About Us


12220 113 Avenue NE, Suite 130

Kirkland, Washington 98034

Phone: (425) 821-7777

Fax: (425) 821-4334




Terra-Associates, Inc. conducts geotechnical engineering studies and environmental assessments through out the Pacific Northwest. Our principals and engineers are licensed and have participated in projects in Washington, Alaska, California, Idaho, Oregon, Pennsylvania, Montana, Nevada, North Dakota, South Dakota, and West Virgina.


Our project experience includes educational, recreational and public work facilities, roadways, bridges, airports, large residential developments, and commercial/ industrial complexes for both the public and private sectors. Terra - Associates believes in a partnership between development and the environment. As such, we are skill in understanding and analyzing the ability the physical and natural environment to support development, as well as development's impact on the environment.