Call Today for Free Estimate - Experience the ProMax Difference!
Promax Construction is an independent and family-owned company founded in 2000 by John Schilawski. While the company has evolved over the years, John Schilawski continues to run the company with his wife Sharon. Our home base is in Decatur, IL, but we provide services to the greater central Illinois community, including Springfield, Champaign, Bloomington, IL, and any location within a 65-mile radius of Decatur, IL. We have been the Herald and Review readers' choice for several services over the years and hold an A+ BBB Rating, accreditation since April, 2000. Our commitment to quality and customer satisfaction has earned us a reputation as a trusted construction company in central Illinois.
Our Services
At Promax Construction, we offer a wide range of services to meet the needs of both residential and commercial clients. Our services include custom window installation, exterior remodeling, roofing, siding, door installation, kitchen and bathroom remodels, deck and porch construction, and more. We pride ourselves on providing top-notch services, backed by manufacturer warranties and our own 5-year workmanship warranty. Our team of experienced professionals ensures that every project is completed efficiently and to the highest standards.
Why Choose Promax
When you choose Promax Construction, you can expect personalized service from our experienced sales staff and a commitment to up-front pricing. We offer free estimates on all services, ensuring you have all the information you need to make an informed decision. Our team is fully insured, and we maintain a responsive office staff to address any questions or concerns you may have. With over 22 years in business, we have built a reputation for reliability and quality that we strive to maintain with every project.

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