HDR, Inc.

HDR, Inc. is an employee-owned design firm, specializing in engineering, architecture, environmental, and construction services. HDR has worked on projects in all 50 U.S. states and in 60 countries, including notable projects such as the Hoover Dam Bypass, Fort Belvoir Community Hospital, and Roslin Institute building. The firm employs over 10,000 professionals and represents hundreds of disciplines in various markets. HDR is the 10th largest employee-owned company in the United States [2] with revenues of over $2.4 billion in 2017.[3] Engineering News-Record ranked HDR as the 7th largest design firm in the United States in 2019.[4]

HDR, Inc.
TypeEmployee Owned Corporation
IndustryProfessional Services
HeadquartersOmaha, Nebraska United States
Number of locations
More than 225 offices in North America, Asia, Europe, The Middle East, and Australia
Key people
Eric L. Keen, Chairman and CEO
Number of employees
HDR, Inc. in Canada


In 1917, the Henningson Engineering Company started as a civil engineering firm in Omaha, where HDR's headquarters remain today. Willard Richardson and Charles W. "Chuck" Durham joined the firm in 1939 as interns. Circa 1950, Richardson and Durham had purchased shares in the firm, and it became known as Henningson, Durham and Richardson, Inc.

The company's first project was designing a power station for the city of Ogallala, Nebraska. Similar projects followed as the firm built water, sewer, electric, and road systems for cities and towns throughout the Midwestern United States, emerging from frontier status.

In 1983, Bouygues SA, France's largest construction company, purchased HDR for $60 million. An employee group bought back HDR in 1996 for $55 million. The company has since grown from 1,100 employees to over 10,000.[5]


HDR was the first A/E firm to join the U.S. Green Building Council in 1994, and was involved in the development of the first Leadership in Energy and Environmental Design (LEED) Green Building Rating Tool. More recently, the firm received attention for its Sustainable Return on Investment (SROI) process, wherein clients evaluate sustainable strategies today and into the future.[6]

HDR also was one of the first firms involved with the Institute for Sustainable Infrastructure,[7] which aims to do for infrastructure what the U.S. Green Building Council has done for buildings. HDR's project, the William Jack Hernandez Sport Fish Hatchery, was the first to receive an Envision rating from ISI.[8]

In the early 1990s, HDR formally established a Sustainable Solutions Program tasked with integrating sustainability into all business practices. Today, the program includes aspects of the A/E/C industry, climatology, building design, mobility, natural resources, climate change, renewable energy, land-use planning, and economic and environmental modeling.


Since the employee buyout in 1996 from the French conglomerate Bouygues, HDR has acquired over 60 firms around the world. In February 2011, HDR acquired Cooper Medical, an Oklahoma City, Oklahoma, based firm providing integrated design and construction services for healthcare facilities throughout the U.S.[9] The new alliance, HDR Cooper Medical, will provide a service design and construction delivery model to healthcare clients. In February 2011, HDR acquired Schiff Associates, a recognized leader in corrosion engineering headquartered in Claremont, California, with offices in Houston, Las Vegas, and San Diego. Schiff is now conducting business as HDR|Schiff.[10]

In January 2011, HDR acquired HydroQual, Inc., which specializes in water resource management. Based in Mahwah, N.J., HydroQual has nine offices in New Jersey, New York, Massachusetts, Florida, Utah and Dubai. HydroQual is now conducting business as HDR|HydroQual.[11] Also in January 2011, HDR acquired Amnis Engineering Ltd., based in Vancouver, British Columbia.[12] The firm provides engineering and consulting services in British Columbia and a number of international locations for hydropower and water resources infrastructure.

In March 2013, HDR acquired TMK Architekten • Ingenieure, a German healthcare architecture firm.[13] The merged company is the hub for HDR's healthcare and science design programs in Europe. HDR has offices in Berlin, Duesseldorf, Munich, and Leipzig, Germany.

In April 2013, HDR acquired Salva Resources, a global provider of technical and commercial services for mining exploration and investment in Brisbane, Australia.[14]

In July 2013, HDR acquired the business and assets of Sharon Greene + Associates, a firm specializing in transportation economics and financial analysis.[15]

In November 2013, HDR acquired Rice Daubney Architects, a firm in Sydney, Australia.[16] The merged company conducts business as HDR Rice Daubney and is the hub for HDR's healthcare, defence, retail, and commercial work in Australia and HDR's retail and commercial work throughout the globe.[17]

In January 2015, HDR acquired the assets of MEI, LLC, a liquid natural gas engineering and consulting firm based in Pooler, Georgia.[18]

In July, 2015, HDR acquired CEI Architecture of Vancouver, British Columbia, an architectural, planning and interior design consultant.[19]

In September, 2017, HDR acquired long-time partner, Maintenance Design Group, a firm specializing in the planning and design of vehicle and fleet operations and maintenance facilities. HDR sought to add MDG's strengths in facility planning and design to complement its asset life-cycle approach to infrastructure development.[20]

In 2018, HDR expanded its water resources services by acquiring the assets of David Ford Consulting Engineers, a firm based in Sacramento, California. The firm specializes in water hydraulics, flood risk analysis, reservoir systems and operations, water resource planning and hydro-economics.[21]

In May 2019, HDR acquired Calthorpe Associates, an internationally recognized firm in regional planning, urban design and transit-oriented development.[22]

In July 2019, HDR expanded its footprint in Europe and Asia by acquiring the British firm Hurley Palmer Flatt, as well as its subsidiaries.[23]

Hurley Palmer FlattEdit

Hurley Palmer Flatt
TypePrivate company
Industryengineering consulting
HeadquartersLondon, UK
Number of employees

Hurley Palmer Flatt is a multi-disciplinary engineering consultancy based in London. It provides mechanical and electrical engineering consultancy and associated services. It was established in 1968 in the UK by John Hurley as a building services consultancy. It has expanded into a global company operating in Dubai, India, Australia, Singapore and the US. It engages in both public and private sector development across a variety of fields.


In 2009 Hurley Palmer Flatt acquired ATCO Consulting, expanding their reach in Scotland.[24] In 2014 they acquired mechanical and engineering firm Andrew Reid and Partners (AR&P) and have a majority controlling share of the business.[25]

Recently, the company acquired a majority share in the Civil and Structural Engineering business, Bradbrook Consulting. Bradbrook have UK based offices in London, Kingston, Watford, and Manchester and also in Dubai.[26]

In 2016, the company moved its central London office to 240 Blackfriars at the South Bank Tower on a 10-year lease as part of its expansion plan.[27]

In 2019 the company was acquired by HDR Inc.[28]


In 2015 the company completed the refurbishment of the award-winning 195-197 King’s Road in Chelsea for Martins Properties.[citation needed] The company was appointed by Henry Boot Developments to work on the Aberdeen Exhibition And Conference Centre Energy Centre.[29][30]

Hurley Palmer Flatt were appointed to work on the renovation of the Weston Library at Oxford University, which was shortlisted for the 2016 Stirling Prize.[31] They previously were the mechanical & electrical consultant for the renovated Archive & Book Storage Facility at the Bodleian Library, Oxford.[32][33]

Notable projectsEdit

Awards and recognitionEdit

  • Number 34 out of the Top 150 Consultants 2016 by Building.co.uk.[34]
  • View58 (58 Victoria Embankment) was Highly Commended the 2016 Property Awards in the Sustainability category.[35]
  • Nominated for the Training Initiative of the Year at the Consultancy and Engineering Awards 2016.[36]
  • Weston Library won AJ100 Building of the Year.[37]
  • Weston Library also won the RIBA National Award 2016, RIBA South Award 2016 and the RIBA South Building of the Year 2016.[38]
  • Winner in the Affordable Housing category at the Scottish Design Awards 2008 for Fyne Homes & CP Architects Gigha project in West Scotland.[39]
  • Nominated for the CIBSE Employer of the Year 2017 Award [40]
  • Number 24 out of the Top 150 Consultants 2019 by Building.co.uk [41]

Andrew Reid and PartnersEdit

Andrew Reid and Partners
TypePrivate company
Industryengineering consulting
HeadquartersLondon, UK

Andrew Reid and Partners (AR&P) is a multi disciplinary engineering consultancy based in London. It provides mechanical and electrical engineering consultancy and associated services. It was established in 1970 in the UK by Andrew Reid as a building services consultancy.[42] Its core services include diagnostic assessments of under performing buildings and the management or independent validation of building engineering services commissioning.


Andrew Reid specialise in critical engineering services design and commissioning and have worked on a variety of buildings in many sectors. Their work in commissioning began at the Barbican Arts Centre, through all fourteen phases of London's Broadgate development to the present day including the 750,000ft2 headquarters for UBS at 5 Broadgate in London.

Since the late 1990s, when internet services began to take hold in global communications Andrew Reid has been responsible for the successful commissioning of data centres for several of the world most successful brands, many of whom demand strict confidentiality.[43]

Design engineers have been involved in work at The National Gallery since the mid 1980s when the company designed the building services for the new Sainsbury Wing.[44] The company's designers have since been involved in many museums and galleries including Dulwich Picture Gallery, the National Maritime Museum and the Imperial War Museum.


In 2014, building services consultancy Hurley Palmer Flatt acquired a majority controlling share in the business.[45][46][47] In 2016, to accommodate the growth of the business in moved into 240 Blackfriars.[48]

Notable projectsEdit


In 2018, the American Council of Engineers awarded the Grand Conceptor Award to HDR and joint venture partner WSP USA for the design and construction of a new roadway within the steel-arch Bayonne Bridge—64 feet above an existing highway it was to replace. The Grand Conceptor Award signifies the year's most outstanding engineering achievement.[60] The recognition marked HDR's fourth Grand Conceptor in the company's 100-year history, and the second time that HDR received the award two years in a row. In 2017, the State Route 520 floating bridge earned the American Council of Engineering Companies' Grand Conceptor Award.[61]

HDR also won back-to-back Grand Conceptor Awards in 2010 and 2011. The 2011 award winner was the Hoover Dam Bypass. HDR was the project manager for this project.[62][63] The Hoover Dam Bypass won several other industry awards. The 2010 winner was the Gills Onions Advanced Energy Recovery System in Oxnard, California, which uses onion waste to produce renewable energy.[64]

Select designsEdit


  1. ^ https://www.hdrinc.com/locations
  2. ^ "The Employee Ownership 100: America's Largest Majority Employee-Owned Companies". Retrieved 2020-11-11.
  3. ^ writer, Steve Jordon World-Herald staff. "HDR's new CEO is focused on a smooth transition and building on company's progress". Omaha.com. Retrieved 2019-02-09.
  4. ^ "ENR 2019 Top 500 Design Firms". Retrieved 2020-11-11.
  5. ^ http://www.fundinguniverse.com/company-histories/hdr-inc-history/
  6. ^ Williams, John; Larocque, Stephane (2009-10-05). "Engineering HDR & SROI: How to Measure "Green"". Center for a Better Life. Archived from the original on 2012-07-29. Retrieved 2011-11-06.CS1 maint: bot: original URL status unknown (link)
  7. ^ Potomac Digitek. "Institute For Sustainable Infrastructure (ISI): Welcome". Sustainableinfrastructure.org. Retrieved 2014-04-22.
  8. ^ Potomac Digitek. "Institute For Sustainable Infrastructure (ISI): News". Sustainableinfrastructure.org. Retrieved 2014-04-22.
  9. ^ "HDR acquires healthcare design-build firm Cooper Medical | Building Design + Construction". Bdcnetwork.com. Retrieved 2011-11-06.
  10. ^ [1][dead link]
  11. ^ "CE News". CE News. 2011-01-13. Retrieved 2011-11-06.
  12. ^ "Amnis Engineering Joins HDR, Strengthens Hydropower Presence". Hdrinc.com. 2011-01-07. Archived from the original on 2011-10-01. Retrieved 2011-11-06.
  13. ^ Hill, Cate St (2013-03-05). "TMK Architekten merges with HDR | News | Building Design". Bdonline.co.uk. Retrieved 2014-04-22.
  14. ^ "HDR Acquires Salva Resources". Hdrinc.com. 2013-04-02. Archived from the original on 2014-04-19. Retrieved 2014-04-22.
  15. ^ "HDR Acquires Sharon Greene + Associates". Hdrinc.com. 2013-07-23. Archived from the original on 2013-10-12. Retrieved 2014-04-22.
  16. ^ Chua, Geraldine (2013-10-24). "Rice Daubney merges operations with global firm HDR Architecture". Architecture And Design. Retrieved 2015-03-01.
  17. ^ "Going for a premium? Some Australian architects are". BRW. 2013-10-25. Retrieved 2014-04-22.
  18. ^ Gonzalez, Cindy (2015-01-07). "Acquisitions will boost HDR's global workforce to about 9,200". Omaha World-Herald.
  19. ^ "Merger & Acquisition Activity - Q3 & Q4 2015" (PDF). Chartwell. 2015.
  20. ^ "HDR Acquires Maintenance Design Group". ENR. 2017-10-03.
  21. ^ "HDR Acquires David Ford Consulting Engineers". The Bakersfield Californian. Retrieved 2018-08-06.
  22. ^ "HDR Acquires Calthorpe Associates". HDR. Retrieved 2019-10-18.
  23. ^ https://www.hdrinc.com/news-and-events/news/2019/hdr-acquires-hurley-palmer-flatt-group
  24. ^ "Hurleypalmerflatt acquires Glasgow consultancy". Modern Building Services. Portico Publishing Ltd. 3 February 2009.
  25. ^ "Hurley Palmer Flatt acquires M&E firm". Building.co.uk. UBM. 19 September 2014. Retrieved 19 September 2016.
  26. ^ "HPF acquire majority share in Bradbrook Consulting". Hurleypalmerflatt.com. HurleyPalmerFlatt. 23 November 2016. Retrieved 23 November 2016.
  27. ^ Services, Modern Building. "Hurley Palmer Flatt finds new home in London". www.modbs.co.uk.
  28. ^ "Hurley Palmer Flatt Group Joins HDR". Retrieved 5 July 2019.
  29. ^ Morby, Aaron. "Boot gets go-ahead for £333m exhibition centre". Construction Enquirer.
  30. ^ "Hurleypalmerflatt to develop energy centre for Aberdeen project". Modern Building Services. Portico Publishing Ltd. 6 May 2015.
  31. ^ "RIBA Awards Weston Library". Architecture.com. 2 April 2015. Retrieved 19 September 2016.
  32. ^ Waite, Richard (7 October 2010). "Bodleian Libraries opens £26 million book depository". The Architects Journal. Retrieved 19 September 2016.
  33. ^ Ljeh, Ike. "Bodleian library: The new edition". bdonline.co.uk.
  34. ^ "Top 150 Consultants". Building.co.uk. UBM. Retrieved 19 September 2016.
  35. ^ "Property Awards 2016". www.hurleypalmerflatt.com.
  36. ^ "Consultancy and Engineering Awards Winners for 2016". Consultancy and Engineering Awards.
  37. ^ "Weston Library named AJ100 Building of the Year". www.wilkinsoneyre.com. Retrieved 19 September 2016.
  38. ^ "RIBA Awards Weston Library". www.architecture.com. Retrieved 19 September 2016.
  39. ^ "Affordable homes win for hurleypalmerflatt". Urban Realm. 26 August 2008.
  40. ^ 2017, CIBSE. "Employer of the Year 2017 Finalists". www.cibse.org.CS1 maint: numeric names: authors list (link)
  41. ^ 2019-09-27T05:00:00. "Top 150 Consultants 2019: The table". Building. Retrieved 2019-10-29.
  42. ^ Aubyn Hubbard, Hugh St (27 May 2009). "Andrew Reid". The Guardian. Guardian News and Media Ltd.
  43. ^ Profile, Company. "Andrew Reid & Partners". infrastructure-intelligence.com.
  44. ^ University Engineers, Society of Oxford. "Andrew Reid". soue.org.uk.
  45. ^ Flatt, Hurley Palmer. "Hurley Palmer Flatt acquire majority share in Andrew Reid". andrewreid.co.uk.
  46. ^ Stothart, Chloe (16 September 2014). "M&E firm Hurleypalmerflatt buys consultancy". Construction News.
  47. ^ World, FM. "HURLEY PALMER FLATT SNAPS UP ANDREW REID". fm-world.co.uk.
  48. ^ Services, Modern Building (4 February 2016). "Hurley Palmer Flatt finds new home in London". modbs.co.uk. Portico Publishing Ltd.
  49. ^ Gallery, The National. "Improving our Environment". nationalgallery.org.
  50. ^ Braidwood, Ella. "Purcell wins approval for major National Gallery extension". architectsjournal.co.uk.
  51. ^ Controls, Trend. "Case Study: CASTING FRESH LIGHT ON OLD MASTERS" (PDF). trendcontrols.com.
  52. ^ Ltd Design, Neville Bruton. "SCHEDULE OF WORKS – IMPERIAL WAR MUSEUMS" (PDF). museuminsider.co.uk.
  53. ^ Reid, Andrew. "New Children's Gallery at the National Maritime Museum". andrewreid.co.uk.
  54. ^ Limited, 8 Build. "BRITISH LAND 155 BISHOPSGATE". 8build.co.uk.
  55. ^ Reid, Andrew. "Deutsche Bank Achieve LEED Gold. Again". andrewreid.co.uk.
  56. ^ Trust, Mary Rose. "Annual Review 2013" (PDF). maryrose.org. Archived from the original (PDF) on 14 May 2016. Retrieved 6 December 2017.
  57. ^ Services, Estate. "Ashmolean Museum". University of Oxford.
  58. ^ Dixon, Willmott. "Dreadnought Building, University of Greenwich". willmottdixon.co.uk.
  59. ^ Aubyn Hubbard, Hugh St (27 May 2009). "Andrew Reid". The Guardian. Guardian News and Media Ltd.
  60. ^ "ACEC - Engineering Excellence Awards". www.acec.org. Retrieved 2018-08-03.
  61. ^ "HDR Wins ACEC Grand Conceptor for SR 520". 2017-04-16. Retrieved 2017-12-29.
  62. ^ "Home" (PDF). ACEC. Retrieved 2015-03-01.
  63. ^ "Hoover Dam Bypass Becomes 2nd HDR Project to Win American Council of Engineering Companies' Highest Honor". Hdrinc.com. 2011-04-01. Archived from the original on 2014-04-19. Retrieved 2014-04-22.
  64. ^ Gills Onions (2009-07-17). "Gills Onions Advanced Energy Recovery System". Hdrinc.com. Retrieved 2014-04-22.