
Harper Houf Peterson Righellis Inc
An integrated multi-disciplinary engineering, planning, and surveying practice.
Portland, OR+4
Explore capabilities, project experience, and office locations to build your shortlist.

An integrated multi-disciplinary engineering, planning, and surveying practice.
Portland, OR+4

Civil Engineering and Water / Wastewater.
Eureka, CA+6

Project Management and Architecture.
Guaynabo, PR
Success by Design
Greenville, MS+4

Diligent planning and civil engineering services in Florida
Lutz, FL
Integrated Expertise. Mission-Ready Solutions.
Oak Ridge, TN+7

Proudly serving the Southern California community since 1993
Temecula, CA

Professional Insight... Practical Solutions
Dayton, OH

Versatile Civil Engineering and Surveying Services
Lafayette, LA

Northern California Water Solutions
Morgan Hill, CA

Architecture Engineering Environment
San Antonio, TX

Earth. Science. Solutions.
St. Louis, MO

Providing Environmental, Surveying, Engineering, and Geoscience Solutions to the Great Lakes Region
Muskegon, MI

North Florida's Premier Engineering, Testing, and Inspection Firm
Jacksonville, FL

Guidance. Expertise. Partnership.
Andalusia, AL

Over 50 years of engineering excellence
Mt. Holly, NJ+1
Independent Engineering for Tomorrow's Energy Projects

Engineers - Planners - Scientists - Surveyors
North Canton, OH+2

Elevating Geotech Excellence!
Oxford, CT

The Core Foundation of Your Solutions
South Williamsport, PA+1

Professional engineering, environmental assessment, and industrial hygiene services
Scotts Valley, CA
Bright ideas. Sustainable change.

We'll Take Care of It.
Honolulu, HI
The Consultant of Choice for Aviation and Surface Transportation Projects Across the Southeast
Columbia, SC+6