precast and tilt-up design and detailing in an effort to expand DeSimone's offered services to clients. Founded as Steinbicker & Associates in 1982, the firm has worked across the US, Canada, and Caribbean. MER will continue to operate out of Dayton as a DeSimone brand.

KP Elevator

On April 2, 2025, DeSimone acquired the

based KP Elevator Consultants whose services included due diligence, concept development, and final construction of Elevators for new construction and renovation. The firm would be merged into DeSimone's existing San Francisco office. DeSimone and KP Elevator had collaborated on several projects, such as 290 Coles St. in

Jersey City Jersey City is the List of municipalities in New Jersey, second-most populous

and is part of DeSimone's continuing strategy to diversify its offerings to clients. KP Elevator's founder was Kelly Houlihan, a 37-year industry veteran and will work at DeSimone as the principle of the new Vertical Transportation team.

Notable projects

- Jersey City, New Jersey * 100 11th Avenue - New York, New York * 100 East 53rd Street - New York, New York * 1450 Brickell - Miami, Florida * 17 State Street - New York, New York *

220 Central Park South 220 Central Park South is a residential skyscraper in Midtown Manhattan in New York City, situated along Billionaires' Row on the south side of Central Park South between Broadway and Seventh Avenue. 220 Central Park South was designed by R ...

- New York, New York * 360 State Street - New Haven, Connecticut * 45 East 22nd Street - New York, New York * 90 West Street - New York, New York * 900 Biscayne - Miami, Florida *

Akron Art Museum The Akron Art Museum is an art museum in Akron, Ohio, United States. The museum first opened on February 1, 1922, as the Akron Art Institute. It was located in two borrowed rooms in the basement of the public library. The Institute offered clas ...

- Akron, Ohio *

Art Gallery of Alberta The Art Gallery of Alberta (AGA) is an art museum in Edmonton, Alberta, Canada. The museum occupies an building at Churchill Square (Edmonton), Churchill Square in downtown Edmonton. The museum building was originally designed by Donald G. Bittor ...

- Edmonton, Alberta * Avalon Willoughby Square - Brooklyn, New York * Casa 74 - New York, New York * Erie Art Museum Expansion - Erie, Pennsylvania * Four Seasons Hotel & Tower - Miami Miami, Florida * IAC Headquarters New York, New York *

Jacksonville Public Library The Jacksonville Public Library is the public library system of Jacksonville, Florida, United States. It primarily serves Jacksonville and Duval County merged areas, and is also used by the neighboring Baker, Nassau, Clay, and St. Johns coun ...

- Jacksonville, Florida *

Las Vegas City Hall Las Vegas City Hall is the center of municipal government for the City of Las Vegas, Nevada. It is located downtown, with its main entrance on Main Street. History This building replaced the former building which had been used since 1973. Bui ...

- Las Vegas, Nevada * Marbella South - Jersey City, New Jersey *

Marquis A marquess (; ) is a nobleman of high hereditary rank in various European peerages and in those of some of their former colonies. The German-language equivalent is Markgraf (margrave). A woman with the rank of a marquess or the wife (or wido ...

- Miami, Florida * Millennium Tower - San Francisco, California * O'Reilly Theater - Pittsburgh, Pennsylvania * One Thousand Museum Tower - Miami, Florida *

Panorama Tower Panorama Tower is a mixed-use 85-story skyscraper in Miami, Florida, United States. Located in the Brickell district of Downtown Miami, it is the tallest building in Miami, and the tallest building in Florida. Construction on Panorama Tower ...

- Miami, Florida * Paramount Miami World Center - Miami, Florida * Santander Bank Building - Miami, Florida * Sofitel New York - New York, New York *

Taubman Museum of Art The Taubman Museum of Art, formerly the Art Museum of Western Virginia, is an art museum in downtown Roanoke, Virginia, United States. Formally established in 1951, the museum was housed in several locations around Roanoke before moving in 2008 t ...

- Roanoke, Virginia *

The Cosmopolitan of Las Vegas The Cosmopolitan of Las Vegas (commonly referred to simply as The Cosmopolitan or The Cosmo) is a resort casino and hotel on the Las Vegas Strip in Paradise, Nevada. It is owned by The Blackstone Group, Stonepeak Partners, and Cherng Family Tr ...

- Las Vegas, Nevada * The Modern - Fort Lee, New Jersey * The Ritz-Carlton Washington D.C. - Washington, DC * The Standard High Line - New York, New York *

Tower 28 Tower 28 is a skyscraper in the Long Island City neighborhood of Queens. It is the fourth tallest residential building in Queens and the sixth tallest residential building in New York City outside of Manhattan. The building includes around 4 ...

- Queens, New York *

Tropicana Casino & Resort Atlantic City The Tropicana Atlantic City, often referred to as The Trop, is a resort, casino hotel located on the beach and Boardwalk in Atlantic City, New Jersey. It is owned by Gaming and Leisure Properties and operated by Eldorado Resorts, Caesars Enterta ...

- Atlantic City, New Jersey *

Trump SoHo The Dominick, formerly the Trump SoHo, is a $450 million, 46-story, 391-unit hotel condominium located at 246 Spring Street at the corner of Varick Street in the Hudson Square neighborhood of Manhattan, New York City. It was announced in 2006, ...

- New York, New York

References

External links

* {{Official website, 1=http://www.de-simone.com/ 1969 establishments in New York City American companies established in 1969 Construction and civil engineering companies established in 1969 Consulting firms established in 1969 Design companies established in 1969 Construction and civil engineering companies of the United States Companies based in New York City