The firm was established in 1925 by its founder, Charles Sells, a professional engineer and land surveyor.

From its beginning as a local engineering and surveying firm to its position now as one of the top design firms in the U.S., WSP SELLS has based its growth on in-depth experience, strategic office locations, and qualified staff. This combination permits WSP SELLS to complete projects of all sizes in both a timely and cost efficient manner, and to build relationships with clients that stand the test of time.