HDR Headquarters & Corporate Office

About HDR

HDR is a global architecture, engineering, environmental, and construction-services firm whose history dates to 1917. The company was founded in Omaha, Nebraska by H.H. Henningson as the Henningson Engineering Company. Its early work focused on helping small Midwestern communities obtain electricity, water systems, and other infrastructure needed for modernization. Engineers Willard Richardson and Charles Durham later joined the organization, and the company eventually became Henningson, Durham and Richardson, Inc., giving rise to the HDR name used today.

Today, HDR is a multidisciplinary professional-services organization serving transportation, water, power, healthcare, science, education, federal, defense, architecture, environmental, industrial, and other infrastructure markets. Its teams include architects, engineers, scientists, economists, planners, analysts, consultants, builders, designers, and technical specialists. Current 2026 company information reports more than 15,000 employees working from more than 200 offices around the world, with permanent operations in approximately 15 countries and services across 17 major markets.

HDR has a distinctive ownership structure. After spending part of its history under outside corporate ownership, a group of employees purchased the company in 1996 and reestablished broad employee ownership. In 2026, HDR celebrated 30 years as an employee-owned company. HDR is now 100 percent employee owned and identifies itself as the largest 100 percent employee-owned architecture and engineering firm in the United States. John W. Henderson currently serves as Chairman and Chief Executive Officer, while Neil Graff serves as President and Chief Operating Officer. The company remains headquartered at 1917 South 67th Street in Omaha.

HDR Headquarters & Corporate Office Address

Current Headquarters

HDR, Inc.
1917 South 67th Street
Omaha, NE 68106-2973
United States

HDR’s current official Contact Us page identifies this Omaha address as the company’s headquarters.

Corporate Office

1917 South 67th Street
Omaha, NE 68106-2973
United States

The Omaha headquarters supports executive leadership, architecture and engineering business groups, finance, legal functions, technology, human resources, communications, strategy, and global corporate administration.

Mailing Address

HDR, Inc.
1917 South 67th Street
Omaha, NE 68106-2973
United States

HDR uses the same location for principal corporate correspondence and general headquarters contact.

Other Important Address

HDR operates more than 200 offices around the world. Project-related matters should generally be directed to the HDR office, project manager, or business group responsible for the specific contract.

Quick Information

Corporate Phone Number

402-399-1000

HDR publishes this number directly with its Omaha headquarters address.

Customer Service Number

402-399-1000

HDR does not operate a retail-style Customer Service call center. General clients and members of the public can use the headquarters number or official Contact Us form.

Corporate Office Address

1917 South 67th Street, Omaha, NE 68106-2973, United States.

Headquarters Address

1917 South 67th Street, Omaha, NE 68106-2973, United States.

Email

privacy@hdrinc.com

This is a verified public HDR email for privacy-related correspondence. General business questions are directed through HDR’s official Contact Us form.

Industry

Architecture, engineering, environmental consulting, construction services, planning, infrastructure, and professional services.

Founded

1917 by H.H. Henningson in Omaha, Nebraska.

Number of Employees

More than 15,000 employees worldwide.

Number of Offices

More than 200 offices worldwide.

Ownership

100 percent employee owned.

Website

https://www.hdrinc.com/

Careers Page

https://www.hdrinc.com/careers

HDR is privately held and employee owned and therefore does not maintain a traditional public shareholder Investor Relations portal.

HDR Products & Services

Architecture

HDR provides architecture and design services for healthcare facilities, research buildings, education projects, civic facilities, transportation environments, workplaces, and other building types.

Engineering

The firm delivers civil, structural, electrical, mechanical, transportation, water, power, and other engineering services for complex infrastructure and building projects.

Transportation

HDR plans and designs highways, bridges, transit systems, rail projects, airports, ports, streets, and other transportation infrastructure.

Water Services

Water professionals work on drinking-water systems, wastewater treatment, water reuse, stormwater, dams, reservoirs, conveyance, and water-resource planning.

Power and Energy

HDR provides engineering, planning, consulting, transmission, distribution, generation, renewable-energy, and energy-infrastructure services.

Environmental Services

The company performs environmental assessments, permitting, compliance, ecological studies, remediation, sustainability analysis, and related environmental consulting.

Construction Services

HDR provides construction management, inspection, administration, program management, and technical support throughout project delivery.

Healthcare Design

HDR is a major designer of hospitals, medical centers, research institutions, clinics, and other healthcare facilities.

Federal Services

The firm provides architecture, engineering, planning, infrastructure, and technical services to U.S. federal agencies and other public-sector clients.

Program Management

HDR helps clients manage complex portfolios and large infrastructure programs involving multiple projects, contractors, schedules, stakeholders, and funding sources.

Planning and Consulting

The company provides planning, economic, strategic, technical, asset-management, and advisory services supporting infrastructure investment and public decision-making.

Digital and Data Solutions

HDR uses digital design, modeling, analytics, data, geospatial systems, visualization, and technology platforms to support project development and operations.

HDR Corporate Phone Numbers

Corporate Phone Number

402-399-1000

This is HDR’s verified main corporate telephone number at its Omaha headquarters.

Corporate Headquarters Number

402-399-1000

The same number is published directly on HDR’s current headquarters Contact Us page.

Headquarters Number

402-399-1000

Clients, vendors, members of the public, and corporate callers can use this number for general headquarters routing.

Corporate Office Number

402-399-1000

This number serves HDR’s principal Omaha corporate office.

Customer Service Number

402-399-1000

HDR does not maintain a retail consumer call center, so this is the appropriate public general-contact number when a project-specific contact is unavailable.

Customer Support Number

Varies by project or office.

Existing clients should normally contact the HDR project manager, contract representative, or regional office handling their work.

Reasonable Accommodation Number

800-366-2701

HDR publishes this number for applicants and employees who need reasonable accommodation or assistance because of disability or limited English proficiency.

Privacy Support Number

800-295-8912

HDR publishes this number for questions and requests involving its privacy practices and processing of personal information.

Local Office Number

Varies by office.

HDR maintains more than 200 offices worldwide, each with contact details appropriate to its local market.

Sales / Business Development Number

Public universal dedicated sales number not available.

Prospective clients should use HDR’s Contact Us form or contact the office serving the relevant market.

Investor Relations Number

Not applicable.

HDR is privately held and 100 percent employee owned.

Media / Press Number

Public verified universal media telephone number not prominently available.

Media and corporate communications inquiries should use HDR’s current corporate contact channels.

How to Reach a Real Person at HDR

For a general corporate or project-related inquiry, call HDR headquarters at 402-399-1000 or use the official Contact Us form. Existing clients will generally receive faster assistance by contacting the project manager, principal-in-charge, regional office, or business-group representative assigned to their work.

Before contacting HDR, have the project name, location, client organization, contract or proposal reference, HDR office involved, and name of any existing company contact available. This allows the headquarters team to route the inquiry to the appropriate architecture, engineering, environmental, construction, or consulting group.

Applicants requiring reasonable accommodations can call 800-366-2701 or use reasonableaccommodations@hdrinc.com. Privacy inquiries can use 800-295-8912 or privacy@hdrinc.com. Employment-application status questions should normally be handled through the HDR job-board account rather than the general headquarters line.

How to File a Complaint Against HDR

Complaints may involve professional services, project delivery, contracts, billing, employee conduct, design work, construction administration, privacy, employment, or other business matters. Before escalating, gather the project name, contract information, correspondence, invoices, drawings, reports, and previous communication with HDR personnel.

Step 1: Contact Customer Service

Begin with the HDR project manager, office principal, contract representative, or business-group contact responsible for the work. Explain the issue and the desired resolution.

Step 2: Contact the Relevant Department

Design concerns should go to project leadership, billing matters to the appropriate project or finance contact, employment issues to Human Resources, and privacy complaints to HDR’s privacy team.

Step 3: Request Supervisor or Management Review

If the project-level contact cannot resolve the matter, request review by the office principal, business-group leader, regional director, or appropriate senior manager.

Step 4: Use the Company’s Written Complaint Channel

Document the issue in writing through HDR’s official Contact Us process or the contractual notice mechanism established for the project. Include relevant supporting documentation.

Step 5: Contact Corporate Headquarters

Serious unresolved organizational matters can be directed to HDR, Inc., 1917 South 67th Street, Omaha, NE 68106-2973.

Step 6: Use the Specialized Complaint or Dispute Department

Privacy, employment, professional liability, contractual, ethics, procurement, and project disputes may require specialized legal, HR, compliance, insurance, or management review.

Step 7: File With the Appropriate Regulator

Professional engineering or architecture complaints can involve state licensing boards. Employment, environmental, public-contract, and construction concerns may involve different state or federal authorities depending on the issue.

Step 8: Use Consumer Protection or Commercial Dispute Options

HDR primarily serves government, institutional, and commercial clients, so many disagreements are governed by professional-services contracts rather than consumer law. Clients should review the project agreement and contractual dispute procedures.

Step 9: Consider Formal Legal or Arbitration Procedures

For substantial professional-services, design, construction, financial, or contractual disputes, review the governing agreement for notice, mediation, arbitration, insurance, liability, and jurisdiction requirements. Preserve project records and seek qualified construction or commercial legal advice when appropriate.