Built on integrity and reliability, serving Jackson County and Williamson County with pride for over 15 years
About Olandezco Construction
Our Story: Built on Family Values
Olandezco began over 20 years ago, founded on principles of integrity and reliability. We have grown from a small family operation into one of the most trusted construction 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.
Years of Family Excellence
20+
Why Choose Olandezco Construction?
When you choose us, you're choosing a family business that treats your project with the same care we'd give our own home
Licensed & Insured
Fully licensed and insured for your peace of mind. We meet all state and local requirements for construction work in Illinois.
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Local Expertise
Deep knowledge of Jackson County and Williamson County building codes, permits, and local requirements.
Transparent Pricing
No hidden fees or surprise costs. We provide detailed actual estimates and stick to our quoted prices.
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Quality Materials
We use only premium materials from trusted suppliers to ensure your project stands the test of time.
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Timely Completion
We respect your time and schedule. Projects are completed on time and within budget, every time.
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Warranty Protection
All our work comes with comprehensive warranties. We stand behind our craftsmanship long after completion.
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Ready to Start Your Project?
Let's discuss your construction needs and provide you with a free, detailed estimate.
Request Your Free Quote
Ready to start your construction project? Get a detailed quote tailored to your needs.