Our Beginnings

Chairman and founder, Al Jansen, started Jansen Inc. in 1951 shortly after his honorable discharge from the United States Air Force for his service in the Pacific during World War II.


Jansen Inc. began as a landscape contractor completing projects at Little Rock Air Force Base landscaping 2000 homes, Construction of Elmendorf Air Force Base Golf Course in Alaska, landscaping Interstate – 5 through Seattle, Washington as it was first built and the landscaping for SeaTac International Airport during its first large expansion.

Continued Growth

Jansen continued to land large scale projects including the landscaping at the Seattle Center for the Seattle’s World’s Fair.


The company soon evolved into completing larger heavy civil construction projects such as highways, bridges and harbors across the United States from Alaska to Hawaii to Colorado. This included a small boat harbor and breakwater in Laupahoehoe, Hawaii and a large scale bridge over the Cheney River in Fairbanks Alaska.


The geographic location of Jansen’s projects was never a liability but rather an opportunity. Al Jansen continued to pick out projects that were unique or unusual in some nature that had less competition which sometimes required traveling large distances across the United States when travel was slow and the modern airline jet was not in service yet.

The Present

Currently, Jansen Inc. strives to achieve quality, efficiency, and safety, and in doing so attains a standard that is above that of our competition.


Jansen Inc.’s accomplishments include being awarded the “Administrators Award of Excellence” by the US Small Business Administration and the “Environmental Improvement Award of Distinction”.


Our success has been based on surrounding ourselves with excellent people who enjoy the challenge and opportunity offered in the construction business.