Welcome...

For over 23 years, Custom Design Construction Co. has served the O Fallon, MO, area with a commitment to service and value. We appreciate your interest and look forward to earning your business.

Established in 1983, Custom Design Construction Co. has the experience and expertise to get the job done right the first time. Our skilled professionals use only the finest tools and materials to build quality custom decks, gazebos and 3 season rooms. We guarantee our work and your satisfaction.

Please take a few minutes to browse our site. If you have any questions or comments, please contact us. We're glad you're here and hope to hear from you soon. Call today for a free design or estimate.

In addition, we can customize any project to meet your specifications. We guarantee to get the job done right the first time and will work hard to make sure you are completely satisfied. Call us today and let us show you the Custom Design Construction Co. difference.

 Custom Built Decks, Vinyl Siding, Patio Covers, and much more !