:: HDJ Design Group :: engineers | landscape architecture | planners

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Focus and commitment.

From Hopper & Dennis to Hopper Dennis Jellison, and now HDJ Design Group, we continue to build and enhance relationships with our customers.

For over 33 years, our focus on quality, service, and commitment to our customers has remained constant.

Clover Island Lighthouse & Gateway!

About HDJ Design Group

HDJ Design Group is a full service civil engineering firm situated in the Pacific Northwest. Our corporate headquarters is located in Vancouver, WA, with our Tri Cities operations serving Eastern, WA.

Established in 1980, HDJ Design Group has provided customers with a wide array of services across major markets. more>

HDJ Announces New Associate Principal