Since its inception in 1990, Ontario Concrete Finishing has served Durham region with a wide range of professional custom concrete services. Specializing in stamped pattern concrete, with decades of experience in the construction industry, OCF is the guaranteed choice for exceptional quality. Concrete Designs of Quality and originality you will be proud to have in your backyard, front landscaping or business's walkways / driveways. From Start to Finish. Ontario Concrete Finishing serves Oshawa, Whitby, Ajax Clarington and Pickering. Professional On-site consultation, all work is covered by a 2 year warranty. 30 designs to choose from, unlimited colors. We offer a wide range of landscape construction services to enhance your outdoor living space: Decorative Stamped Concrete-Steps, Patios and Porches-Driveways-Curbs and Sidewalks-Complete Landscape Design & Construction-Natural Stone Placement-Retaining walls-Custom Water Falls.