Susan Pratt
Start to finish excellent experience! Shannon was always available to answer our questions-the crew was great, did an awesome job! We are so happy with our new driveway!
Spec Group Concrete is an O'Fallon flatwork contractor serving St. Charles County. It began serving local clients in 2018 and offers decorative concrete alongside its flatwork services.
Last Updated October 3, 2026.
St. Charles County, Missouri.
Spec Group Concrete is one of 7 concrete & masonry contractors ProsGrade lists in O'Fallon, Missouri.
7 services listed, including Driveways, Stamped and colored concrete and Broom-finished patios. Open Monday to Saturday. Rated 4.9 from 77 reviews.
How Spec Group Concrete compares with the other 6 concrete & masonry contractors on ProsGrade in O'Fallon, using public Google ratings and review counts.
Customers praise the finished concrete work and communication, including answers to questions and timing updates. One customer noted that the company was booked a couple of months out.
Start to finish excellent experience! Shannon was always available to answer our questions-the crew was great, did an awesome job! We are so happy with our new driveway!
Spec concrete is the absolute best! Elliott and Shannon are a dynamic duo, from the bid all the way through the finished product, would absolutely recommend them for any concrete work you have.
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Quotes are prepared on Sundays, and a PDF quote is sent by email the following Wednesday.
Financing is available with weekly or monthly payments over 3, 6, 12 or 24 months.
Spec Group advises keeping foot traffic off the concrete for 24 hours and vehicle traffic off for 7 days after pouring.
Driveway replacements and additions are inspected by city officials before and after the pour, and permits are drawn to meet current city guidelines. When a permit is required, Spec Group handles it; accounting time and associated fees are applied to the project invoice.
It recommends sealing concrete at least every other year.