Since our start in 1986, we've been committed to providing the most attentive, complete, and knowledgeable personal service. We know that building your home may be one of the biggest and most important investments you'll ever make, and we want you to feel comfortable and confident that we're the builder for you. Build your patio home or business with Wilcon Construction. Wilcon Construction Services is an established construction company serving Southern Minnesota and Northern Iowa. Our line of construction services includes: General Construction Contracting, Real Estate Development, Masonry, Carpentry, and Concrete. We were established in 1986 by Bill and Kirsten Freitag in Saint James, Minnesota. We service many clients in the Industrial, commercial, and residential markets.