Our Story: Built on Family Values

Olandezco began over 20 years ago, founded on principles of integrity, reliability and quality. We have maintained such work ethic in every build. We are a small family owned and operated construction company . We are one of the most trusted companies within Jackson County and Williamson County.

As a family-owned business, we understand that your home and business projects are more than construction, they are investments in your future. That’s why we treat every project with the same care and attention we would give our own.

Our commitment to excellence has earned us the trust of satisfied clients throughout Southern Illinois. We don’t just build structures; we build lasting relationships grounded in honesty, quality craftsmanship, and dependable service.