Company Overview
Company Name
HDR
Address
3945 Freedom Cir #280, Santa Clara, CA, 95054, United States
Website
hdrinc.comPhone
(669) 204-7960Approx. Annual Revenue
$1100.0M
Employees
15,000
Established
1994
Locations
134
About HDR
HDR is a 100% employee-owned, global professional services firm specializing in architecture, engineering, environmental, and construction services. Headquartered in Los Angeles, CA, the company employs approximately 15,002 individuals and provides a wide range of services across various industries, including aerospace, government, healthcare, and transportation.
Business Profile
Read from the HDR website on Oct 12, 2026. Hover an item to see the exact wording it came from.
Ownership (as declared by the business)
About the website
- Website quality (AI-assessed)
- 9/10 · Current copyright 2026; Complete navigation and content
- Footer copyright year
- 2026
Recent changes
What changed on the HDR website and Google listing, as detected by Coldlytics on each visit.
Google Business category is now Architecture firm
Coldlytics tracks changes like these across millions of businesses, so you can reach companies the moment they add a pixel, start hiring, or switch software.
Find companies by what just changed →HDR locations
134 Google Business Profile listings, showing 30.
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Frequently Asked Questions about HDR
Categories
Technologies Used
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Social Profiles
Key Decision Makers
Duane Hippe Owner
Lauren Helgerson Accounting Manager
Chris Bartram Director of Contracts and Procurement
Christopher McDonnell Principal
Neil Graff Owner/President
William Wehner Water/Wastewater Engineer
Marcus Bush Utility Management Consultant
Yonas Hagos Project Manager
Troy Ching Hawaii-Pacific Water Business Manager
Adam Parmenter Senior Professional Associate