Specialties Concrete Driveways, Concrete Foundations, Concrete Patios, Concrete Sidewalks, Concrete Stairs, Decorative Concrete, Stamped Concrete, Trench Foundations Quality Work At Reasonable Prices. Welcome to Custom Concrete. We are concrete contractors serving DuPage County, Illinois and the surrounding areas. We pride ourselves on being able to serve commercial, residential and industrial clients. Our employees are skilled, courteous and professional.